SCOPE OF ACCREDITATION TO ISO/IEC & KS Q ISO/IEC

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1 SCOPE OF ACCREDITATION TO ISO/IEC & KS Q ISO/IEC HCT Co., Ltd. 74, 578-gil, Seoicheon-ro, Majang-myeon, Icheon-si, Gyungki-do, Republic of Korea Phone No : , Fax : , cal@hct.co.kr Valid To : Jan CALIBRATION Accreditation No. : KC00-011(1/99) Code In recognition of the successful completion of the KOLAS evaluation process, accreditation is granted to this laboratory to perform the following calibrations onsite onsite on- Code Code site Inside/Outside/Gear tooth Y General frequency sources Y 102. Linear dimension calipers, Caliper gauges Frequency meters/counters Y Balls N Cylinder/Bore gauges Y Time interval sources Y Dial/cylinder gauge testers N Depth gauges, Y Time interval meters/ Y End bars N Depth micrometers Stop watches/timers Extensometers, linear Y Dial/Digital gauges Y displacement transducers Micro indicators, Y 302. Velocity & revolution Filler gauges Y Test indicators Standard RPM generators Y Gap gauges N Micrometer heads N Contact type tachometers Y Gauge blocks, by comparison N point micrometers Y Photo tachometers/ Y Height gauges/measuring Y Inside micrometers Y machines Outside micrometers Y stroboscopes Standard measuring machines Y Standard sieves N Wow-flutter generators Y Electronic Micrometers N Welding gauges N Wow-flutter meters Y Height Micrometers, N Riser blocks 201. Mass 401. DC volatage & current Standard tape rules, N Counter beam balances Y DC ammeters Y peripheral gauges Direct reading balances Y Transconductance amplifiers Y Cylindrical plug/pin gauges, Y Electric balances Y DC voltage/current Y Thread measuring wire gauges Platform scale balances Y calibrators Radius gauges N Spring scale balances Y Electrical temperature Y Cylindrical ring gauges N Weights N calibrators Step gauges N DC current shunts Y Taper thickness gauges N 202. Force Galvanometers/null detectors Y Ultrasonic thickness gauges Y Force measuring devices N DC power supplies Y Ultrasonic/coating thickness N Tension/compression testing Y DC voltage standards Y specimens machines DC voltmeters Y Coating thickness testers Y Push-pull gauges N Static/Ionic voltmeters Y 103. Angle 203. Torque 402. Resistance, Capacitance and Bevel protractors N Torque measuring devices N Inductance Plate/square/electric levels N Torque wrenches/drivers Y Capacitance bridges Y /indicators 104. Form 204. Pressure Decade capacitors Y Optical flats N Absolute pressure gauges N Standard capacitors Y Optical parallels N Compound pressure gauges Y Earth testers Y Precision surface plates Y Differential pressure gauges Y Inductors Y Straight rules N Gauge pressure gauges Y Insulation testers Y Pressure transducers/ Y Q-meters Y 105. Complex geometry transmitters Resistance bridges & Similar Y Contact coordinate Y Dial type vacuum gauges Y instruments measuring machines Water Depth meters Y Resistance meters Y Non-contact coordinate Y Resistors Y measuring machines 209. Fluid flow Electrical conductivity meters Y Measuring microscopes, Y Anemometers; hot-wire N Impedance bridges/lcr meters Y Profile projectors Anemometers; pitot tube, etc. N Micro measuring microscopes Y Anemometers; vane, etc. N 403. AC voltage, current & power Thread plug gauges N AC ammeters Y 301. Time/frequency Clamp ammeters/voltmeters Y 106. Various dimensional Frequency standards N AC voltage/current calibrators Y

2 Accreditation No. : KC00-011(2/99) onsite Code site Code site on- on- Item of calibration Item of calibration Item of calibration Code AC current shunts Y Attenuator calibrators Y Glass thermometers; N Power factor meters Y RF power meter calibrators Y liquid-in-glass, Beckmann AC power meters Y EMC transducers ; current Y Resistance thermometers; Y AC power supplies Y probes, absorbing clamps,etc. SPRT, IPRT, thermistors,etc Puncture/safety testers Y Coaxial directional Y Thermal expansion Y Power recorders Y couplers/splitters thermometers ; bimetal, gas AC voltmeters Y Electrostatic Discharge Y or liquid type Generators Thermomecoules: noble metal, Y 404. Other DC & LF Measurements EMC receivers Y base metal, pure metal, LF amplifiers Y RF filters Y special type, etc DC/LF attenuators Y RF impedance meters Y Temperature transducers Y Multimeter calibrators Y RF impulse generators Y Oscilloscope calibrators Y Line impedance stabilization Y 502. Non contact thermometry Video signal generators Y networks; LISN, CDN, ISN,etc Standard radiation N Audio distortion analyzers/ Y Coaxial standard mismatches Y thermometers meters Mobile communication test Y LF filters Y sets 503. Humidity LF/Audio signal analyzers Y Modulation meters Y Dew-point hygrometers; N Line Frequency meters Y Network analyzers Y chilled mirror, alumina Function generators Y Noise figure meters Y thinfilm, etc Genescopes Y Noise generators Y Relative humidity Y AC/DC high voltages volt Y Noise impulse simulators Y hygrometers; polimer meters RF power meters Y thinfilm, hair, etc Leakage current testers Y Diode power sensors Y Temperature humidity N Electronic AC/DC loads Y Thermocouple Power sensors Y recorders ; Hygrothermograph Analogue/Digital multimeters Y Pulse generators Y, etc Noise meters Y Radar test sets Y Transducers; dew-point/ Y Oscilloscopes Y RF signal generators Y relative humidity LF phase meters Y RF spectrum analyzers Y Humidity generators; Y Random wave generators Y RF speed guns Y two-pressure,two-temperature Volt/Current recorders Y Surge generators Y, flow mixing humidity Relay test sets Y RF terminations Y gererator, constant LF signal generators Y Coaxial thermistor mounts Y temperature and humidity LF spectrum analyzers Y Transmission trouble testers Y chamber, etc Sweep generators Y RF voltmeters Y Transistor curve tracers Y Vector voltmeters Y 601. Sound in air Waveform analyzers Y strength meters Y Sound Calibrators Y AC/DC high voltage Y AM/FM test sources Y Microphones Y genarators Dip simulators Y Sound level meters Y AC/DC high voltage probes Y Logic analyzers Y 407. strength & antennas 603. Sound in air Telephone testers Y Dipole antennas N Vibration calibrators Y Video signal analyzers Y Loop antennas N Vibration transducers Y Monopole antennas N Vibration measuring Y 405. Low frequency electric & magnetic field instruments Flux meters N 501. Contact thermometry Flux sources N Temperature generators: Y 701. Photometry Magnetometers N ovens, furnaces, isothermal Iluminance meters Y Reference/standard magnets N liquid baths, ice-point baths, dry-block calibrators 901. Chemical analysis 406. Radio frequency measurements Temperature indicators/ Y Gas analyzers Y Note RF amplifiers Y Coaxial attenuators Y recorders/controllers, Burst pulse generators Y temperature calibrators 1. This laboratory provides calibration services in permanent standard laboratory and at on-site. 2. Laboratory conducts on-site calibration should meet requirements of KOLAS-SR On-site calibration is allowed to items with marking 'Y', not allowed to items with marking 'N'. 4. Calibration and Measurement Capability () means capabilities provided by accredited calibration laboratories. It expresses the lowest uncertainty of measurement that can be achieved during a calibration. normally is quoted as an expanded uncertainty at a coverage probability of 95 %, which usually requires the use of a coverage factor of k=2. 5.Due to the calibration environment such as reference standards or customers facilities, it is note that uncertainty of measurement on a calibration certificate may be expressed larger than on scope of accreditation in general.

