Welch Allyn LC101 CO2 Module - User Manual - Manual (Page 22)

LC101 CO
2
Module OEM Implementation Manual
Page 22 Confidential Welch Allyn OEM Technologies
Two-Point User Calibration Procedure
Two-Point User Calibration Equipment Setup
Equipment needed:
• calibration gas canister (8 – 12% CO
2
, ±0.02%, balance air or nitrogen)
• gas valve and non-silicon tubing
• sample elbow or tee
• flow meter
• sample line
• watertrap
• CO
2
scrubber (or 0% CO
2
medical-grade gas source)
CAUTION Make sure that the tubing used to connect the gas supply to the LC101 does
NOT contain silicon. Silicon tubing absorbs CO
2
and affects the stability of
the gas concentration, thereby reducing the accuracy of the procedure.
Illustration of gas canister,
regulator and pneumatic circuit
10%
CO2
Bal. N2
Regulator
On/Off
Tee
Free Flow Away
From Monitor Input
To Monitor
Water Trap