60 • Chapter 5: User Mode and Calibration
SC-04
Zero Suppression (ZERO.SUP)
This item only appears if
ZSUP.DSP
is set to
ON
in Maintenance Mode (factory setting is
OFF
).
The
ZERO.SUP
setting is not intended for field adjustment. The default setting is
ON
.
Zero Follower (ZERO.FLW)
This item only appears if
ZFLW.DSP
is set to
ON
in Maintenance Mode (factory setting is
OFF
).
The
ZERO.FLW
setting is not intended for field adjustment. The default setting is
ON
.
Turning Easy Calibration On/Off (E-CAL)
OFF
(factory setting): Auto Calibration (
A-CAL
) item appears in
GAS CAL
menu instead of
Easy Calibration (
E-CAL
).
XX seconds
: Easy Calibration (
E-CAL)
item appears in
GAS CAL
menu instead of Auto
Calibration (
A-CAL
). During a calibration, the instrument counts down from the number of
seconds you select.
NOTE:
RKI Instruments recommends an
E-CAL
setting of 120 seconds for Cl
2
and NH
3
and 60 seconds for all other gases.
1. While in User Mode, press AIR to scroll to
E-CAL
.
2. Press and release POWER MODE. The current setting flashes.
3. Use AIR to display the desired setting.
4. Press and release POWER MODE to save the setting and return to the
E-CAL
item in
User Mode.
5. See “Entering Measuring Mode (START)” on page 62 to enter Measuring Mode.
Sensor
Zero Suppression
Value
Cl
2
0.10 ppm
HCN
0.5 ppm
NH
3
4 ppm
NO
2
0.30 ppm
PH
3
0.02 ppm
SO
2
0.20 ppm
E-CAL
