Honeywell Midas User Manual

Midas
®
Gas Detector
2-5
Note
Sensor warranty is void if the sensor cartridge
is opened by unauthorized user.
Diagram 2-6. Biased Sensor.
2.4 Cover
The standard cover provides environmental
protection and fits over the top, front and sides
of the main chassis. The front panel has viewing
windows for the LCD, LEDs and sensor cartridge
fitted in the sensor cartridge chamber. Underneath
the LCD window are the 4 push buttons used for
navigating the detector’s software menus. The cover
is easily removed to allow access to the chassis by
unscrewing the thumbscrew on the front panel and
pulling the cover forwards off the main chassis.
Midas units fitted with a pyrolyzer utilize a ventilated
cover due to the high temperatures generated by
the pyrolyzer unit (See Diagram 2-7)
Diagram 2-7. Midas
®
covers
LED Windows
LCD Window
Pushbuttons
Sensor Cartridge
viewing window
Thumbscrew
Standard Cover
LED Windows
LCD Window
Pushbuttons
Sensor Cartridge
viewing window
Thumbscrew
Ventilated Pyrolyzer Cover

Honeywell Midas Specifications

General

Power Supply	24 VDC
Detection Technology	Electrochemical, Infrared
Sampling Method	Diffusion
Display	LCD
Communication	Modbus RTU, 4-20mA
Operating Temperature	-20°C to +50°C
Humidity Range	0% to 95% RH (non-condensing)
Target Gas	Multiple gases
Response Time	< 30 seconds
Operating Humidity	0% to 95% RH (non-condensing)
Outputs	4-20mA
Protection Rating	IP66
Certifications	ATEX, UL, CSA
Detection Gases	Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Methane (CH4), and others