Description
Overview
This GAOTek Methane Digital Flow Meter is based on Carmen Vortex Principle, which adopts piezoelectric crystal as testing components. It is a new kind of stress detecting vortex flowmeter. It has the advantages of wide range rate, high accuracy, low pressure loss, good medium generality, pulse signal output proportional to flow, convenient to connect with computers.
Features
- Measurement of steam – saturated steam in power plants and chemical facilities
- Gas flow measurement – natural gas, ammonia, nitrogen, carbon dioxide, methane
- Demineralized and pure water in biotech, semiconductor, and pharmaceutical
- Air flow measurement – dust control and compressed air consumption
- Oil and crude methanol up to 100 centipoises
- HVAC
- Food processing
Technical Specifications
| Installation Type | Flange ,Thread ,Clamp and Insertion type |
| Medium | Liquid,gas,steam |
| Temperature | -4 °F to 662 °F (-20 °C to 350 °C) |
| Pressure | 1.6 MPA ,2.0 MPA 6.3 MPa 10 MPA |
| Output Signal | Pulse output or 4 mA to 20 mA output |
| Display | LCD display |
| Communication Interface | RS485 protocol or HART protocol |
| Communication Protocol | Modbus |
| Power Supply | 24 VDC or battery |
| Pipe Size | 20,32,40,50,65,80,100,125,150,200,250,300,(300 to 1000 Insert type) |
| Nominal Pressure | DN20-DN200 4.0 (>4.0 Supply agreement),DN250 to DN300 1.6 (>1.6 Supply agreement) |
| Body Material | 1Cr18Ni9Ti,(Other materials supply agreement) |
| Allowable Vibration Acceleration | Piezoelectric type: 0.0004 lb (0.2 g) Capacitance type: 0.002 lb to 0.004 lb (1.0 g to 2.0 g) |
| Accuracy | ±1 % R ,± 1.5 % R,±1FS; Insert type:± 2.5 % R, ± 2.5 % FS |
| Range | 1:6 to 1:30 |
| Power Supply | 24V DC;Battery type:3.6 V Battery,220 VAC |
| Output Signal | Square wave pulse ( not including the battery power supply type ): High level or low level5 V,1 V; current: 4 mA to 20 mA |
| Pressure Loss Coefficient | In line with the JB or T9249standard Cd = 2.4 |
| Explosion Proof Marks | Intrinsic safety type: Exd IA CT2-T5 flameproof type: Exd CT2-T5 |
| Protection Grade | The ordinary IP65 diving type IP68 |
| Environmental Conditions | Temperature – 20 % to 55,5 % to 90 % of relative humidity, atmospheric pressure is 86 kPa to 106 kPa |
| Applicable Medium | Gas, liquid, steam |
| Transmission Distance | Three wire system pulse output type: < 300m, two line standard current output type (4 mA to 20 mA ): load resistance less than 750 ohm |
| Temperature | Piezoelectric type: 40 °F to 500 °F (-40 °C to 260 °C), 40 °F to 608 °F (-40 °C to 320 °C) Capacitance type: 40 °F to 572 °F (-40 °C to 300 °C), 40 °F to 752 °F (-40 °C to 400 °C), 40 °F to 842 °F (-40 °C to 450 °C (Supply agreement)) |