3 Accreditation No. : KC00-011(5/106) 102. Linear dimension Balls (0 ~ 100) mm (0.015 l 0 ) 2 μm Gauge blocks, (unit of l 0 : mm) Standard measuring machines /HCT-CS Dial/cylinder gauge testers (0 ~ 25) mm 0.21 μm Gauge blocks, (25 ~ 100) mm 0.25 μm Electrical micrometer /HCT-CS End bars (0 ~ 500) mm (0.003 l 0 ) 2 μm Gauge blocks, (500 ~ 1 000) mm (0.003 l 0 ) 2 μm Electrical micrometer (unit of l 0 : mm) /HCT-CS Extensometers, linear displacement Gauge blocks transducers (0 ~ 50) mm (0.002 l 0 ) 2 μm (50 ~ 100) mm (0.002 l 0 ) 2 μm (100 ~ 1 000) mm (0.002 l 0 ) 2 μm (unit of l 0 : mm) /HCT-CS Filler gauges (0.01 ~ 5) mm 0.37 μm Bench Comparator /HCT-CS Gap gauges (1 ~ 300) mm (0.005 l 0 ) 2 μm Gauge blocks (unit of l 0 : mm) /HCT-CS Gauge blocks, by comparison (0.5 ~ 100) mm (1.3 l 0 ) 2 nm Gauge block comparators, (unit of l 0 : mm) Gauge blocks /HCT-CS Height gauges/measuring machines (0 ~ 1 000) mm (0.003 l 0 ) 2 μm Gauge blocks (unit of l 0 : mm) /HCT-CS Standard measuring machines (0 ~ 500) mm ( l 0 ) 2 μm Gauge blocks, (unit of l 0 : mm) Long gauge blocks /HCT-CS Air micrometers (0 ~ 0.02) mm 0.08 μm Gauge blocks (0.02 ~ 0.2) mm 0.16 μm /HCT-CS (0.2 ~ 2) mm 0.76 μm Height micrometers, Riser blocks Gauge blocks, Height micrometers Electrical micrometer Blocks (0 ~ 610) mm (0.003 l 0 ) 2 μm /HCT-CS (unit of l 0 : mm) Head (0 ~ 30) mm (0.003 l 0 ) 2 μm (unit of l 0 : mm) Riser blocks (0 ~ 600) mm (0.003 l 0 ) 2 μm (unit of l 0 : mm) Standard tape rules, peripheral (0 ~ 20) m (0.013 l 0 ) 2 mm Laser Meaturement Machine gauges (unit of l 0 : mm) /HCT-CS Cylindrical plug/pin gauges, thread Standard measuring machines measuring wire gauges Cylindrical plug/pin gauges (0 ~ 100) mm (0.003 l 0 ) 2 μm (unit of l 0 : mm) /HCT-CS Radius gauges (0 ~ 50) mm 2.9 μm Profile projectors /HCT-CS

4 Accreditation No. : KC00-011(6/106) 102. Linear dimension Cylindrical ring gauges (1 ~ 100) mm ( l 0 ) 2 μm Standard measuring machines (unit of l 0 : mm) Standard ring gauge /HCT-CS Step gauges (0 ~ 1 000) mm (0.003 l 0 ) 2 μm Gauge blocks, (unit of l 0 : mm) Electrical micrometer /HCT-CS Taper thickness gauges (0.1 ~ 60) mm 0.03 mm Profile projectors /HCT-CS Ultrasonic thickness gauges (0 ~ 100) mm 5.4 μm Ultrasonic Tester Blocks /HCT-CS Ultrasonic/coating thickness Gauge blocks, specimens Standard measuring machines Coating (0 ~ 8) mm 1.4 μm Electronic micrometers Ultrasonic (0 ~ 100) mm ( l 0 ) 2 μm (unit of l 0 : mm) /HCT-CS Coating thickness testers (0 ~ 0.25) mm 0.6 μm Ultrasonic thickness specimens (0.25 ~ 1.05) mm 1.6 μm /HCT-CS (1.05 ~ 3.7) mm 6.9 μm (3.7 ~ 7.9) mm 7.9 μm 103. Angle Bevel protractors Angle Gauge blocks, Angle accuracy 0 ~ Precision surface plates, 90 ~ Pofile projectors /HCT-CS Angle of accessories 0 ~ Plate/square/electric levels Fine angle generators, Angle ± Electronic micrometers ± Squareness testers, ± Precision surface plates Squareness (0 ~ 300) mm 2.2 μm /HCT-CS 평면도 300 mm 60 mm 0.71 μm 104. Form Optical flats Ø (10 ~ 130) mm 0.08 μm Optical Flat, /HCT-CS Optical parallels Optical flats, Flatness Ø (10 ~ 30) mm 0.08 μm Gauge block comparators Parallelism Ø (10 ~ 30) mm 0.06 μm /HCT-CS Precision surface plates Elecric levels Area (0 ~ 2 500) cm2 1.7 μm /HCT-CS (2 500 ~ 5 000) cm2 2.0 μm (5 000 ~ ) cm2 2.4 μm ( ~ ) cm2 2.7 μm ( ~ ) cm2 3.7 μm ( ~ ) cm2 4.9 μm

5 104. Form Accreditation No. : KC00-011(7/106) Straight rules (0 ~ 3 000) mm (0.015 l 0 ) 2 mm Laser Meaturement Machine, (unit of l 0 : m) Electronic micrometers, Squares, Filler gauges /HCT-CS Complex geometry Contact coordinate measuring Step gauges, machines Precision Square, Accuracy (0 ~ 600) mm (0.007 l 0 ) 2 μm Stragit rules (unit of l 0 : mm) /HCT-CS straightness (0 ~ 600) mm 2.1 μm squareness (0 ~ 600) mm 3.1 Non-contact coordinate measuring Standard scale, machines Precision Square, Accuracy (0 ~ 1 000) mm (0.006 l 0 ) 2 μm / HCT-CS (unit of l 0 : mm) Measuring microscopes, profile Standard scale, projectors Precision Square, Length accuracy (0 ~ 300) mm ( l 0 ) 2 μm /HCT-CS (unit of l 0 : mm) Right angle accuracy (0 ~ 360) 1.7 magnification accuracy 2 ~ Squareness accuracy (0 ~ 300) mm 2.8 μm Micro measuring microscopes (0 ~ 50) mm 2.6 μm Standard scale /HCT-CS Thread plug gauges Standard measuring machines External diameter (1 ~ 100) mm 0.51 μm Thread Measuring Wires Projectors Effective diameter (1 ~ 100) mm 1.6 μm /HCT-CS Pitch (0.2 ~ 6) mm 1.2 μm Half angle (0 ~ 45) Various dimensional Inside/outside/gear tooth calipers, Gauge blocks caliper gauges (0 ~ 150) mm (0.007 l 0 ) 2 μm (150 ~ 1 500) mm (0.007 l 0 ) 2 μm (unit of l 0 : mm) /HCT-CS Cylinder/bore gauges Dial gauges tester, Cylinder gauges (0 ~ 800) mm 0.96 μm Gauge blocks Bore gauges (0.5 ~ 18.5) mm 0.76 μm /HCT-CS

