Water Level Temperature Sensor Specifications

solinst water level temperature sensor illustration showing communications cable connected to water level temperature sensor

MODBUS Wiring Overview
(SDI-12 in Brackets)

Level Sensor: Piezoresistive Silicon with Hastelloy® sensor (Absolute or Gauge)
Ranges: 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: 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)


solinst water level temperature sensor absolute and vented communications cables


Communication Cable Specifications

Wetted Materials: Polyurethane, Nickel plated Brass, Viton
Diameter: Cable: 8 mm (0.32") Connector: 20 mm (0.79")
Lengths: Up to 300 m (vented and non-vented)
Max. Bend Radius: 25 mm (1")
Operating Temperature: -20ºC to 80ºC
Vent Tube Moisture Protection: Built-in hydrophobic filters at sensor connection and plug at surface

usb a programming cable required for programming 301 water level temperature sensors for use with sdi-12 or modbus applications

USB-A Programming Cable
(Required for programming 301 Water Level Temperature Sensors for
Use with SDI-12 or Modbus Applications)


Water Level Temperature Sensor Cap

solinst 301 water level temperature sensor cap is removable absolute and vented versions for use in applications where a one quarter inch nptm threaded connection is required

Solinst 301 Water Level Temperature Sensor Cap is Removable
(Absolute and Vented Versions),
for Use in Applications Where a 1/4" NPTM Threaded Connection is Required