NOBO Online ammonia nitrogen Water Testing Meter NH3 NH4 Ammonia Nitrogen Probe Sensor For Sewage Water Technical indicators
(1)Measuring Range: NH3-N: 0-100.0mg/L or 0-1000.0mg/L pH: 0.00-14.00 Temperature: 0-60°C K+(Optional): 0-1000.0mg/L (2)Resolution: 0.1mg/L, 0.1pH (3)Accuracy: ±5%FS(0-100mg/L), ±10%FS(100-1000mg/L), ±0.5°C (4)Temp. compensation: PT1000. (5)Control interface: two relays of ON/OFF control function; High point and low point alarm signal photoelectric isolation output. (6)Signal isolation output: 4-20mA signal output with photoelectric coupler isolation protection) (7)Relay: the relay hysteresis can be set arbitrarily, the relay load is 3A 220VAC/24VDC (8)Working conditions: Ambient temperature is 0~60°C, relative humidity ≤90%. (9)Output load: <750Ω（4-20mA） (10)Working voltage: AC 220V10%, 50/60Hz or DC24V or DC12V (11)Size: 100×106×168mm(controller) (12)Hole-cutting Size: 92×92mm (13)Protection level: IP65(controller), IP68(ammonia nitrogen sensor)
Main Feature
●Large screen dot matrix LCD display.
●Automatic temperature compensation function; automatic/manual pH compensation function; automatic/manual potassium ion compensation function (optional).
●Communication function (optional): With RS-485 communication interface (partially compatible with MODBUS protocol), the value corresponding to 4-20 mA current output can be set arbitrarily.
●Photoelectric isolation 4-20mA current output.
●Relay lag value can be set freely, avoid frequent action of switch relay, and with function of setting the replay on and off. ●Using two-point correction method.
●Watchdog function: to ensure that the meter will not crash.
●Power off protection>10 years.
