Description
Overview
GAOTek volume corrector flow meter is designed on the basis of thermal dispersion, and adopts a method of constant differential temperature to measure gas flow. It has advantages of small size, easy installation, high reliability and high accuracy, etc.
Features
- LCD display shows instant flow rate, totalized flow
- Display also shows temp., current speed ,high brightness backlight
- 16-bit microcomputer chip for small & maintenance free operation
- Self-checking function for easy maintenance and debugging
- EEPROM technology for permanent parameter storage
- Measures mass flow or standard volume flow of gas
- 40 flow velocity segments and 5 linear corrections for accuracy
- No temperature and pressure compensation required
- Wide range: 0.5 Nm/s to 100 Nm/s; suitable for gas leak detection
- Vibration-resistant with long service life
- Easy installation and possible hot-tapped maintenance
- Digital design for accuracy and stability
- Outputs frequency pulse, 4 mA to 20 mA signals & RS 485 interface
- Multiple physical parameters alarm output options
Technical Specification
| Power supply | 24 V DC or 85 V to 220 V AC |
| Input signal | platinum resistor (Pt 20 and Pt 1000, Pt 20 and Pt 300) |
| Measuring Medium | Various gas (Except the acetylene) |
| Accuracy | ±1% F.S, ±1% to 2.5% |
| Response cycle | 1 sec |
| output | RS 485 interfaces, Hart protocol, Pulse ,4 mA to 20 mA, Alarm of upper, lower limit |
| Using environment | -22 °F to 158 °F (-30 °C to 70 °C) (with LCD) |
| Pulse output mode | 0 HZ to 5000 HZ output |
| Custom function | design according to different shell size and parameter requirements |
| correlation | 4 mA to 20 mA standard current signal (photoelectric isolation, HART communication) |
| Control alarm signal output | 1 to 2 line Relay, Normally Open state, 10 A / 220 V / AC or 5 A / 30 V / DC |