RKI Instruments GD-K11D - Manual (Page 11)

Model GD-K11D Operator’s Manual Description • 7
Adjustment potentiometers
The display board includes two potentiometers, which extend from the bottom of the
display board. Table 5 lists each potentiometer and its function.
INT switch
The INT switch is a 16-position rotary switch that allows you to perform particular tasks.
Use a small, flat-blade screwdriver to adjust the switch. The position that is at the top of
the switch is the currently selected position. If you are unsure which position is selected,
press the MODE button. If the switch is in any position other than 0, the position number
appears on the left side of the display screen.
Table 6 lists switch positions for common tasks. The table also references step-by-step
procedures for each task.
CAUTION: Switch positions not listed in this table are for factory use. Only use the switch
positions listed is this table and described later in this manual.
Switch position “0” is for normal operation (detection mode). If you adjust the INT
switch, always return it to the “0” position after you complete the task.
Table 5: Model GD-K11D Adjustment Potentiometers
Potentiometer 1 Function
ZERO Adjusts the zero setting
SPAN 2 Adjusts the span (response) setting
1
The GAIN potentiometer is for factory-use only. It is
for coarse span adjustments.
2
Only use the SPAN potentiometer if you cannot set
the span setting with the
∆ and ∇ buttons.
Table 6: Model GD-K11D INT switch positions
Position Task Refer to
0 Detection mode (normal operation) page 1
1 Calibration with gas sample page 22
2 Adjust the alarm point page 13
3 Adjust the alarm delay page 14
5 Turn on/off peak reading feature page 13
7 Adjust the alarm type (high/low) page 15