MF420-H
The measuring systems of the product family MF420-C, with a semiconductor sensor, determine the concentration of explosive gases and vapors in air mixtures. The concentration is given out via a 4 - 20 mA interface for further processing. The sensor is characterized by its robustness towards sensor poisons and its long life cycle. The measuring range is 0 - 50% LEL.
In combination with our limit monitors (GWZ) gas measurement systems for detection of explosive gases and vapors in ambient air, like eg. storage facilities, can be set up.
The measuring ranges depend on the measured gas or vapor. For a table of ranges please refer to the product assortment. Other gases, vapors, and concentrations are also possible on request. The device complies with the generic standards EN 61000-6-2 and EN 61000-6-3 and thus the EMC Directive 2004/108/EC. The device is delivered already calibrated. The maintenance cycle must / should correspond to the given safety requirements. We recommend at least a semi-annual inspection of the equipment by qualified personnel. You can also use our service. For more details, please refer to the technical data or ask our contact person.
Other gases & vapors on request.
Measuring Ranges
Certifications
Maintenance and Service
Product Name Product Features Product Code
MF420-H
Methane
Measuring Range 0 - 50% LELG2C0-H11JU-A100
MF420-H
Propane
Measuring Range 0 - 50% LELG2C0-H12JU-A100
MF420-H
Butane
Measuring Range 0 - 50% LELG2C0-H03JU-A100
MF420-H
LPG
Measuring Range 0 - 50% LELG2C0-H50JU-A100
MF420-H
R134a
Measuring Range 0 - 1000 ppmG2C0-H60MP-A100
MF420-H
R404a
Measuring Range 0 - 1000 ppmG2C0-H62MP-A100
MF420-H
R410a
Measuring Range 0 - 1000 ppmG2C0-H61MP-A100
Principle of Measurement
semiconductor
Power Supply
voltage
24 V DC ± 5%
current
approx. 100 mA
connectors
3-pole screw terminal
24 V DC ±5% and 4..20 mA
Ambient temperature
-10°C to +50°C
Air pressure
900 hPa to 1100 hPa
Permissible Humidity
15 to 95% relative humidity
non condensing
Output
4 - 20 mA
Housing
Alloy, red
Protection class
IP 54
Weight
approx. 500 g
Dimensions (L x W x H)
90 x 85 x 65 mm
Connecting Cable
3-wire shielded cable
Recommended cable cross-section min. 1.5 mm2
Pin Assignment:
Product Name Product Features Product Code
Replacement Sensor Set
Consists of:
- Replacement sensor
- Sensor holder
- Sinter
- Sealon request
Calibration Set
Consists of:
- Test gas cap
- O-ringon request