Sigma Test and Research Centre : Laboratory Testing,Quality Control,Testing Services
    • Electrical Calibration Services

Electro Technical Calibration laboratory is one of the significant Laboratories helping the industries by providing calibration services for almost all, electrical, electronic, test measuring instruments like DMMS, Panel metres, Oscilloscope, Breakdown Tester, LCR metres, Power and Energy meters, Micro Ohm meters, Function generators, Signal generators, Timers etc.

We use state of the art equipment to ensure highest degree of measurement confidence. The Electro Technical Calibration standards maintained by STRC are regularly upgraded and are traceable to the national and international standards through the high precision calibration laboratories.

Standards and Instruments Used:

Fluke Multifunction Calibrator 9100 as a source, Fluke 6½ Digit Digital Multimeter, Fluke High Voltage Calibration System and Power Analyzer as a measuring instrument.

Source Parameters:

DC Current, AC Current, DC Voltage, AC Voltage, Resistance, Capacitance, Frequency, Power Factor, Power at various power factors, Energy at various power factors, Temperature, Time Interval.

Instruments Which Can Be Calibrated:

Multimeter up to 51/2 digit , Process calibrator, Clamp meter, LCR Meter, AC/DC Voltmeter, AC/DC Ammeter, Frequency Meter, Ohms Meter, Power Factor Meter, I.R Tester, Temperature Controller /indicator / Recorder/ Process Meter/Temperature Data Logger, Timer/Stop Watch etc.

Measurement Parameters:

AC / DC Voltage, AC / DC High Voltages, DC Current, AC Current (AT 10 HZ TO 10 KHZ Frequency), Resistance, Capacitance, Temperature Controller /indicator / Recorder/ Process Meter/Temperature Data Logger, Time Interval, Frequency.

Instruments for Calibration:

AC/DC High Voltage Tester, AC/DC Power Supply, Reference Ballast, Standard Resistance/ Capacitance Box, Wheatstone Bridge/Kelvin Bridge, CT Etc

