THE successful dTRANS transmitter/controller range from Practical Control Solutions for the measurement and control of pH, redox potential (ORP), conductivity and high purity water has been revised to include many useful new features.
The functionality of these instruments has been expanded with new software and hardware features added.
A Profibus-DP fieldbus link is available as an option in addition to MODbus RTU. An extra relay is supplied that can be operated as either an alarm or a control output.
A second isolated analog output is available and can be programmed to retransmit the measured variable(s) or as a control output. An integral power supply for two wire transmitters is provided.
An analog controller output function can be used to operate continuously variable valves or for pump speed regulation etc.
A modulating controller function i.e. with open, close and dead position, can be used to operate three way valves or stepper motors.
Special calibration methods such as slope adjustment are available, allowing various 2-wire transmitters to be used, for example ozone or chlorine sensors.
Sensor monitoring, which may be switched off, offers a higher level of safety by detecting sensor faults, e.g. open or short circuit, and signaling via an alarm relay.