Viconics VH20 - Manual

1
VH20 Electronic Humidity Transmitter Series
Description
The VH20 series, microcomputer-based humidity transmitters are designed for
accurate humidity sensing in non-corrosive commercial applications such as:
hospitals, schools, office buildings, retail stores, museums and computer rooms.
Features Benefits
Microcomputer-based 
Exceptional accuracy and linearity
2% models 10 point calibration
3% models 3 point calibration 
Increased accuracy and linearity across the
required control range
Timed RH level status LED 
Rapid trouble-shooting and commissioning.
Humidity level is proportional to a 10 second
duty cycle. Ex, using a time clock, if pulse
duration is 6.5 seconds, sensed % RH by
transmitter is 65% RH
Elegant aesthetic design 
Blends well in all environments
Various additional temperature
sensor options available 
More functionality for DDC system installation
by combining local temperature and humidity
sensing in a single component
Available models
Model Output Accuracy Temperature Sensor Mounting Extension
VH2 0 0-5 / 0-10 V 2 +/- 2% 0 None W Wall
1 4-20 mA 3 +/- 3% 1 3K Ohms thermistor +/- 1% D Duct
2 10K Ohms Type 2 +/- 1% E Outdoor
3 10K Ohms Type 3 +/- 1%
4 100K Ohms thermistor +/- 1%
5 1K Ohm NIFE
6 100 Ohms Platinum
7 1K Ohm Platinum
VH2 0 2 2 W 1000
Example: Above model is VH2022W1000 for wall mount, 2% accuracy, 0-10 or 0-5 Vdc output with 10K Ohms Type 2
temperature sensor.
Models description
Model: Description: Application: Picture:
VH20 Wall Room sensor

Remote room humidity sensing

Accessory temperature sensor available
VH20 Duct
Duct sensor with
junction box

Remote return air humidity sensing with the
sensor mounted on the return air duct.

Outside air humidity sensing with the sensor
installed in the fresh air plenum.

Supply air humidity sensor

Accessory temperature sensor available
VH20
Exterior
Outside air
sensor, NEMA 4
enclosure

Outside air humidity sensing with the sensor
installed directly exposed to the elements.

Sensor uses a water resistant NEMA 4 PVC
enclosure for outdoor applications

Accessory temperature sensor available