CON500 Loop Powered Contacting Conductivity Transmitter

CON500 Loop Powered Contacting Conductivity Transmitter

This isolated output 4-20mA industrial transmitter, a sturdy microprocessor-based instrument, measures conductivity and temperature. It transmits conductivity measurements via a two-wire power supply loop. The industrial transmitter has many user friendly features—all of which are easily accessible via the water resistant membrane keypad. Ideal for connecting to a PLC for advanced control systems, the transmitter can also be connected to a recorder for a lowcost documentation system. The instrument housing is designed for panel or wall mounting.

-       Six selectable conductivity ranges for a wide range of measurements

-       Isolated Output prevents output interference caused by electrical noise or leakage from the input source

-       Out-of-range Output Current Indicator indicates an out-of-range measurement by emitting a 3.8mA output current

-       Hold Output Current Indicator to indicate ‘HOLD’ mode during calibration or set up mode.

-       Scaleable 4-20 mA Current Output

-       Primary and secondary display for simultaneous display of Conductivity and Temperature values

-       Easy Push Button Operation

-       Automatic (with Pt 100) or manual Temperature Compensation

-       Panel or Wall Mount, Nema 4x, IP65 Weatherproof Housing



1)     Conductivity Ranges:

R1: 0-19.99 μS/cm, 0.01 μS/cm resolution

R2: 0-199.9 μS/cm, 0.1 μS/cm resolution

R3: 0-1999 μS/cm, 1μS/cm resolution

R4: 0-10.00 mS/cm, 0.01 mS/cm resolution

R5: 0-19.99 mS/cm, 0.01 mS/cm resolution

R6: 0-199.9 mS/cm, 0.1 mS/cm resolution

2)     Cell Constants

k=0.1, R1-R5

k=1.0, R1-R6

k= 10.0, R2-R6

3)     Accuracy

±1% of full scale reading in respective range

4)     Temperature

0 °C to 100 °C (32 °F to 212 °F)

5)     Temperature Resolution

0.1 °C (0.1 °F)

6)     Relative Temperature Accuracy

 ±0.5 °C (±0.9 °F)

7)     Sensor Pt100

(3 wire / 2 wire)

8)     Temperature Compensation


9)     Output

4.0-20.0mA (Galvanically isolated)

10)  Cell Constant User-Selectable

 (0.10 to 10.00)

11)  Temperature Coefficient

0 to 10% (selectable)

12)  Normalization Temperature

 20.0 °C to 25 °C

13)  Display

 Dual Display Custom LCD

14)  Power Requirements

12 to 24V DC, maximum 600 Ohm load

15)  Dimension

 96 x 96 x 66 mm (3.78 x 3.78 x 2.6 inch)

16)  Weight

 210 g

17)  Certifications





CON500 Datasheet