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GasAlertMax
User Manual
Calibration and Setting Alarm Setpoints
Guidelines
When calibrating the detector, adhere to the following
guidelines.
• Recommended gas mixture:
CO: 35 to 255 ppm balance N
2
H
2
S: 10 to 100 ppm balance N
2
LEL: 10 to 100% LEL or 0.5 to 5% vol. methane balance
air
O
2
: Clean air, 20.9%
• CG-Q58-4 calibration gas (four-gas mix) is available
from BW Technologies. Refer to the section
Replacement Parts and Accessories.
• Calibration accuracy is never better than the calibration
gas accuracy. BW Technologies recommends a
premium-grade calibration gas. Gases with NIST
(National Institute of Standards and Technology)
traceable accuracy will improve the validity of the
calibration. Do not use a gas cylinder beyond its
expiration date.
• Calibrate a new sensor before use. Install the sensor,
activate the detector, and allow the sensor to stabilize
before starting calibration (used: 60 seconds; new: 5
minutes).
• Calibrate the detector at least once every 180 days*,
depending on use and sensor exposure to poisons and
contaminants.
• Calibrate the detector if the ambient gas values varies at
start-up.
• It is best to calibrate the sensor before changing the
alarm setpoints.
*Refer to
Specifications.
32
- GasAlert Max 1
- Table of Contents 3
- Title Page 4
- List of Tables 7
- List of Figures 9
- GasAlertMax 10
- User Manual 10
- GasAlertMax Gas Detector 10
- Order Number Description 10
- Contacting BW Technologies 12
- GasAlertMax 13
- Cautions 14
- Getting Started 16
- Getting Started 17
- Item Description 17
- Table 4. Display Elements 18
- Figure 2. Display Elements 18
- Table 5. Pushbuttons 19
- Pushbutton Description 19
- Activating the Detector 20
- User Downloadable Datalogger 21
- 21
- Battery Test 23
- Pump Test 23
- Deactivating the Detector 24
- Confidence Beep 25
- User Options Menu 25
- User Options Menu 27
- German Language Option 33
- Table 6. Alarms 34
- Alarms 35
- Gas Exposures Computed 37
- Gas Alarm Setpoints 39
- Oxygen Alarm Setpoints 39
- Pump Failure Alarm 41
- Low Battery Alarm 41
- Automatic Shutdown Alarm 41
- Guidelines 42
- Diagnostics Protection 44
- Applying Gas to the Sensors 44
- Auto Span 47
- Setting the Alarm Setpoints 48
- Verification 49
- Pump Calibration 50
- Pump Calibration Pass 51
- Pump Calibration Fail 51
- Sampling Hose 52
- Datalog 52
- MultiMediaCard (MMC) 52
- Installing a New MMC 53
- Recovering Data Files 53
- Importing the Data File 54
- MultiMediaCard (MMC) 55
- Codes Explanation 56
- Example of a CSV File 57
- Description of Line Examples 58
- Maintenance 59
- Pump Filter 61
- Replacing/Adding a Sensor 61
- Troubleshooting 63
- Troubleshooting 65
- Model No. Description Qty 66
- Specifications 67
- Specifications 69
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