Vaisala GM70 User Manual
Page 5
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VAISALA ___________________________________________________________
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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