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HM Digital Controllers
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HM Digital CIC-152-N / CIC-152-4: Dual Control Dosing/Injection TDS/EC
The HM Digital CIC-152 is a professional-grade inline TDS/EC controller designed to monitor and control dosing and injection systems. The CIC-152 controls two separate systems simultaneously, making it ideal for water treatment, hydroponics, aquaculture, and laboratory applications.
Features
Monitors and controls dosing or injection systems
Large, bright tri-color LED display (green, yellow, red range indicators)
Two adjustable set points to keep TDS/EC levels within a defined range (maximum and minimum)
Minimum and maximum control points activate relay controls via dry contact switching
CIC-152 controls two independent devices simultaneously (e.g., pump and valve)
Two independent alarms (maximum and minimum levels) set independently of control points
Digital push-button calibration
On-screen temperature display with ATC (Automatic Temperature Compensation)
Includes one sensor probe (model SP-1-PSC)
Available in NaCl conversion factor (CIC-152-N) or 442™ conversion factor (CIC-152-4)
Specifications
TDS Range: 0–5000 ppm (CIC-152-N) | 0–8500 ppm (CIC-152-4)
EC Range: 0–9999 µS
Temperature Range: 1–80°C / 33–176°F
Accuracy: ±2% of reading
Resolution: 0.1 ppm (0–999) | 1 ppm (1000–9999)
ATC: Yes (1–80°C)
Calibration: Digital (push button) | Factory: 1413 µS
Conversion Factor: CIC-152-N: NaCl (avg. 0.5) | CIC-152-4: 442™ (0.4–0.7)
Set Points: Adjustable by push buttons. Control Point 2: Maximum TDS Limit. Control Point 1: Minimum TDS Level.
Relay Control: Analog signal via open/closed contacts; switches back when TDS returns to acceptable range
Relay Switching: 5A, 250VAC
Alarm: Two independent user-set alarms
Display: Bright 5/8″ LED
Probe: 1/2″ NPT bushing, 3m (9.8 ft) shielded cable
Power: AC 110V / AC 220V
Dimensions: 7.2 × 7.2 × 11.1 cm (2.8 × 2.8 × 4.4 in)
Monitor Weight: 241 g (8.5 oz)
Shipping Weight: 610 g (1 lb 5.5 oz)
