G-Shield Instruction Manual
Version 1
24
13 Calibration
G-Pods are factory calibrated before dispatch to allow for fast deployment in the field.
Calibration must occur at least every six months. G-Pod calibration gas concentrations
are factory set and cannot be adjusted.
Figure 32. Calibration equipment.
Refer to
Section 13.4 HCN Calibration
calibration procedure.
Calibrate G-Pods with the correct concentration of calibration gas.
Zero calibration uses zero-grade air or fresh air. Span calibration uses a known
concentration of calibration gas.
G-Pod calibration adjusts the response of the G-Pod to known concentrations of gas at
two points, zero and span.
Description
Specification
HCN Calibration Gas
10 PPM
CO Calibration Gas
100 PPM
Zero Grade Air
< 0.1 PPM Hydrocarbons
PVC Flexible Tubing
3/16 ” ID, 5/16 ” OD (3.2 mm ID, 4.7 mm OD)
Fixed Flow Regulator
1.0 L / min
The HMI displays a calibration reminder when the G-Pod calibration is due within the next 14 days.
Figure 33. Calibration reminder.
Figure 34. Calibrate now.
WARNING! G-Pod calibration is due. You must calibrate the G-Pod. Incorrect
calibration can result in injury or death to personnel.
13.1 Calibration Reminder