6 Accreditation No. : KC00-011(8/106) 106. Various dimensional Depth gauges, depth micrometers Gauge blocks (0 ~ 300) mm (0.005 l 0 ) 2 μm /HCT-CS (300 ~ 1 000) mm (0.005 l 0 ) 2 μm (unit of l 0 : mm) Dial/digital gauges (0 ~ 50) mm 0.15+(0.002 l 0 ) 2 μm Gauge blocks (50 ~ 150) mm 0.78+(0.002 l 0 ) 2 μm /HCT-CS (unit of l 0 : mm) Micro indicators, Test indicators Dial gauges tester (0 ~ 2) mm 0.63 μm / HCT-CS Micrometer heads (0 ~ 50) mm 0.63 μm Gauge blocks, Electrical micrometer / HCT-CS point micrometers (1 ~ 200) mm 3.4 μm Standard ring gauge Precision surface plates /HCT-CS Inside micrometers Gauge blocks (5 ~ 300) mm (0.005 l 0 ) 2 μm / HCT-CS (300 ~ 1 500) mm (0.005 l 0 ) 2 μm (unit of l 0 : mm) Outside micrometers (0 ~ 25) mm (0.005 l 0 ) 2 μm Gauge blocks (25 ~ 100) mm (0.005 l 0 ) 2 μm / HCT-CS (100 ~ 1 000) mm (0.005 l 0 ) 2 μm (1 000 ~ 1 500) mm (0.005 l 0 ) 2 μm (unit of l 0 : mm) Standard sieves Profile projectors Sieve opening (0.01 ~ 8) mm 1.6 μm /HCT-CS Wire rod diameter (0.01 ~ 125) mm 2.6 μm Welding gauges Profile projectors Height/dept hmeasuring scale (0 ~ 100) mm mm /HCT-CS Thick measuring scale (0 ~ 16) mm mm Rule measuring scale (0 ~ 50) mm mm Angle measuring scale (0 ~ 90) 0.13 Taper measuring scale (0 ~ 7) mm mm 201. Mass and related quantities Counter beam balances (0 ~ 311) g 9.6 mg Standard weights (311 ~ 2 610) g 82 mg /HCT-CS (2.61 ~ 20) kg 0.82 g Direct reading balances (0 g ~ 160) g 0.19 mg Weights/HCT-CS

7 Accreditation No. : KC00-011(9/106) 201. 질량 Electric balances (0 ~ 20) g mg Standard weights (20 ~ 200) g 0.19 mg /HCT-CS (200 ~ 2000) g 1.9 mg (2 ~ 26) kg 22 mg (26 ~ 60) kg 0.77 g (60 ~ 100) kg 1.7 g (100 ~ 150) kg 6.8 g (150 ~ 200) kg 15 g (200 ~ 300) kg 65 g (300 ~ 600) kg 0.13 kg Platform scale balances (0 ~ 20) kg 1.2 g Standard weights (20 ~ 200) kg kg /HCT-CS Spring scale balances (0 ~ 1) kg 2.9 g Standard weights (1 ~ 2) kg 5.8 g /HCT-CS (2 ~ 5) kg 12 g (5 ~ 10) kg 29 g (10 ~ 30) kg 58 g (30 ~ 50) kg 0.12 kg Weights Weights, Balance F1 class 1 mg 4.6 μg /HCT-CS mg 4.6 μg 5 mg 4.6 μg 10 mg 5.1 μg 20 mg 5.1 μg 50 mg 5.8 μg 100 mg 6.6 μg 200 mg 7.4 μg 500 mg 9.1 μg 1 g 11 μg 2 g 14 μg 5 g 17 μg 10 g 21 μg 20 g 27 μg 50 g 36 μg 100 g 55 μg 200 g 0.11 mg 500 g 0.29 mg 1 kg 0.55 mg 2 kg 1.1 mg 5 kg 2.9 mg 10 kg 5.5 mg 20 kg 11 mg

8 202. Force Accreditation No. : KC00-011(10/106) Force measuring devices hydraulic force standards, Force (0.5 ~ 5) kn Deadweight force standards (5 ~ 10) kn / HCT-CS (10 ~ 20) kn (20 ~ 50) kn (50 ~ 100) kn Tension/compression testing machines Electric force measuring devices Compression (0 ~ 10) N /HCT-CS (10 ~ 20) N (20 ~ 50) N (50 ~ 100) N (100 ~ 200) N (200 ~ 500) N (500 ~ 1 000) N (1 ~ 2) kn (2 ~ 5) kn (5 ~ 10) kn (10 ~ 20) kn (20 ~ 50) kn (50 ~ 100) kn (100 ~ 200) kn (200 ~ 500) kn (500 ~ 1 000) kn Tensile (0 ~ 50) N (50 ~ 100) N (100 ~ 200) N (200 ~ 500) N (500 ~ 1 000) N (1 ~ 2) kn (2 ~ 5) kn (5 ~ 10) kn (10 ~ 20) kn (20 ~ 50) kn (50 ~ 100) kn (100 ~ 200) kn Push-pull gauges (0.2 ~ 50) N Deadweight force standards, (50 ~ 1 000) N Weights /HCT-CS (1 000 ~ 2 000) N Torque Torque measuring devices (0.05 ~ 100) N m Weights, Torque arm Torque wrenches/drivers /HCT-CS clockwise (0.1 ~ 1) N m Torque testers (1 ~ 2.5) N m /HCT-CS (2.5 ~ 5) N m (5 ~ 10) N m (10 ~ 25) N m (25 ~ 50) N m

9 Accreditation No. : KC00-011(11/106) 203. Torque clockwise (50 ~ 100) N m (100 ~ 250) N m (250 ~ 500) N m (500 ~ 1 000) N m counterclockwise (0.1 ~ 1) N m (1 ~ 2.5) N m (2.5 ~ 5) N m (5 ~ 10) N m (10 ~ 25) N m (25 ~ 50) N m (50 ~ 100) N m (100 ~ 250) N m (250 ~ 500) N m (500 ~ 1 000) N m 압력 Absolute pressure gauges Pressure calibrators 60 kpa abs. ~ 7 Mpa abs / HCT-CS Compound pressure gauges Pressure calibrators -95 kpa ~ 7 MPa Dead weight tester / HCT-CS Differential pressure gauges Pressure calibrators Pneumatic (0 ~ 7) MPa Dead weight tester / HCT-CS Differential pressure gauges Pressure calibrators Dead weight tester Gauge pressure gauges, / HCT-CS Pressure generators/controllers Pneumatic (0 ~ 350) kpa (0.35 ~ 5) MPa (5 ~ 10) MPa Hydraulic (0.5 ~ 200) MPa Recorders, pressure Pneumatic (0 ~ 350) kpa (0.35 ~ 5) MPa (5 ~ 10) MPa Hydraulic (0.5 ~ 200) MPa Pressure transducers/transmitters Pressure calibrators Pneumatic (0 ~ 350) kpa Dead weight tester (0.35 ~ 5) MPa / HCT-CS (5 ~ 10) MPa kpa abs. ~ 7 Mpa abs Hydraulic (0.5 ~ 200) MPa Dial type vacuum gauges (-95 ~ 0) kpa Pressure calibrators /HCT-CS

