RKI Instruments GD-70D Series - Page 101

- 101 - GD-70D
CAUTION
Do not press the SET key before the reading is stabilized.
2-0.GAS TEST
The first item in Maintenance Mode will display.
2- 0
GAS TEST
MAINTENANCE
Performing a Zero Adjustment
2-1. ZERO
Press the ▲ key until the ZERO screen
displays.
Press the SET key.
2- 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 instrument will indicate whether the zero
adjustment passed (OK) or failed (NG) and
will return to 2-1.ZERO automatically.
0.0ppm
ZERO OK
MAINTENANCE
OR
0.0ppm
ZERO NG
MAINTENANCE
↓
↓
Return to 2-1.ZERO
Return to 2-1.ZERO
Performing a Span Adjustment
2-2. SPAN
Press the ▲ key until the SPAN screen
displays.
Press the SET key.
2- 2
SPAN
MAINTENANCE
Connect Gas
Open the hose clamp on the gas bag and
immediately connect the tubing to the tubing
stub on the GAS IN fitting
OR
Use the calibration tubing to connect the
demand flow regulator to the tubing stub on
the GAS IN fitting.
Allow gas to flow for 2 minutes.
↓
↓
Accept Reading
Press the SET key when the reading has
stabilized.
* The reading must be above 10% of the full
scale value in order to continue.
2.0ppm
SPAN GAS
MAINTENANCE