Veris Industries HD SERIES, HO SERIES Data Sheet

Humidity Monitoring | Deluxe Duct & Outdoor Humidity Sensors

HD & HO SERIES

1% & 2% NIST, or Standard 2%, 3%, or 5%

HO

HD

HD and HO Series 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 HD and HO models come with a standard
five-year warranty.

SPECIFICATIONS

INPUT POWER

Voltage Model* Class 2; 12 to 30 Vdc/24 Vac, 15 mA max.

mA Model Class 2; Loop powered 12 to 30 Vdc only,

OUTPUT

Voltage Model 3-wire, observe polarity

mA Model 2-wire, not polarity sensitive (clipped and capped)

HUMIDITY

HS Element† Digitally profiled thin-film capacitive

Accuracy at 25°C from
10-80% RH**
(Multi-point calibration,
NIST traceable)

Temperature Effect, Duct
Model

Temperature Effect,
Outdoor Model

Scaling 0 to 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

†

30 mA max.

(32-bit mathematics) U.S. Patent 5,844,138

HD only: ±1% at 20 to 40% RH in mA output mode;
(multi-point calibration, NIST traceable)
All models: 2%, 3%, or 5% (specify)

±0.1% RH/°C above or below 25 °C (typical)

4 to 20 mA version: (0.0013x%RHx(T°C-25));
0-5V/0-10V versions: (0.0015x%RHx(T°C-25))–
(%RHx0.0008xabs(T°C-25))

Sensor element

Thin-lm capacitive sensor
element recovers from
100% saturation

Accuracy

Fully interchangeable element to
1%, 2%, 3%, or 5%

Easy servicing

Duct sensor element can be
serviced without disturbing
conduit

Potted circuitry

Prevents costly condensate
shorts

accuracy…no calibration

Field replacable

Replace element in the eld…
maintain accuracy and minimize
downtime

Flexibility

Polarity insensitive, two-wire
4 to 20 mA or 3-wire 0-5/0-10
Vdc versions…exible systems
compatibity…save time in the
eld, stock fewer devices

APPLICATIONS

• Controlling HVAC systems for
improved comfort and energy
savings

• Museums, schools, printing
shops, and other locations
requiring humidity control

TEMPERATURE

Optional Temp.
Transmitter Output
HO Transmitter Accuracy
HD Transmitter Accuracy

OPERATING ENVIRONMENT

Operating Humidity
Range

Operating Temp. Range -40 to 50 °C (-40 to 122 °F)

WARRANTY

Limited Warranty 5 years †

AGENCY APPROVALS

† †

† All deluxe models come with a standard five -year warranty. The HS sensing element has a
1-year warrant y. The element is not a par t of the 5-year prod uct warranty.
†† The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration of
Conformity for additional details.
* One side of transformer secondary is connected to signal common, so an Isolation
transformer or dedicated power supply may be required.
** Specified accuracy with 24 Vdc supplied power with rising humidit y. RTD/Thermistors
are not compensated for internal heating of product.
*** Rese t 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 the fac tory upon request or from the Veris website at www.veris.com.
EMC Conform ance - CE Option: Low Voltage D irective 2014/35/EU and EMC Direc tive 2014/30/
EU.
EMC note: Conn ect this product t o a DC distribution ne twork or an AC/DC powe r adaptor with
proper surge protection (EN 61000-6-1 specification requireme nts).

