Siemens FUS1010 User Manual download pdf (Page 53)

2-13

1010NFM-3J

Section 2

2.3.1 HOW TO SELECT A LIQUID CLASS

The liquids listed in the [Liquid Class] option list are representative samples of the class of liquids to

which they belong. Selecting a named liquid fills in the Estimated Vs (m/s), Viscosity (cS), and Density

(SG) parameters automatically. However, you have the option of editing these parameters individually

to fine tune the liquid settings. If you do not find a liquid that matches your application, then you can

select [Other]. This selection will not provide a liquid name or automatic parameter entry. Only Ethyl-

ene Glycol (20 & 50%), CaCl Brine (27%) and all water entries provide energy metering services.

To select a Liquid Class:

To access the option list press

Scroll through the list to find the closest match to the application’s liquid.

To register selection press

ENT

Liquid Class

Siemens Dual Path ABC

Access Liquid Option List

Estimated Vs m/s 1482

Viscosity cS 1.00

Density SG 1.000

Select Liquid Water 20C/68F

Use this menu cell to edit the

Estimated Vs ONLY if you are

sure of a more accurate value.

This will reduce the chances of

a re-spacing request for clamp-

on flow transducers during the

install procedure.

Use this menu cell to edit

the liquid viscosity ONLY

if you are certain that the

data you enter is

accurate. An erroneous

entry could affect meter

calibration.

Use this menu cell

to select a liquid.

Selecting a liquid

automatically enters

data into Liquid

Class menu cells.

Use this menu cell to

edit the specific

gravity of the liquid.

How to Edit the Estimated Vs (liquid sonic velocity)

During transducer installation, the flow computer bases its initial transducer spacing recommendation

on the value stored in this menu cell. Estimated Vs m/s allows you to review and modify (if necessary)

the Vs value for the liquid class you selected.After you install the transducers, the computer will mea-

sure Vs directly. If the displayed (or edited) Vs stored in this menu cell is accurate, the transducers will

be spaced correctly. This will eliminate the need to re-space the transducers after their initial installa-

tion. However, if the estimated Vs is substantially different from the measured value, the computer will

request you to re-space the transducers during the transducer install procedure.

NOTE: During the Xdcr install procedure (see paragraph 2.4), you can ignore a respacing

request by pressing the <Down Arrow> instead of <ENT>. If this triggers a Spacing

Alarm, check [Diagnostic Data/Site Setup Data] to make sure the measured Vs value

does not exceed the Vs max or Vs min items.

To edit the Estimated Vs m/s:

To activate numeric entry press

Type the sonic velocity value using meters-per-second.

To register the data press

ENT

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Siemens FUS1010 User Manual Page 53

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