User guide

___________________________________________________________________
VAISALA ___________________________________________________________5
CHAPTER 9
FIELD CHECKING OF FIXED TRANSMITTERS....................43
Field Checking of the Vaisala GMW115 and
GMD/W20 Series Transmitters
(Diffusion Sampling).............................................43
Field Checking of the Vaisala GMD/W20 Series
Transmitters (Pump Aspirated Sampling)..........45
Field Checking of the GMT220 or GMM220
(Without a Display) ...............................................46
CHAPTER 10
CALIBRATING AND ADJUSTING THE PROBES .................47
Calibration Interval...............................................47
Factory Calibration and Adjustment...................47
Calibration and Adjustment by the User ............48
Adjustment with Reference Gases......................49
Equipment Needed.............................................49
Reference Gases ...............................................49
Two-Point Adjustment Procedure.......................49
One-Point Adjustment Procedure.......................51
Adjustment with Two Probes ..............................53
CHAPTER 11
ERROR MESSAGES ..............................................................55
CHAPTER 12
MAINTENANCE......................................................................57
Changing the Probe..............................................57
Changing the Probe Filter....................................58
Cleaning ................................................................58
Changing the Battery
Pack..................................59
Technical Support ................................................60
Product Returns ...................................................60