INSTRUCTION
i
Read this instruction before installation
and wiring of the product
HTRT2500(-420)
1
HTRT2500(-420)
Duct mounted humidity/temperature
transmitter
HTRT2500(-420) are wall mounted humidity and temperature
transmitters for relative humidity and temperature measurement in air
handling systems. Available with 0...10 V DC (HTRT2500) or
4...20 mA (HTRT2500-420) output signal, and passive PT1000 signal.
Installation
Mount the transmitter on a wall. It should be located where the air can
circulate freely. Avoid locations where it can be exposed to distur-
bances that may influence the readings, i.e. near doors, radiators, on
sunlit walls etc.
When mounted in contaminated environments the transmitter’s mem-
brane filter should be exchanged for a sintered brass filter.
Wiring
Connect supply voltage and output signals according to the diagram
for the unit being installed.
Connect passive PT1000 signal either between terminals 6-7 or 5-8.
Technical data
Supply voltage:
HTRT2500: 24 V AC ±20 % or 15...35 V DC
HTRT2500-420: 20...35 V DC (R
L
< 500 Ω), 11...35 V DC (R
L
< 50 Ω)
Output signals:
Humidity: 0...10 V DC (4...20 mA), corresponding to 0...100 % RH
Measuring range: 10...95 % RH
Accuracy at 20°C: ±2.5 %
Temperature range: 0...10 V DC (4...20 mA), corresponding to 0...50°C.
Accuracy at 20°C: ±0,3 K.
PT1000 (
DIN class A, according to IEC751
)
External load impedance:
HTRT2500: Min. 10 kΩ.
HTRT2500-420: Max. 500 Ω.
EMC emissions & immunity standards
This product conforms with the requirements of European EMC
standards CENELEC EN61326-1 and EN61326-2-3 and carries the
CE mark.
RoHS
This product conforms to the Directive 2011/65/EU of the European
Parliament and of the Council.
Contact
AB Regin, Box 116, 428 22 Kållered, Sweden
Tel: +46 31 720 02 00, Fax: +46 31 720 02 50
www.regin.se, [email protected]
10560C
AUG 17
EN
34
51
86
12
85
35
Ø16
V+
GND
RH 0...10 V DC
2
3
Temp. 0...10 V DC
HTRT2500
V+
Temp. 4...20 mA
HTRT2500-420
RH 4...20 mA
1
1
2
3
4
7
6
8
5