Humidity and Temperature Sensors for HVAC Type KL, PL, WL0 pages

Galltec Mess- und Regeltechnik GmbHt

D-71145 Bondorf . Germany t
Tel. +49 (0)7457-9453-0 . Fax +49 (0)7457-3758 t
E-Mail: sensoren@galltec.de . Internet:www.galltec-mela.det

MELA Sensortechnik GmbH

D-07987 Mohlsdorf-Teichwolframsdorf . Germany
Tel. +49(0)3661-62704-0 . Fax +49(0)3661-62704-20
E-mail:mela@melasensor.de . Internet: www.galltec-mela.de

Product info sheet no. C 2.6 - „Light Version“
Humidity/-temperature sensors

for use in air-conditioning systems, building services management systems
and ventilation technology
KL

PL
WL

Description
These sensors have been specially adapted to the needs
of the ventilation and air-conditioning sector.
They come in three series (the WL series for wall mounting,
the KL series for duct installation and the PL series with a
cable for suspension from any location). The KL and PL
series are equipped with gauze filters as standard. Other
filters are available on request.
Use of capacitive humidity sensor elements is a guarantee
of high long-term stability, resistance to dew formation, small
hysteresis and good dynamic performance.
User instructions
Install these sensors at a place where characteristic climatic
conditions occur. The wall-mounting sensors can be installed
on flush-mounted sockets on installation systems and directly onto the wall. Avoid installing them close to heaters
or windows or against outside walls.
The sensors with the connection cable can be suspended
directly from the cable.
In principle, the sensors do not require any maintenance.
However, the dynamic behaviour of the sensor may be affected if it is exposed to too much dust. In this case, clean
the sensor element by blowing the dust off. In the case of
the KL and PL series, clean the sensors by rinsing them
carefully in distilled water. Never touch the highly sensitive
sensor element.
Please consult the application instructions for the sensing elements (product info sheet no. A 1) or check with
the manufacturer for further information which you need to
bear in mind when using humidity sensors with capacitive
sensing elements.
Temperature with passive output
Measuring elements to be chosen: ..... NTC; PTC; KTY;
LMx35; Pt100; Pt1000; Ni1000; AD592; LM34; BALKO 1kΩ;
SILICON 2kΩ; SEMICONDUCTOR 559 mVDC @23°C
(73,4°F)
Thermistors @ 25°C (77°F) 1,8kΩ; 2,252kΩ; 3kΩ; 5kΩ;
10kΩ; 1,8kΩ (Type II; III, CSI); 20kΩ; 100kΩ
2) special versions available on request

Technichal Data
Humidity
measuring range............................................... 0...100%rh
sensing element .................................... capacitive FE09/4
accuracyt
at 23°C (73,4°F) ... ±3%RH (40...60%rh)
tt
at 23°C (73,4°F) ..... ±5%RH (otherwise)
working range ................................................... 15...90%rh
influence of temperature ........... typ. ± 0.2%RH per °C/°F
minimum air speed (only for PL,KL) .......... 1m/sec, 3ft/sec
Calibration ............................................................... 1 point
measuring medium ....... air, pressureless, non-aggressive
output .................................................. 0...10V or 4...20mA
Temperature with active output
measuring range............................. 0...50°C (32...122°F)2)
sensing element ....................................................... LM35
accuracy (10...40°C ; 50...104°F) ............... ±1 °C; ±1.8 °F
calibration .................................................. 1 point at 23°C
output .................................................. 0...10V or 4...20mA
Electrical Data
power supply:
t current output (KL) (PL) ............................... 12...24Vt
supply - 10 V DC
load ....
± 50 Ω
RL(Ω)=
0,02 A
t
t current output (WL) ......................................... 15...30V
supply - 14 V DC
t max. load .........
R (Ω)=
L

0,02 A

t voltage output ................................. 24V AC/DC ±10%
t voltage output (duct-version)
ttt
...... 15...30V DC/24V AC ±10%
load (voltage output only) .................................. >10kOhm
ambient temperature KL,PL ....-20...+80°C (-4...176°F)
tt
WL ....-20...+60°C (-4...140°F)
electromagnetic compatibility
t Emitted interference ............................. EN 55011 cl. B
t Noise immunity ......................................... EN 50082-2
sensor tube .......................... Ø20mm (Ø 0,79“) aluminium
housing ....................................................... ABS light grey
protective system WL, PL ........................................... IP20
tt
KL (housing) .... IP54, (sensor) ..... IP20

Type versions
Measured
variable
F
rel. humidity
K
r.h. + temp.

Output

WL series
wall

KL series
duct

PL series
rod-haped

0..10 V

FWL2/5

FKL2/5

FPL2/5

4...20 mA

FWL3/5

FKL3/5

FPL3/5

2 x 0..10 V

KWL2/5

KKL2/5

KPL2/5

2 x 4..20 mA

KWL3/5

KKL3/5

KPL3/5

T

0..10 V

TWL2/5

TKL2/5

TPL2/5

temperature

4..20 mA

TWL3/5

TKL3/5

TPL3/5

Pt100

TWL5/5

TKL5/5

TPL5/5

0..10 V + T

CWL2/5-X

CKL2/5-X

CPL2/5-X

4..20 mA + T

--

CKL3/5-X

CPL3/5-X

80g

330

120g

C
r.h. + temp.
passive

Weight approx.

This information is based on current knowledge and is intended to provide details of our products and their possible applications. It does not, therefore, act as a guarantee of specific
properties of the products described or of their suitability for a particular application. It is our experience that the equipment may be used across a broad spectrum of applications under
the most varied conditions and loads. We cannot appraise every individual case. Purchasers and/or users are responsible for checking the equipment for suitability for any particular
application. Any existing industrial rights of protection must be observed. The perfect quality of our products is guaranteed under our General Conditions of Sale. Issue : November
2012 C26_E. Subject to modifications.