Install the Dual TDS Controller to constantly monitor TDS levels of water produced by a high-output system. Immediately know if the TDS levels rise above an acceptable level.
FEATURES
Monitors and controls TDS levels of two water lines (e.g., feed water and product water) for high output commercial systems.
Large, bright L.E.D. display.
An alarm will sound if the TDS level rises above the user-set level for the output water.
Installs easily in minutes.
Includes two sensor probes (at no extra cost).
The PS-200 is a monitor for Line 1 (in-line) and a controller for Line 2 (out-line).
Protective cover also available (sold separately)
SPECIFICATIONS
Range: 0 - 999ppm 
Accuracy: ±2%
Conversion Factor: NaCl (avg. 0.5)
Resolution: 1 PPM 
ATC: Yes (1 - 65 degrees Celsius) 
Calibration: Adjustable 
Setting: Controlled by on-screen up/down buttons 
Relay Control: The unit will open or close a circuit via dry contacts when the ppm level (out line/line 2 only)reaches or exceeds the control setting (simple switch). It can be used to control a pump, solenoid valve or other device. (In line/Line 1 does not have a control function) 
Relay Voltage: 5V (simple switch)
Alarm: Optional steady beep for Out line/Line 2 (set by user) 
Display: Bright 5/8" L.E.D. display 
2 Probes: 1/2" bushing (NPT), 3 meter (9.8 ft) shielded cable 
Power supply: AC 110V / AC 220V 
Dimensions: 7.2 x 7.2 x 10.2 cm (2.8 x 2.8 x 4 in.) 
Monitor Weight: 476 g (1 lb .8 oz) 
Total Weight: 822.1 g (1 lb 13 oz)