Honeywell H7012A, H7012B PRODUCT DATA

Honeywell
H7012A,B
ROOM HUMIDITY SENSOR/
COMBINED ROOM HUMIDITY/TEMPERATURE SENSOR
PRODUCT DATA

FEATURES

Pt 1000, BALCO 500 or 20kΩΩΩΩ NTC temperature
sensing element
Wide sensing range
Capacitance type sensing element for relative
humidity
Plug-in design

GENERAL

The H7012A Room Humidity Sensor is a capacitance type relative humidity sensor for wall mounting.
The H7012B Combined Room Humidity/Temperature Sensor incorporates a capacitance type relative humidity sensor with a Pt 1000, BALCO 500 or 20k NTC temperature sensor in one housing.
These sensors are used for control, indication and alarm monitoring in room air conditioning installations.

Models

OS-No. Temperature Sensor Type

SPECIFICATIONS

General:
Power supply 24Vac, +20...-30%; 50/60Hz,
34Vdc, +20...-30% Current consumption 20mA @ 24V Ambient 0...50°C (+32...122°F), 5...95%rh
operating limits non condensing Ambient -25...70°C (-13...158°F), 5...95%rh
storage limits non condensing Dimensions see Fig. 2 Weight 130g Case Plastic ( ABS )
flame retardend acc. to UL94-V0 Mounting Wall, surface or wall outlet box Protection Standard IP 30 acc. to EN60529
Safety Class II acc. to EN60730-1
H7012A1009 H7012B1007 Pt 1000 H7012B1015 BALCO 500 H7012B1023
-
20k NTC
EN0C-0610 0398R3-MA
H7012A,B ROOM HUMIDITY / TEMPERATURE SENSOR
Temperature:
Temperature sensing range 0...50°C (32...122°F)
Nominal value Pt 1000 1000 @ 0°C BALCO 500 500 @ 23.3°C NTC 20k @ 25°C
Accuracy Pt 1000 ±0.3K acc. to DIN IEC 751 Class B BALCO 500 ±0.4K @ 23.3°C NTC ±0.2K at 25°C
Sensitivity Pt 1000 ≈3.85Ω/K BALCO 500 2Ω/K
Characteristic see EN0C-0603 Response time @ air velocity 0.02...0.07m/s
τ
0.5 Pt 1000
τ
0.5 Balco 500
τ
0.5 NTC
=50s
=140s
=134s
Overview
Following sensors can be applied for the following control systems:
Relative Humidity:
Humidity sensing range 5...95%rh Output signal 0...1V / 0...10V = 0...100%rh
Output Impedance 1V range 183 10V range 274
Outputs short circuit protected Sensitivity 10mV / %rh or 100mV / %rh Accuracy
5...10%rh ±10%
10...30%rh ± 5%
30...70%rh ± 3%
70...90%rh ± 5%
90...95%rh ±10%
τ
Response time
0.5
=20s
Control systems Temperature Humidity
Pt 1000 20kΩΩΩ NTC BALCO 500 0...1Vdc 0...10Vdc
Excel Classic X X X X Excel Plus X X X X High Performance Excel Plus X X X X Excel EMC X X X X Excel 500/600 (XF521) X X X Excel 500/600 (XF526) X X X X Excel 20 & 50 X X Excel 80B & 100B X X X Excel IRC Multicontroller
R7451A1030 MicroniK 100 X X MicroniK 100 “NEW“
R7420B1036/R7420F1045 MicroniK 200 X X X X
XXX
XX
EN0C-0604 0796R2-MA 2

DIMENSIONS

H7012A,B ROOM HUMIDITY / TEMPERATURE SENSOR
80 (3.15)
Honeywell
Honeywell
HoneywellHoneywell
130
(5.12)
Dimensions in mm and (in ch)
20
(0.79)
(1.34)
34
Fig. 1 Dimensions
11
(0.43)
5 mounting holes 4mm (0.16) dia. for 3 (2) screws 3.5mm (0 .14) dia. mounted in positions 1 (preferred) or 2.
1
2
1,2
2
1
60 (2.36)
30
(1.18)
60
(2.36)
107
(4.21)

INSTALLATION

230Vac
Transformer f or sensors and actuators
24Vac
Sensor
1
27
0...1V/
0...10V
5 / 6
Common
Fig. 2 Installation Example
Controller
rh Input
Common
24Vac 230Vac
Transformer f or controller
3 EN0C-0610 0398R3-MA
H7012A,B ROOM HUMIDITY / TEMPERATURE SENSOR
Mounting and Installation Advice:
= Mount these units at the inside wall of the room to be heated or air conditioned, away from doors, windows and heat sources.
= Do not mount in niches, book shelves, behind cabinets or curtains or where it could be exposed to solar radiation.
= Seal the conduit opening to avoid false measurement due to draught from the conduit.
= Provide sufficient air circulation.
Offset due to wire resistance per 10m distance from sensor to controller:
Type of wire Temperature offset
Pt 1000 BALCO 500 NTC
2
0.5mm
(AWG20)
1.0mm
(AWG17)
1.5mm
(AWG15)
0.18°C (0.324°F) 0.3°C (0.54°F)
2
0.09°C (0.162°F) 0.15°C (0.27°F) negligible
2
0.06°C (0.108°F) 0.1°C (0.1°F)
Wiring connection
NOTE
CAUTION
Use shielded wiring in areas with high EMI. Keep 15cm (5.9’’) minimum distance between sensor lines and 230Vac power lines.
Use two transformers: one for sensors and actuators and one for the controller (see Fig. 3).
Wiring run Maximum length
Sensor to controller 200m (660ft)
24V
1
24V
2 3 4 5 6
7
Pt 1000/NTC/ BALCO 500
0...1V
0...10V COM = 24V
8 9
10
Home and Building Control Products
Honeywell AG Böblinger Straβe 17 D-71101 Schönaich Phone: (49) 7031 63701 Fax: (49) 7031 637493 http://europe.hbc.honeywell.com
POWER SUPPLY
TEMPERATURE SENSOR
REL. HUMIDITY SENSOR
1 2 3 4 5 6 7 8 9 10
Fig. 3 Installation
Subject to change without notice. Printed in Germany Manufacturing location certi fied to
EN0C-0610 0398R3-MA
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