Labs whose accredited scope includes electrical, mass, temperature or pressure calibration. Calibration compares a measuring instrument with a reference of known accuracy and states the difference and its uncertainty. 336 accredited labs in 27 countries have electrical, mass, temperature or pressure calibration in their scope. Most of them are in United States, Canada and Japan. The most common standards in these scopes are ANSI/NCSL Z540-1-1994, ASTM E18 and ASTM E4.
Instruments typically calibrated: multimeters, oscilloscopes, power supplies, electrical calibrators, balances, scales, weights, load cells, force machines, torque tools, thermometers, thermocouples, temperature baths, furnaces, climatic chambers, pressure gauges, pressure transducers, deadweight testers and vacuum gauges. Calibration of length and geometry instruments belongs to dimensional metrology.
San Diego, CA, US
Parameter/Equipment Range CMC2, 6 (±) Comments DC Current – Generate3 Clamp-On Only (0 to 329.999) µA (0.33 to 3.299 99) mA (3.3 to 32.9999) mA (33 to 329.9999) mA 330 mA to 1.099 99 A (1.1 to 2.999 99
Scottsdale, AZ, US
Parameter/Range Frequency CMC2, 5 (±) Comments AC Voltage – Measure3 Up to 200 mV (0.2 to 2) V (2 to 20) V (20 to 200) V (0.2
Tukwila, WA, US
Parameter/Range Frequency CMC2, 5, 7 (±) Comments AC Voltage3 – Generate (1 to 33) mV (33 to 330) mV 330 mV to 3.3 V (3.3 to 33) V (33 to 330) V (330 to 1020) V
Danville, VA, US
Parameter/Range Frequency CMC2, 7 (±) Comments AC Current3 – Generate (29 to 330) µA 330 µA to 3.3 mA (3.3 to 33) mA (33 to 330) mA 330 mA to 1.1 A (1.1 to 3) A (3
Centerville, GA, US
Parameter/Equipment Range CMC2, 5, 6 (±) Comments DC Current – Measure & Generate Generate High Current – Generate 0.1 μA to 2 A (2 to 20) A (20 to 100) A (100 to 975) A 0.01 % 0.03 % 0.07 %
Deerfield Beach, FL, US
Parameter/Range Frequency CMC2, 5 (±) Comments AC Voltage – Measure3 Up to 10 mV (10 to 100) mV 100 mV to 1 V (1 to 10) V (10 to 100) V
Plattsburgh, NY, US
Parameter/Range Frequency CMC2, 6, 7 (±) Comments AC Current – Generate (cont) (0.22 to 2.2) A (2.2 to 11) A 40 Hz to 1 kHz (1 to 5) kHz (5 to 10) kHz 40 Hz to 1 kHz (1 to 5) kHz (5 to 10) kHz
Cd. Juarez Chihuahua, MX
VII. Time & Frequency Parameter/Equipment Range CMC2, 7 (±) Comments Frequency – Measuring Equipment 3 (0.1 to 3000) MHz (0.001/MHz + 0.009) Hz Synthesized signal generator 8664A Frequency – Measure 3
Westminster, MD, US
Parameter/Equipment Range CMC2, 4, 6 (±) Comments DC Current – Measure3 Up to 100 µA (0.1 to 1) mA (1 to 10) mA (10 to 100) mA (0.1 to 1) A 23 µA/A + 0.80 nA 23 µA/A + 5.0 nA 23 µA/A + 50 nA 39 µA/A + 0.5 µA
Newnan, GA, US
Parameter/Range Frequency CMC2, 3 (±) Comments AC Voltage – Measure (cont) (>0.1999 to 1.999 900 00) V (>1.9999 to 19.999 000 0) V (>19.999 to 199.990 000) V (>199.99 to 1050) V
North Charleston, SC, US
Parameter/Range Frequency CMC2, 4, 6 (±) Comments Resistance – Generate3 (0 to 12) Ω (12 to 120) Ω 120 Ω to 1.2 kΩ (1.2 to 12) kΩ (12 to 120) kΩ 120 kΩ to 1.2 MΩ (1.2 to 12) MΩ (12 to 120) MΩ 120 MΩ to 1.2 GΩ
Mississauga, CA
Parameter/Range Frequency CMC2, 5 (±) Comments AC Current3 – Generate (cont) Clamp-On Meters: (Toroidal Type) (20 to 54.999) A (55 to 149.999) A (150 to 1025) A (20 to 54.999) A (55 to 149.999) A (150 to 40
