Honeywell Midas User Manual

Midas
®
Gas Detector
9-6
9.2 Reassembling the Detector
1. Align:
a. the PCB at the top rear of the chassis
with the PCB connector at the top of the
mounting bracket and
b. the two tubes at the bottom rear of the
chassis with the two tubes on the bottom of
the mounting bracket.
2. Slide the chassis backward on the mounting
bracket assembly so that the PCB, connector,
and tubes engage fully. Push the chassis
backward on the mounting bracket.
CAUTION: The LCD is fragile. Do not apply
pressure to its surface.
3. Tighten the retaining screws to secure the
chassis to the mounting bracket.
4. Insert the MIDAS-S-XHF sensor cartridge
into the sensor cartridge chamber (see
Diagram 9-8) and refer to the Sensor Cartridge
Installation Quick Start Guide (MIDAS-A-021).
Diagram 9-8. Reassembling the detector.
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cartridge
chassis
5. Set the power switch to the “on” position.
6. Refit the ventilated top by aligning the slots
on either side with the locating tabs on the
mounting bracket assembly, shown in Diagram
9-9. Push the cover horizontally until seated.
Diagram 9-9. Retting the top cover.
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slots (2)
tabs (2)

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