Veris Industries HO SERIES Datasheet - Manual

HU
MIDIT
Y
VERIS INDUSTRIES
800.354.8556 +1 503.598.4564 www.veris.com
Deluxe Duct & Outdoor
Humidity Sensors
FEATURES
● Thin-film capacitive sensor element recovers from 100% saturation
● Fully interchangeable element to 1%, 2%, 3%, or 5% accuracy...no calibration
(1% not available on HO models)
● Replace element in the field...maintain accuracy and minimize downtime
● Duct sensor element can be serviced without disturbing conduit
● Polarity insensitive two-wire 4-20mA or 3-wire 0-5/0-10VDC versions...flexible
systems compatibity
● Potted circuitry prevents costly condensate shorts
● Calibration-free interchangeable NIST traceable HS element
● HS element is microprocessor profiled with on-board nonvolatile memory
● Multi-point digital calibration to NIST standards
● NIST certification available
● Minimizes field calibration downtime
DESCRIPTION
HD and HO Deluxe humidity transmitters provide an ideal solution for measuring
relative humidity in a wide range of conditions. All devices are equipped with a
thin-film capacitive sensor that is easily replaceable in the field. These sensors are
calibrated to NIST standards, with certificates available (see Ordering Information;
choose “N” in NIST block). Temperature sensing options are also available.
The duct mounted HD is encased in a die cast metal housing for extra strength.
The outdoor HO housing is completely weather proof – the most rugged sensor
available.
All Deluxe models come with a standard five-year warranty.
APPLICATIONS
● Controlling HVAC systems for improved comfort and energy savings
● Museums, schools, printing shops, and other locations requiring humidity
control
● Facilitating compliance with ASHRAE standards for environmental control and
indoor air quality
SPECIFICATIONS
Input Power:*
Voltage Model 12-30VDC/24VAC, 15mA max.
mA Model Loop powered 12-30VDC only, 30mA max.
Output Power:
Voltage Model 3-wire, observe polarity
mA Model 2-wire, not polarity sensitive (clipped and capped)
Humidity:
HS Element Digitally profiled thin-film capacitive (32 bit mathematics) U.S. Patent 5,844,138†
Accuracy at 25°C from 10-80% RH** ±1% (HD only), 2%, 3%, or 5% (specify); multi-point calibration, NIST traceable
Temperature Effect, Duct Model ±0.1% RH/°C above or below 25°C (typical)
Temperature Effect, Outdoor Model 4-20mA version: (0.0013x%RHx(T°C-25)); 0-5 V/0-10V versions: (0.0015x%RHx(T°C-25))–(%RHx0.0008xabs(T°C-25))
Scaling 0-100% RH
Hysteresis 1.5% typical
Linearity Included in accuracy spec.
Reset Rate*** 24 hours
Stability ±1%@20°C (68°F) annually, for two years
Temperature:
Optional Temperature Transmitter Output Digital, 4-20mA (clipped and capped) or 0-5V/0-10V output;
HO transmitter accuracy: ±1.3°C (±2.3°F) typical; HD transmitter accuracy: ±0.5°C (1.0°F) typical
Operating Environment:
Operating Humidity Range 0 to 100% RH noncondensing
Operating Temperature Range -40° to 50°C (-40° to 122°F)
† The HS sensing element has a 1-year warranty. The element is not a part of the 5-year product warranty.
* One side of transformer secondary is connected to signal common, so an Isolation transformer or dedicated power supply may be required.
** Specified accuracy with 24VDC supplied power with rising humidity. RTD/Thermistors are not compensated for internal heating of product.
*** Reset Rate is the time required to recover to 50% RH after exposure to 90% RH for 24 hours.
Shielded cabling is required for conformance to EMC standards. Technical information is available from factory upon request or is available on our website: www.veris.com.
EMC Conformance - CE Option: Low Voltage Directive 2006/95/EC and EMC Directive 2004/108/EC.
EMC Special Note: Connect this product to a DC distribution network or an AC/DC power adaptor with proper SURGE PROTECTION (EN 61000-6-1:2007 specification requirements).
1% & 2% NIST, or Standard 2%,
3%, or 5%
HD HO
HD & HO SERIES
HQ0001789.C 01131