ADC MGA3000 series - Page 3

MGA3000 Multi-Gas Analyser Operation Manual Iss. 1.00
Copyright  2007, ADC Gas Analysis Ltd. 2
3.4 Display & Keypad ................................................................................................. 16
3.4.1 Display ....................................................................................................... 16
3.4.2 Function Keys .............................................................................................. 17
3.4.3 Menus......................................................................................................... 17
3.5 Analogue (Chart) Outputs ..................................................................................... 18
3.6 Alarm (Trip) Outputs ............................................................................................ 18
3.6.1 Setting Alarm Outputs .................................................................................. 18
3.7 RS232C Serial Port............................................................................................... 19
3.7.1 Protocol ...................................................................................................... 19
3.7.2 Serial Port Settings....................................................................................... 19
3.8 Measurement ...................................................................................................... 20
4. Calibration.....................................................................................................21
4.1 Initial Checks....................................................................................................... 21
4.2 Warm Up ............................................................................................................ 21
4.3 Zero Adjustment.................................................................................................. 21
4.3.1 Manual Zero ................................................................................................ 22
4.3.2 Auto Zero.................................................................................................... 22
4.4 Span Adjustment ................................................................................................. 23
4.4.1 Setting Span ............................................................................................... 23
5. Maintenance ..................................................................................................24
5.1 Routine Checks .................................................................................................... 24
5.1.1 Water Vapour .............................................................................................. 24
5.1.2 Dust ........................................................................................................... 24
5.2 Instrument Checks............................................................................................... 25
5.2.1 Source Block Purge (when fitted) ................................................................... 25
5.2.2 Filter Column (when fitted)............................................................................ 25
5.2.3 Sample Flow................................................................................................ 25
5.2.4 Throttles ..................................................................................................... 26
6. Optical Bench Descriptions ..............................................................................27
6.1 Introduction ........................................................................................................ 27
6.2 GC Bench (when fitted)......................................................................................... 27
6.3 SB Bench ............................................................................................................ 28
7. Electrical Specifications ...................................................................................30
7.1 Power Supply ...................................................................................................... 30
7.2 Analogue Outputs ................................................................................................ 30
7.2.1 When set for voltage output .......................................................................... 30
7.2.2 When set for current output .......................................................................... 30
7.3 Alarm (Trip) Contacts ........................................................................................... 30
7.4 Serial (RS 232) Port ............................................................................................. 31
8. Spare Parts ...................................................................................................32
9. Moisture Sensor Option...................................................................................33
9.1 General Description .............................................................................................. 33
9.1.1 MGA3000 Zero Calibration............................................................................. 33
9.1.2 MGA3000 Span Calibration ............................................................................ 33
9.1.3 Sensor Autocal............................................................................................. 33
9.1.4 Pre-conditioning the transmitter..................................................................... 34
9.1.5 Adjust the Auto Cal ...................................................................................... 34