Cng Dispenser Commissioning - tatsuno OCEAN TOWER Series Installation And User Manual

Fuel Dispensers TATSUNO EUROPE ‐ Installation and User Manual , revision 10, January 2022
Now the dispenser is ready for fuel delivery.
NOTE
The above‐mentioned start of the electronic counter is described for the PDEX5 counter. The course is very
similar for PDEX, TBELX and TBELTM counters. The version and checksum of the metrologically relevant part of the
program and the status of switch SW1, which is covered by a cover and provided with a seal against misuse, are
always displayed.
5.2.1. CNG DISPENSER COMMISSIONING
Setting of mass flow meter zero‐point
All CNG mass flow meters based on the principle of the Coriolis effect are sensitive to the setting of zero
(zero flow rate) because with a decreasing flow rate the measuring error increases. The setting of zero
must be carried out after every dispenser installation and every meter exchange. The dispenser counter
allows carrying out the procedure of setting the zero‐point using the service remote controller. The
following procedure is intended for authorized service engineers or metrology officials only:

Close input ball valves at the dispenser inlet and hang the filling nozzles onto the dispenser (filling
nozzles must be in the nozzle boot during the zero‐point setting process)

The calibration switch SW1‐1 must be in the OFF position.

Set the parameter P97 to value 1 to activate the procedure for setting the zero‐point. The counter
sends a command for setting the zero‐point to the mass meter. Subsequently, the counter waits for
a response from the mass meter. It then ones send information that the zero‐point was set with the
message "done" or was not set with the message "fail".
Don't exit setup until the zero‐point setting procedure reports "done"!
NOTICE‐CNG
If the zero‐point value is not correct, or the process of zero‐point not passed correctly then new
filling is not allowed and error message E74 is appeared).
NOTICE‐CNG
The amount display (€) shows the current value of the zero‐point. The quantity display (kg) shows
the course of the zero‐point setting procedure.
NOTICE‐CNG
In the CNGmass (Endress&Hauser) meter, the course of the procedure is signaled by an increasing
number 1 ‐ 99. After reaching the value 99, the process is terminated, and the message "done" is shown.

Exit service mode by pressing <R> on yellow service remote transmitter change position of
switch SW 1‐1 to ON (PROTECTED)

Open ball valves valves at the dispenser inlet.
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