Heath Consultants Gasurveyor 500 Series - Manual (Page 52)

GASURVEYOR 3-500 USER HANDBOOK
B-4
In CAL mode, the instrument buttons have the functions
shown in Figure B-4.
Single Press Double Press
Press and
Hold
Button 1
Button 2
Figure B-4 CAL Mode Button Functions
Zeroing the Instrument
1) Enter FCM. See the previous section ENTERING
FCM.
2) Double press Button Two to zero current gas
range.
3) Single press Button Two to select the next gas
range.
4) Repeat steps 2 and 3 until all gas ranges have been
zeroed.
5) Proceed to FIELD CALIBRATION
PROCEDURE to calibrate the instrument.