At a Glance
- Ranges: 0-0.5mWG up to 0-100mWG
- 25mm Diameter
- Outputs: 4-20mA
- Environmental Protection: IP68 to 100 metres
- Accuracy: <±0.25%/FS
- Optional 0.1% Accuracy Version
- Compact Only 25mm Diameter
- Fully Submersible & Long-Term Immersion Protected to 100m
- Protected Against Power Surges from Lightning Strikes
- High Corrosion Resistant Versions for use in Seawater or Leachate Available
- Ideal for Landfill Sites
Description
The Pi993 submersible level transmitter / hydrostatic level sensor is designed for use in rivers, reservoirs, tanks, boreholes, vessels and channels. Thanks to their long term immersion protection to 100 metres, they are also ideal for the measurement of pressure within submerged pipes and vessels.
For applications where aggressive media such as seawater or leachate are present, especially landfill sites, we can provide a high grade duplex stainless steel submersible level transmitter with very high corrosion resistance.
Electrical connection to the hydrostatic level transmitter is made using a triple-sealed back end assembly and custom manufactured vented polyurethane (PUR) cable. This provides an atmospheric pressure reference and guarantees IP68 integrity to water depths of 100 metres.
The standard submersible level transmitter output is a 2-wire 4-20mA signal which has a surge protection circuit to mitigate the effects of electrical transients caused by nearby lightning strikes and power supply fluctuations. For applications where data loggers are to be used, a ratiometric version is available which offers a 0.5-4.5Vdc output from a 5Vdc supply.
We are able to customise the Pi993 submersible level transmitter to suit your exact requirements if necessary, whilst ensuring a minimal effect on price and availability.
Technical Specifications
| CHARACTERISTICS | Pi9930 | Pi9931 | Pi9933 | UNITS |
|---|---|---|---|---|
| Pressure Ranges: | 0.5, 1, 2.5, 5, 10, 20, 25, 50, 75, 100 | metres Water Gauge (mWG) | ||
| Safe Overpressure: | 150 | % Pressure Range | ||
| Burst Pressure: | 300 | % Pressure Range | ||
| Supply Voltage: | 3 min./10 nom./15 max. | 9 min./32 max. | 13 min./ 32 max. | Volts DC |
| Load Driving Capacity: | N/A | 1000 | N/A | Ohms at Max. Supply Voltage |
| Rated Output: | 0.0-2.0mV/V | 4-20mA | 0-10Vdc | ±1%/rated output |
| Wiring Configuration: | 4-wire | 2-wire | 3-wire | |
| Electrical Connections: | Screened polyurethane (PUR) cable with vent tube, strain and drain wire | |||
| Accuracy: | <0.25 (0.1% optional) | ±%Pressure Range | ||
| Temperature Range Operating: | -10 to +80 | ˚C | ||
| Temperature Range Compensated: | -10 to +80 | ˚C | ||
| Temperature Effect on Output: | <0.015 | ±%/˚C | ||
| Temperature Effect On Zero: | <0.02 (0.01 optional) | ±%/rated output/˚C | ||
| Environmental Protection: | IP68 to 100mWG (10bar) | |||
| Weight: | 250 approx. (excluding cable) | grams | ||
| Construction: | 316L St/Steel (SAF2205 optional), AL2O3 Ceramic (10mWG> only), Viton + PUR | |||
| Electrical Protection: | EMC Immunity: EN50082-1 & Surge (Lightning) Protection: EN61000-4-5 | |||
Product Dimensions
Dimensions in mm
Wiring Details
4-20mA Output (2-wire)| Wire | Designation |
|---|---|
| Red | +ve supply |
| Blue | -ve supply & 4-20mA output in series |
| White | to case |
| Green | cable screen |
| Wire | Designation |
|---|---|
| Red | +ve supply |
| Blue | -ve supply |
| Yellow | +ve signal |
| White | to case |
| Green | cable screen |
| Wire | Designation |
|---|---|
| Red | +ve excitation |
| Blue | -ve excitation |
| White | +ve signal |
| Yellow | -ve signal |
| Green | cable screen |
Case Studies
Why United Utilities Chose Us To Keep The Water Flowing
United Utilities needed a way to monitor the constantly changing water level in their water treatment plant to guarantee a steady flow of water into the reservoir. Learn how they did it using our level transmitters.
