HG12D-C Conductivity Electrode

HG12D-C series conductivity electrode is inductance type electrode, K ≈ 2,  applicable to solutions with high conductivity and strong corrosion.  It directly output voltage,  4-20mA and RS485 digital signal,  can be used to match with conductivity transmitter or directly connect to PLC or DCS.

Product Description

● Conductivity probe consists of two alloy rings round with coil, which is enclosed in the plastic ring, so the conductivity probe does not contact the measured liquid, no need of frequent maintenance.
● Avoid the problem of ion deposition, coverage or polarization. Oil contamination or pollution does not affect the inductance type electrode’s performance.
● Service life can reach about 10 years.
● Built-in special integrated circuit, directly output voltage, 4-20mA and RS485 digital signal.
● It can be used to match with conductivity transmitter or directly connect to PLC or DCS


Technical data:

Measuring principle Inductance type
Wetted material PP,  PFA (optional)
Measuring range 0 ~ 2 mS/cm;  0 ~ 20 mS/cm;
0 ~ 200 mS/cm;  0 ~ 2000 mS/cm  ( optional )
Operation temperature 100℃
Operation pressure 1.0 Mpa,  2.5Mpa
Temperature compensation option Pt100 or customize
Output signal 0 ~ 2000 mV,  4 ~ 20mA ( Load ≤ 500Ω ), RS485 (optional)


Appearance & dimension: 

Type Picture Dimension
Type 1  hg12d c 02  dimension 01 3
Type 2  hg12d c 03  dimension 02 3



Wiring mode Wiring Diagram
Voltage type wiring wiring 01
Current type wiring wiring 02
Digital type wiring wiring 03


Installation attentions:

> If conductivity sensor is installed on the pipeline, please pay attention to the following:
1. The fluid shall flow through the circular hole of the conductivity sensor, see the following diagram

installation diagram 2
2. Leave at least 20mm of space room around the conductivity sensor

 > If conductivity sensor is installed in the pond or open tank, please pay attention to the following:
1. Keep away from the feed inlet.
2. The circular hole of the conductivity sensor shall be inclined to the liquid surface, to avoid the occasional air bubbles staying around the conductivity sensor.





Answer : Please send your question or enquiry to our email: sales@hginstrument.com, we will forward the questions to the related engineer.

Answer :  Please communicate with the sales about the return procedure before returning product.

Answer :  The delivery time depends on the order quantity and product specification.  If the product’s specification is conventional ( not special ),  delivery time is 5 or 7 working days for order quantity ≤ 10 pieces;  delivery time is 2 or 3 working weeks for order quantity 15 ~ 30 pieces. 

Answer :  by Courier,  by Sea or by Air

Answer :  Yes,  Generally warranty is one year.

Answer :  From year 2015  to year 2021,  average annual sales is RMB 350 million ( about USD 54.7 million )

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