The industrial online ammonia nitrogen monitor is an online water quality monitoring and control instrument with a microprocessor. This instrument is equipped with various types of ion electrodes and is widely used in power plants, petrochemicals, metallurgy electronics, mining, papermaking, biological fermentation engineering, medicine, food and beverage, environmental protection water treatment, etc. It continuously monitors and controls the ion concentration values of water solutions.
Instrument features:
● Large LCD screen liquid crystal display
● Intelligent menu operation
● Historical data recording
● Various automatic calibration functions
● Differential signal measurement mode, stable and reliable
● Manual and automatic temperature compensation
●Three groups of relay control switches
●Upper limit, lower limit, hysteresis control
●Multiple output methods including 4-20mA and RS485
● Display of ion concentration, temperature, current, etc. on the same interface
● Password setting for protection against unauthorized operation by non-staff members
Techn ical specificat ion
(1) Measurement range (based on electrode range):
Ion concentration (NH4+): 0.02 - 18000 mg/L (Solution pH value: 4 - 10 pH);
Compensated ion concentration (K+): 0.04 - 39000 mg/L
(Solution pH value: 2 - 12 pH);
Temperature: -10 - 150.0 ℃;
(2) Resolution:
Concentration: 0.01/0. 1/1 mg/L;
Temperature: 0.1 ℃;
(3) Basic error:
Concentration: ±5 - 10% (based on electrode range);
Temperature: ±0.3 ℃;
(4) 2-channel current output:
0/4 – 20 mA (load resistance < 750 Ω);
20 – 4 mA (load resistance < 750 Ω);
(5) Communication output: RS485 MODBUS RTU;
(6) Three groups of relay control contacts: 5A 250VAC, 5A 30VDC;
(7) Power supply (optional):
85 – 265 VAC ± 10%, 50 ± 1 Hz, power ≤ 3 W; 9 - 36 VDC, power: ≤ 3 W;
(8) External dimensions: 144 × 144 × 118 mm;
(9) Installation method: panel-mounted, wall-mounted, pipe-mounted;
Panel opening size: 137 × 137 mm;
(10) Protection level: IP65;
(11) Instrument weight: 0.8 kg;
(12) Instrument working environment: Ambient temperature: -10 - 60 ℃;
Relative humidity: not more than 90%;
No strong magnetic field interference except for the Earth’s magnetic field.
