15
Requirement for Zero Adjustment
A shut-off valve should be installed downstream of the transducer.
Tight shut-off is important (fig. 18).
Fig. 18 Shut-off valve downstream of the transducer
For best zero adjustment the meter can be installed in a by-pass arrangement as shown in the
diagram (fig. 19).
All peripheral devices can be active under operating conditions and the process flow must not
be shut off.
Fig. 19 By-pass installation for best Zero Adjustment
2.2.3 Special remarks on the MFS 3000
In order to guarantee the perfect function of the CORIMASS transducer MFS 3000 (even after
poor transport conditions), the transducer is provided with a “Transport Safety Device”. The
“Transport Safety Device” must be inactive for operation and active for transportation as
follows:
Commissioning:
Before commissioning, the “Transport Safety Device” must be made
inactive by turning the
recessed Allen Screw (on reverse side of the instrument) anti-clockwise against the
mechanical stop with a 6 mm Allen Key. In the case of the MFS 3000 - 30E two “Transport
Safety Devices” are used, and both must be made inactive prior to commissioning
(see Fig. 20).
