High Accuracy Mechanical Flow Meter for Sea Water with 4-20mA Signal Output
The standard variable area flowmeter is composed of a measuring tube and a on-site indicator. On-site indicator can be optional to install an additional electric component, which is suitable to measure liquid and gas.
This variable area flowmeter adopts the variable-area measuring principle and the measuring component is composed of a conical measuring tube and a floater. The floater can move up and down freely in the conical measuring tube, to change the flow area in the tube. The vertical position of the floater in the conical measuring tube will change with the change of flow, the floater position will be transmitted to the indicator dial via magnetic transmission system, and it can indicate the flow value on site, and also output signal to realize remote display and control.
This variable area flowmeter can be widely used in the flow measuring process of complicated and severe environmental conditions such as petroleum, chemical engineering, power generation, pharmaceuticals, food and water treatment industries, as well as various medium conditions.
Specifications
| Measuring range |
Water (20ºC)   6~150000L/h Air (101.3kPa 20ºC) 0.05~4000m3/h |
| Measuring range ratio | 10:1 (20:1 for special type) |
| Accuracy |
1.5 grade 1.0 grade |
| Working Pressure |
DN15~DN50Â Â PN4.0MPa (25MPa for special type) DN80~DN100Â Â Â Â PN1.6MPa (16MPa for special type) |
| Jacket pressure rating | 1.6MPa |
| Media Temperature |
Sandard Type: -80ºC~+220ºC Hgh temperature type: 400ºC Lning PTFE type: ≤85ºC |
| Ambient Temperature |
Pinter type: -40ºC~+120ºC Eectric remote transmission type: -30~+65ºC, |
| Media Viscosity |
DN15: ≤5mPa.s (H15.1~H15.3): ≤30mPa.s (H15.4~H15.9) DN25: ≤250mPa.s DN50~DN150: ≤300mPa.s |
| Liquid crystal display (LCD) |
Idication range for instantaneous flow rate: 0~50000. Idication range for accumulative flow rate: 0~99999999. |
| Output |
Sandard signal: two-wire 4~20mA Pulse signal: minimum interval is 50ms  |
| Alarm output |
Instantaneous flow rate alarm for upper limit or lower limit.   Sandard type: open-collector output (MAX100mA, 30VDC Inner impedance 100Ω. Secial type: relay output (The maximum contact capacity is 5A AC250V) |
| Power supply |
Sandard type: DC24V (DC10.8V~DC36V)Â AC type: AC220V (AC85V~AC265V) |
| Connection type | Sandard type: DIN2501 flange    |
| Electrical Interface | M20×1.5, PG11,1/2″NPT15 |
| Protection Grade |
IP6516, explosion-proof sign: Intrinsic safety type: ExiaIICT3~6Â Â Â Â |
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