Transmitter for measurement and control

The Eutech Alpha 500 series industrial 2 wire transmitter isolates its input source from its 4-20 mA output to prevent electrical noise and leakage from interfering with the output signal and eliminates crosstalk between multiple transmitters in the same loop to ensure a stable and reliable measurement and control system.

Models are available for pH/ORP and conductivity measurements. Suitable for connecting to a PLC for advanced control systems, the industrial transmitter also connects to a recorder for documentation.

The transmitter galvanically isolates its input source from it 4-20 mA output. With this isolation, electrical noise or leakage from an input source is totally prevented from interfering with the output signal and also eliminates crosstalk between multiple transmitters in the same loop. Simultaneous measurement of the same sample using two or more isolated transmitters can now be carried out without producing an erroneous measurement.

The transmitter also offers user-customisation through set-up menu allowing flexibility in matching the transmitter's functions to suit user requirements. A symmetrical mode operation ensures electrical noise problems when used with solution ground and one point online calibration is possible without the need to shut down the line.

The transmitter can be configured to emit a pre-set output current to indicate out-of-range values when pH, ORP or conductivity values exceed the range of measurement. During calibration sequence and set-up mode, the transmitter switches to hold mode where current output is held at corresponding last measured values. Scaleable 4-20 mA output provides better resolved output at chart recorder and other peripheral device and non-volatile memory retains all stored parameters and calibration data even if power fails.

The IP65 weatherproof housing makes it suitable for indoor and outdoor use. Furthermore, its user-friendly interface features dual LCD for simultaneous view of measured and temperature value. Its DC power operation makes it suitable for use in power plants and commercial sites and it can be installed in serial loop.