Redox potential ORP converter
There are 2-wire (DC 24V power supply) and 4-wire (AC-free power supply) types, and they transmit an output of DC 4-20mA!
The "HDM-137A type (2-wire) / 138A type (4-wire)" is a field-mounted ORP meter converter (transmitter) with a simple function and easy operation, housed in a compact and robust aluminum case. In the measurement range of -2000 to 2000 mV, the transmission output of DC 4 to 20 mA can be set arbitrarily with a width of 400 mV or more. With the ORP standard solution check, the quality of the electrode characteristics is automatically judged. It indicates "GOOD," "LOW," or "HIGH" relative to the reference potential, along with displaying the potential difference. 【Features】 ■ Change of ORP transmission output range ■ Automatic judgment of electrode characteristics ■ Temperature measurement display ■ ORP measurement value shift ■ Easy operation with a waterproof switch on the bottom *For more details, please download the PDF or feel free to contact us.
basic information
【Other Features】 ■ Change of response speed ■ Automatic return to measurement mode *For more details, please download the PDF or feel free to contact us.
Price range
Delivery Time
Model number/Brand name
Toa DKK HDM-137A model (2-wire type) / 138A model (4-wire type)
Applications/Examples of results
For more details, please download the PDF or feel free to contact us.
