Nagman Flow provides specialized solutions for the precise checking and calibration of domestic gas meters. Over time, household gas meters can lose accuracy due to wear, leading to incorrect billing or safety concerns. Our services and high-end testing systems ensure that every meter performs to its original specifications. Whether for utility providers or manufacturers, we provide the accuracy needed to maintain fair billing and strict safety standards.
The calibration bench supports the following tests commonly required for meter validation:
Single Jet Water Meters
Multi Jet Water Meters
Electromagnetic Water Meters
Ultrasonic Water Meters
Automatic operation with Gravimetric principle
Suitable for DN 15 – DN 50 water meters
Complies with BIS 779 & ISO 4064
Capable of 9+ different tests
| Meter Sizes | DN 15 / DN 20 / DN 25 / DN 50 |
| Flow Range | Minimum 30 LPH to Maximum 7000 LPH (0.03 to 7 m³/hr) |
| System Operation | Automatic |
| Method of Calibration | Gravimetric |
| Number of Test Line | Single |
| Calibration Media | Water |
| Number of meters can be Calibrated at a time | 5 Nos. of Water Meters of Size DN 15 (OR) |
| 4 Nos. of Water Meters of Size DN 20 (OR) | |
| 3 Nos. of Water Meters of Size DN 25 | |
| Reference Meters | 1 No. of Each Calibrated & Certified Electromagnetic Flow Meters of Sizes |
| DN 6 – Flow Range: 30 LPH to 1000 LPH (0.03 to 1 m³/hr) Accuracy: ± 0.5% of Reading | |
| DN 25 – Flow Range: 800 LPH to 17000 LPH (0.8 to 17 m³/hr) Accuracy: ± 0.2% of Reading | |
| Meter Clamping | Pneumatic Clamping System |
| Compressed Air | 6 bar through Oil free Compressor for Pneumatic Clamping & Pneumatic operated Valves |
| Flow Control | Through VFD’s Connected to the Pumps & Electrically operated control Valves |
| Water supply – Through Pumps | 10 m³/hr @ 16 Bar, 7.5 Kw / 3Phase/ 50Hz |
| Pressure Measurement | Pressure Transmitter (Inlet / Outlet) Range: 0 to 16 bar |
| Temperature Measurement | RTD with Temperature Transmitter Range: 0 to 100°C (class A) |
| Damping Tank | Capacity 100 liters; MOC: MS Powder Coated inside, epoxy coated |
| Collection Tank & Weighing Scale (IND 360 WITH PROFINET COMMUNICATION) | A 25 Liters Collection Tank mounted on a 30 Kg Weighing Scale (Resolution: 5 g) |
| A 125 Liters Collection Tank mounted on a 30 Kg Weighing Scale (Resolution: 20 g) | |
| Optical Heads / Optical Probes | Suitable Probes or communications cables will be provided for getting the test meter reading in automode. (Pending) – Pulse/RS485 |
Nagman Complex, No. 168/7, Chennai-Bangalore NH-4, Chembarambakkam, Chennai – 600 123. Tamil Nadu, INDIA.
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