Product Manual

ManualsBrandsGPI ManualsControl Valves + Fuel MetersDigital Water Meter — 1 1/2in. Inlet/Outlet

1

2

3

4

5

6

7

8

9

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.