10 Accreditation No. : KC00-011(12/106) 204. Pressure Water Depth meters (0 ~ 2) MPa Pressure calibrators /HCT-CS Fluid flow Anemometers; hot-wire (0.1 ~ 2) m/s Laser Doppler (2 ~ 55) m/s / HCT-CS Anemometers; pitot tube, etc (0.1 ~ 2) m/s Laser Doppler (2 ~ 55) m/s / HCT-CS Anemometers; vane, etc (0.1 ~ 2) m/s Laser Doppler (2 ~ 55) m/s / HCT-CS Time/frequency Frequency standards Atomic clock Timebase Frequency 100 khz ~ 10 MHz /HCT-CS General frequency sources Atomic clock Timebase Frequency 100 khz ~ 100 MHz /HCT-CS Frequency meters/counters standard frequency, Input Frequency DC ~ 3 GHz General frequency sources 3 GHz ~ 40 GHz 0.58 Hz /HCT-CS Timebase Frequency 100 khz ~ 10 MHz Time interval sources Frequency Counterss Time interval 0.1 ns ~ 1 ns /HCT-CS ns ~ 10 ns ns ~ 100 ns ns ~ 1 μs μs ~ 10 μs μs ~ 100 μs μs ~ 1 ms ms ~ 10 ms ms ~ 100 ms ms ~ 5 s Frequency 0.1 Hz ~ 1 Hz Hz ~ 10 Hz Hz ~ 100 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 100 khz khz ~ 1 MHz MHz ~ 10 MHz MHz ~ 100 MHz MHz ~ 1 GHz Time interval meters/stop watches Atomic clock /Timers Time 1 ms ~ s Period (1 ~ ) s /HCT-CS

11 Accreditation No. : KC00-011(13/106) 302. Velocity & revolution Standard RPM generators (1 ~ 1 000) min ¹ min ¹ Atomic clock (1 000 ~ ) min ¹ min ¹ /HCT-CS Contact type tachometers (1 ~ 4 000) min ¹ min ¹ Atomic clock /HCT-CS Photo tachometers/stroboscopes (1 ~ 300) min ¹ min ¹ Atomic clock (300 ~ 6 000) min ¹ min ¹ /HCT-CS (6 000 ~ ) min ¹ min ¹ Wow-flutter generators Atomic clock Wow-flutter Deflection 0.01 % ~ 3 % /HCT-CS Frequency 0.1 Hz ~ khz Level 100 mv ~ 10 V Wow-flutter meters Wow-flutter measure Wow-flutter Deflection 0.01 % /HCT-CS % % % % % Input frequency 10 Hz 0.58 Hz khz 5.8 Hz Output frequency 3.00 khz 0.58 Hz 3.15 khz 0.58 Hz CCIR PULSE 10 ms ~ 100 ms DC volatage & current DC ammeters Current Calibrators, DC Current (0 ~ 100) μa Multimeter calibrators (0.1 ~ 1) ma / HCT-CS (1 ~ 10) ma (10 ~ 100) ma (0.1 ~ 1) A (1 ~ 10) A (10 ~ 100) A Transconductance amplifiers Current shunts, DC Current (0 ~ 100) μa Multimeter calibrators (0.1 ~ 10) ma / HCT-CS (10 ~ 100) ma (0.1 ~ 1) A (1 ~ 10) A (10 ~ 100) A AC Current (50 Hz ~ 100 Hz) (0 ~ 100) μa (0.1 ~ 1) ma (0.001 ~ 10) A (10 ~ 100) A

12 Accreditation No. : KC00-011(14/106) 401. DC volatage & current AC Current (100 Hz ~ 1 khz) (0 ~ 100) μa (0.1 ~ 1) ma (0.001 ~ 1) A (1 ~ 10) A (10 ~ 100) A (1 khz ~ 10 khz) (0 ~ 100) μa (0.1 ~ 1) ma (0.001 ~ 1) A (1 ~ 10) A (10 ~ 100) A (10 khz ~ 100 khz) (0 ~ 100) μa (0.1 ~ 1) ma (0.001 ~ 10) A (10 ~ 100) A DC voltage/current calibrators Digital Multimeters DC Current Source (0 ~ 1) ma Current shunts (0 ~ -1) ma /HCT-CS (1 ~ 10) ma (-1 ~ -10) ma (10 ~ 100) ma (-10 ~ -100) ma (0.1 ~ 1) A (-0.1 ~ -1) A (1 ~ 10) A (-1 ~ -10) A (10 ~ 100) A DC Voltage Source (0 ~ 100) mv (0 ~ -100) mv (0.1 ~ 1) V (-0.1 ~ -1) V (1 ~ 10) V (-1 V ~ -10) V (10 ~ 100) V (-10 ~ -100) V (100 ~ 1 000) V (-100 ~ ) V Electrical temperature calibrators Digital Multimeters DC Current (0 ~1) ma /HCT-CS (1 ~10) ma (10 ~ 20) ma DC Voltage (-10 ~ 0) mv V 0.13 μv (0 ~ 1) mv (1 ~ 10) mv (10 ~ 100) mv (0.1 ~ 1) V

13 Accreditation No. : KC00-011(15/106) 401. DC volatage & current Resistance (0 ~ 10) Ω (0.01 ~ 10) kω DC current shunts Digital Multimeter, 0.1 mω Multimeter calibrators, (0.2 ~ 0.333) mω Current Calibrators/ (0.333 ~ 0.5) mω HCT-CS (0.5 ~ 8) mω (8 ~ 10) mω (10 ~ 16) mω (16 ~ 80) mω (0.08 ~ 0.1) Ω (0.1 ~ 0.16) Ω (0.16 ~ 0.4) Ω (0.4 ~ 0.8) Ω (0.8 ~ 1) Ω (1 ~ 1.6) Ω (1.6 ~ 4) Ω (4 ~ 8) Ω (8 ~ 10) Ω (10 ~ 16) Ω (16 ~ 40) Ω (40 ~ 80) Ω (80 ~ 100) Ω (100 ~ 800) Ω (800 ~ 1 000) Ω Galvanometers/null detectors Multimeter calibrators, DC Voltage ( 3 ~ 10 ) μv Current shunts ( 10 ~ 30 ) μv /HCT-CS ( 30 ~ 100 ) μv ( 100 ~ 300 ) μv ( 0.1 ~ 1 ) mv ( 1 ~ 3 ) mv ( 3 ~ 10 ) mv ( 10 ~ 30 ) mv ( 30 ~ 100 ) mv ( 100 ~ 300 ) mv ( 0.3 ~ 1 ) V ( 1 ~ 3 ) V ( 3 ~ 10 ) V ( 10 ~ 30 ) V ( 30 ~ 100 ) V ( 100 ~ 300 ) V ( 300 ~ ) V DC power supplies Digital Multimeter, DC Voltage (0 ~ 100) mv Current shunts (0.1 ~ 10) V HCT-CS (10 ~ 100) V (100 ~ 1 000) V

14 Accreditation No. : KC00-011(16/106) 401. DC volatage & current DC Current (0 ~ 100) μa (0.1 ~ 10) ma (10 ~ 100) ma (0.1 ~ 1) A (1 ~ 10) A (10 ~ 100) A (100 ~ 300) A (300 ~ 500) A (500 ~ 1 000) A Ripple (0 ~ 5) mv (5 ~ 10) mv (10 ~ 20) mv Load regulation (0 ~ 5) mv (5 ~ 50) mv (50 ~ 500) mv DC voltage standards Standard cells, DC Voltage V Digital Multimeter 10 V /HCT-CS DC voltmeters Current Calibrators, DC Voltage (0 ~ 10) mv Multimeter calibrators (10 ~ 100) mv /HCT-CS (0.1 ~ 1) V (1 ~ 10) V (10 ~ 100) V (100 ~ 1 000) V Static/Ionic voltmeters Multimeter calibrators, Static Voltage (Positive) (0 ~ 100) V High voltage generators (100 ~ 500) V / HCT-CS (0.5 ~ 1) kv (1 ~ 10) kv (10 ~ 15) kv (15 ~ 20) kv (20 ~ 25) kv (25 ~ 30) kv (30 ~ 35) kv (35 ~ 40) kv (40 ~ 45) kv (45 ~ 48) kv Static Voltage (Negative) (0 ~ -100) V (-100 ~ -500) V (-0.5 ~ -1) kv (-1 ~ -10) kv (-10 ~ -15) kv (-15 ~ -20) kv (-20 ~ -25) kv (-25 ~ -30) kv