Bossier City, LA, US
Parameter/Range Frequency CMC2, 4 (±) Comments Location 9 AC Voltage – Measure3 Up to 100 mV (0.1 to 1) V (1 to 10) V (10 to 100) V (100 to 750)
Duluth, GA, US
III. Electrical – RF/Microwave Parameter/ Range Frequency CMC2, 9 (±) Comments Attenuation – Measure3 (0 to 71) dB 1000 Hz DC to 20 kHz 0.026 dB (absolute) 0.023 dB (relative) 0.037 dB (absolute) 0.035
Forest, VA, US
Parameter/Equipment Range CMC2, 7,9 (±) Comments Resistance – Generate3 (0 to 11) Ω (11 to 33) Ω (33 to 110) Ω 110 Ω to 1.1 kΩ (1.1 to 11) kΩ (11 to 110) kΩ 110 kΩ to 1.1 MΩ (1.1 to 3.3) MΩ
Providence Forge, VA, US
Parameter/Range Frequency CMC2, 4 (±) Comments AC Current – Generate3 (cont) (11 to 20.5) A Clamp-On Ammeters (3.2 to 200) A (16 to 1000) A (45 to 100) Hz 100 Hz to 1 kHz (1 to 5) k
Twinsburg, OH, US
ASTM -E220 and customer requirements. 4 The stated measured values are determined using the indicated instrument (see Comments). This capability is suitable for the calibration of the devices intended to measure or generate the measure
Vista, CA, US
II. Electrical – DC/Low Frequency Parameter/Equipment Range CMC2, 5 (±) Comments DC Voltage3 – Generate Up to 329.999 mV (0.33 to 3.299 999) V (3.3 to 32.999 99) V (33 to 329.9999) V (0.1 to 1) kV 15 μV/V +
Hialeah, FL, US
Parameter/Equipment Frequency CMC2, 4, 5, 7 (±) Comments AC Voltage – Generate (cont) (2.2 to 22) mV (22 to 220) mV 220 mV to 2.2 V (2.2 to 22) V (22 to 220) V
Milton Ontario, CA
Parameter/Equipment Range CMC2, 5 (±) Comments Frequency – Measuring Equipment3 (0.01 to 119.99) Hz (120 to 1199.9) Hz (1.2 to 11.999) kHz (12 to 119.99) kHz (120 to 1199.9) kHz (1.2 to 2) MHz 5.8 mHz 5
Winston-Salem, NC, US
Parameter/Range Frequency CMC2, 3 (±) Comments AC Voltage – Measure (cont) (10 to 100) V (100 to 1000) V (1 to 40) Hz 40 Hz to 1 kHz (1 to 20) kHz (20 to 50) kHz (50 to 100) kHz (100 to 300) kH
Longmont, CO, US
IV. Time & Frequency Parameter/Equipment Range CMC2, 5, 7 (±) Comments Frequency – Generate Equipment3 Rubidium Standard 10 MHz Up to 80 MHz Up to 26.5 GHz (1 x 10 -9) Hz + 0.58R (1 x
Tijuana, MX
Parameter/Equipment Range CMC2, 6 (±) Comments Resistance – Generate3 (0.01 to 0.10) Ω (0.10 to 1.0) Ω (1.0 to 10.0) Ω (10.0 to 100.0) Ω (100.0 to 1000.0) Ω (1.0 to 10.0) kΩ 4.6 mΩ/Ω + 2 mΩ 4.6 mΩ/Ω + 2.1 mΩ 5.2
Sparks, NV, US
III. Mechanical Parameter/Equipment Range CMC2, 4 (±) Comments Pressure and Vacuum – Measure and Measuring Equipment (-12.0 to 30) psig (0 to 600) psig (0 to 5000) psig 0.015 psig + 0.6R 0.15 psig + 0.6R
Inman, SC, US
IV. Mechanical Parameter/Equipment Range CMC2, 4, 5 (±) Comments Force –Impulse Hammers and Dynamic Force Cells Up to 5000 lbf 0.53 % Calibrated mass and accelerometers _________________
Schererville, IN, US
AMS 2750 w/ recorder, & precision thermocouples VI. Time & Frequency Parameter/Equipment Range CMC2, 6 (±) Comments Frequency3 – Measure (3 to 10) Hz (10.1 to 40) Hz 40 Hz to 100 kHz 0.01 Hz 0.01 H
Doha, QA
Parameter/Equipment Range CMC2, 6 (±) Comments DC High Voltage – Measure Up to 5 kV (5 to 10) kV (10 to 15) kV (15 to20) kV (20 to 30) kV (30 to 40) kV 0.12 kV 0.31 kV 0.53 kV 0.61 kV 0.88 kV 1.
