Solinst Model 301 Water Level Temperature Sensor
The Solinst Water Level Temperature Sensor is a compact, all-in-one submersible hydrostatic level transmitter that provides continuous, stable and accurate water level and temperature readings for a wide variety of applications.
The water level pressure sensor and temperature sensor are enclosed in a slim, robust 22 mm x 192 mm (7/8" x 7.55") 316L stainless steel housing. Double o-ring seals prevent leaks and a Faraday cage design protects against power surges and lightning.
Each probe features a removable nose cone for optional use of the 1/4" NPTM threaded connection. 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 gauge (vented) pressure sensor setups.
The Water Level Temperature Sensor works with digital and analog protocols – MODBUS, SDI-12, and 4-20mA (add-on Current Loop Adaptor). They are easy to integrate into your existing SCADA or PLC systems
Communication cable assemblies are available in lengths up to 300 metres. The cables are easily and securely attached to the sensor using a threaded connection.
Simple PC software utilities are used to set up the sensor for the different protocols, perform simple diagnostics, and update sensor firmware if required. A USB-A programming cable is provided for connection to the PC.
Features:
Absolute or vented pressure sensor for highly accurate water level measurements: 0.05% FS
Single probe can be programmed for use with MODBUS, SDI-12, or 4-20mA protocols
Built-in hydrophobic filters and no desiccants to replace (vented version)
Easy to integrate into existing monitoring systems
Simple software utilities for setup, diagnostics and firmware upgrades
Compact, narrow diameter housing for discreet installations
Robust sensor housing design features double o-ring seals for advanced leakage protection
Strong cables for reliable deployment to 300 m
1/4" NPTM threading for connection to pipes and conduits
Applications:
Groundwater, wells
Rivers, canals, lakes, reservoirs, seawater, etc.
Drinking water
Wastewater
Industrial and marine tanks and vessels
Stormwater structures
Landfill and other contaminated outflows
| Level Sensor: | Piezoresistive Silicon with Hastelloy® sensor (Absolute or Gauge) |
| Ranges (Meters): | Absolute: M5, M10, M20, M30, M100, M200; Gauge: M5, M10, M20 |
| Accuracy: | ± 0.05% FS |
| Resolution: | 0.0006% FS (0.01% FS for 4-20mA) |
| 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 (0.01°C for 4-20mA) |
| Response Time: | 1~2 minutes |
| Communication: | Digital communications – Modbus and SDI-12 Analog output – 4-20mA (add-on Adaptor) |
| Interface Connector: | 4-Conductor |
| Power Consumption: | Inrush current at start up <50mA, max 2mA in idle, 10mA while reading sensor |
| Voltage: | 9–36V |
| 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) |