GDS Corp GASMAX II + GDS-IR, Руководство по эксплуатации и обслуживанию

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GASMAX II + GDS-IR Operation & Maintenance Manual, Revision 1.1
Page 21
BEFORE YOU BEGIN
Before beginning calibration, make sure you have the following items:
1) cylinder of calibration gas or ‘span gas’. This is typically 50% LEL for the target hydrocarbon gas, but
can be any value between 25% and 75% of range.
2) cylinder of “zero air”, typically % % nitrogen. If the GDS-IR is configured to detect
Carbon Dioxide, the zero air mixture should contain nitrogen 99.9% by volume.
3) A fixed flow regulator and a length of flexible tubing. GDS Corp recommends a flow rate of 0.5 liters /
minute for standard combustible gases.
4) A magnetic wand
CALIBRATION SETUP
The GDS-IR infrared sensor has a barbed push-on cal gas inlet fitting on the bottom of the sensor. Attach
the fixed flow regulator and flexible tubing as shown below. Calibration may be performed on the GDS-IR
sensor in either the vertical or horizontal configuration.
Figure 5-2: Local GDS-IR Calibration Setup
Figure 5-3: Remote GDS-IR Calibration Setup
M E A S U R E M E N T N A M E
12
% L E L
P E
E I
I
M E A S U R E M E N T N A M E
12
% L E L
P E
E I
I
Fixed Flow Regulator
Cylinder of
Calibration Gas or Zero Air
Flexible Tubing
Fixed Flow Regulator
Cylinder of
Calibration Gas or Zero Air
Flexible Tubing
M E A S U R E M E N T N A M E
12
%
E
E I
I
Cylinder of
Calibration Gas or Zero Air
Fixed Flow Regulator
IR-Zero
IR-Zero
IR-Zero