Regin HTWT10 Instructions

EN INSTRUCTION
HTWT10(-420)
IN20076 REV. A, 2022-09-27
C C a a u u t t i i o o n n ! ! Read and understand the instruction before using the product.
C C a a u u t t i i o o n n ! ! Ensure that the installation complies with local safety
regulations.
C C a a u u t t i i o o n n ! ! Before installation or maintenance, the power supply should first
be disconnected. Installation or maintenance of this unit should only be
carried out by qualified personnel. The manufacturer is not responsible
for any eventual damage or injury caused by inadequate skills during instal-
lation, or through removal of or deactivation of any security devices.
Function
HTWT10 is a wall mounted humidity and temperature transmitter for
measuring relative humidity and temperature in air handling systems. It
can also be mounted outdoors if equipped with a weather guard.
Available with 0...10 V DC or 4...20 mA output signal.
The measurement signal is transmitted via the built-in electronics to an
analogue output signal. The transmitter has high accuracy (±2 % RH)
and excellent long-term stability. The sensor element reacts quickly to
changes in humidity and low hysteresis. It can withstand up to 100 %
RH (condensing) without accuracy being affected and is highly resistant
to polluted environments.
Combination sensor
The transmitter has a temperature sensor which provides an analogue
output signal via built-in electronics.
Filter
The transmitter sensor element is protected by a membrane filter. This
can be changed to a stainless steel filter (HA010103), which is
recommended when operating in an environment with a high degree of
pollution.
Supply voltage
The transmitter uses a supply voltage of either 15...29 V AC or 15...35
V DC. The transmitter will automatically detect and adapt to the
connected supply voltage. Transmitters with 4...20 mA output signal
must be supplied with 20...30 V DC and connected via a two-wire
connection.
Technical Data
G G e e n n e e r r a a l l
Power 15 mA (0...10 V output signal)
consumption
Output load Max 1 mA (0...10 V), max. 500 Ω (4...20 mA)
Cable connection Disconnectable terminal strips
Protection class IP65
Weight 0.25 kg
Accuracy ±0.2 K at 20°C
Storage -40...+60°C
temperature
Load impedance
Min. 10 kΩ
HTWT10
Max. 500 Ω
HTWT10
H H u u m m i i d d i i t t y y
Sensor element Capacitive thin-film element
Sensor element Membrane filter. Sintred filter in stainless steel on request.
protection
Working range 0...100 % RH
Output signal 0...10 V DC (4...20 mA) corresponding to 0...100 % RH
Accuracy ±2 % RH (0...90 % RH), ±3 % RH (90...100 % RH)
Hysteresis Less than 2 % RH
Temperature Less than ±0.03 % RH/ °C (at 45 % RH )
dependency
T T e e m m p p e e r r a a t t u u r r e e
Sensor element PT1000 (tolerance according to DIN B EN60751)
Measurement -40...+60°C
range
HTWT10(-420)
Output signal 0...10 V DC (4...20 mA) corresponding to -20...+80°C
Accuracy ±0.2 K at 20°C
Temperature .....
dependency
Installation
Mount the transmitter on a wall. When mounted indoors it should be
located where the air can circulate freely. Avoid locations where it can
be exposed to disturbances that may influence the readings, i.e. near
doors, radiators, on sunlit walls etc. When mounted outdoors the
transmitter should be mounted with the stem pointing up and be
equipped with the HVS weather guard (available as an accessory). When
mounted in contaminated environments the transmitter's membrane
filter should be exchanged for a sintered stainless steel filter
(HA010103).
Wiring
Connect supply voltage and output signals according to the diagram for
the unit being installed.
HTWT10
V+ 1
0 2
RH 0...10 V DC 3
Temp. 0...10 V DC 4 Temp. 4...20 mA
Supply voltage:
HTWT10: 15...29 V AC or 15...35 V DC HTWT10-420: 20...30 V DC
Output signals:
Humidity: 0...10 V DC (4...20 mA) corresponding to 0...100 % RH
Accuracy: ±2 % RH (0...90 % RH), ±3 % RH (90...100 % RH)
Temperature: 0...10 V DC (4...20 mA) corresponding to -20...+80°C
Accuracy at 20°C: ±0.2 K
External load impedance:
HTWT10: Min. 10 kΩ HTWT10-420: Max. 500 Ω
RoHS
This product conforms to the Directive 2011/65/EU of the European
Parliament and of the Council.
HTWT10-420
V+ 1
2
RH 4...20 mA
3
1 (5)