Electrical measuring instruments have applications in all kinds of industries, from food and pharma to automotive, manufacturing, and the defence sector. Hence, the calibration of these electrical instruments plays a significant role in ensuring safety and quality in these industries. It is also mandated by regulation for certain industries to have their instruments and devices calibrated at periodic intervals. Calibration ensures that the measurement values given by these devices are true to the value and hence ensure smooth operations. Calibration also guarantees the traceability of the measurements.
Our laboratory is climate-controlled, with the temperature maintained between 25 ± 2 ̊C and the humidity between 45% and 65%. Our electro-technical calibration lab is equipped with state-of-the-art test benches for the lab standards. Master equipment with traceability to national or international standards is available for the calibration of instruments.
The following details the list of instruments, including their respective parameters, our calibration range, and standard specifications.
| S.N. | Source / Measure | Instruments Name | Parameter to be calibrated | Range | Standard Used |
| 1 | Source | Multifunction / Multiproduct Calibrator (Fluke – 5550, 9100, 5080, 5500, 5502, 5520, 5522, 5530) Transmile / Zeal Process Calibrator | 1. AC Voltage 2. AC Current 3. DC Voltage 4. DC Current 5. Frequency 6. Resistance 7. Capacitance 8. Temperature Simulation (RTD & Thermocouple) 9. Scope 10. DC Power 11. AC Power 12. Power Factor / Phase Angle | 1. 10 µV to 1000 V @ 50 Hz to 10 kHz 2. 10 µA to 20 A @50 Hz to 10 kHz, 30 A @ 50 Hz 3. 10 µV to 1000 V 4. 1 µA to 30 A 5. 100 mHz to 1 GHz 6. 1mΩ to 1 GΩ 7. 1 pF to 100 μF @ 1 kHz, 1 μF to 100 μF @ 100 Hz 8. Thermocouple (All Types): -250 ℃ to 2300 ℃ RTD (All Types): -200 ℃ to 800 ℃ 9. Time Marker (Oscilloscope): 10 nsec to 5 sec DC Amplitude (Oscilloscope): 1.25 mV to 100 V AC Amplitude (Oscilloscope): 5 mV to 100 V Bandwidth (Oscilloscope): 50 kHz to 1000 MHz 10. 10 mW to 20 kW 11. 30 mW to 20 kW 12. 0.01 to UPF @ 50 Hz (1 phase – (30V to 480V), (0.01 A to 20 A) | 1. 8.5 DMM (Fluke) 2. 6.5 DMM (Fluke) 3. AC Measurement Standard (Fluke 4. LCR Meter (Keysight) 5. Precision Power Analyzer (Yokogawa) 6. 3 Phase Reference Standard (ZERA) 7. Universal Frequency Counter (Keysight) 8. USB RF Power Sensor (Keysight) |
| 2 | Source | AC/DC Power Supply AC/DC High Current Source | 1. AC Voltage 2. AC Current 3. DC Voltage 4. DC Current | 1. 10 µV to 1000 V @ 50 2. 2. 10 µA to 20 A @50 Hz to 10 kHz, 20 A to 1000 A @ 50 Hz 3. 10 µV to 1000 V 4. 1 µA to 1000 A | 1. 8.5 DMM (Fluke) 2. 6.5 DMM (Fluke) 3. High Current Shunt |
| 3 | Source | High Voltage Source / Oil BDV Tester | AC & DC High Voltage | 1 kV to 100 kV @ 50 Hz 1 kV to 100 kV | Capacitive Voltage Divider |
| 4 | Source | Frequency Generator / Signal Generator | 1. Frequency 2. RF Power 3. Time Period | 1.100 mHz to 6 GHz 2. (100 kHz to 6 GHz): -42 dBm (5 mVpp) to 21 dBm (7.09 Vpp) 3. 1 nsec to 1 sec | 1. Universal Frequency Counter (Keysight) 2. USB RF Power Sensor (Keysight) |
