Installation guide, Operation, Wiring troubleshooting – Veris Industries HO SerieS Install User Manual
Page 2: Ho series

Z201382-0X
PAGE 2
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02112
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TM
HO SERIES
INSTALLATION GUIDE
OPERATION
The HO Series outdoor humidity sensors provide high accuracy humidity monitoring
with a fully replaceable HS element for easy field maintenance. NIST certified
accuracy and temperature sensing capability are available.
WIRING
TROUBLESHOOTING
Problem
Solution
Filter tip does not fit on probe
HS element is backwards; reverse element.
Unit reads approx. 4.5mA
HS element is backwards; reverse element.
Unit reads 100% with new
replacement sensor
Unit must be unpowered when installing a new sensor;
interrupt sensor power to restart.
Accuracy appears incorrect
· Remove HS element while powered and verify output
goes to full scale.
· Verify voltage test leads on 4-20mA models
corresponds to the 4-20mA output.
0-5V/0-10V Versions
RTD/Thermistor, 0-5V/0-10V Versions
4-20mA Versions
RTD/Thermistor, 4-20mA Versions
NOTE: For 24 VAC transformer powered applications, one side of transformer secondary is con-
nected to common. Isolation transformer or dedicated power supply may be required.
POWER SUPPLY
24 VDC only
DIGITAL CONTROL
Temperature
4-20mA Return
(optional)
Humidity
4-20mA Return
BLUE
HUMIDITY
BLUE
HUMIDITY
White/Gray 0-1V
Test Leads for use
with voltmeter
ORANGE
TEMP
ORANGE
TEMP
+
–
–
POWER SUPPLY
24 VDC
BLK
RED
BLUE 0-10V HUMIDITY
ORANGE 0-10V TEMP
GREEN 0-5V HUMIDITY
YELLOW 0-5V TEMP
–
+
8.45"
(215 mm)
POWER SUPPLY
12 to 24 VDC
DIGITAL CONTROL
Temperature
4-20mA Return
(optional)
Humidity
4-20mA Return
BLUE
HUMIDITY
BLUE
HUMIDITY
White/Gray 0-1V
Test Leads for use
with voltmeter
ORANGE
Thermistor
ORANGE
Thermistor
+
–
–
POWER SUPPLY
12 to 24 VDC/24 VAC
BLK
RED
BLUE 0-10V HUMIDITY
GREEN 0-5V HUMIDITY
ORANGE THERMISTOR
ORANGE THERMISTOR
–
+