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16. How to Calibrate Sensors (continued)
Put analyzer in calibration mode:
1. Select Control on main menu.
2. Swipe calibration magnet over the silver Cal Magnet sticker,
located at bottom left of keypad.
3. The analyzer is now in calibration mode.
Calibrate your analyzer:
1. Connect calibration gas to analyzer using one of the following
three set-ups:
(1
st
option) Measure flow of pump at point of cal gas input with
flow meter. Connect calibration gas to analyzer through flow
meter and adjust flow to match pump draw.
(2
nd
option) Vented flow meter configuration. Ensure sensors are
not over or under pressurized by allowing small amount of gas out
of flow meter. This prevents air from entering system and allows
pump to control internal pressure within analyzer.
(3rd option) *Recommended method* Use on-demand
regulator which uses pump draw to establish flow. No need to
measure and match flow from the regulator, as pump is
controlling the flow.
2. Flow calibration gas for 5 minutes.
3. After reading has stabilized for target sensor, press OK to display
input mode. Input concentration of calibration gas using numbers
on keypad. Press OK.
4. Disconnect calibration gas.
5. After calibrating target sensor, allow analyzer to flush with fresh
air for 5 minutes or until readings are below 10 ppm.
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