Bronkhorst®
Instruction Manual Controlled Evaporator and Mixer 9.17.126A18
3.7 Digital parameters
Using an E-8000 CEM control module, the heating element of the CEM can be operated digitally via RS232 or fieldbus. This
section describes the parameters that are used to monitor and control the heating element.
Consult the E-8000 manual for installation information and a description of the user interface.
This parameter indicates the temperature measured by the CEM. The value range corresponds to 0…200 °C (the supported
temperature range of the CEM control module).
This parameter sets the required temperature of the heater. Like Measure, its value range corresponds to 0…200 °C. Note that
the heater has no cooling functionality; a setpoint evaluating to a lower temperature than the actual heater temperature
effectively switches the heater off.
0xA100…0xA101/ 41217…41218
Fmeasure returns the measured temperature in °C.
0xA119…0xA11A/ 41241…41242
Fsetpoint sets the required temperature of the heater in °C. Note that the heater has no cooling functionality; a setpoint
lower than the actual heater temperature effectively switches the heater off.
0x8168…0x8169/33129…33130
This parameter returns the maximum readout and control value (100%), expressed in units corresponding to parameter
Capacity Unit. For the CEM control module, this parameter is fixed to 200 (°C); it might come in handy when scaling the value
of parameter Measure (1 °C = 32000/200).
0x81F8…0x81FB/33273…33276
This parameter returns the capacity unit in which Fmeasure and Fsetpoint are expressed. For the CEM control module, this
parameter is fixed to °C.
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