Automatic Shut-Off Valve (Option) - PRONOVA SSM 6000 User Manual

SSM 6000 HARDWARE DESCRIPTION
CONT
2.2.9

Automatic shut-off valve (option)

The SSM6000 with the "continuous measurement" option is designed for pressures between –200 and +200 hPa at the measuring-
gas inlets in measuring mode. During measuring breaks and/or with the analyzer switched off, an overpressure of more than 5 hPa
at the measuring-gas inlet of measuring point 1 causes a continuous flow through the analyzer. Since the condensate pump is
inactive in stand-by mode, condensate can accumulate in the cooler during longer measuring breaks. When a measuring process
starts, this condensate would then be drawn into the gas system and could damage the analyzer. This means that the measuring-
gas supply for measuring point 1 must be interrupted during measuring breaks with admission pressures of more than 5 hPa,
using suitable means, such as an automatic stop valve.
The solenoid valve can be controlled via the "Measurement active" status output of the SSM 6000 on the underside of the analyzer
(port 2).
At the customer's request, the manufacturer can install a suitable stop valve (16) in the analyzer. The valve is then automatically
controlled by the analyzer. This feature is explicitly mentioned in the test and calibration certificate.
The measuring-gas inlets of measuring points 2 to 4 are closed during measuring breaks and when the analyzer is switched off, and
hence do not require an additional shut-off device.
800C-07.07.EN SSM 6000C User Manual 20