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) |
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)
Water Level Temperature Sensor Cap
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
