Schéma 6. Accessoires - Michell Instruments MDM300 Manuel De L'utilisateur

Hygromètre avancé à point de rosée
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INSTALLATION
MDM300 & MDM300 I.S. Quick Start Guide
Typical MDM300 Sampling Arrangement
SAMPLE FLOW
1
Adjust the flow rate
using the
2
outlet flow control
valve to
between
0.2 and 0.5 l/min
Turn the instrument
3
on. The status display
will read
'Initializing
internal sensor'
4
VENT
1
Coalescing Filter
The instrument's display will show an initial
2
Particulate Filter
3
Inlet Flow Control Valve
4
Outlet Flow Control Valve
minutes before tracking the measured dew point.
HIGH PRESSURE! High pressure gases are potentially hazardous. Energy stored in these
!
7
10
1
Connect the MDM to
the sample gas stream
Determine the approximate
dew point by using the 'initial check'
procedure on the reverse
Is the
equivalent
No
dew point
> - 40Cdp?
Do you
want to measure
Atmospheric
Yes
at Atmospheric pressure
or System
pressure?
Do you
System
want to measure
System
at Atmospheric pressure
Adjust the flow rate
using the
or System
inlet flow control valve
pressure?
to
between
0.2 and 0.5 l/min
Atmospheric
Turn the instrument
Adjust the flow rate
on. The status display
using the
will read
inlet flow control valve
'Initializing
to
internal sensor'
between
0.2 and 0.5 l/min
After the initialization
period is complete,
close the outlet flow
control valve
4
and
Turn the instrument on.
The status display will read
fully open the inlet
'Initializing internal sensor'.
flow control valve
3
.
Then adjust the flow
rate using the outlet
flow control valve
to between 0.2 and
The instrument will begin
0.5 l/min.
Measurement mode. During the first few
minutes of this, the displayed moisture
value will drop rapidly below the actual
moisture value, before returning
to a stable reading.
measured value, and the status display
will show 'Measurement in progress'.
Once 'Measurement in progress'
has disappeared, the instrument is close
to the final dew point.
Depending on the conditions, it may
continue to respond for a number of
ue to respond for a number of
re tracking the measured dew point.
t
tially hazardous. Energy stored in these
97244 Issue 02, July 2011
97244 Issue 02, July 2011
Schéma 6.
MDM300 Manuel de l'utilisateur
2
4
8
Accessoires
97122 Édition 15, Octobre
3
5
6
2017

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