Bestech Australia has recently released a new Series 35X HTC high temperature pressure transmitter from Keller that is primarily designed for biotechnology and food industry applications.
Due to the maximum operating temperature of this new high temperature pressure transmitter is 120°C, the pressure of hot medium applied to the diaphragm is transferred via an exposed oil filled spiral capillary to the sensing element. Heat to a maximum of 300°C is therefore safely dissipated to atmosphere before it reaches the sensing element.
The 35X HTC high temperature pressure transmitter is based on the existing Series 30 digitally compensated pressure transmitter range. This instrument is available in ranges from -1 to 3Bar to 0 to 1000Bar.
While the linearity (BSl) is 0.05%FS, the combined error is 0.5%FS for the entire operating temperature band from 20 to 300°C. The frequency response is 100Hz. Both analogue and digital output signals are standard, including RS485, 0 – 10 V and 4 -20 mA. It is possible to use both digital and analogue signals concurrently. Supply voltage is 8 to 28Vdc for the RS485 and 4 -20mA outputs. The 0 -10V signal requires 12 to 30Vdc input.
Several choices of interface cables are available within the Keller product range to communicate between the 35X HTC high temperature pressure transmitter and a PC. PROG30 PC compatible software is available to set up and calibrate the Series 35X HTC, to rescale it from 100% down to 30% FS, to adjust the zero, change the measurement unit, and to enable several other functions.
READ30 data acquisition software is also available to facilitate various graphical presentations, as well as to monitor up to 16 transmitters on the one serial connection (Bus-operation).