VorTek Pro-T, Instruction Manual

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Series M22/M23/M24 Instruction Manual Chapter 3 Operation
M-000-00010 3-7
Example for Setting an Output
The following shows how to set Output 1 to measure mass flow with 4 mA = 0 lb/hr and 20 mA = 100 lb/hr with
a time constant of 5 seconds. (All outputs are disabled while using the Setup Menus.)
First, set the desired units of measurement:
1. Use  keys to move to the Units Menu (see page 3-12).
2. Press

key until Mass Flow Unit appears. Press
ENTER
.
3. Press  key until lb appears in the numerator. Press  key to move the underline cursor to the
denominator. Press the  key until hr appears in the denominator. Press
ENTER
to select.
4. Press  key until Units Menu appears.
Second, set the analog output:
1. Use  keys to move to the Output Menu.
2. Press the

key until 4-20 mA Output 1 appears.
3. Press  key to access Measure selections. Press
ENTER
and press the  key to select Mass. Press
ENTER
.
4. Press  key to set the 4 mA point in the units you have selected for mass of lb/hr. Press
ENTER
and
use  keys to set 0 or 0.0. Press
ENTER
.
5. Press

key to set the 20 mA point. Press
ENTER
and use

keys to set 100 or 100.0. Press
ENTER
.
6. Press  key to select the Time Constant. Press
ENTER
and use  keys to select 5. Press
ENTER
.
7. Press the
EXIT
key and answer
YES
to permanently save your changes.
Example for Calculating Output Current
Assume Output 1 is scaled as above for mass flow with 4 mA = 0 lb/hr and 20 mA = 100 lb/hr.
Output 1 current = ((Flow rate / 100) x 16 mA) + 4 mA