PRODUCTS
CONTACT US
TEL: +86-532-85754589,85775618
FAX: E-Mail
E-MAIL: tlead.net@gmail.com; tlead.net@hotmail.com
EXTENDED-RANGE EC/TDS CONTROLLER WITH RELAY OUTPUT
The PSC-150 is an extended-range controller for monitoring and controlling TDS and EC levels in high-output commercial systems. It combines digital calibration, on-screen temperature display, a bright tri-color LED display, and relay switching. The controller can switch compatible equipment when the measured ppm or µS value reaches or exceeds the user-selected set point. One sensor probe is included.
1. Commercial monitoring — monitors TDS and EC values for high-output commercial systems
2. Tri-color LED display — bright 5/8-inch display with on-screen temperature in °C or °F
3. Relay control — dry-contact relay control switches a connected circuit when the measured value reaches or exceeds the set point
4. User-set alarm — sounds when the TDS/EC level rises above the selected level; a steady beep can be enabled or disabled by the user
5. Digital calibration — plus automatic temperature compensation from 1 to 65 °C (33 to 149 °F)
6. Included probe — one sensor probe with a 1/2-inch NPT bushing and a 3 m (9.8 ft) shielded cable
The tri-color LED display shows the measured value, the active unit, and the alarm or temperature line, with the model marking on the front face. The panel carries the temperature mode, setting, up, down, and calibration keys.
Reading, unit and alarm line on the display | 
Temperature mode, setting, up, down and calibration keys |
| Model | PSC-150 |
| Measurement parameters | TDS and electrical conductivity (EC) |
| TDS/EC resolution | 0.1 µS/ppm (0–999); 1 µS/ppm (1,000–9,999) |
| Temperature range | 1–75 °C (33–167 °F) |
| Accuracy | ±2% |
| TDS conversion factor | NaCl, average factor 0.5 |
| Automatic temperature compensation | Yes, from 1 to 65 °C (33 to 149 °F) |
| Calibration | Manual adjustment with digital, on-screen controls |
| Set point | User-adjustable using the on-screen up/down buttons |
| Relay control | Dry contacts open or close a circuit when measured ppm/µS reaches or exceeds the set point |
| Relay switching rating | 5 A, 250 V AC |
| Alarm | User-selectable steady beep when TDS/EC exceeds the set point |
| Display | Bright 5/8-inch tri-color LED display; on-screen °C/°F temperature |
| Included probe | One sensor probe; 1/2-inch NPT bushing, 3 m (9.8 ft) shielded cable |
| Power supply | AC 110 V or AC 220 V, version dependent |
| Dimensions | 7.2 × 7.2 × 11.1 cm (2.8 × 2.8 × 4.4 in.) |
| Monitor weight | 230 g (8.1 oz) |
| Total shipping weight | 595 g (1 lb 5 oz) |
Set the desired TDS or EC level with the on-screen up/down controls. When the measured value reaches or exceeds the set point, the dry-contact relay opens or closes the connected circuit. This simple switching function can control a compatible pump, solenoid valve, or other device.
1. Commercial water systems — use the PSC-150 as a commercial TDS/EC controller where water quality levels need to be monitored
2. Set-point response — connected equipment can respond to a selected set point
3. Pumps and valves — the relay can operate compatible equipment such as a pump or solenoid valve
💡 Need an EC/TDS controller for your water system?
Contact our sales team today for bulk pricing, technical support, or to request a demo unit.
Or Email us: tlead.net@hotmail.com