| 
 | Table of Contents | 
 | 
| 1.0 Introduction | 1 | |
| 1.1 | Warnings and Cautions | 1 | 
| 1.2 Unpack | 1 | |
| 1.3 | Check Order | 2 | 
| 1.4 | Serial Numbers | 2 | 
| 2.0 TARGET Features | 2 | |
| 2.1 | Sensors | 2 | 
| 2.2 | Other features include: | 2 | 
| 2.4 | Locations and Data logging | 4 | 
| 3.0 Instrument Operation | 4 | |
| 3.1 | Turning the Instrument On and Off | 4 | 
| 3.1.1Turning the TARGET On | 4 | |
| 3.1.2 Turning the TARGET Off | 4 | |
| 3.2 | Charging the Battery | 5 | 
| 3.3 | Display Backlight | 6 | 
| 3.4 | Alarms | 6 | 
| 3.4.1 Instantaneous Gas Alarm | 6 | |
| 3.4.2 STEL/TWA Alarms | 6 | |
| 3.4.3  | 7 | |
| 3.4.4 Low Battery | 7 | |
| 3.4.5 Fault | 7 | |
| 3.5  | 7 | |
| 3.5.1  | 7 | |
| 3.5.2 Calibration Status | 8 | |
| 3.5.3 Combustible Gas Display | 8 | |
| 3.5.4 Locations | 8 | |
| 3.5.5 Internal Sampling Pump | 9 | |
| 4.0 Basic User Operation | 10 | |
| 4.1 | Date/Time/Battery Information | 10 | 
| 4.2 | Alarms Values | 10 | 
| 5.0 Advanced User Operation | 11 | |
| 5.1 | Date/Time/Battery Information | 11 | 
| 5.2 | Alarms Values | 11 | 
| 5.3 Min/Max Values | 11 | |
| 5.4 TWA Values | 11 | |
| 5.5 STEL Values | 11 | |
| 6.0 Maintenance Operations | 12 | |
| 6.1 Recommendations | 12 | |
| 6.2 | Standard Maintenance Menu | 12 | 
| 6.3 | Calibration | 12 | 
| 6.3.1 Calibration Menu | 12 | |
| 6.3.2 Zero Adjust | 13 | |
| 6.3.3 Applying Span Gas | 13 | |
| 6.4 | Advanced Maintenance Menu, Software 4.94 version | 15 | 
| 6.4.1 Calibration | 15 | |
| 6.4.2 Setting Instantaneous Alarms | 15 | |
| 6.4.3 Enable Sensors | 16 | |
| 6.4.4 Set Clock/Chirp | 16 | |
| 6.4.5 Set Password | 16 | |
| 6.4.6 Set Battery Type | 17 | |
| 6.4.7 Set Operation Menu | 17 | |
| 6.4.8 Internal Pump Calibration | 17 | |
| 6.4a Advanced Maintenance Menu, Software 6.0 version | 18 | |
| 6.4a.1 Calibration | 18 | |
| 6.4a.2 Setting Instantaneous Alarms | 18 | |
| 6.4a.3 Enable Sensors | 19 | |
| 6.4a.4 Internal Pump Calibration | 19 | |
