MSA 47K Series, Руководство по эксплуатации

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GB
MSA ACCESSORIES
Series 47K Gas Detector [SIL 2]
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The stainless steel versions are available with hose or pipe connection for remote
calibration.
Pipe connection
: 1/8” NPT
Gas flow rate : 1.0 l/min
Air velocity : 0 ... 6 m/s
Calibration must only be carried out if wind speed is < 1.5 m/s.
Using the Weather Protection Cap will extend the response time to:
t
90
< 80 sec for methane / t
90
< 130 sec for propane
The signals will be reduced by up to 20% when using the weather protection cap.
This must be taken into consideration during calibration and when adjusting alarm
levels. The cap must not be used if the incident flow is bottom up.
6.3. Flow Through Adapter / Pump Adapter
Flow Through Adapter
1 Inlet
The flow through adapter is for use with a pumped sampling system. It is
available in aluminium or stainless steel 316 and screws on to the front of the
Series 47K sensor. The lower of the two gas connection ports must be used for
the gas sample inlet.
Gas inlet/outlet thread
: 1/8” NPT
Gas flow rate : 1.0 l/min
Using the Flow Through Adapter will extend the response time, depending on the
gas flow rate.
1