VC /110 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 4.4
Humidity/-temperature sensors

special sensors for use in gases containing
„ammonia“
Description

VC series resistant to ammonia

Technical data
Humidity
measuring range .............................................. 0...100%rh
accuracy (MB 20...90% rh at 15...40°C) ................. ±3% rh
accuracy < 20% rh and > 90% rh ........................... ±5% rh
t at <15°C, >40°C ............................. <0.1%/K additional
response time (at calm air) ...................................... < 20 s
Temperature
measuring element (ref. DIN EN 60751) ......... Pt 100 cl. B
measuring range ............................................. -30...+70°C
accuracy
t
0...1V (-27...70°C) ..................................... ±0,2 K
t0...10V (-29...70°C) ................................... ±0,2 K
t
4...20mA .................................................... ±0,3 K
t at <10°C, >40°C ......................... ±0.007K/K additional
Other data
ambient temperature ....................................... -40...+80°C
degree of protection sensor/electronics ........... IP 30/IP 65
operating voltage:
t
current output ................................... 12...30V DC
t
voltage output (0...10V) ................... 15...30V DC
t
voltage output (0...1V) ....................... 6...30V DC
load resistance (0...10V, 0...1V) .................... ≥10kΩ/≥2 kΩ
load (current-output) .................................. acc. diagramm
power consumption
t
0...10V, 2 x 0...1V ......................................< 5 mA
t
0...1V ......................................................... <1 mA
minimum air speed
t
2 x 4...20mA ........................................... ≥1.5 m/s
t
4...20 mA, 2 x 0...10 V .............................. ≥1 m/s
t
0...10V, 2 x 0...1V .................................. ≥0.5 m/s
self-heating coefficient Pt100 (v=2 m/s in air) .... 0.2 K/mW
material .................................................... high-grade steel
t
directive about electromagnetic compatibility
2004/108/EG
t
DIN EN 61326-1 ............................... issue 07/13
t
DIN EN 61326-2-3 ........................... issue 07/13

MELA®-Humidity/-temperature sensors in the VCx/11
series are compact sensors in a rod-type design. They
are available with a 1.5 m connecting cable for measuring
the relative humidity or the relative humidity and the
temperature in air and other gases. The sensor can be
used in areas contaminated with a variety of pollutants (e.g.
ammonia), without damaging the element or falsifying its
measuring value. However the sensor is not resistant to all
harmful substances, you are recommended to contact the
manufacturer in special cases.
All the sensors in the series are equipped with ZE 26-type
membrane filters. For special applications other filters can
be used as well (product info sheet no. F 5.1).
Use of capacitive MELA®-humidity sensor elements is a
guarantee of:
t
t
t
t
t

- high long-term stability
- almost linear characteristic curve
- good dynamic performance
- resistance to dew formation
- small hysteresis.

Type versions
Measured
variable
F
rel. humidity

Output
0...1 V

Series VC
with cable
FVC 1/11

0...10 V

FVC 2/11

4...20 mA

FVC 3/11

C
0...1 V Pt100
rel. humidity
0...10 V Pt100
+
Pt100
4...20mA Pt100

CVC 1/11

K
rel. humidity
+
temperature

2 x 0...1 V

KVC 1/11

2 x 0...10 V

KVC 2/11

2 x 4...20mA

KVC 3/11

weight approx.

CVC 2/11
CVC 3/11

150 g

special versions available on request

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: December
2014