AW Gear Meters EMO-1005 - Manual (Page 16)

AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com
 Tel: 262-884-9800  Fax: 262-884-9810  Email: [email protected]
REV. 1a 05/98 EMO-1005 Manual.DOC
15
LIMITS PROGRAMMING (Display 3)
LIMITS? (none=0)
RATE=1 TOTAL=2
By answering with a 0 the scaling will be skipped
By answering with a 2 go to the next section
There are a total of 4 limits per channel. Each of the limits can be a totalizer or rate limit. If the limit
has been programmed for total and rate, the output will respond to the one that occurs first. This can
produce unexpected limit initiation therefore you should be careful to avoid this type of programming
duplication.
The limits are always programmed in:
- rate limit in Hertz 000000.00 Hz
- total limit in impulses 00000000. Imp.
In order to program the limits it is necessary to know the K-factor of the transmitter.
For example:
A flow meter has a K-factor of 8000 imp/Gal. Limit 1 should
turn on when ever the flow exceeds 3.22 GPM and limit 2
should turn on when ever the totalized flow has reached 2.50
Gallons.
8000 * 3.22 imp
LIMIT 1 = = 429.33 Hz
60 sec
LIMIT 2 = 2.50 * 8000 imp = 20000 imp
To check whether a limit is ON or OFF, go into the Status Display Mode for the channel in question.
(see page 8)
WARNING!! Never enter two different limits, Rate and Total, under the same limit number.