| 5 | Source | Resistance Box / Standard Resitor Capacitance Box / Standard Capacitor Inductance Box / Stanadar Inductor | 1. Resitance (DC) 2. Resistance (@1 kHz) 3. Capacitance (@1 kHz) 3. Capacitance (@100 Hz) 4. Inductance (@1 kHz) | 1. 100 µΩ to 20 GΩ 2. 1 Ω to 100 kΩ 3. 1 pF to 1 mF 4. 1 µF to 1 mF 5. 100 µH to 10 H | 1. 8.5 DMM (Fluke) 2. 6.5 DMM (Fluke) 3. LCR meter 4. MFC (Fluke) |
| 6a | Measure | Precision Multimeter (8.5 / 7.5 / 6.5) Digital Multimeter (up to 5.5 digit) Clamp Meter | 1. AC Voltage 2. AC Current 2b. AC High Current 3. DC Voltage 4. DC Current 5. Frequency 6. Resistance 7. Capacitance 8. Temperature Simulation (RTD ) | 1. 10 µV to 1000 V @ 50 Hz to 10 kHz 2a. 10 µA to 120 A @50 Hz to 10 kHz 2b. 10 µA to 1 kA / 2 kA / 3 kA / 6 kA @ 50 Hz 3. 10 µV to 1000 V 4. 1 µA to 100 A / 2 kA 5. 100 mHz to 10 MHz 6. 1 mΩ to 20 GΩ 7. 1 pF to 100 μF @ 1 kHz 8. RTD (All Types): -200 ℃ to 800 ℃ | 1. MFC Fluke 2. Transconductance Amplifier (Fluke) 3. DC Reference Standard (Fluke) 4. Reference Divider (Fluke) 5. Decade/Standard Resistance Box |
| 6b | Voltmeter / Ampere meter / Frequency meter / Power Factor meter / Phase Angle meter / VFD meter / Multifunction meter | 1. MFC | |||
| 7 | Measure | Milli ohm meter / Megaohm meter / Micro ohm meter / Earth Tester / Insulation Tester / CRM Meter / TWRM meter / | Resistance | 100 µΩ to 500 GΩ (upto 1 kV) | 1. MFC (Fluke) 2. Decade/Standard Resistance Box |
| 8 | Measure | Power Meter / Power Analyzer / Energy Meter (Class: 0.2, 0.5, 1.0) / Reference Energy Logger (Class: 0.02, 0.05 and coarser) | 1. DC Power 2. AC Power/Energy 3. Power Factor: | 1. 1 mW to 20 kW 2. 0.3 mW/mWh to 172.8 kW/kWh 3. 0.01 to UPF | 1. Zera 3 Ph Ref Std (COM 3003 / COM 3000) 2. Zera AC Voltage / Current Source (MT551) |
| 9 | Measure | LCR Meter / Smart Tweezer | 1. Resistance (@1 kHz) 2. Capacitance (@1 kHz) 3. Inductance (@1 kHz) | 1. 1 Ω to 100 kΩ 2. 1 pF to 100 μF 3. 100 µH to 10 H | 1. Keysight LCR meter 2. Decade Resistance Box 3. Standard Capacitance Box 4. Standard Inductance Box |
| 10 | Measure | Temperature Indicator / Controller / Data Logger / Data Acquisition Switch Unit | Temperature Simulation (RTD & Thermocouple) | Thermocouple (All Types): -250 ℃ to 2300 ℃ RTD (All Types): -200 ℃ to 800 ℃ | 1. MFC (Fluke) |
| 11 | Measure | High Voltage Divider / H V Probe | AC & DC High Voltage | 1 kV to 100 kV @ 50 Hz 1 kV to 100 kV | Moonlight & R E – Capacitive Voltage Divider |
| 12 | Measure | Current Transformer / Bridge | Ratio Error & Phase Error | 1A to 3200A (Primary) 1A to 5A (Secondary) Turn Ratio: 1 to 600 Turns | 1. Eltel / Moonlight CT 2. Eltel / AITTS (Bridge) |
| 13 | Measure | Potential Transformer / Bridge | Ratio Error & Phase Error | 1.1 kV to 132 kV (Primary) 110 V to 110 /√3 V (Secondary) Turn Ratio: 1 to 3200 Turns | 1. Moonlight PT 2. Eltel / AITTS (Bridge) |
| 14 | Measure | Tesla Meter/Gauss Meter / AC Magnet / DC Magnet | 1. AC Magnetic Field @ 50 Hz 2. DC Magnetic Field | 1. 0.1 Gauss to 2000 Gauss 2. 100 Gauss to 10000 Gauss | 1. Tesla meter 2. EMF Tester 3. D C Reference Magnet 4. AC Electro Magnet |
| 15 | Measure | Oscilloscope | 1. Time Marker 2. DC Amplitude 3. AC Amplitude (1 kHz to 10 kHz) 4. Bandwidth | 1. 10 nsec to 5 sec 2. 1 mV to 100 V 3. 5 mV to 100 V 4. 50 kHz to 1000 MHz | 1. MFC (Fluke) |
| 16 | Measure | Time Calibrator / Timer / Stopwatch / Hour meter | Time Interval | 100 ms to 27 hours | Time Interval Meter |