HM Digital PS-203 TDS Controller

Product Summary:
The HM Digital PS-203 is a precision TDS controller designed for real-time monitoring and control of total dissolved solids (TDS) in water systems. It features dual bright FND displays, automatic temperature compensation, and relay control for device automation.

Key Features:

• TDS Range: 0 – 9999 ppm with 0.1 ppm resolution

• ±2% Accuracy with NaCl conversion factor

• Dual independent relay control (5V dry contacts)

• Automatic Temperature Compensation (1–60°C)

• Digital up/down button calibration

• Bright dual FND 4-digit display

• Optional audible alarm

• AC 110V/230V operation

• Comes with 3m shielded cable and ½” NPTF probe

Applications:

• RO and water purification systems

• Hydroponics and aquaponics monitoring

• Industrial water treatment plants

• Aquariums and fish hatcheries

• Cooling tower water control

Product Benefits:

• Precise ppm control for critical applications

• Dual display enhances visibility for both sensors

• User-friendly digital calibration system

• Independent relay outputs for automation

• Easy installation with long probe cable

FAQs:

Q1: Can the HM Digital PS-203 control a pump or solenoid valve?
Yes, the dual relay output can independently control devices like pumps or valves when the TDS level exceeds set thresholds.

Q2: Does the device require manual calibration?
No, it features digital up/down button calibration, making it quick and easy to adjust.

Q3: Is the TDS reading temperature compensated?
Yes, the unit includes automatic temperature compensation (ATC) for accurate readings from 1°C to 60°C.