Our Products
Our offered Product range includes Gas Meter Calibration Test Bench, Pressure Calibrator, Dry Block Calibrator, Signal Calibrator and Temperature Calibrator.
The Calibration Standard of the Test Bench is Bell Prover, which is considered a Primary (Calibration) Standard to Test & Calibrate Domestic Gas Meters (& Gas Meters used in Hotels/Restaurants etc.). The device is ideal for OEMs, Calibration Laboratories & Calibration Service Providers.
The Test Bench, with 2 Sizes of Bell Prover (20L & 100L)will effectively cover Very Low (Qmin typically 0.016 m3/h (0.27 LPM)) to Maximum (Qmax 6 m3/h (100 LPM)) Flow Rates. Available Accuracies : 0.2% & 0.5% F.S.
Upto 4 Gas Meters can be connected (inserted) during a campaign. Facility provided for continuously monitoring Differential Pressures (DP) across each Meter as well as upstream & downstream Line Pressures & Line Temperatures. Line Pressures are regulated typically around 500Pa.
All the testing procedures are controlled by the PC and run automatically, the Test Results can be saved, printed.
Simple/Basic, Manual/Semi-Automatic Test Bench Models are also available. Test Bench frame is made of Industrial Aluminium with perfect outlook and strong structure.
A Boon for Calibration of Domestic Gas Meters OEMs, Hotels, Hospitals & R&D Institutions.
Flow Rates : 0.018 to 6 Cu.M/Hour
Suitable for Gas Meter Sizes : G1.6, G2.5, G4, G6
Bell Prover : Capacity 20/100/200 Litres
Accuracy : 0.2% & 0.5% (Traceable to ISO/IEC 17025 Accredited Laboratory).
Upstream/Downstream Pressure & Temperature Measurement
D.P. Gauges (for measurement of pressure loss) : 0 to 1.0 Inch of Water (0 to 250 Pa)
Meter Clamping : Pneumatic
Simultaneous Calibration of multiple Meters (Provision to mount 2/4/6/8 Meters)
Consult us for higher capacity Bell Provers for Calibration of Industrial / Bulk Meters.
Ranges : -0.85 to 2 / 10 / 20 / 35 / 40 / 60 bar
Accuracy : 0.1% F.S.
2 Line Alpha Numeric Display
Touch Membrane Keypad
Selectable Engineering Pressure Units
DC Current Measurement : 0 to 25 mA (Active)
Switch Test capability & Zero Offset facility
Audio & Visual Alarms for Over Pressure
Pressure Transducer all Media compatible with SS316
9V Battery operated with Low Battery indication
Digital Pressure Indicator with matching Pneumatic Hand Pump with Vernier
| Ranges | Pressure Switch Test |
| -0.85 to 2 / 10 / 20 / 35 / 40 / 60 bar | Maximum 5V DC |
| Accuracy | Over Pressure Alarm |
| ±0.1% F.S. | 105% FS (Audio / Visual) |
| Resolution | Pressure Generation |
| Minimum 4½ digits | Thro’ Matching Pneumatic Hand Pump with Fine Adjustment Vernier & Release Valve |
| Display | Battery Type & Life |
| 2 line, 16 characters LCD (Alpha-Numeric) | 9 Volts; Approx. 12 Hours |
| Engineering Units | Low Battery Indication |
| Mpa, Atm, Bar, Kg/cm2, mH2O, PSI, inHg, ftH2O, Kpa, inH2O, mmHg, cmH2O | Provided |
| mA Input | Instrument Dimension Weight |
| 0 to 25 mA DC (Active) | 420 x 340 x 120 mm (L x B x H) 5 Kg. |
Range : 50 to 600C
Accuracies : 0.1% F.S. +1 digit (ETC 600); 0.15% F.S. +1 digit (ETC 600-2)
Cost Effective Economy Model
Immersion Depth : 110 mm (ETC 600); 190 mm (ETC 600-2)
Calibration at Site, Fast & Reliable
PD Temperature Control
Analog Output
Switch Test facility
Interchangeable Thermowell Inserts, Single / Multihole
| Range | Heating Time (Ambient to max.) | |
| 50°C to 600°C | 18 Minutes (approx.) ETC 600 | |
| 40 Minutes (approx.) ETC 600-2 | ||
| Resolution | Cooling Time (to 100°C) | |
| 1°C | 60 Minutes (approx.) ETC 600 | |
| 100 Minutes (approx.) ETC 600-2 | ||
| Display | Interchangeable Thermowells | |
| Digital Display, 3½ digit LED | Single hole to suit 1/4″ & 1/2″ Probes – StandardOther Sizes / Multihole – optional | |
| Accuracy | Switch Test Facility / Supply | |
| ±0.1% F.S. + 1 digit ETC 600 | Provided / 7 VDC Nominal | |
| ±0.15% F.S. + 1 digit ETC 600-2 | ||
| Stability | Analog Output (F.S.) | |
| ±0.5°C | 10 mV / °C | |
| Temperature Readout | Power Supply / Consumption | |
| °C / °F Switchable | 230V AC / 50 Hz / 1200 Watts | |
| Well Diameter | Instrument Dimensions (L x W x H) | |
| 25 mm | 270 x 124 x 240 mm ETC 600 | |
| 270 x 124 x 306 mm ETC 600-2 | ||
| Immersion Depth | Instrument Weight | |
| 110 mm (ETC 600) 190 mm (ETC 600-2) | 7 Kgs. (ETC 600) 9 Kgs. (ETC 600-2) |
Compact, Light Weight Unit with Holster
Selectable Temperature Output Readings (in C / F)
Measurement & Simulation of
Thermocouple types R, S, B, E, K, J, T & N
Voltage 1 V Simulation, 100 mV Measurement
INPUT FUNCTIONS (Measurement)
| Input | Range | Input range | Resolution | Accuracy | Remarks |
| Voltage (DC) | 100 mV | -10 to 110 mV | 10 mV | ±0.05% measured value
± 30 mV |
Input Resistance 1MW |
| Thermocouple | R | -40 to 1760°C | 1°C | ±0.05% measured value ±3°C (<100°C)
±0.05% measured value ±2°C (>100°C) |
Input Resistance 1MW |
| S | -20 to 1760°C | 1°C | |||
| B | 400 to 1800°C | 1°C | ±0.05% measured value ±3°C (400 to 600°C)
±0.05% measured value ±2°C (>600°C) |
||
| E | -200 to 1000°C | 0.1°C | ±0.05% measured value ±2°C (< -100°C)
±0.05% measured value ±1°C (> -100°C) |
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| K | -200 to 1370°C | 0.1°C | |||
| J | -200 to 1200°C | 0.1°C | |||
| T | -200 to 400°C | 0.1°C | |||
| N | -200 to 1300°C | 0.1°C |
OUTPUT FUNCTIONS (Simulation)
V B Venkateswaran (executive Director) (Nagman Instruments and Electronics)
No 1 Nagman Complex - Block a - Bangalore Nh-4 Chembarambakkam Nazarathpet Via. - 600123 , Chennai, Tamil Nadu, India
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