System
Specification
Operational
Principle: Ammonium , Nitrate selective Electrode , compensated
for Potasssium, Chloride, pH and temperature
Range: 0.1 - 1000 mg/l NH4-N
0.1 - 1900 mg/l NO3
pH 2-12
Temp - 0-40oC
Resolution: dependant on parameter
Repeatability: dependant on parameter
Accuracy: +/- 5% of full scale
Response time: 95% < 1min
Calibration Method: Manual, single point offset
or 2 point calibration in sample matrix
Transmitter/Controller Specification
Dimensions
(hxwxd) 255x215x120 mm
Weight: 2.5 kg (approx)
Materials: Polystyrol
Ambient conditions: 0-50 0C
Weather Protection: IP 65
Outputs:
Display:
Numeric/graphic LCD
Current loop: 4 off 0/4 – 20 mA into 500
ohms
Relay outputs: 5 off user config relays (6A @250V)
Data interface: RS 232 C (PC/laptop) RS485 for
NAS760
Inputs: Wet end assemblies: up to 2 under normal
circumstances
Parameters: Upto 4 normally, max of 3 in one assembly
Power requirements: Supply voltage: 100-240 VAC
Load: 15VA max (excluding compressor)
Sensor
assembly Specification
Dimensions:
armature dia: 75mm x 125mm length
Weight: 4.5kg approx.
Materials: Armature - polyethylene
Connections: ¼” push fit air line,
RS485 signal line
Electrodes:
Type: Ion selective measuring electrode + ref.
Dimensions: 12mm dia x 120mm long (ref and measurand)
Materials: Measurand: POM, Ref: Quartz glass
Reference: Ag/AgCl
Electrolyte: KCl
Junction: Double chamber electrode with bridge |
