HRA692 : Hardness Transmitter

Model : HRA692


Water Hardness Transmitter Without Display

HRA692 Water Hardness Transmitter is one easy to use wall mounting transmitter for continuous monitoring. Available without the LCD display, the transmitter can transmit the Hardness value of your solution with a very high accuracy with added option of self calibration. The Hardness of the water is indirectly calculated by the total number of dissolved minerals in the water. With Internal temperature compensation, HRA692 delivers fast and high accuracy. Precision Hardness transmitter immediately detects changes in the Concentration of the total amount of dissolved solids in the solution. With a 230V AC power supply, This instrument features 4 wire electrodes making
it easier in the world to facilitate the replacement of used electrodes.

  • Low Cost OEM Series with Stainless Steel Electrode.
  • Wide Temperature Range with Internal Temperature Compensation.
  • Precision Indication of Hardness with Current Output.
  • Compact Version.
  • Automatic Temperature Compensation.
  • Weatherproof IP65 / Fireproof ABS IP55 Enclosure

Additional information

TDS Range

0 ~ 100% Hardness


±2% of F.S

Operating Temp.

-10 °C to 50 °C

Storage Temp.

-30 °C to 85 °C

Power Supply

230V AC

Electrode Connection

2 Wire Electrodes

Electrode Type

mV PT100


4-20 mA, 2 Wire


ABS Moulded Housing


Wall Mounting


Internal Span and Zero using Potentiometers