Ecotech GTS Control Logic RIV-601P/S, Техническое описание и руководство по применению

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rev. 1 MAR17 DESP 18-GB
AIR PURGING UNIT
APU-874
Description
The air purging unit model APU-874 is a mechanical unit designed to
be applied in front of the spark detector RIV-601P/S mounting unit
SAM-871 for application on ducts and conveyors in order to perform
two important functions:
• Prevent by means of an air jet a dust build-up over the optical
window of the mounting unit SAM-871, that could decrease or
even blind the detector sensitivity.
• Prevent by means of an air cooling the detector heating when the
duct temperature is over 60°C. A thermal insulation is provided to
avoid the direct contact between APU-874 and duct.
The APU-874 is composed of a cylindrical part 80mm in diameter and
150 mm in length, with the inside surface polished as a mirror, and two
flat bases for the mounting purpose on one side to the mounting unit
SAM-871 and on the other to the duct.
Six M6x20mm stainless screws are provided for fixing to the
mounting unit SAM-871.
A thermal insulation plate, of rubber or other material, is also provided
to be applied between the APU-874 and the duct.
On the centre of the cylinder length an 3/8”M universal air fitting is
mounted for the air supply (female socket and male moving plug for
10 mm pipe).
The spark detector RIV-601P/S can see through the APU-874 a
direct
field of view of 25°.
It can also see indirectly, due to the internal reflection, a larger indirect
field of view of 90°,
but with the sensitivity reduced by a 30%.
Specifications
Material 3 mm stainless steel painted yellow, with the internal surface
polished as a mirror.
Dimensions: 150mm high, 110mm wide, 150mm long.
Central tube 80mm in diameter and 150mm long.
Direct field of view 25°.
Indirect field of view 90°. Sensitivity reduced by 30%.
A thermal insulating plate, 150x110x5mm, is provided.
Six M6x20mm stainless steel screws provided for
application to the mounting unit SAM-871.
Brass universal 3/8”M air fitting, Parker (female socket
and male moving plug for 10mm pipe).
Suggested air pressure 3÷6 bar.
Air flow rate 1000 lt/min.
Operating temperature -20 +60°C.
Max duct tempe120°C.
Weight 1.6kg.
Ø 80mm cylinder
3/8”M air fitting
110mm
150mm
SAM-871