The Solinst Water Level Temperature Sensor is a compact, all-in-one submersible hydrostatic level transmitter that provides continuous, accurate water level and temperature readings for a wide variety of applications.
The durable water level pressure sensor provides 0.05% FS accuracy with automatically temperature compensated readings. There are six pressure ranges to choose from (5-200 m), with options for absolute and vented (gauge) pressure sensor setups.
| Water Level Temperature Sensor Specifications | |
|---|---|
| Level Sensor: | Piezoresistive Silicon with Hastelloy® sensor (Absolute or Gauge) |
| Ranges (metres): | Absolute: M5, M10, M20, M30, M100, M200 Gauge: M5, M10, M20 |
| Accuracy: | ± 0.05% FS |
| Resolution: | 0.0006% FS |
| Normalization: | Automatic Temperature Compensation |
| Temp. Comp. Range: | 0°C to 50°C |
| Temperature Sensor: | Platinum Resistance Temperature Detector (RTD) |
| Operating Temperature: | -20°C to 80°C |
| Temp. Sensor Accuracy: | ± 0.05ºC |
| Temp. Sensor Resolution: | 0.003°C |
| Response Time: | 1~2 minutes |
| Communication: | Digital communications – Modbus and SDI-12 |
| Interface Connector: | 4-Conductor |
| Power Consumption: | Max 2mA in idle, 10mA while reading sensor |
| Size: | 22 mm x 192 mm (7/8" x 7.55") |
| Weight: | 173 grams (6.1 ounces) |
| Wetted Materials: | Delrin® , Viton® , 316L stainless steel, Hastelloy, Polyurethane (TPU boot) |
Table 1-1 WLTS Technical Specifications
Note:
The Model number (e.g. M5) refers to the maximum depth of submergence in meters below water, for that device.
1.3.1 Absolute Level
When submerged, absolute pressure sensors measure total pressure – the pressure of air plus water column above their zero point. The actual pressure of just water above the sensor is obtained by subtracting barometric pressure from the total pressure.
1.3.2 Vented (Gauge) Level
When submerged, vented pressure sensors detect both water and barometric pressure. However, a vent tube to surface allows barometric effects on the pressure sensor to be eliminated. Therefore, they provide readings of the actual pressure of just water above the pressure sensor zero point.
1.3.3 Temperature
The WLTS records temperature compensated water levels. A Platinum Resistance Temperature Detector is used to accurately compensate for temperature changes within the range of 0ºC to +50ºC.