Newtown, CT, US
Parameter/Equipment Range CMC2, 4, 6 (±) Comments DC Current – Generate Clamp-on Only (0 to 330) µA 330 µA to 3.3 mA (3.3 to 33) mA (33 to 330) mA 330 mA to 1.1 A (1.1 to 3) A (3 to 11) A (11 to 20) A
Pleasanton, CA, US
Parameter/Range Frequency CMC2, 4 (±) Comments AC Voltage – Measure3 (0.1 to 10) mV (10 to 100) mV 100 mV to 1 V (1 to 10) V (10 to 100) V (
Naperville, IL, US
Parameter/Range Frequency CMC2, 4, 9 (±) Comments AC Current – Clamp on Meter (10 to 25) A (25 to 150) A (150 to 1000) A (45 to 60) Hz (64 to 440) Hz (45 to 60) Hz (64 to 440) Hz (45 to 60) Hz (64 to
Hartland, WI, US
VI. Time & Frequency Parameter/Equipment Range CMC2, 4, 6 (±) Comments Frequency – Measure3 (3.0 to 1000) Hz (-0.0053 + 0.31 %) Hz Fluke 8845A Frequency – Measuring Equipment3 (1.0 to 1000) Hz
Wilson , NC, US
Parameter/Range Frequency CMC2, 5 (±) Comments AC Voltage3 – Measure (cont) (0.12 to 3.3) V (3.3 to 33) V (33 to 330) V (330 to 500) V (500 to 750) V (1 to 45) Hz 45 Hz to 10
Winter Park, FL, US
III. Mechanical Parameter/Equipment Range CMC2, 6 (±) Comments Pressure Gauges & Transducers (0 to 400) psi (400 to 4000) psi (2000 to 15 000) psi 0.005 % + 0.14 psi 0.0022 % + 0.65 psi 0.11 % + 2.1 psi Menso
Portland, OR, US
Parameter/Equipment Range CMC2, 4, 5 (±) Comments DC Current – Measure & Generate 3 (1 to 100) mA 100 mA to 100 A 3.9 µA/A 57 µA/A Fluke 8508A & standard resistors Resistance – Measure & Generate 3
Leon, Guanajuato C.P. 37297, MX
Parameter/Equipment Range CMC2, 4, 7 (±) Comments Capacitance3 – Generate (0.33 to 0.49) nF (0.50 to 1.09) nF (1.10 to 3.29) nF (3.30 to 10.9) nF (11.0 to 32.9) nF (33 to 109.9) μF (110 to 329.9) μF (0.33 to 1.09)
Des Moines, IA, US
Parameter/Equipment Range CMC2, 4 (±) Comments DC Current3 – Generate (0 to 3.3) mA (3.3 to 33) mA (33 to 330) mA 330 mA to 2.2 A (2.2 to 11) A 0.016 % + 0.05 µA 0.013 % + 0.25 µA 0.013 % + 3.3 µA 0.037
Arlington, TX, US
III. Mechanical Parameter/Equipment Range CMC2 (±) Comments Pressure (Gauges, Transducers, Air Data Test Sets, Pitot Testers) (0.5 to 32) in·Hg (32 to 68) in·Hg Up to 400 psi (400 to 4000) psi (-14 to 3000) psi
Singapore, SG
III. Time & Frequency Parameter/Equipment Range CMC2, 4, 6 (±) Comments Frequency3 – Measure 10 Hz to 100 kHz 1 Hz to 1 GHz >1GHz to 8GHz 0.1 % 1.2 % 1.2 % DMM Oscilloscope Frequency counter Sp
Salt Lake City, UT, US
