Electro-Chemical Devices (ECD) HYDRA Ammonium - Manual (Page 36)

Page 28 HYDRA NH
4
+ -N
7.0 ENGINEERING DOCUMENTATION
7.1 SPECIFICATIONS
Sensor
Three Electrode system with spray cleaner, Ammonium ISE (NH
4
+ - N) is the primary measurement. The
Potassium ISE and pH glass electrodes are used to compensate the NH
4
+ signal. The Sensor is water-
proof with an ingress rating of IP 68.
Measurement Range
NH
4
+ -N: 0.1 to 1000 ppm
Operating Temperature
0° C to 40° C (32° F to 104° F)
Min/Max Flow Rate
Minimum 0.1 m/s
Maximum 3.0 m/s
Wetted Materials
PVC, PES, PVDF, PTFE, Viton, Glass, 316 SS
Accuracy
± 3% of reading, dependent on Calibration
Response Time
T90 1 minute
Electrode Life
ISEs: 4- 6 months, typical
pH electrode: 6-12 months, typical
C22 Analyzer
Measurements
Ammonium: 0.01 to 1000 ppm as NH
4
+
- N
Potassium: 0.01 to 1000 ppm
pH: 0 to 14 pH
Temperature: 0° C to 100° C (32° F to 212° F)
Compensation
pH 4 – 10 pH
Potassium: 0.1 to 1000 ppm
Display
2.5” X 1.75” backlit LCD, 4 lines of Text & Graphical
Enclosure
NEMA 4X, LxWxD: 5.7” x 5.7” x 7
Outputs
(2) 4-20 mA maximum load 800 ohms @ 24 VDC
Configured: 0.1 to 20 mg/l NH
4
+
- N; 0 – 14 pH; optionally up to (4) 4-20 mA outputs
Input Power