PS-1000 and PS-7000 Submersible Pressure Sensors
The PS-1000 submersible pressure sensor accurately measures water depth levels. The robust 47Ø acetal body can withstand harsh environments making it ideal for continuous long-term deployments. Also available is the PS-7000 stainless steel submergible pressure sensor.
- Supply
- 8 to 30 V DC (at sensor) loop powered
- Measurement technique
- ½” ceramic capacitance transducer
- Overall accuracy
- ±0.1% full scale (combined linearity, hysteresis and repeatability)
Overview
In detail
How it measures
Greenspan’s PS-1000 pressure sensors utilise capacitive ceramic pressure-sensitive diaphragms for depth measurement. The changes in depth will vary the pressures acting on the diaphragm and capacitive element. This in turn causes variation in the electronic circuits recording the water depth. PS-1000 depth sensors are ideal for monitoring groundwater, streams/rivers, and lakes/reservoirs. Their accuracy and reliability make them well suited to studying hydrological run-off, stratification, and industrial processes.
Serial or analogue output?
The PS-1000 series can have either an analogue output (PS-1000A) or an integrated logger with serial output (PS-1000L). PS-1000 & PS-7000 analogue sensors have a 4-20mA output (V output is possible upon request). PS-1000L logging sensors have either RS-232, RS-485, or SDI-12 when the SDI-12 adaptor is connected. Optional internal battery pack is available for logging sensor.
Absolute or gauge?
Greenspan submersible pressure sensors are available in either absolute pressure or gauge pressure. Gauge Sensors are vented to the atmosphere so that the effects of changes in barometric or atmospheric pressure do not affect water level readings. Sensors that are not vented to the atmosphere are referred to as Absolute Sensors.
PS-7000 stainless steel pressure sensor
On rare occasions, a PS-1000’s acetal body is not suitable. In such conditions, we can provide the PS-7000. The PS-7000 is a stainless steel submersible pressure sensor while still offering the same superb accuracy as the PS-1000 series.
Specifications
Technical specifications
- Measurement technique
- ½” ceramic capacitance transducer
- Standard ranges
- 2.5, 5, 10, 20, 40, 75, 100 m; absolute ranges 20, 40, 75, 100 m
- Overall accuracy
- ±0.1% full scale (combined linearity, hysteresis and repeatability)
- Sensor outputs
- 4-20mA, RS-232, RS485 Modbus, SDI-12 (adaptor required)
- Long term stability
- 0.2% full scale per annum
- Cable
- Polyurethane sheathed, OD 8 mm, with 3m vent tube, Aramid reinforced; standard lengths 10, 30, 50, 80, 100, 150, 200 m
- Power supply
- 8 to 30 V DC (at sensor) loop powered
- Current consumption
- Up to 20 mA while turned on, 0mA when off
- Operating temperature
- 0–50°C
- Max over pressure
Related
Often specified alongside
Geosystems
Vibrating Wire Piezometer - VWP
- Range
- 0.0352, 0.0702, 0.2, 0.35, 0.5, 0.75, 1, 1.5, 2, 3, 5, 7 MPa
- Accuracy
- ±0.1%
- Linearity
- < ±0.5% F.S.
Geosystems
Standpipe Piezometer CP1, CP15
- Type
- Porous plastic filter (CP1: perforated rigid PVC body; CP15: crush-resistant)
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