Rki-instruments GX-2012 Manual Manual do Utilizador Página 53
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GX-2012 Operator’s Manual Display Mode • 45
The lunch break feature enables the GX-2012 to remember peak readings
when it is turned off so it can continue them when it is turned on again. See
“Turning On the GX-2012, Normal Mode Only” on page 19. To reset the
peak readings during operation, press and hold the RESET SILENCE button
for a few seconds while in the peak screen.
STEL Screen
The STEL Screen displays the short-term exposure limit (STEL) readings for
CO and H
2
S only. The STEL reading is the average reading during the last 15
minutes.
TWA Screen
The TWA Screen displays the time-weighted average (TWA) readings for CO
and H
2
S only.
The TWA reading is the average reading during the last 8 hours. If 8 hours
have not elapsed since the last time the TWA reading was cleared, the
average is still calculated over 8 hours. The missing time is assigned a 0
value for readings.
0
20.9
0
0.0
%LEL
%
ppm
ppm
CH4
O2
PEAK
CO
H2S
PEAK
0
0.0
ppm
ppm
STEL
CO
H2S
0
0.0
ppm
ppm
TWA
CO
H2S
- Operator’s Manual 1
- GX-2012 Operator’s Manual 2
- Warranty 3
- Table of Contents 4
- Chapter 1: Introduction 9
- About the GX-2012 9
- Specifications 11
- About this Manual 12
- Chapter 2: Description 13
- Instrument Description 13
- Combustible Gas Sensors 15
- Oxygen Sensor 15
- CO and H 15
- S Sensors 15
- Hollow Side 16
- Dummy Sensor 16
- Top Flat 16
- Button Function(s) 17
- Vibrator 18
- Batteries 18
- Flow Chamber 19
- Sensors and Filters 19
- Inlet Filter Holder 19
- Sample Hose 20
- Optional Accessories 21
- End Plugged 24
- Purge Tee Fitting 26
- External Dilution Fitting 26
- Start Up, Normal Mode 27
- With All Modes Active 33
- AIr 35
- HOLD AIR 35
- Measuring Mode, Normal 36
- Operation 36
- Using the Purge Tee Fitting 37
- Using the Dilution Fitting 38
- Combustible Gas Detection 39
- Snap Log Mode 41
- Measuring Mode, Alarms 44
- Responding to Alarms 47
- Responding to Battery Alarms 48
- 000 MPU failure 49
- 010 RAM failure 49
- 021 EEPROM failure 49
- 031 FLASH memory failure 49
- Inert Mode 50
- Display Mode 51
- HC 52
- SEL 52
- HC RANGE 52
- STEL Screen 53
- TWA Screen 53
- Alarm Points Screen 54
- Operation Time Screen 55
- Date/Time Screen 56
- Remaining Log Time Screen 56
- Clear Data Logger Screens 57
- Pump OFF Screen 58
- User ID Screen 59
- Station ID Screen 60
- Snap Logging Screen 61
- CO 62
- H2S 62
- Peak Bar Select Screen 63
- SDM-2012 64
- Data Logging 64
- Calibration Mode 65
- Bump Testing the GX-2012 74
- Start Up, Bar Hole Mode 81
- 0 87
- 20.9 87
- Bar Hole Testing 88
- Start Up, Leak Check Mode 92
- Leak Testing 99
- Overscale Conditions 100
- LEAK CK MODE 101
- Peak Hold Mode 102
- 103
- Chapter 6: Maintenance Mode 108
- Overview 108
- Using Maintenance Mode 109
- O2 115
- CO 115
- H2S 115
- Performing a Bump Test 119
- Turning Portuguese On or Off 146
- Channel Display Setting 147
- Exiting Maintenance Mode 150
- Troubleshooting 151
- Symptoms 152
- Probable 152
- Recommended Action 152
- OPEN CLOSE 154
- Slide Latch This Way 155
- Charge LED 156
- Power Supply Jack 156
- AC Power Supply 156
- DC Powered Charging Station 157
- Red Charging LED 158
- AC Powered Charging Station 159
- Battery Pack 161
- LEL Filter 162
- CO Filter 162
- Figure 27: Replacing a Sensor 163
- Part Number Description 166
- Sample Bag 169
- Preparing for Calibration or 170
- Bump Testing 170
- Calibrating the GX-2012 172
- Parts List 185
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