Flow monitoring, Ph 3.3), Operating procedures – Dwyer Series PUF User Manual

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3: Operating Procedures

Flow monitoring

The

FLOW READING screen is the one most used during normal monitoring operation. It shows the instantaneous

fluid flow together with totalized values (when enabled). In this mode you can select the flow rate measurement
units by pressing keys 7 (liters), 8 (Gallons, Barrels) or 9 (m³), or change the display to show velocity by pressing
key 4.

If the flow reading exceeds a value of +/-9999 in the current units, a *10 multiplier will be displayed above the
units and the value displayed will be a tenth of the actual value. Similarly a * 100 and *1000 may be displayed on
very large flow rates.

There are limitations on the use of these larger flow values with regards to logging of data and setting the current
and pulse outputs. If the flow reading is less than 140000 US gallons/min, the value can be logged and
downloaded via Portagraph III.

3.3

Using the System at a Regularly Monitored Location

Setting up the PUF system using the

Quick Start method described in Paragraph 3.2 is easy and the

recommended method to use in a ‘one time’ situation. But if you have a site location that you want to monitor on a
frequent basis it is better to set up a named ‘Site’ for that location so that you can recall it when needed and so
avoid the need to re-enter the site details every time you want to install the equipment there.

Note: See Paragraph 3.4 for details of how to set-up and manage site details.

Use this procedure to install the equipment at a named site.

Note: If you select a different Sensor set (e.g. A-ST) when entering new site data you could receive an “invalid”
error message if the previous Sensor set was operating at a temperature above 275ºF. If this occurs, ignore the
warning as it will disappear when you enter a temperature in the correct range for new sensors.

Select

View Edit Site Data from the MAIN

MENU.

Select

Choose from list of sites.

Select one of the sites listed and press the
ENTER key.

The

Site name will show the selected site and

the site parameters will be listed on the screen.

Scroll down through the menu list and enter/
change the data that might have changed since
the last time the site was accessed.

When you are satisfied that the parameters are
correct select

Save current site & read

flow.

VIEW EDIT SITE DATA

DD-MM-YY HH:MM:SS

Choose from list of sites

Site name : MySite

Dimension units : Inches

Pipe outside diameter: 6.50

Pipe wall thickness : 0.50

Pipe lining thickness: 0.16

Pipe wall material : Mild Steel

Lining material : Steel

Sensor set : B-ST

(see note)

Sensor mode : Reflex

Fluid type : Water

Save current site & read flow

Delete this Site

Download & save current site

Exit