S.No. Measured Qty. / Instrument Range/Frequency *Calibration Measurement Capability (± %) Remarks
AT LABORATORY SOURCE
1. DC VOLTAGE 1 mV to 300 mV
300 mV to 300 V
300 V to 1000 V
0.5 to 0.013
0.013 to 0.02
0.02 to 0.013
Using Fluke 9100 by Direct Method
2. DC CURRENT 1 µA to 300 mA
300 mA to 10 A
10 A to 1000 A
1.5 to 0.16
0.16 to 0.10
0.10 to 0.9
Using Fluke 9100 by Direct Method
Using CC 50 Turn
3. AC VOLTAGE 50 Hz/ 1 kHz
10 mV to 30 mV
30 mV to 300 V
300 V to 1000 V
1.16 to 0.42
0.42 to 0.07
0.07 to 0.08
Using Fluke 9100 by Direct Method
4. AC CURRENT 50 Hz/ 1 kHz
100 µA to 300 µA
300 µA to 300 mA
300 mA to 10 A
10 A to 850 A
0.43 to 0.20
0.20 to 0.11
0.11 to 0.08
0.08 to 1.1
Using Fluke 9100 by Direct Method
5. FREQUENCY 10 Hz to 1 kHz 0.006 Using Fluke 9100 by Direct Method
6. RESISTANCE
(2 WIRE)
1 Ω to 1 MΩ
1 MΩ to 40 MΩ
40 MΩ to 100 MΩ
1.4 to 0.06
0.06 to 0.20
0.20 to 0.35
Using Fluke 9100 by Direct Method
AT LABORATORY MEASURE
7. DC VOLTAGE 1 mV to 100 mV
100 mV to 10 V
10 V to 1000 V
0.4 to 0.01 0.01 to 0.005
0.005 to 0.007
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
8. DC CURRENT 10 µA to 10A 0.4 to 0.17 Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
9. AC VOLTAGE 50 Hz
10 mV to 100 mV
100 mV to 10 V
10 V to 1000 V
0.6 to 0.05
0.05 to 0.14
0.14 0.2
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
10. AC CURRENT 50 Hz
100 μA to 400 mA
400 mA to 10 A
1.5 to 0.35
0.35 to 0.3
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
11. FREQUENCY 45 Hz to 100 Hz
100 Hz to 1000 Hz
0.02 to 0.01
0.01 to 0.006
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
12. RESISTANCE
(2 WIRE)
1 Ω to 10 MΩ
10 MΩ to 100 MΩ
0.36 to 0.05
0.05 to 0.95
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
13. INDUCTANCE 1 kHz
1 mH to 100 mH
2.2 Using LCR Meter By Direct Method
14. CAPACITANCE 1 kHz
1 nF to 10μF
2.5 Using LCR Meter By Direct Method
15. AC RESISTANCE 1 kHz
1 Ω to 1M Ω
1.5 Using LCR Meter By Direct Method
16. TIMER/HOUR METER 20 to 9000 sec 1.4 to 8.0 sec Using digital time interval meter/Comparison method
AT SITE MEASURE
17. DC VOLTAGE 1 mV to 100 V
100 V to 1000 V
0.5 to 0.01
0.01 to 0.014
Using 61/2 DMM 8845 A Fluke by Comp. / Direct Method
18. DC CURRENT 100 µA to 400 mA
400 mA to 10 A
0.9 to 0.12
0.12 5 to 0.2
Using 61/2 DMM 8845 A Fluke by Comp. / Direct Method
19. AC VOLTAGE 50 Hz
10 mV to 300 V
300 V to 750 V
0.18 to 0.23
0.23 to 0.15
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
20. AC CURRENT 50 Hz
10 mA to 300 mA
10 mA to 10 A
0.25 to 0.4
0.4 to 0.5
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
21. FREQUENCY 45 Hz to 1000 Hz 0.02 Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
22. RESISTANCE
(2 WIRE)
1 Ω to 10 Ω
10 Ω to 10 MΩ
10 MΩ to 100 MΩ
0.5 to 0.08
0.08 to 0.05
0.05 to 0.95
Using 61/2 DMM 8846 A Fluke by Comp. / Direct Method
23. TIMER/HOUUR METER 20 to 9000 sec 1.4 to 8.0 sec Using digital time interval meter/Comparison method
AT SITE SOURCE
24. DC VOLTAGE 100 mV to 100 V
100 V to 1000 V
0.06 to 0.08
0.08 to 0.12
Using MF Calibrator Fluke/ 5080A by Direct Method
25. DC CURRENT 100 µA to 300 mA
300 mA to 10 A
0.6 to 0.9
0.9 to 0.3
Using MF Calibrator Fluke/5080A with 50 Turn Current Coils by Direct method
26. AC VOLTAGE 50 Hz
100 mV to 300 mV
300 mV to 1000 V
0.93 to 35
0.35 to 0.18
Using MF Calibrator Fluke/ 5080A by Direct Method
27. AC CURRENT 50 Hz
300 µA to 10A
0.6 to 0.4 Using MF Calibrator
Fluke / 5080A with 50 Turn
Current Coils by Direct method
28. FREQUENCY 45 Hz to 1000 Hz 0.02 to 0.06 Using MF Calibrator Fluke/ 5080A By Direct Method
29. RESISTANCE
(2 WIRE)
1 Ω to 10 Ω
10 Ω to 10 MΩ
10 MΩ to 100 MΩ
4.2 to 0.7
0.7 to 0.1
0.12 to 0.6
Using MF Calibrator Fluke/ 5080A by Direct Method
30. TEMPERATURE SIMULATION
(Temperature Controller /indicator / Recorder/ Process Meter/Temperature Data Logger)
  RTD Type Using Fluke 9100 -200 to 800 °C 0.2 to 0.5 Using
  “J” Type T/C Calibrator -200 to 760 °C 0.3 MF
  “K” Type T/C -200 to 1300°C 0.4  
  “T” Type T/C -200 to 400 °C 0.3  
  “N” Type T/C -200 to 1300 °C 0.4  
  “S” Type T/C -0 to 1300 °C 0.9  
  “R” Type T/C 0 to 1700 °C 0.9  
31. AT SITE: TEMPERATURE SIMULATION
(Temperature Controller /indicator / Recorder/ Process Meter/Temperature Data Logger)
  RTD Type -200 to 800 °C 0.4 Using Fluke 725
  “J” Type T/C Calibrator -200 to 760 °C 1.2 MF
  “K” Type T/C -200 to 1300°C 1.3  
  “T” Type T/C -200 to 400 °C 1.2  
  “N” Type T/C -200 to 1300 °C 1.4  
  “S” Type T/C -0 to 1300 °C 1.9  
  “R” Type T/C 0 to 1700 °C 1.9