15 Accreditation No. : KC00-011(17/106) 401. DC volatage & current Static Voltage (Negative) (-30 ~ -35) kv (-35 ~ -40) kv (-40 ~ -45) kv (-45 ~ -48) kv Resistance, capacitance and inductance Capacitance bridges/indicators Standard capacitors Frequency 10 Hz ~ 1 khz Counter, Digital Multimeter (1 ~ 10) khz / HCT-CS (10 ~ 100) khz (0.1 ~ 1) MHz (1 ~ 10) MHz (10 ~ 30) MHz AC Voltage (1 ~ 100) mv 20 Hz (0.02 ~ 1) khz (1 ~ 10) khz (10 ~ 100) khz khz ~ 1 MHz (0.1 ~ 1) V 20 Hz (0.02 ~ 10) khz (10 ~ 100) khz (0.1 ~ 1) MHz (1 ~ 10) V 20 Hz (0.02 ~ 10) khz (10 ~ 100) khz (0.1 ~ 1) MHz (10 ~ 20) V 20 Hz (0.02 ~ 1) khz (1 ~ 10) khz (10 ~ 100) khz Capacitance 1 pf 1 khz ~ 1 MHz 0.76 ff (1 ~ 2) MHz 0.78 ff (2 ~ 3) MHz 0.86 ff (3 ~ 4) MHz 0.98 ff (4 ~ 5) MHz 1.2 ff (5 ~ 10) MHz 2.6 ff (10 ~ 13) MHz 3.8 ff (1 ~ 10) pf 1 KHz ~ 5 MHz 3.6 ff (5 ~ 10) MHz 3.8 ff (10 ~ 13) MHz 3.9 ff

16 Accreditation No. : KC00-011(18/106) 402. Resistance, capacitance and inductance Capacitance (10 ~ 100) pf 1 KHz ~ 4 MHz 36 ff (4 ~ 5) MHz 38 ff (5 ~ 10) MHz 49 ff (10 ~ 13) MHz 61 ff (100 ~ 1 000) pf 1 KHz ~ 1 MHz 0.36 pf (1 ~ 2) MHz 0.38 pf (2 ~ 3) MHz 0.45 pf (3 ~ 4) MHz 0.57 pf (4 ~ 5) MHz 0.72 pf (5 ~ 10) MHz 2.0 pf (10 ~ 13) MHz 3.0 pf (1 ~ 10) nf 120 Hz ~ 100 khz 0.82 pf (10~ 100) nf 120 Hz ~ 100 khz 8.2 pf (0.1 ~ 1) μf 120 Hz ~ 10 khz 0.11 nf 10 khz ~ 100 khz 0.13 nf (1 ~ 10)μF 100 Hz ~ 1 khz 3.2 nf (10 ~ 100)μF 100 Hz 71 nf (0.1 ~ 1) khz 77 nf (0.1 ~ 1) mf 100 Hz 1.5 μf (0.1 ~ 1) khz 4.2 μf Decade capacitors khz Capacitance bridges (1 ~ 10) pf LCR Meter 10 pf ~ 1 nf / HCT-CS (1 ~ 100)nF (0.1 ~ 1)μF (1 ~ 10)μF Hz (10 ~ 100)μF (0.1 ~ 1)mF Standard capacitors khz Capacitance bridges 1 pf 7.3 af LCR Meter 10 pf 72 af / HCT-CS pf 0.63 ff 1 nf 6.2 ff 10 nf 0.51 pf 100 nf 5.1 pf

17 Accreditation No. : KC00-011(19/106) 402. Resistance, capacitance and inductance μf 91 pf 10 μf 12 nf 120 Hz 100 μf 0.12 μf 1 mf 1.3 μf Earth testers Decade resistor, Earth Tester 100 mω Standard resistance 100 mω ~ 1 Ω /HCT-CS Ω ~ 10 Ω Ω ~ 100 Ω Ω ~ 1 kω kω ~ 2 kω voltage (DC ~ 1 khz) 1 V ~ 100 V V ~ 600 V current (DC ~ 1 khz) 1 A (1 ~ 10) A (10 ~ 60) A Inductors (1 khz) LCR Meter 0.1 mh ~ 1 mh / HCT-CS mh ~ 1 H Insulation testers High resistance meters, Resistance 1 kω Multimeter calibrators 1 kω ~ 1 MΩ /HCT-CS MΩ ~ 10 MΩ MΩ ~ 100 MΩ MΩ ~ 1 GΩ GΩ ~ 10 GΩ GΩ ~ 100 GΩ GΩ ~ 1 TΩ Insulation voltage 25 V V ~ 800 V V ~ 9 kv voltage (DC ~ 1 khz) 10 V V ~ 600 V Resistance 10 Ω Ω ~ 100 Ω Ω ~ 100 kω

18 Accreditation No. : KC00-011(20/106) 402. Resistance, capacitance and inductance Q- 미터 Frequency Counters, AC Voltage DC ~ 1 khz Digital Multimeters 10 mv 58 μv /HCT-CS mv 0.58 mv 1 V 0.59 mv 10 V 5.9 mv Frequevcy DC ~ 1 khz khz ~ 10 khz khz ~ 100 khz khz ~ 1 MHz MHz ~ 10 MHz MHz ~ 100 MHz Resistance bridges & Similar Standard resistance, instruments Digital Multimeter MEASURING ARM 0.01 Ω 7.5 μω /HCT-CS ~ 0.1Ω 8.5 μω 0.1 Ω ~ 1 Ω 18 μω 1 Ω ~ 10 Ω 0.11 mω 10 Ω ~ 100 Ω 0.90 mω 100 Ω ~ 1 kω 9.0 mω 1 kω ~ 10 kω 90 mω 10 kω ~ 100 kω 0.92 Ω 100 kω ~ 1 MΩ 11 Ω 1 MΩ ~ 10 MΩ 0.26 kω 10 MΩ ~ 100 MΩ 16 kω RATIO ARM Resistance meters Standard resistance, DC Resistance 1 mω 0.25 μω Counter, Digital multimeter 10 mω 1.2 μω HCT-CS mω 0.68 μω 1 Ω 3.3 μω (1 ~ 10) Ω (10 ~ 100) Ω (0.1 ~ 100) kω kω ~ 1 MΩ (1 ~ 10) MΩ (10 ~ 100) MΩ (0.1 ~ 1) GΩ (1 ~ 10) GΩ (10 ~ 100) GΩ (0.1 ~ 1) TΩ

