Battery Replacement - Omega FTB690A Serie Guía De Usuario

MAINTENANCE
Proper handling and care will extend the life
and service of the meter.
Turbine Rotor
The meter is virtually maintenance-free.
However, it is important the rotor moves freely.
Keep the meter clean and free of contaminants.
If the rotor does not turn freely, apply a penetrat-
ing lubricant on the rotor, shaft, and bearings.
Remove any debris or deposits from the rotor
using a soft brush or small probe. Be careful not
to damage the turbine rotor or supports.
CAUTION
Blowing compressed air through the turbine
assembly could damage the rotor.

Battery Replacement

The computer display is powered by two 3-volt
lithium batteries which may be replaced while
the meter is installed. When batteries are
removed or lose power, the batch and cumula-
tive totals and the field and factory calibrations
are re tained.
If the display becomes dim, blank or the low
battery message appears (see below), replace
the batteries as follows:
1. Remove the four Phillips-head screws from
the face of the meter and lift the faceplate
from the turbine.
2. Remove the old batteries and clean any
corrosion from the terminals.
3. Install new batteries. Make sure the positive
post is in the correct position.
4. When the batteries are replaced, the face-
plate will power ON. Check the display to
ensure normal functions have resumed
before assembling again.
5. Reseat batteries, if necessary, and position
the faceplate on the turbine housing.
To avoid moisture damage, make sure the
seal is fully seated. Tighten the four screws
on the faceplate.
SPECIFICATIONS
Inlet and Outlet:
For NPT Models:
FTB691A-NPT/FTB691A-NPT-P 1/2" NPT
FTB692A-NPT/FTB692A-NPT-P 3/4" NPT
FTB693A-NPT/FTB693A-NPT-P 1" NPT
FTB694A-NPT/FTB694A-NPT-P 1-1/2" NPT
FTB695A-NPT/FTB695A-NPT-P 2" NPT
Design Type: Turbine
Wetted Components:
Housing: PVC
Journal Bearings: Ceramic
Shaft: Tungsten Carbide
Rotor and Supports: PVDF
Retaining Washer: Stainless Steel
Fitting Types: Schedule 80 NPT
Max. Working Pressure: 225 PSIG @ 73° F
U.S. Measurement
Unit of Measure: Gallon
Flow Range:
1/2 inch 1 - 10 GPM
3/4 inch 2 - 20 GPM
1 inch 5 - 50 GPM
1-1/2 inch 10 - 100 GPM
2 inch 20 - 200 GPM
Accuracy: ± 3.0% of reading (Accuracy can
be improved with field calibration)
Operating Temperature: +32° to +140° F
NOTE: Do not allow fluid to freeze inside
meter.
Storage Temperature: –40° to +158° F
Weight:
(Includes Computer Display. Conditioned
Signal Module adds .30 lbs.)
1/2 inch .55 lbs.
3/4 inch .67 lbs.
1 inch .84 lbs.
1-1/2 inch 1.38 lbs.
2 inch 1.78 lbs.
Dimensions - inches (W x H x L):
(Includes Computer Display. Conditioned Signal
Module adds 1.1 inch to height)
1/2 inch 2.0 x 2.8 x 5.5
3/4 inch 2.0 x 2.9 x 5.5
1 inch 2.0 x 3.3 x 6.2
1-1/2 inch 2.3 x 3.9 x 7.6
2 inch 3.5 x 4.5 x 7.9
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