GX-3R Pro Operator’s Manual Chapter 3: Operation • 28
d. If Password Protection is turned On (factory setting is Off) using the SDM-3R PC
program, a user-set password is required to perform an auto zero. When the password
screen appears, adjust each digit with the AIR button and press and release the POWER
MODE button to move on to the next digit. Once the password is entered, the instrument
performs the auto zero.
11. The combustible gas sensor actually contains 2 separate sensors: a standard catalytic sensor
and a backup, poison-resistant sensor that is resistant to sensor poisons like silicone. A
LIMITED HC GAS LIST alarm indicates that the standard sensor has a reduced output,
possibly due to one or more sensor poisons in the environment, and that the poison-resistant
sensor is being used to provide gas readings. The poison-resistant sensor has a limited list of
detectable gases. The table shown on page 48 shows which gases can and cannot be detected
after receiving a LIMITED HC GAS LIST alarm.
If your application requires detection of a gas still detectable after a LIMITED HC GAS
LIST alarm (like methane or isobutane), there is no need to replace the combustible gas
sensor.
However, if your application requires detection of a gas not detectable after a LIMITED
HC GAS LIST alarm (like methanol or ethanol), you must replace the combustible gas
sensor as soon as possible.
The following screen displays, the LEDs flash, and the instrument beeps.
Press and release POWER MODE to confirm the limited gas list and continue to
Measuring Mode.
12. At the end of the 45 second warmup, the GX-3R Pro begins monitoring for gas in Measuring
Mode. The Measuring Mode Screen displays the current gas reading for each target gas.
7:49
20.9 0.00
O2 % CO2 vol%
0 0 0.0
CH4 %LEL CO ppm H2S ppm
To Next Page
Loading...
