Honeywell Midas User Manual

Midas
®
Gas Detector
6-8
6.3.2 Calibration Menu Overview ‘
CAL’
The calibration menu allows calibration of the
detector zero, span, flow and 4-20 mA. The menu
is simply navigated using the ‘s’ up and ‘t’ down
buttons to select the required submenu and then
using ‘3’ accept button to enter that submenu. The
‘s’ up and ‘t’ down buttons are used to make any
changes to a selected setting and are confirmed
using the ‘3’ accept button. The ‘X’ cancel button
can be used to exit the submenu and allow selection
of a different submenu, or can be pressed again to
exit to the main set-up, calibration and test menu.
Pressing the ‘X’ cancel button again returns the
detector to normal operating mode.
The table below shows an overview of the
calibration submenus and how they are navigated.
For a detailed step-by-step instruction of how to
change the detector calibration settings refer to
Section 7.2.

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