19 Accreditation No. : KC00-011(21/106) 402. Resistance, capacitance and inductance Frequency Hz ~ 1 khz khz ~ 10 khz khz ~ 100 khz khz ~ 1 MHz AC Voltage 20 Hz ~ 1 khz 10 mv mv ~ 100 mv (0.1 ~ 10) V AC Resistance 1 khz 1 Ω 1.2 mω 10 Ω 3.7 mω 100 Ω 36 mω 1 kω 0.36 Ω 10 kω 3.6 Ω 100 kω 36 Ω Resistors Digital Multimeter, Standard Resistance(DC) 1 Ω 4.9 uω LCR meter 10 Ω 0.18 mω / HCT-CS Ω 0.13 mω 100 Ω 0.59 mω 1 kω 5.3 mω 10 kω 27 mω 100 kω 0.80 Ω 1 MΩ 12 Ω 10 MΩ 0.22 kω 100 MΩ 3.1 kω 1 GΩ 49 kω 10 GΩ 3.5 MΩ Standard Resistance(AC) 1 khz 1 Ω 1.2 mω 10 Ω 3.8 mω 100 Ω 36 mω 1 kω 0.36 Ω 10 kω 3.6 Ω 100 kω 36 Ω (1 ~ 100) khz 1 kω 12 Ω 10 kω 0.12 kω 100 kω 1.2 kω (0.1 ~ 1) MHz 10 Ω 0.12 Ω 100 Ω 1.2 Ω 1 kω 12 Ω 10 kω 0.12 kω 100 kω 1.2 kω

20 Accreditation No. : KC00-011(22/106) 402. Resistance, capacitance and inductance Decade Resistance(DC) mω ~ 10 mω mω ~ 100 mω mω ~ 1 Ω Ω ~ 10 Ω Ω ~ 100 Ω Ω ~ 1 kω kω ~ 10 kω kω ~ 100 kω kω ~ 1 MΩ MΩ ~ 10 MΩ MΩ ~100 MΩ MΩ ~ 1 GΩ GΩ ~ 10 GΩ GΩ ~ 100 GΩ GΩ ~ 1 TΩ Decade Resistance(AC) 1 khz 100 mω ~ 10 Ω Ω ~ 100 kω Electrical conductivity meters MS/m MS/m Conductivity STD MS/m 0.16 MS/m /HCT-CS MS/m 0.20 MS/m MS/m 0.33 Ms/m Impedance bridges/lcr meters Counters,Standard Frequency 10 Hz~ 1 khz Resistance,Capacitance, (1 ~ 10) khz Digital Multimeters (10 ~ 100)kHz Inductance/HCT-CS (0.1 ~ 1) MHz (1 ~ 10) MHz (10 ~ 30) MHz AC Voltage (1 ~ 100) mv 20 Hz (0.02 ~ 1) khz (1 ~ 10) khz (10 ~ 100) khz khz ~ 1 MHz (0.1 ~ 1) V 20 Hz (0.02 ~ 10) khz (10 ~ 100) khz (0.1 ~ 1) MHz (1 ~ 10) V 20 Hz (0.02 ~ 10) khz (10 ~ 100) khz (0.1 ~ 1) MHz

21 Accreditation No. : KC00-011(23/106) 402. Resistance, capacitance and inductance AC Voltage (10 ~ 20) V 20 Hz (0.02 ~ 1) khz (1 ~ 10) khz (10 ~ 100) khz DC Voltage 100 mv mv ~ 10 V (10 ~ 40) V Resistance 1 Ω 1 khz 1.2 mω (1 ~ 10) Ω 1 khz 3.6 mω 1 khz ~ 1 MHz 0.12 Ω (5 ~ 10) MHz 0.13 Ω (10 ~ 13) MHz 0.14 Ω (10 ~ 100) Ω 1 khz 36 mω 1 khz ~ 13 MHz 1.2 Ω 100 Ω~ 1 kω 1 khz 0.36 Ω 1 khz ~ 13 MHz 12 Ω 1 kω ~ 10 kω 1 khz 3.6 Ω 1 khz ~ 1 MHz 0.12 kω (10 ~ 100) kω 1 khz 36 Ω 1 khz ~ 1 MHz 1.2 kω Capacitance 1 pf 1 khz ~ 1 MHz 0.76 ff (1 ~ 2) MHz 0.78 ff (2 ~ 3) MHz 0.86 ff (3 ~ 4) MHz 0.98 ff (4 ~ 5) MHz 1.2 ff (5 ~ 10) MHz 2.6 ff (10 ~ 13) MHz 3.8 ff (1 ~ 10) pf 1 khz ~ 5 MHz 3.6 ff (5 ~ 10) MHz 3.8 ff (10 ~ 13) MHz 3.9 ff (10 ~ 100) pf 1 khz ~ 4 MHz 36 ff (4 ~ 5) MHz 38 ff (5 ~ 10) MHz 49 ff (10 ~ 13) MHz 61 ff

22 Accreditation No. : KC00-011(24/106) 402. Resistance, capacitance and inductance Capacitance (100 ~ 1 000) pf 1 khz ~ 1 MHz 0.36 pf (1 ~ 2) MHz 0.38 pf (2 ~ 3) MHz 0.45 pf (3 ~ 4) MHz 0.57 pf (4 ~ 5) MHz 0.72 pf (5 ~ 10) MHz 2.0 pf (10 ~ 13) MHz 3.0 pf (1 ~ 10) nf 120 Hz ~ 100 khz 0.82 pf (10~ 100) nf 120 Hz ~ 100 khz 8.2 pf (0.1 ~ 1) μf 120 Hz ~ 10 khz 0.11 nf 10 khz ~ 100 khz 0.13 nf (1 ~ 10) μf 100 Hz ~ 1 khz 3.2 nf (10 ~ 100) μf 100 Hz 71 nf (0.1 ~ 1) khz 77 nf (0.1 ~ 1) mf 100 Hz 1.5 μf (0.1 ~ 1) khz 4.2 μf Inductance 1 khz 100 uh 16 nh 100 uh ~ 1 mh 0.15 μh 1 mh ~ 10 mh 1.4 μh 10 mh ~ 100 mh 16 μh 100 mh ~ 1 H 0.15 mh 403. AC voltage, current & power AC ammeters Multimeter calibrators AC Current 10 μa / HCT-CS Hz ~ 60 Hz Hz ~ 1 khz (10 μa ~ 10 ma) 40 Hz Hz ~ 1 khz khz ~ 10 khz

23 Accreditation No. : KC00-011(25/106) 403. AC voltage, current & power AC Current (10 ma ~ 100 ma) 40 Hz Hz ~ 1 khz khz ~ 10 khz (100 ma ~ 1 A) 40 Hz ~ 1 khz khz ~ 10 khz (1 A ~ 10 A) 50 Hz ~ 60 Hz Hz ~ 1 khz (10 A ~ 20 A) 50 Hz ~ 60 Hz Hz ~ 1 khz (20 A ~ 50 A) 50 Hz ~ 60 Hz (50 A ~ 100 A) 50 Hz ~ 60 Hz AC Voltage (0 V ~ 10 V) 40 Hz Hz ~ 10 khz (1 V ~ 10 V) 40 Hz Hz ~ 10 khz (10 V ~ 75 V) 40 Hz Hz ~ 10 khz (75 V ~ 150 V) 40 Hz ~ 1 khz (150 V ~ 300 V) 50 Hz Hz ~ 1 khz (300 V ~ 750 V) 50 Hz Hz ~ 1 khz Clamp ammeters/voltmeters Multimeter calibrators, DC Voltage 0 mv ~ 100 mv Coil 100 mv ~ 100 V / HCT-CS V ~ V

24 Accreditation No. : KC00-011(26/106) 403. AC voltage, current & power AC Voltage (0 mv ~ 100 mv) 40 Hz Hz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (100 mv ~ 1 V) 40 Hz Hz ~ 20 khz khz ~ 100 khz (1 V ~ 10 V) 40 Hz ~ 10 khz khz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (10 V ~ 100 V) 40 Hz ~ 10 khz khz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (100 V ~ V) 50 Hz Hz ~ 1 khz DC Current 0 ma ~ 1 A A ~ 10 A A ~ 50 A A ~ 100 A A ~ 200 A A ~ 300 A A ~ 400 A A ~ 500 A A ~ 750 A A ~ A A ~ A A ~ A A ~ A AC Current (0 ma ~ 10 ma) 40 Hz ~ 1 khz khz ~ 10 khz (10 ma ~ 100 ma) 40 Hz ~ 1 khz khz ~ 10 khz (100 ma ~ 1 A) 40 Hz ~ 1 khz khz ~ 10 khz

