Teledyne 4250, Инструкция по установке и эксплуатации, Страница: 33 / 204

4250 Flow Meter
Section 2 Programming
2-5
2.3 Description of
Program Steps
The Program Steps for the 4250 are:
1. Operating Mode
2. Flow Conversion
3. Adjust Level/Parameters
4. Reset Totalizer
5. Sampler Pacing
6. Sampler Enable
7. Alarm Dialout
8. Printer
9. Reports/History
2.3.1 Step 1, Operating Mode
Note
If you choose NOT MEASURED for any selection, the flow
meter will make no further reference to that value or function
for the rest of the program, and you will not be able to activate
that process or function later on unless you reprogram
step 1 .
If there is a feature or option you need that does not appear on
your display when the manual says it should, return to
step 1
and make sure you have not inadvertently left it turned off in
either the Program or Setup menus.
Note that selecting some features automatically excludes oth-
ers. For example, selection of pH or D. O. excludes the other
parameter, unless you use the
YSI 600 Multi-Parameter
Sonde , which measures pH, D.O., and conductivity at the
same time.
Step 1, Operating Mode , determines how you set up the flow
meter. In this step there are two choices, Program and Setup .
Program advances you to step 2 , and from there on you cor-
relate the flow meter to the flow stream. Setup selects various
basic “housekeeping” features for the flow meter. Here you
determine the internal clock, site identification, measurement
setup, hysteresis, report contents, operation of the display back-
light, and program lock. In
Program you select the units of
measure the flow meter will use for the display, calculations, and
reports.
This method keeps program size manageable and makes pro-
gramming more efficient. By turning off unneeded features of the
program early, you do not have to keep de-selecting those fea-
tures over and over as you work through the program.
Consequently, you should choose carefully from the first step. We
suggest you study the program first, then fill out the
Pro-
gramming Worksheets (in the back of this manual), and program
the flow meter last, if you are unfamiliar with the unit.
2.3.2 Step 2, Flow
Conversion Type
Step 2, Flow Conversion Type , determines how the flow
meter calculates flow rate and total flow. In general flow is calcu-
lated for the 4250 from measured level, the size and shape of the