RKI Instruments GD-70D Series User Manual

GD-70D - 62 -
<Zero Adjustment "1-1">
This is used to perform the zero adjustment. Before starting the zero adjustment, let the detector draw
fresh air or zero air until the reading is stable.
For oxygen units, "1-1" is called the span adjustment instead of the zero adjustment. In this case, fresh air
or zero air must be applied to the detector to ensure the reading is 20.9 vol%. For information on the span
adjustment, see Maintenance on page 86.
Zero Adjustment
PW
A1
A2
F
LCD
From Detection Mode, press the
MODE key for three seconds.
●
○
○
○
0.0ppm
SIH4
↓
↓
1-1.ZERO
Press the SET key.
●
○
○
○
1- 1
ZERO
MAINTENANCE
↓
↓
Current Concentration Value
Display
Press the SET key to perform the
zero adjustment.
●
○
○
○
1.1ppm
ZERO SET
MAINTENANCE
↓
↓
Zero Adjustment Completed
The menu returns to 1-1.ZERO
automatically.
●
○
○
○
0.0ppm
ZERO OK
MAINTENANCE
↓
Return to 1-1.ZERO
* If the zero adjustment fails.
●
○
○
○
0.0ppm
ZERO NG
MAINTENANCE
↓
Return to 1-1.ZERO

RKI Instruments GD-70D Series Specifications

General

Brand	RKI Instruments
Model	GD-70D Series
Category	Gas Detectors
Language	English