25 Accreditation No. : KC00-011(27/106) 403. AC voltage, current & power AC Current (1 A ~ 10 A) 40 Hz ~ 60 Hz Hz ~ 1 khz (10 A ~ 100 A) 60 Hz (100 A ~ 200 A) 60 Hz (200 A ~ 300 A) 60 Hz (300 A ~ 500 A) 60 Hz (500 A ~ 900 A) 60 Hz (900 A ~ A) 60 Hz (1 000 A ~ A) 60 Hz (1 500 A ~ A) 60 Hz (2 000 A ~ A) 60 Hz (2 500 A ~ A) 60 Hz Resistance 0 Ω ~ 1 Ω Ω ~ 10 Ω Ω ~ 100 Ω Ω ~ 1 kω kω ~ 100 kω kω ~ 1 MΩ MΩ ~ 10 MΩ MΩ~ 100 MΩ Current Coil (AC Ratio) % % % % Current Coil (DC Ratio) % % % %

26 Accreditation No. : KC00-011(28/106) 403. AC voltage, current & power AC voltage/current calibrators Multimeters AC Voltage (0 ~ 100) mv / HCT-CS Hz ~ 55 Hz Hz ~ 300 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 30 khz khz ~ 100 khz (0.1 ~ 1) V 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 30 khz khz ~ 100 khz (1 ~ 10) V 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 30 khz khz ~ 100 khz (10 ~ 100) V 40 Hz ~ 55 Hz Hz ~ 300 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 30 khz khz ~ 100 khz (100 ~ 1 000) V 40 Hz ~ 300 Hz Hz ~ 10 khz AC Current (0 ~ 100) μa 40 Hz ~ 55 Hz Hz ~ 300 Hz Hz ~ 1 khz khz ~ 10 khz (0.1 ~ 1) ma 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz (1 ~ 10) ma 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz

27 Accreditation No. : KC00-011(29/106) 403. AC voltage, current & power AC Current (10 ~ 100) ma 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz (0.1 ~ 1) A 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz (1 ~ 10) A 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz (10 ~ 50) A 40 Hz ~ 1 khz (50 ~ 100) A 40 Hz ~ 1 khz AC current shunts Current Source AC Resistance 40 Hz / HCT-CS Ω (0.001 ~ 0.01 Ω) (0.01 ~ 0.1 Ω) (0.1 ~ 1 Ω) (1 ~ 100 Ω) (100 ~ Ω) (40 Hz ~ 100 Hz ) Ω (0.001 ~ 0.01 Ω) (0.01 ~ 0.1 Ω) (0.1 ~ 1 Ω) (1 ~ 100 Ω) (100 ~ Ω) (100 Hz ~ 1 khz ) (0.001 ~ 0.01 Ω) (0.01 ~ 0.1 Ω) (0.1 ~ 1 Ω) (1 ~ 100 Ω) (100 ~ Ω) Power factor meters (50 ~ 60 Hz) Power Calibrators -1 ~ / HCT-CS

28 Accreditation No. : KC00-011(30/106) 403. AC voltage, current & power AC power meters Power Calibrators, AC Power (50 Hz ~ 60 Hz) Multimeter calibrators 0.01 W ~ 0.12 W / HCT-CS W ~ 0.24 W W ~ 0.6 W W ~ 1.2 W W ~ 2.4 W W ~ 4.8 W W ~ 6.0 W W ~ 12 W W ~ 24 W W ~ 60 W W ~ 120 W W ~ 480 W W ~ 600 W kw ~ 1.2 kw kw ~ 2.4 kw kw ~ 4.8 kw kw ~ 12 kw kw ~ 50 kw DC Power 0.01 W ~ 0.12 W W ~ 0.24 W W ~ 0.6 W W ~ 1.2 W W ~ 2.4 W W ~ 4.8 W W ~ 6.0 W W ~ 12 W W ~ 24 W W ~ 60 W W ~ 120 W W ~ 480 W W ~ 600 W kw ~ 1.2 kw kw ~ 20 kw Power Factor (50 Hz ~ 60 Hz) -1 ~ AC Voltage (40 Hz ~ 1 khz) 0.1 V ~ 1 V V ~ 2 V V ~ 5 V V ~ 10 V V ~ 20 V V ~ 50 V V ~ 100 V V ~ 200 V V ~ 300 V V ~ 500 V V ~ 600 V V ~ V

29 Accreditation No. : KC00-011(31/106) 403. AC voltage, current & power AC Current (40 Hz ~ 1 khz) 0.1 ma ~ 10 ma ma ~ 20 ma ma ~ 50 ma ma ~ 100 ma ma ~ 200 ma ma ~ 500 ma A ~ 1 A A ~ 2 A A ~ 5 A A ~ 10 A A ~ 20 A A ~ 30 A A ~ 50 A DC Voltage 0.1 V ~ 1 V V ~ 2 V V ~ 5 V V ~ 10 V V ~ 20 V V ~ 50 V V ~ 60 V V ~ 100 V V ~ 150 V V ~ 200 V V ~ 300 V V ~ 500 V V ~ 600 V V ~ 750 V V ~ V DC Current 0.1 ma ~ 10 ma ma ~ 20 ma ma ~ 100 ma ma ~ 200 ma ma ~ 500 ma A ~ 1 A A ~ 2 A A ~ 5 A A ~ 10 A A ~ 20 A A ~ 30 A A ~ 50 A Harmonic Voltage (50 Hz ~ 60 Hz) 0.5 % % ~ 1 % % ~ 3 % % ~ 5 % % ~ 10 % % ~ 20 %

30 Accreditation No. : KC00-011(32/106) 403. AC voltage, current & power Harmonic Current (50 Hz ~ 60 Hz) 0.5 % ~ 1 % % ~ 3 % % ~ 5 % % ~ 10 % % ~ 20 % Frequency 1 Hz ~ 20 Hz Hz ~ 50 Hz Hz ~ 60 Hz Hz ~ 100 Hz Hz ~ 200 Hz Hz ~ 400 Hz Hz ~ 600 Hz Hz ~ 1 khz Flicker P st 1 ~ 4000 cpm 0 ~ % P inst.max 0 ~ 1.5 Hz(Sinusoidal) 0 ~ % 1.5 ~ 8.8 Hz(Sinusoidal) 0 ~ % 8.8 ~ 20 Hz(Sinusoidal) 0 ~ % 20 ~ 25 Hz(Sinusoidal) 0 ~ % 25 ~ Hz(Sinusoidal) 0 ~ % 0 ~ 28 Hz(Square) 0 ~ % 28 ~ 30.5 Hz(Square) 0 ~ % 30.5 ~ Hz(Square) 0 ~ % P st 0 ~ % 0.25 ~ % AC power supplies Multimeters AC Voltage (10 mv ~ 100 mv ) / HCT-CS Hz ~ 1 khz khz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (100 mv ~ 1 V ) 20 Hz ~ 1 khz khz ~ 20 khz khz ~ 100 khz (1 V ~ 10 V ) 20 Hz ~ 1 khz khz ~ 20 khz khz ~ 100 khz

