TSH22 – Hydrostatic Submersible Level Gauge

The TSH22 is a precision submersible level sensor that provides digital output of water level and temperature via an RS485 interface.

High level measurement accuracy (0.1% of the measurement range)
Excellent long-term stability
Very low temperature dependence due to microprocessor-based signal processing
Measurement ranges from 0..1 m to 0..10 m v.s.
Integrated temperature sensor inside the transducer
Level sensor diameter of 22 mm for installation even in narrow boreholes
Durable stainless steel sensor body
RS485 communication interface—FINET or Modbus RTU communication protocols
Optional connector for easy recalibration of the level sensor
Special semi-permeable filter preventing air moisture from entering the sensor’s compensation capillary

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Description

The TSH22 pressure sensor for measuring water level and temperature features high measurement accuracy (0.1% FSO) and very low temperature dependence of the measured value.
The level sensor is based on a 19 mm sensor with a stainless steel diaphragm. A built-in microprocessor compensates for the sensor’s temperature dependence and any nonlinearity. Water temperature is measured by a separate sensor located within the sensor housing and can be transmitted, along with the level, to a connected host system via the RS485 serial interface.
The level meters come standard with the FINET communication protocol, which allows for quick and easy connection to all FIEDLER AMS data loggers. Upon request, the level meters can also be supplied with a Modbus RTU interface.

Applications

Measuring groundwater levels
Environmental monitoring
Monitoring water levels and temperatures in open waterways
Basic sensor for early warning systems (LVS)
Level measurement in sumps and water tanks
Level monitoring in industrial facilities

Technical specifications

| Technical Specifications | TSH22 - Hydrostatic Submersible Level Sensor | | :---: | --- | --- | | Measurement Channels | K1: level, K2: water temperature | | K1 Measurement Range | selectable from 0..1 to 0..10 m water column (standard: 1, 2, 5, 7, and 10 m w.c.) | | Permissible overload | 1.5x the measurement range | | Level measurement accuracy | ±0.1% (0.35%) FSO | | Level resolution | 1 mm | | Water temperature measurement accuracy | ±0.3 °C | | Water temperature resolution | 0.1 °C | | Long-term stability | ±0.1% FSO | | Temperature Dependence | ±0.2% FSO / 10K | | Output Signal | RS485 | | Communication Protocol | FINET (Modbus RTU) | | Baud rate | FINET: 1,200 Bd to 19,200 Bd; Modbus RTU: 2,400 Bd to 38,400 Bd | | Supply voltage | 6 V to 16 V DC | | Current consumption | < 5 mA | | Operating temperature range | 0 to +50 °C | | Diaphragm and sensor body material | 1.4044 stainless steel | | Diaphragm Protective Cap Material | POM | | Sensor dimensions | 22 mm diameter, 120 mm length | | Weight | 170 g without cable | | Protection rating | IP68 (sensor with cable) | | Protection rating of the connection connector | IP67 | | Connection | four-wire PUR cable with integrated capillary tube | | Connection cable diameter | 8 mm |

Downloads

Price List Cenik 2026 V101 Datasheet H7 0 Datasheet H40 Tsh22 Datasheet Q2 0 Datasheet Stela 3v2 Manual Stela 3 V201t Voda A4

Related products

LMP307, LMP307i - Hydrostatic Level Gauges

The submersible pressure level sensor is used for continuous level measurement. The sensor connects to telemetry stations either via 4–20 mA analog inputs (LMP307) or via an RS485 digital interface (LMP307i). A wide range of variants is available, enabling measurement in both clean water and heavily contaminated liquids. Measurement ranges are available from 0–0.6 m to 0–100 m of water column. When ordering, you must specify the required accuracy of the level meter (from 0.1 to 0.5% of the range), the housing design and diaphragm material, the length and material of the supply cable (PUR, PVC), and, last but not least, the current output type (1–5 mA, 4–20 mA, 0–20 mA, etc.). LMP307i level transmitters with an RS485 digital output are also available for order.

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