Dual Dosing/Injection TDS/EC Controller

Large, bright tri-color L.E.D. display

Two adjustable set points keep TDS levels within a range

Minimum and maximum control points will activate relay controls via switching dry contacts

Can control two different devices (ex. a pump and a valve)

Two alarms (maximum and minimum levels) can be set independently of the control points

Digital calibration

On-screen temperature display

On-screen range & control indicator lights (green, yellow or red)

Includes one sensor probe

Available with the NaCl conversion factor 

TDS Range: 0 - 5000 ppm

EC Range: 0 – 9999 µS

Temperature Range: 1 - 80 °C; 33 - 176 °F

Resolution: 0.1 ppm (0-999); 1 ppm (1000-9999)

Accuracy: +/- 2%

Conversion Factor: NaCl (avg. 0.5)

Calibration: Digital calibration by push button

Factory Calibration: 1413 µS

Set Points: Adjustable by push button

Relay Control: The unit will transmit an analog signal (simple switch) via open or closed contacts to a device (e.g. pump/valve) when the ppm/µS level reaches the maximum TDS/EC limit (Control Point 2) or the minimum TDS/EC limit (Control Point 1)

The contacts are switched back to the normal position once the TDS returns to the acceptable range

Relay Voltage: 5V (attached devices must have their own power supply)

Alarm: Two independent alarms (set by user)

Display: Bright 5/8″ L.E.D. display

Probe: 1/2″ bushing (NPT), 3 meter (9.8 ft) shielded cable (model SP-1-PSC)

Power source: AC 110V / AC 220V