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MODEL 2234 DIGITAL FLOW COMPUTER
1.1.1 CHANGES
It is intended that Model 2230 Series functionality be maintained. Intermediate
calculations will have read code assignments and default to the "VAR" mode. If
operators desire to override a particular calculation, the read code is put into the
"FXD" mode.
The startup prompting is modified to add entry information required for compliance
with the new measurement standard.
For example, there will no longer be a
selection for "TAPTYPE". There will be entries for thermal expansion coefficients
for both the orifice plate and meter tube.
The 800 and 900 series Read Codes will be unchanged in functionality regarding
display of Mass Rates and Mass Totals both for individual lines and Station Totals.
An operator selection for TAPLOC is included. If downstream taps are selected
the Model 2234 will compute upstream pressure based upon differential pressure.
Only the upstream expansion factor will be computed.
A keyboard entry for isentropic exponent is included.
The Model 2234 operator interface consists of a 24-key control keyboard for
entering data and functions and an eight character alpha-numeric display. The
operator interface permits the operator to enter, inspect, and change measurement
parameters; the operator may enter deviation/alarm limits related to critical
transducer values, flow rates and totals. Optionally, totalized volume also may be
displayed on a six-digit electro-mechanical counter on the instrument front panel.
SECTION 1
2
