Honeywell Midas User Manual

Midas
®
Gas Detector
7-21
7.4.4 Stimulate 4-20mA ‘4-20 mA’
1. Use the ‘s’ up or ‘t’ down buttons to select the
‘4-20’ submenu and press ‘3’ to accept.
2. The display shows ‘S 04’ indicating a 4 mA
output is being stimulated.
3. Use the ‘s’ up or ‘t’ down buttons to increase
or decrease current as desired in the range of
1 to 21 mA. Displayed as “S xx” = xx indicating
mA current being output.
4. Press ‘X’ to return to the ‘4-20’ submenu
selection.
5. Press ‘X’ to return to set-up, calibration and test
menu selection.
6. Press ‘X’ again to return to normal operation.
Caution
Proceeding with 20 mA stimulation may
cause unexpected alarm activation.
Only authorized operators should perform
this task!
This mode cancels itself in 5 minutes.

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