Parameter/Range Frequency CMC2, 6 (±) Comments AC Voltage – Generate (cont) (33 to 330) V (330 to 1020) V 45 Hz to 1 kHz (1 to 10) kHz (10 to 20) kHz (20 to 50) kHz (50 to 100) kHz 45 Hz to 1
Peoria, IL, US
II. Electrical – DC/Low Frequency Parameter/Range Frequency CMC2, 3 (±) Comments AC Voltage – Generate (2.2 to 22) mV (22 to 220) mV (0.220 to 2.2) V (2.2 to 22) V
Frederick, MD, US
Parameter/Equipment Range CMC2, 4 (±) Comments Circuit Breaker Tester3 Time – Measure (0 to 1) s (1 to 10) s 3.1 ms 3.1 ms Circuit breaker tester analyzer BTSA-3 BTS Circuit Breaker
Cedar Park, TX, US
ISO/IEC 17025:2017 & ANSI/NCSL Z540-1-1994 ETS LINDGREN INC. 1301 Arrow Point Drive Cedar Park, TX 78613 Ron Bethel Phone: 512 531 6400 CALIBRATION Valid To: December 31, 2026 Certificate Number: 1207.01
Troy, NY, US
Parameter/Range Frequency CMC2, 5, 8, 12 (±) Comments AC Voltage3 – Measure (0 to 200) mV 200 mV to 2 V (2 to 20) V (20 to 200) V (200 to 1050) V (1 to 10) kV (10 to 100) kV (50 to 1
Monterrey, N. L. CP, MX
Parameter/Range Frequency CMC2, 5, 7 (±) Comments AC Current – Generate3 (29.00 to 329.99) µA (0.33 to 3.299 99) mA (3.3 to 32.9999) mA (33 to 329.999) mA (0.33 to 1.099 99) A (1.1 to 2.999 99) A (3 to 10.9999) A (1
Cordova, TN, US
Parameter/Range Frequency CMC2, 3 (±) Comments AC Voltage – Generate (cont) (3.3 to 33) V (33 to 330) V (330 to 1020) V (10 to 45) Hz 45 Hz to 10 kHz (10 to 20) kHz (20 to 50
Tokyo, JP
Parameter/Range Frequency CMC2, 3 (±) Comments AC Flatness – Measure (1 kHz Reference) (100 to 115) mV (1.00 to 1.15) V (10 to 40) Hz 40 Hz to 1 kHz (1 to 20) kHz (20 to 50) kH
Clearwater, FL, US
V. Thermodynamics Parameter/Equipment Range CMC2, 5, 6 (±) Comments Temperature – Measuring Equipment 32 °F (33 to 67) °F (68 to 140) °F (32 to 140) °F 0.42 °F 0.44 °F 0.46 °F 0.43 °F Temp/Hu
Indianapolis, IN, US
Parameter/Equipment Range CMC2, 6 (±) Comments DC Voltage – Generate (0 to 329.9999) mV (0.329 to 3.299 999) V (3.29 to 32.999 99) V (32.9 to 329.9999) V (329 to 1020.000) V 0.0023 % + 2.0 µV 0.0013 % +
Juárez Chihuahua, MX
Parameter/Range Frequency CMC2, 5 (±) Comments AC Voltage3 – Generate (1 to 33) mV (33 to 330) mV 330 mV to 3.3 V (3.3 to 33) V (33 to 330) V (330 to 1000) V (10
Pittsburgh, PA, US
II. Thermodynamics Parameter/Equipment Range CMC2, 5 (±) Comments Temperature – Measure (18 to 30) °C (0 to 200) °C 0.020 °C 0.20 °C Measurement with Fluke 1504 thermometer Me
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