RKI Instruments SDM-2012 Standalone Configuration - Manual (Page 31)

Setting the Operational Parameters in Edit Mode • 26
Setting the Gas Inlet for H
2
S (GX-2012 Only)
If you are using a separate calibration cylinder for the H
2
S channel, you may set
which gas inlet that cylinder will use. RKI Instruments, Inc. recommends using a 4-
gas mix cylinder that contains H
2
S and setting this parameter to GAS 1 (factory
setting).
To change the gas inlet for the H
2
S channel:
1. Turn on the SDM-2012 with a GX-2012 and establish a connection between
them as described above in "Turning on the SDM-2012 with an Instrument".
The GX-2012 will display the home screen.
2. Press and hold the EDIT ENTER button for 2 seconds. The GX-2012 will
display the Edit Mode screen.
3. Press and release the EDIT ENTER button. The GX-2012 will alternate
between the following screens that show the current gas inlet for H
2
S along
with the current tested sensors setting. For instructions to change the tested
sensors setting, see “Updating the Tested Sensors Setting” on page 28.
50
12.0
50
25.0
%LEL
%
ppm
ppm
CH
4
O
2
TRANSMIT
CO
H
2
S
B / C / E
GAS 1
Std
EDIT
H2S
GAS
EDIT