31 Accreditation No. : KC00-011(33/106) 403. AC voltage, current & power AC Voltage (10 V ~ 100 V ) 20 Hz ~ 1 khz khz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (100 V ~ V ) 20 Hz ~ 1 khz khz ~ 20 khz DC Voltage (100 mv ~ 100 V) (100 V ~ V) AC Current (10 μa ~ 100 μa) 40 Hz ~ 1 khz khz ~ 10 khz (100 μa ~ 1 ma) 40 Hz ~ 55 Hz Hz ~ 300 Hz Hz ~ 10 khz (1 ma ~ 10 ma) 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 3 khz khz ~ 10 khz (10 ma ~ 100 ma) 40 Hz ~ 55 Hz Hz ~ 1 khz khz ~ 10 khz (100 ma ~ 1 A) 40 Hz ~ 1 khz khz ~ 3 khz khz ~ 10 khz (1 A ~ 10 A) 40 Hz ~ 1 khz khz ~ 10 khz (10 A ~ 45 A) 40 Hz ~ 1 khz DC Current (10 μa ~ 1 ma) (1 ma ~ 10 ma) (10 ma ~ 100 ma) (100 ma ~ 1 A) (1 A ~ 10 A) (10 A ~ 100 A) Frequency (20 Hz) (20 Hz ~ 100 khz)

32 Accreditation No. : KC00-011(34/106) 403. AC voltage, current & power Puncture/safety testers High voltage voltmeters, AC Voltage (0.1 ~ 1) kv Digital Multimeter (1 ~ 2) kv / HCT-CS (2 ~ 6) kv (6 ~ 10) kv (10 ~ 20) kv (20 ~ 75) kv DC Voltage (0.1 ~ 1) kv (1 ~ 2) kv (2 ~ 4) kv (4 ~ 10) kv (10 ~ 20) kv (20 ~ 30) kv (30 ~ 40) kv (40 ~ 50) kv (50 ~ 80) kv (80 ~ 90) kv (90 ~ 100) kv AC Cutoff Current 0.5 ma (0.5 ~ 1) ma (1 ~ 5) ma (5 ~ 10) ma (10 ~ 20) ma (20 ~ 50) ma (50 ~ 100) ma DC Cutoff Current 0.5 ma (0.5 ~ 1) ma (1 ~ 5) ma (5 ~ 10) ma (10 ~ 20) ma (20 ~ 50) ma (50 ~ 100) ma Insulation Voltage (10 ~ 300) V (300 ~ 500) V (500 ~ 800) V (0.8 ~ 2) kv (2 ~ 4) kv (4 ~ 10) kv Insulation Resistance (0.1 ~ 1) kω (1 ~ 10) kω (10 ~ 100) kω (0.1 ~ 1) MΩ (1 ~ 10) MΩ (10 ~ 100) MΩ (0.1 ~ 1) GΩ (1 ~ 10) GΩ (10 ~ 100) GΩ

33 Accreditation No. : KC00-011(35/106) 403. AC voltage, current & power Ground Bond AC Current (50 Hz ~ 100 Hz) (0.1 ~ 2) A (2 ~ 10) A (10 ~ 20) A (20 ~ 30) A (30 ~ 60) A Ground Bond Resistance (100 ~ 500) mω Power recorders Power Calibrators, Power Multimeter calibrators (50 Hz ~ 60 Hz) / HCT-CS W ~ 10 W W ~ 24 W W ~ 48 W W ~ 60 W W ~ 120 W W ~ 240 W W ~ 600 W W ~ 1.2 kw kw ~ 2.4 kw kw ~ 4.8 kw kw ~ 6 kw kw ~ 12 kw kw ~ 24 kw kw ~ 50 kw AC Voltage (50 Hz ~ 60 Hz) 1 V ~ 50 V V ~ 100 V V ~ 200 V V ~ 300 V V ~ 400 V AC Current (50 Hz ~ 60 Hz) 0.1 A ~ 1 A A ~ 2 A A ~ 5 A A ~ 10 A A ~ 20 A A ~ 50 A A ~ 100 A A ~ 200 A AC voltmeters Multimeter calibrators, DC voltage (1 ~ 2) mv Digital Multimeter (-1 ~ -2) mv / HCTD-CS (2 ~ 10) mv (-2 ~ -10) mv (10 ~ 100) mv (-10 ~ -100) mv (0.1 ~ 1) V (-0.1 ~ -1) V

34 Accreditation No. : KC00-011(36/106) 403. AC voltage, current & power DC Voltage (1 ~ 10) V (-1 ~ -10) V (10 ~ 100) V (-10 ~ -100) V (100 ~ 1 000) V (-100 ~ ) V AC Voltage (1 mv ~ 2 mv) 40 Hz Hz khz khz khz khz khz khz MHz (2 mv ~ 10 mv) 40 Hz Hz khz khz khz khz khz khz MHz (10 mv ~ 100 mv) 40 Hz Hz khz khz khz khz khz khz MHz (100 mv ~ 1 V) 10 Hz Hz Hz Hz khz khz khz khz khz khz MHz

35 Accreditation No. : KC00-011(37/106) 403. AC voltage, current & power AC Voltage (1 V ~ 10 V) 10 Hz Hz Hz Hz khz khz khz khz khz khz MHz (10 V ~ 100 V) 10 Hz ~ 40 Hz Hz ~ 100 Hz Hz ~ 1 khz khz ~ 10 khz khz ~ 20 khz khz ~ 50 khz khz ~ 100 khz (100 V ~ V) 40 Hz Hz khz khz khz Frequency 1 Hz ~ 10 Hz Hz ~ 1 KHz KHz ~ 1 MHz MHz ~ 10 MHz MHz ~ 50 MHz Frequency response 0 db ( V) 20 Hz ~ 100 khz db 100 khz ~ 200 khz db Output voltage (0 V ~ 1 V) 100 Hz ~ 20 khz khz ~ 50 khz Other DC & LF measurements LF amplifiers Multimeter calibrators, Gain (DC ~ 1 khz) Digital Multimeter 0 V ~ 1 V V ~ 10 V V ~ 100 V

36 Accreditation No. : KC00-011(38/106) 404. Other DC & LF measurements Gain (1 khz ~ 10 khz) 0 V ~ 1 V V ~ 10 V V ~ 100 V (10 khz ~ 100 khz) 0 V ~ 1 V V ~ 10 V V ~ 100 V (DC ~ 1 khz) 0 ~ 60 db db (1 khz ~ 20 khz) 0 ~ 60 db db (20 khz ~ 100 khz) 0 ~ 40 db db DC/LF attenuators Function Generator, Attenuator (20 Hz ~ 10 khz) Digital Multimeters 0 db ~ 60 db db /HCT-CS (10 ~ 20) khz 0 db ~ 60 db db (20 ~ 50) khz 0 db ~ 60 db db (50 ~ 100) khz 0 db ~ 60 db db Multimeter calibrators Standard cell,standard resistance, DC Voltage 0 mv 0.13 μv Standard Divider,AC Calibrator (0 ~ 100) mv Digital Multimeter (-0 ~ -100) mv /HCT-CS (0.1 ~ 1) V (-0.1 ~ -1) V (1 ~ 10) V (-1 ~ -10) V (10 ~ 100) V (-10 ~ -100) V (100 ~ 1 000) V (-100 ~ ) V AC Voltage (10 Hz) 0.1 mv ~ 100 mv V ~ 1 V V ~ 10 V V ~ 100 V (10 Hz ~ 40 Hz) 0.1 mv ~ 100 mv V ~ 1 V V ~ 10 V V ~ 100 V V ~ V