Dynasonics TFX Ultra Transit Time Flow Meters Manuel d'utilisateur télécharger pdf (Page 66)

Nex t>< B a c k Ca n c el

F i le Op en . . . F i le Sa v e. . .

C a l i b r a t i o n ( Pa g e 2 o f 3 ) - G e n e r a l S e t u p

G a l lo n s M i n

Flow Rate Units: /

It i s a d v isa b l e to F i le Sa v e th e ex i stin g c a l ib r a ti o n b ef o r e m o d i f y i n g i t. If th e F l o w R a te Un i ts selec ted o n th i s p a g e d o n o t

m a tc h th e F l o w R a te Un i ts u tiliz ed f o r th e ex i stin g d a ta p o i n ts c o l lec ted o n Pa g e 3 o f 3, f l o w m ea su r em en t er r o r s c a n o c c u r .

To v i ew m ea su r em en t u n i ts, g o to Pa g e 3 o f 3 a n d p r ess E d i t. Th e Ca l ib r a ti o n Po i n ts E d i to r w i ll sh o w w h a t u n i ts

w er e u sed d u r i n g th e ex istin g c a l i b r a ti o n .

1) If n o d a ta ex ists in th e ed i to r , sel ec ti o n o f F l o w R a te Un i ts w i ll n o t i n f l u en c e m ea su r em en ts.

2) If n ew c a l i b r a ti o n p o i n ts a r e to b e en ter ed o n Pa g e 3 o f 3, i t is a d v i sa b l e to r em o v e th e ex i sti n g c a l ib r a ti o n

p o i n ts u si n g th e Ca l ib r a ti o n Po i n ts E d i to r .

Figure 50: Calibration page 2 of 3

Page 3 of 3 as shown in Figure 51 allows multiple actual flow rates to be recorded by the flow meter. To calibrate a point,

establish a stable, known flow rate (verified by a real-time primary flow instrument), enter the actual flow rate in the Flow

window and press Set. Repeat for as many points as desired.

OTE:N If only two points are to be used (zero and span), it is preferable to use the highest flow rate anticipated in normal

operation as the calibration point. If an erroneous data point is collected, the point can be removed by pressing Edit,

selecting the bad point and then selecting Remove.

Nex t>< B a c k Ca n c el

F il e Op en . . . F i le Sa v e. . .

C a l i b r a t i o n ( Pa g e 2 o f 3 ) - G e n e r a l S e t u p

1) Plea se esta b l ish a

r ef er en c e f l o w r a te.

1F PS / 0. 3M PS M i n i m u m .

2) E n ter th e r ef er en c e f l o w r a te

b el o w . ( Do n o t en ter 0)

3) W a i t f o r f l o w to sta b li z e.

4 Pr ess th e Set b u tto n .

Gal/MIN

Delta Time

F lo w :

E x p o r t. . .

E d i t

Figure 51: Calibration page 3 of 3

Zero values are not valid for linearization entries. Flow meter zero is entered on Page 1 of 3. If a zero calibration point is

attempted, the following error message will be shown:

SETTING ZERO AND CALIBRATION

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