5
TM Series Meters
½ inch meter
1 GPM (3.8 LPM)
¾ inch meter
2 GPM (7.5 LPM)
1 inch meter
5 GPM (18.8 LPM)
1 ½ inch meter
10 GPM (37.5 LPM)
2 inch meter
20 GPM (75 LPM)
The use of a uniformly dependable, accurate
calibration container is recommended for the
most accurate results. Due to high flowrate, it
is strongly recommended that calibration be
completed with a combination of volume and
weight using fine resolution scales.
For best results, the meter should be installed
and purged of air before field calibration.
Field Calibration with
Computer Display
Field Calibration and Factory Calibration are
defined in the Operation Section. Factory
calibration settings are programmed into each
computer during manufacturing, using water
at 70° F (21° C). Readings using the Factory
Calibration (FAC) may not be accurate in some
situations, for example, under extreme tem-
perature conditions, non-standard plumbing
configurations or with fluids other than water.
Field Calibration Procedures
(Correction Factor Method)
1. To calibrate, press and hold the CALIBRATE
and DISPLAY buttons for about 3 seconds
until you see FLdCAL. Release both buttons
and you will see CF - 00.0. You are now in
the field calibration mode and values from
-99.9% to +99.9% can be entered.
2. The
+
/– position appears either as an “under-
score” character for plus, or as a “hyphen”
character for minus. The DISPLAY button
selects the position and the CALIBRATE
button toggles this character.
3. The DISPLAY button can then be pushed
to select the numeric positions. Press the
CALIBRATE button to scroll from 0 to 9.
Enter the percentage of change you want
the display to correct. When satisfied with
the value, press both CALIBRATE and DIS-
PLAY buttons simultaneously. CALEnd will
be displayed and unit will go back to normal
operation, less the FAC (factory calibration)
icon.
4. All enabled units-of-measure remain visible
and selectable – the entered correction will
be applied to all enabled units.
5. To return to factory calibration (FAC), press
and hold both CALIBRATE and DISPLAY
buttons for about 3 seconds until FAcCAL
is displayed. Then release buttons. Unit
should return to normal operation and FAC
icon is visible.
Calibration with Conditioned
Signal Output Module
The K-factor of your meter appears on the
calibration report as the number of pulses per
gallon. The factor is determined during produc-
tion using water at 70° F (21° C). This K-factor
may be used for “single point” calibration and
provide acceptable accuracy. However, readings
may not be accurate when using this calibra-
tion method in some situations. For example,
extreme temperature conditions, non-standard
plumbing configurations or with fluids other
than water.
MAINTENANCE
Proper handling and care will extend the life and
service of the meter.
Turbine Rotor
The meter is virtually maintenance-free. How-
ever, it is important the rotor moves freely. Keep
the meter clean and free of contaminants.
If the rotor does not turn freely, apply a pene-
trating 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.
Blowing compressed air through the tur-
bine assembly could damage the rotor.
CAUTION
CAUTION
CAUTION
Do not allow liquids to dry inside the turbine.
Handle the rotor carefully. Small scratches
or nicks can affect accuracy.
www.
GlobalTestSupply
.com
Find Quality Products Online at: