Universal transmitters for temperature, strain gauges and potentiometers – in a 6-mm housing with infrared interface and SIL approval.
The PolyTrans P 32000 universal transmitters provide connection possibilities for all standard thermocouples, resistance thermometers, strain gauges, full bridges, resistors and potentiometers/resistive sensors. They can be flexibly adapted to the respective measuring task using DIP and rotary encoder switches or via an IrDA interface.
3-port isolation with protective separation up to 300 V AC/DC according to EN 61140 ensures optimum protection of personnel and equipment as well as unaltered transmission of measurement signals.
The PolyTrans P 32000 offer maximum performance in the smallest of spaces. Resistance thermometers can be operated in 2-, 3- or 4-wire configuration. The connection configuration is automatically recognized, adjustment is not required. All commercial thermocouples can be read with internal or external reference junction compensation. To detect mechanical quantities such as force or strain, strain gauges can be connected in full-bridge configuration.
The ability to connect variable resistors and potentiometers creates a wide range of application possibilities, for example in the field of displacement or position detection. Input voltage signals up to +/– 1000 mV are converted into 0/4 to 20 mA or 0 to 10 V standard signals. This enables low-cost implementation of current measurements using shunt resistors, for example.
Knick offers the PolyTrans P 32000 transmitter with SIL approval for applications with high demands on functional safety. The requirements of EN 61508 were implemented through specially developed hardware and software. The implemented fail-safe concept makes use of structural measures at the device level (redundancy of system components) and diagnostic methods for selective fault detection. The product is SIL2 approved (EN 61508) by an authorized body (TÜV Rheinland). SIL3 in redundant implementations.