Gas Control Panel ME 20

The gas control panel ME 20 is a gas monitoring and evaluation unit for a large number of gas compounds. Depending on the version, up to 200 gas sensors can be managed with the gas control panel.

The communication between gas sensors ME 1250 and the gas control panel takes place via a Modbus protocol based on RS485. The bus communication allows easy wiring of the sensors in a bus, tree or star topology. However, the gas control panel also processes analogue input signals 4…20 mA and is therefore compatible with a large number of sensors. The slave version of the gas control panel allows a high level of scalability with a network of several panels.

Depending on the configuration, various actions are triggered by evaluating the gas readings. The proportional outputs are ideally suited for variable control of ventilation. With the built-in switching relay, valves are closed and signal transmitters are activated. The other digital outputs offer easy forwarding of the alarms to external transmission devices, fire alarm systems and control systems.

The software of the gas control panel allows the configuration of several zones. Thanks to control functions, an individual logic can be programmed with a variety of options for any application.

The graphic OLED display shows the gas readings and allows for easy operation via 5 buttons. 6 LEDs show the operating status and the pending alarms at a glance.

The gas control panel ME 20 is easy to install with its compact wall-mounted casing.

The integrated web server enables location-independent access to the gas control panel. Get full access from anywhere; whether from the office, the control center or the smartphone.

The optional UPS module enables the emergency power supply of the gas control panel by connecting batteries.

Additional features such as event memory, alarm suppression, proportional controller, intelligent ventilation interval control with dehumidification program and a real-time clock make the gas control panel even more interesting.

The gas control panel is a Swiss quality product and is developed and produced by Müller-Elektronik AG. We would like to invite you to explore the many possibilities with this product.

Technical Specifications

Operating voltage	230 VAC	24 VDC optional
Power consumption	max. 60 W
Device input current	max. 4.5 A
Inputs digital	8 x 24 VDC	Lo < 6 V, Hi > 10 V, max. 30 V
Inputs analogue	Number according to version 4…20 mA	Burden: < 150 Ω Load: max. 750 mA per 4 sensors
Bus	Modbus RS485 Load: max. 1 x 2.1 A on connectors	Topology: bus, star, tree U72M 1x4x0.6 mm shielded Bus length: max. 1,000 m
Outputs relay	4 (3x alarms, 1x technical error)	AC1 8.0 A, 250 V AC3 0.5 kW min. 10 V, 10 mA
Outputs digital	4x 500 mA or 2 x 1,000 mA 2 x 1,500 mA
Connectors	max. 1.5 mm²
Display	OLED yellow	Graphical 128 x 64 pixels
Periodic ventilation control	Interval and duration	Real time clock
Event memory	200 entries
Ethernet / Webserver	10 / 100 Mbit/s	Full web control
Ambient temperature	-10…+50 °C
Humidity	20…90 % rF	Non-condensing
Casing	ABS plastic
Dimensions WxHxD	200 x 180 x 110 mm
Installation	Wall-mounted casing
Weight	1,400 g
EU conformity	CE mark including EMC test

Versions

Article code	Max. number of sensors	Connectors for analogue sensors
ME20-BUS-04	4	0
ME20-BUS-08	8	0
ME20-BUS	176 or 88 x 2 channel	0
ME20-04	4	4
ME20-08	8	8
ME20	176 or 88 x 2 channel	8

Optional Modules

Article code	Module	Description
ME15-0…10V	Plug-in module	4 outputs analogue 0…10 V Proportional controller for EC ventilators
ME15-0…20	Plug-in module	4 outputs analogue 0 / 4…20 mA Proportional controller for frequency converters
ME15-Digital IO	Plug-in module	4 additional inputs digital 24 VDC or 4 additional outputs digital 24 VDC, 500 mA
ME15-USV	Plug-in module	UPS module 24 VDC stabilized Charging current: 10…1,500 mA Discharge current: max. 2.5 A / 3.0 A during 15 min Logger battery voltage: 80 min