RFQ

PSC-150: Extended Range EC/TDS Controller

  • NG # 04248-HW-HM-007

The HM Digital PSC-150 is an extended-range EC/TDS controller designed for continuous monitoring and automatic control of water quality in commercial and industrial systems. It features a bright LED display, temperature monitoring, and relay-based control for external devices.

Manufactured By :
HM Digital
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Overview

The PSC-150 controller is engineered for high-output water treatment applications where precise monitoring of Total Dissolved Solids (TDS) and Electrical Conductivity (EC) is essential. It combines accurate measurement with automated control functions, allowing users to maintain optimal water quality levels.

Equipped with a user-friendly interface, the unit provides real-time readings along with on-screen temperature display. Its built-in relay system enables automatic activation or shutdown of connected equipment such as pumps or solenoid valves when preset thresholds are reached. The controller also includes an audible alarm system for added safety and operational awareness.

Specification

  • EC Range: 0 – 9999 µS 
  • TDS Range: 0 – 5000 ppm 
  • Temperature Range: 1 – 75°C (33 – 167°F) 
  • Accuracy:  ±2% 
  • Resolution:  
    • 0.1  µS/ppm (0 – 999) 
    • 1 µS/ppm (1000 – 9999) 
  • Conversion Factor: NaCl (avg. 0.5) 
  • Automatic Temperature Compensation (ATC): Yes (1 – 65°C) 

Control & Functions

  • Relay Control: Dry contact switching for external devices (pump, valve, etc.) 
  • Relay Rating: 5A, 250VAC 
  • Alarm: User-set audible alarm (steady beep) 
  • Calibration: Manual adjustable 
  • Settings: Controlled via on-screen buttons 

Display & Interface

  • Display Type: Bright 5/8″ LED display 
  • Temperature Display: On-screen (°C/°F) 
  • Visual Indicator: Tri-color display for status monitoring 

Probe & Installation

  • Probe Type: 1/2″ NPT bushing 
  • Cable Length: 3 meters (9.8 ft), shielded 
  • Includes: One sensor probe 

Electrical & Physical

  • Power Supply: AC 110V / 220V 
  • Dimensions: 7.2 × 7.2  × 11.1 cm 
  • Monitor Weight: Approx. 230 g 
  • Shipping Weight: Approx. 595 g 

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PSC-50: TDS/EC Controller
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