Control Mark in place
Locking Pin
Locking Pin
INST
ALLA
TION
41
PULSE Installation, Commissioning and Servicing Manual - Revision 19
6
CALIBRATION
A Tatsuno Meter is used with petrol and diesel products. The DEF meter, although similar in
appearance, is specially constructed for use with DEF. However the adjustment procedure
is the same as for the petrol/diesel meter.
Calibration adjustments affect the volume of fuel delivered per revolution of the flow
meter, while the displayed volume always advances by exactly the same amount for each
revolution.
Calibration is achieved by using the Adjustment Wheel to alter the volume delivered by the
Flow Meter per revolution so that it matches the volume displayed after a test delivery.
Refer to local legislation for requirements pertaining to calibration procedures.
Remove the locking pin prior to moving the Adjustment Wheel.
Figure 16� Adjustment Wheel
A single pitch-turn (one hole to the next) varies the flow by 0.04% (approx 0.2ml per
revolution). The meter can be adjusted up to a maximum of 0.64% (3.2ml per revolution).
After calibration, the meter must be wired with a sealed plate (Control Mark).
Over-Delivering
When a Flow Meter delivers
MORE
fuel than required the display will show an amount less
than the actual delivery.
Solution
: “
DECREASE
” the amount delivered per revolution by moving the calibration
wheel in a clockwise direction.
Under-Delivering
When a Flow Meter delivers
LESS
fuel than required the display will show an amount
greater than the actual delivery.
Solution
: “
INCREASE
” the amount delivered per revolution by moving the calibration
wheel in an anti-clockwise direction.
6.1 Firmware Test
Certificate of Approval S624 Revision 7 requires units having a firmware version less than
version 1.20.xx to have the software updated before verification.