Honeywell H7012A Series User manual


EN0C-0610 0398R3-MA
H7012A,B
ROOM HUMIDITY SENSOR/
COMBINED ROOM HUMIDITY/TEMPERATURE SENSOR
FEATURES
•Pt 1000, BALCO 500 or 20kΩNTC 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 20kΩNTC 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
H7012A1009 -
H7012B1007 Pt 1000
H7012B1015 BALCO 500
H7012B1023 20kΩNTC
SPECIFICATION
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
PRODUCT DATA
Fig. 1 Room Humidity / Temperature Sensor
This product meets the requirements of CE

H7012A,B Room Humidity / Temperature Sensor
EN0C-0610 0398R3-MA 2
Temperature:
Temperature sensing
range 0...50°C (32...122°F)
Nominal value
Pt 1000 1000Ω@ 0°C
BALCO 500 500Ω@ 23.3°C
NTC 20kΩ@ 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
τ0.5 Pt 1000 =50s
τ0.5 Balco 500 =140s
τ0.5 NTC =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 183Ω
10V range 274Ω
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%
Response time τ0.5=20s
Control systems Temperature Humidity
Pt 1000 20kΩNTC 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 XX
MicroniK 100 X X
MicroniK 100 ”NEW”
R7420B1036/R7420F1045 XXX
MicroniK 200 X X X X

H7012A,B Room Humidity / Temperature Sensor
3 EN0C-0610 0398R3-MA
DIMENSIONS
5 mounting holes 4mm (0.16) dia.
for 3 (2) screws 3.5mm (0.14) dia.
mounted in positions 1 (preferred) or 2.
11
1
2
1
2
(0.43)
1,2
30
(1.18)
60
(2.36)
107
(4.21)
60 (2.36)
34
(1.34)
20
(0.79)
130
(5.12)
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

80 (3.15)
Dimensions in mm and (inch)
Fig. 2 Dimensions
INSTALLATION
Transformer for
Sensor
Common
0...10V
Common
rh Input
Controller
230Vac 24Vac 24Vac 230Vac
controller
Transformer for
sensors and actuators
1
27
5 / 6
0...1V/
Fig. 3 Installation Example

H7012A,B Room Humidity / Temperature Sensor

Honeywell Regelsysteme GmbH
Honeywellstr. 2-6
D-63477 Maintal
Tel. [phone]
Fax [phone]
Subject to change without notice. Printed in Germany.
EN0C-0610 0398R3-MA
DIN
EN ISO 9001
Manufacturing location is certified according to
Wiring run Maximum length
Sensor to controller 200m (660ft)
Offset due to wire resistance per 10m distance from sensor
to controller:
Type of wire Temperature offset
Pt 1000 BALCO 500 NTC
0.5mm2
(AWG20) 0.18°C (0.324°F) 0.3°C (0.54°F)
1.0mm2
(AWG17) 0.09°C (0.162°F) 0.15°C (0.27°F) negligible
1.5mm2
(AWG15) 0.06°C (0.108°F) 0.1°C (0.1°F)
CAUTION
NOTE
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).
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.
Wiring connection
1
2
3
4
5
6
TEMPERATURE SENSOR
POWER SUPPLY
REL. HUMIDITY SENSOR
8
9
10
7
24V
Pt 1000/NTC/
BALCO 500
0...1V
0...10V
24V
COM = 24V
Fig. 4 Installation
1
2 3 4 5 6 7 8 9 10