Dynasonics TFX Ultra Transit Time Flow Meters Manuel d'utilisateur télécharger pdf (Page 57)

Transducer Spacing is a value calculated by the flow meter firmware that takes into account pipe, liquid, transducer and

mounting information. This spacing will adapt as these parameters are modified. The spacing is given in inches for English

units selection and millimeters for metric. This value is the lineal distance that must be between the transducer alignment

marks. Selection of the proper transducer mounting method is not entirely predictable and many times is an iterative process.

OTE:N This setting only applies to DTTN, DTTL, and DTTH transducers.

Transducer Flow Direction allows the change of the direction the meter assumes is forward. When mounting meters with

integral transducers, this feature allows upstream and downstream transducers to be electronically reversed, making upside

down mounting of the display unnecessary.

Pipe Material is selected from the pull-down list. If the pipe material utilized is not found in the list, select Other and enter the

actual pipe material Sound Speed and Roughness (much of this information is available at web sites such as www.ondacorp.

com/tecref_acoustictable.html) for pipe relative roughness calculations.

Pipe O.D. and Wall Thickness are based on the physical dimensions of the pipe on which the transducers will be mounted.

Enter this value in inches for English units or millimeters for metric units.

OTE:N Charts listing popular pipe sizes have been included in the APPENDIX of this manual. Correct entries for pipe O.D. and

pipe wall thickness are critical to obtaining accurate flow measurement readings.

Liner Material is selected from the pull-down list. If the pipe liner material utilized is not included in the list, select Other and

enter liner material Sound Speed and Roughness (much of this information is available at web sites such as www.ondacorp.

com/tecref_acoustictable.html). See page 41 for pipe liner relative roughness calculations.

Fluid Type is selected from a pull-down list. If the liquid is not found in the list, select Other and enter the liquid Sound Speed

and Absolute Viscosity into the appropriate boxes. The liquid’s specific gravity is required if mass measurements are to be

made, and the specific heat capacity is required for energy measurements.

Flow Tab

Flow Rate Units are selected from the drop-down lists. Select an appropriate rate unit and time from the two lists. This entry

also includes the selection of Flow Rate Interval after the / sign.

Totalizer Units are selected from drop-down lists. Select an appropriate totalizer unit and totalizer exponent. The totalizer

exponents are in scientific notation and permit the eight digit totalizer to accumulate very large values before the totalizer

“rolls over” and starts again at zero. Table 8 illustrates the scientific notation values and their respective decimal equivalents.

Do w n l o a d Ca n c el

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

S y s t e m C o n f i g u r a t i o n

DisplayBasic

Flow

Filtering Output Security

G a l lo n s M i n

Flow Rate Units: /

G a l lo n s

X 10

Totalizer Units:

0. 0

Min Flow: Gal/M

Gal/M

400. 0

Max Flow:

Low Flow Cuto:

Low Signal Cuto:

%Substitute Flow:

Figure 41: Flow tab

BASIC TAB

Page 57 March 2014

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 107 108

Commentaires sur ces manuels

Pas de commentaire

Dynasonics TFX Ultra Transit Time Flow Meters Manuel d'utilisateur Page 57

Commentaires sur ces manuels

Produits connexes et manuels pour Équipement Dynasonics TFX Ultra Transit Time Flow Meters