Dwyer instruments, inc – Dwyer TTM User Manual

Page 2

OPERATION

Batch and Cumulative Totals
The meter maintains two totals. The batch total may be reset to
measure flow during a single use. The cumulative total provides
continuous measurement and my not be manually reset. The
batch total is labeled TTL 1. The cumulative total is labeled TTL2.

When the cumulative total reaches a maximum reading of 9999, it
will automatically reset to zero.

Press the DISPLAY button briefly to switch between the batch and
cumulative totals.

Activate the Meter
Turn the meter ON by starting flow or briefly pressing the DISPLAY
button. The meter will display the batch or cumulative total from
last use.

Press DISPLAY briefly to display the batch total. Hold the DISPLAY
button down for three seconds to reset the batch total to zero.

The meter is programmed to turn off automatically if not used for
more than one minute.

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 penetrating 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.

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000

www.DWYER-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.

Fax: 219/872-9057

e-mail: [email protected]

Battery Replacement
The meter is powered by two AAA alkaline batteries which may be
replaced while the meter is installed. When batteries are removed
or lose power, the batch and cumulative totals reset to zero but the
factor calibration is retained.

If the meter display becomes dim or blank, replace the batteries as
follows:

1. Remove the four Phillips-head screws and lift the faceplate from

meter.

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 batteries are replaced, the faceplate will power ON.

Check the display to ensure normal functions have resumed
before assembling again.

5. Reseat the batteries, if necessary, and position the faceplate on
the turbine housing. To avoid moisture damage, make sure the O-
ring is fully seated. Tighten the four screws on the faceplate.

If the unit should need repairs, please contact Dwyer Instruments,
Inc. before returning unit to review information relative to your
application and obtain a return authorization number. When
returning a product to the factory, carefully package and ship
freight prepaid. Be sure to include a complete description of the
application and problem and identify any hazardous material used
with the product.

MAINTENANCE
Upon final installation of the Series TTM Totalizing Flowmeter, no
routine maintenance is required. A periodic check of the system
calibration is recommended. The Series TTM is not field
serviceable and should be returned if repair is needed (field repair
should not be attempted and may void warranty). Be sure to
include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return
goods authorization number before shipping.

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