Online pH meter converter
In the measurement range of pH 1.00 to 14.00, the transmission output DC 4-20mA can be set arbitrarily with a width of 2 pH or more!
The "HDM-135A type (2-wire) / 136A type (4-wire)" is a compact and robust aluminum-cased pH meter converter (transmitter) designed for easy operation and simple functionality in field installations. It is available in a 2-wire (DC 24V power supply) and a 4-wire (AC-free power supply) version, transmitting an output of DC 4-20mA. For two-point calibration using various pH standard solutions, pressing the calibration switch once initiates the stability determination for the first point, and once stable, it automatically completes the calibration and transitions to the second point. This stability determination feature allows for accurate two-point calibration without individual discrepancies. 【Features】 ■ Changeable pH transmission output range ■ One-touch automatic calibration ■ Automatic determination of pH electrode quality ■ pH measurement value shift ■ Glass electrode crack detection *For more details, please download the PDF or feel free to contact us.
basic information
【Other Features】 ■ Temperature compensation for sample water pH value ■ Change in response speed ■ Easy operation with a waterproof switch on the bottom ■ 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-135A model (2-wire type) / 136A model (4-wire type)
Applications/Examples of results
For more details, please download the PDF or feel free to contact us.
