T20.0.0X.6C-07
page 1 of 4
Operating Manual
Relative Air Humidity And Temperature Transducer
GHTU ... MP
as of V2.6
Specification:
Measuring range:
relative air humidity:
0.0...100.0 % rel. humidity (temperature compensated)
temperature:
-40.0...120.0 °C or -40.0...248 °F
Rec. range of application:
standard:
20,0...80,0 %RH
option high humidity:
5,0...95,0 %RH
Accuracy:
(at nominal temperature = 25°C)
Display
relative air humidity:
±1% linearity, 2% hysteresis
(at recommended range of application
)
temperature:
±0.4% of measured value ±0.2°C
Add. output signal:
±0.2 % FS
Sensors:
relative air humidity:
cap. polymer sensor
temperature: Pt1000
Temperature compensation:
automatic
Min-/Max-Value Memory:
Min and max measured values are stored
Output signals:
refer to type plate, both freely scaleable
Scaling:
By entering display values for 4mA (resp. 0V)
and 20mA (resp. 1V/10V) output
Connection:
4 - 20 mA (2-wire) – output signals are
electrically isolated from each other
for option AV01, AV10:
0 - 1 (10) V (3-wire) – output signals are not electrically isolated from each other
for option AV01G, AV10G:
0 - 1 (10) V (3- resp. 4-wire) – output signals are electrically isolated from each other
Auxiliary energy:
(supply voltage, each output)
Uv = 12 - 30 V DC (4-20mA)
Uv = 12 - 30 V DC, max. 10mA (0-1V)
Uv = 18 - 30 V DC, max. 10mA (0-10V)
or refer to type plate
Reverse voltage protection:
50V permanent
Perm. impedance
(at 4-20mA)
:
R
A
(Ohm) < ( (Uv - 12V) / 0.02A )
Example: for Uv = 18V:
R
A
< (18V - 12V) / 0.02A => R
A
< 300 Ohm
Permissible load
(at 0-...V)
:
R
L
(Ohm) > 3000 Ohm
Adjusting:
via keypress by input of offset and scale (humidity and temperature)
Display:
approx. 10 mm high, 4-digit LCD-display
Ambient conditions for electronics:
Nominal temperature:
25°C
Operating temperature:
-25 to 50°C
(sensor head and tube: -40 to 100°C – for short time up to 120°C)
Relative humidity:
0 to 95 %RH (non-condensing)
Storage temperature:
-25 to 70°C
Housing:
ABS (IP65)
Dimensions:
82 x 80 x 55 mm (without elbow-type plug and sensor tube)
Mounting:
With holes for wall mounting (in housing - accessible after cover has been removed).
Mounting distance:
50 x 70mm, max. shaft diameter of mounting screws is 4 mm.
Electrical connection:
elbow-type plug conforming to DIN 43650 (IP65),
max. wire cross section: 1.5 mm², wire/cable diameter from 4.5 to 7 mm
EMC:
The device corresponds to the essential protection ratings established in the Regulations of the Council for the
Approximation of Legislation for the member countries regarding electromagnetic compatibility (89/336/EWG). In
accordance with EA1 +A2 (appendix A, class B), additional errors: < 1% FS.
When connecting long leads adequate measures against voltage surges have to be taken.
GREISINGER
electronic GmbH
Working area of humidity sensor:
