W8288CA Hardness (Calcium Ion) Monitor
Instrument Features:
● Color LCD display
● Smart menu operation
● Multiple automatic calibration functions
● Differential signal measurement mode, stable and reliable
● Manual & automatic temperature compensation
● Two sets of relay control switches
● High/low limit & hysteresis control
● Multiple output options: 4-20mA & RS485
● Simultaneous display of ion concentration, temperature, current, etc.
● Password protection to prevent unauthorized operation
Specifications:
(1) Measuring Range (Depending on Electrode Range):Concentration: 0.02–40,000 mg/L(Solution pH: 2.5–11 pH)Temperature: 0–50.0°C
(2) Resolution:Concentration: 0.01 / 0.1 / 1 mg/LTemperature: 0.1°C
(3) Basic Error:Concentration: ±5% (depending on ion concentration)Temperature: ±0.3°C
(4) Dual Current Output:0/4–20 mA (Load resistance < 500Ω),20–4 mA (Load resistance < 500Ω)
(5) Communication Output:RS485 MODBUS RTU
(6) Two Sets of Relay Control Contacts:3A 250VAC, 3A 30VDC
(7) Power Supply (Optional):
85–265VAC ±10%, 50±1Hz, Power ≤3W,9–36VDC, Power ≤3W
(8) Dimensions:98 × 98 × 130 mm
(9) Mounting Method:Panel-mounted or wall-mounted,Panel cutout size: 92.5 × 92.5 mm
(10) Protection Rating:IP65
(11) Instrument Weight:0.6 kg
(12) Operating Environment:Ambient Temperature: -10–60°C,Relative Humidity: ≤90%
No strong magnetic interference (except Earth's magnetic field).














