SC-04
Chapter 5: User Mode and Calibration • 37
Tips for Using User Mode
•
To scroll from one item to the next, press and release AIR. To reverse the scrolling
direction:
a. Press and hold AIR.
b. Immediately press POWER MODE and then release both buttons.
c. The scrolling direction returns to the original direction when you exit and reenter a
menu.
•
To skip an item when a question is asked, press and release AIR.
•
To enter an item and to save any changes, press and release POWER MODE.
•
To change a flashing parameter, press and release AIR. To reverse the direction of change
(ie. from increasing to decreasing or vice versa):
a. Press and hold AIR.
b. Immediately press POWER MODE and then release both buttons.
•
To exit an entered item without saving a change, press and hold AIR and POWER MODE
for a few seconds.
Performing a Bump Test (BUMP)
Bump test the instrument before each day’s use with a known concentration of the target gas.
The instrument does not need to be calibrated unless it does not pass the bump test.
To bump test the SC-04, you need:
•
Calibration gas cylinder
•
0.25 LPM fixed flow regulator
•
Non-absorbent tubing
•
Calibration cup
1. Confirm that the SC-04’s calibration gas value matches the concentration listed on the
calibration gas cylinder as described on pg.47.
Table 9: Calibration Concentration Limits
Channel
Min. Cal. Gas
Concentration
Max. Cal. Gas
Concentration
Ammonia
8 ppm
400 ppm
Chlorine
0.15 ppm
10.00 ppm
Hydrogen Cyanide
0.9 ppm
30.0 ppm
Nitrogen Dioxide
0.50 ppm
20.00 ppm
Phosphine
0.05 ppm
20.00 ppm
Sulfur Dioxide
0.50 ppm
100.00 ppm
