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8009389/YN39/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
PROJECT PLANNING INFORMATION
3.2 Project Planning Checklist
The following Checklist simplifies performing and controlling project planning measures
required before start-up in the correct sequence. Technical data and dimensional drawings
of system components,
page 128 and following.
Topic Task Measure/determination
Determination of
measuring point
Observe national
regulations such as
VDI 3950
Provide for unhindered inlet and outlet paths:
▸ For round duct cross-sections: 3 times the duct diameter
▸ For rectangular cross-sections: Hydraulic diameter
▸ If these specifications cannot be met: Inlet path > outlet path,
e.g.
2
/
3
:
1
/
3
; uniform concentration spread whenever possible
Emission measuring
point
▸ Obtain official approval for emission measuring point.
▸ Provide for calibration openings at easily accessible places.
▸ Ensure the GM35 and calibration probe do not influence
each other; the calibration gland should be located at a
minimum distance of 0.5 m away from the measuring device.
Application conditions
▸ Observe Technical Data for duct/ambient conditions!
▸ Gas temperature above/below dew point (dry/wet)
Installation location
▸ Acc. to FGD wet :
Select a version with active measuring path ≤ 500 mm when
a GMP probe is used.
Pressure conditions
at the measuring
point
▸ A fitting location with partial vacuum in the duct is ideal.
▸ For duct pressures > 10 mbar, please contact SICK to select
the correct purge air blower type.
Table 2: Project planning checklist
D
4F (Cross-sectional area)
U (Circumference)
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