Honeywell Midas, User Manual

Page: 52 / 160

Midas
®
Gas Detector
6-10
6.3.3 Test Menu Overview ‘ tESt’
The test menu is used to test the detector gas
reading using bump test gas, and for simulation of
alarm and fault display and output operation. The
test menu also contains the detector Inhibit facility.
Use the ‘
s
’ up and ‘
t
’ down buttons to select either
bump test or alarm/fault test. Press the ‘
3
’ accept
button to enter that submenu.
The table below shows an overview of the
test submenus and how they are navigated.
For a detailed step-by-step instruction of how to test
the detector operation refer to Section 7.2.
Note
In bump test mode, the Modbus/TCP outputs
are not inhibited. Only the 4-20mA and alarm
outputs are inhibited.
The bump gas test is a functional check only.
Consult local guidelines for recommended
best practices. Bump test concentrations
recommended in Appendix B are calculated
to generate a minimum first alarm level
response.
Table 6-5. Test Submenu
Display Screen 1 Screen 2 Screen 3 Screen 4
Bump
bUmP
Apply bump
test gas and
display shows
measured gas
concentration
with all alarm
outputs
inhibited
Press ‘X’ to
exit to test
menu
Alarm/
fault
SIm
Display shows
‘Sim’ and
the A1
‘
s
’
symbol.
4 states:
s
: alm 1
: alm 2
flashing:
inst flt
: maint flt
Display
shows
‘SuRE’.
Display
flashes ‘SIm’
and simulates
the selected
A1, A2 or
Fault display
and output.
Press ‘X’
to exit
and select
another
simulation or
‘X’ again to
return to test
submenu
Inhibit
Inh
Press
s
or
t
to select ALm,
ALm-Ft, ALL
or nonE inhibit
state
Set inhibit
timeout
period
UPdt is
displayed and
unit enters
selected
inhibit state.
Display
returns to
submenu
4-20 mA
4-20
mA
Display shows
‘S XX’ where
XX is the mA
value
Press
s
or
t
for the desired
mA output