Ii. sensor specifications – Xylem WQ-FDO OPTICAL DISSOLVED OXYGEN TRANSMITTER User Manual
Page 5
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II.
Sensor Specifications
a. Specifications.
Output Type:
Two 4-20mA outputs
DO Range:
0-400mbar @ 20ºC
Resolution:
0.1mbar
Accuracy:
+/- 0.5%
Drift:
<1% per year
Temp. Range:
0ºC to +50ºC
(+32ºF to +122ºF)
Resolution:
0.01ºC (0.02ºF)
Accuracy:
0.1ºC (0.2ºF)
Service Life of Cap:
1 Year minimum under normal use
Emersion Depth:
6cm Minimum (2.4 Inches)
Pressure Rating:
35psi maximum (25m/82ft H
2
O)
Voltage Requirements: 10-30 VDC
Supply Current:
25ma plus sum of both 4-20mA outputs
Warm Up Time:
6 seconds minimum, 8 recommended
Response Time:
90% in <30 Seconds
95% in <45 Seconds
99% in <60 Seconds
Low flow conditions reduce response time
Operating Temperature: 0°C to +50°C (32º to 122ºF)
Storage Temperature:
0°C to +50°C (32º to 122ºF)
Sensor Dimensions:
0.86” (22mm) diameter x 8” (202mm) long
Interface Dimensions:
0.82” (21mm) diameter x 7.2” (183mm)
Total Weight:
8oz plus cable
b. Connections:
Red:
10-36VDC
Black:
Ground
White:
4-20mA Oxygen Partial Pressure Output
Green:
4-20mA Water Temperature Output
Warning: Always turn off the power when connecting or
disconnecting the sensor or it could be damaged.