High Temperature Compensated Pressure Sensor

Pressure sensor for applications in bio-reactors or autoclaves. The transmitter is compensated up to 150 °C and may be operated continuously or sterilised at this level, including the conditioning electronics up to 120°C.

120°C calibrated pressure transmitter for measuring 0 to 10 bar

I am measuring the pressure of a gas up to 10 bar where the temperature of the gas is at 120 degrees centigrade and I have found that transmitters errors are not normally compensated for that temperature. Could you offer a transmitter which is calibrated at 120 degrees centigrade?

We would suggest the 35X HTT which is calibrated up to 120°C so you know what errors to expect up to that temperature.  The total error band from 20 to 120°C is 0.2%FS for 4-20mA output, and 0.15%FS for the RS485 output.

• SKU ID: s1-35xhtt-0001

• 35X Type: HTT – 150 degC max. media temperature

• Pressure Range: 10 bar vented gauge

• Analogue Output Signal: 4-20mA (2 wire)

• Digital Interface: RS485 ready only

• Electrical Connection: 5 pin Binder connector

• Process Connection: G1/2 male flush (1/2 inch BSP)

• Media Exposed Materials: Stainless steel 316L and Viton seals

• Oil Filling: Silicone oil (standard)

• Compensated Temperature Range: 20 to 120 degC

Accuracy of 2 bar range

Is there a 2 bar absolute option for the 35X HTT High Temperature Digital Pressure Sensor, and is the 0.15%FS option the most accurate that can be offered?

1 or 3 bar are the standard max. pressure ranges, the analog output can be scaled to 0 to 2 bar, but accuracy is still based on 3 bar range, so the best accuracy possible would be 4.5 mbar for the digital output and 6 mbar for both the 4-20mA & 0-10Vdc analogue output.

Wiring for analogue & digital signal

For the sensor version with electrical connection of 3 metres of shielded cable sealed to IP65, we will connect to our DAQ using the 4-20mA signal. If we want to use the RS485 digital output, is it still the same two wire connection, or do we need a different electrical connection?

Please see the table below which shows the wiring connections for the shielded cable, the analogue & digital signal connections are on different wires.