Digital, 4 to 20 mA (clipped & capped) or
0-5/0-10 V output
±1.3 °C (±2.3 °F) typical;
±0.5 °C (1.0 °F) typical

0 to 100% RH non-condensing

• Facilitating compliance
with ASHRAE standards for
environmental control and
indoor air quality

TM

HQ0001790.H 0117

Humidity Monitoring | HD & HO Series

HD/HO 0-5V/0 -10V TEMPERATURE TRANSMITTER
VERSIONS

Wiring Diagram

BLK

–

POWER SUPPLY

24 Vdc

RED

+

BLUE 0 to 10 V HUMIDITY

ORANGE 0 to 10 V TEMP

GREEN 0 to 5 V HUMIDITY

YELLOW 0 to 5 V TEMP

HO 0-5V/0-10V RESISTANCE VERSIONS

Wiring Diagram

BLK (Common)

RED

optional

POWER SOURCE

AC/DC

(See Specifications)

BLUE 0 to 10 V HUMIDITY
GREEN 0 to 5 V HUMIDITY

ORANGE THERMISTOR

{

ORANGE THERMISTOR

HD/HO (4-20 mA TEMPERATURE TRANSMITTER VERSIONS)

Wiring Diagram

POWER SOURCE

DC Only

(See specifications)

DIGITAL CONTROL

4 to 20 mA Return

Temperature

4 to 20 mA Return

Humidity

(optional)

BLUE
HUMIDITY

ORANGE
TEMP

BLUE
HUMIDITY
ORANGE
TEMP

White/Gray 0 to 1 V
Test Leads for use
with voltmeter

HO (4-20 mA RESISTANCE VERSIONS)

Wiring Diagram

BLUE
HUMIDITY

ORANGE
TEMP

BLUE
HUMIDITY

ORANGE
TEMP

White/gray 0 to 1 V
test leads for use
with voltmeter

POWER SUPPLY

24 Vdc only

DIGITAL CONTROL

Humidity

4 to 20 mA Return

Temperature

4 to 20 mA Return

(optional)

+

–

–

ORDERING INFORMATION

Enclosure

H

D = RH Duct
O = Outdoo r

*1% not availabl e on HO.
** Not avai lable with W and Y high -accuracy th ermistors.

Examples

Tem p:

H

No Te mp:

H

Accuracy

1 = 1%*
2 = 2%
3 = 3%
5 = 5%

D 2 N V C T C 2

O 2 X M S X

NIST

N = NIST 1% & 2% only
X = None 2%, 3% ,
5% only

Output

M = 4 to 20 mA
V = 0-5V/0-10 Vdc

US or EU

S = Standard
C = CE

Tem p.

T = Temp
X = No Temp
(Stop he re)

HD

Dimensional Drawing

2.9"

(74 mm)

4.6"

(117 mm)

HO

Dimensional Drawing

2.3"

(58 mm)

4.6"

(116 mm)

Humidity Transmitter Combination

Sensor Type Range

A

= Tra nsmi tte r

Humidity RTD/Thermistor Combination

Sensor Type

B = 100R Platinu m, RTD
C = 1k Platinum, RT D
D = 10k T2, Ther mistor
E = 2.2k, T hermistor
F = 3k, The rmistor
G = 10k CPC, The rmistor
H = 10k T3, Ther mistor
J = 10k Dale, The rmistor
K = 10k with 11k shunt, Therm istor
M = 20k NTC, T hermistor
N = 1800 ohm TAC, Ther mistor
Q = 1uA/˚C, Li nitemp
R = 10k US, Ther mistor
S = 10k 3A 221, Thermisto r
T = 100k, Th ermistor
U = 20k “D”, Ther mistor
W = 10k T2 high acc uracy, Thermis tor
Y = 10k T3 high acc uracy, Thermist or

0.7"

(18 mm)

2.0"

(51 mm)

2.7"

(69 mm)

2.8"

(72 mm)

1 = -40 to 50 ° C
(-40 to 122 °F)
2 = 0 to 50 °C
(32 to 122 °F)

Foam Gasket

2.5" x 2.5"
(64 mm x 64 mm)

8.5"

(216 mm)

OPTION Temp. Cert

Blank = Non e
1 =1pt cal
2 = 2pt cal

OPTIO N Temp. Cer t

Blank = Non e
1 = 1pt cal**
2 = 2pt cal**

0.5" Dia.
(13 mm.)

0.7"

(18 mm)

HQ0001790.H 0117

TM