Michell Instruments MDM300 Quick Start Manual page 2

MDM300 & MDM300 I.S. Quick Start Guide
Typical MDM300 Sampling Arrangement
SAMPLE FLOW
3
4
VENT
1
Coalescing Filter
2
Particulate Filter
3 Inlet Flow Control Valve
4 Outlet Flow Control Valve
HIGH PRESSURE! High pressure gases are potentially hazardous. Energy stored in these
!
gases can be released suddenly and with extreme force. High pressure systems should be
assembled and operated only by people who have been trained in proper safety practices.
1
Adjust the flow rate
using the
outlet flow control valve
to between
0.2 & 1.2 Nl/min
{MDM300 Version}
0.2 & 0.5 Nl/min
2
{MDM300 I.S. Version}
Ensure inlet flow
control valve is
fully open
Turn the instrument on. The
status display will read
'Initializing internal sensor'.
After initialization period is
complete, the instrument will
begin measurement. Then
adjust the flow rate using
the outlet flow control valve
to 1.0 Nl/min.
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
dew point
> - 40Cdp?
Atmospheric
Yes
Do you
want to measure
System
at Atmospheric pressure
or System
pressure?
Atmospheric
Adjust the flow rate using the
inlet flow control valve
to between
0.2 & 1.2 Nl/min
{MDM300 Version}
0.2 & 0.5 Nl/min
{MDM300 I.S. Version}
Ensure outlet flow control
valve is fully open.
Turn the instrument on. The status display
will read 'Initializing internal sensor'.
After initialization period is complete, the
instrument will begin measurement.Then
adjust the flow rate using the inlet
flow control valve to 1.0 Nl/min.
During the first few minutes of
measurement, the displayed moisture
value will drop rapidly below the actual
moisture value, before returning
to a stable reading.
The instrument's display will show an initial
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
minutes before tracking the measured dew point.
97244 Issue 2.2, September 2013
No
Do you
want to measure
at Atmospheric pressure
or System
pressure?
System
Adjust the flow rate
using the
inlet flow control valve
to between
0.2 & 1.2 Nl/min
{MDM300 Version}
0.2 & 0.5 Nl/min
{MDM300 I.S. Version}
Ensure outlet flow control
valve is fully open.
Turn the instrument
on. The status display
will read 'Initializing
internal sensor'. After
2-3 mins of initialization
have elapsed,
close the outlet flow
control valve and
fully open the inlet
flow control valve.
Then adjust the flow
rate using the outlet
flow control valve
to 1.0 Nl/min.
After initialization period
is complete, the
instrument will begin
measurement.