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Monitor flow rate or total flow with Model TM2 Flow Totalizer.
Unit features a four digit flow rate display and an eight digit total-
izing display with a programmable, five position decimal point.
Easily toggle between rate and total with front-panel push-button.
Use scaling factor to define flow rate in engineering units such as
mL/min, L/min, or gal/hr.
Section I. UNPACKING YOUR DISPLAY
Checking for external damage to shipment
Your Model TM2 Display was packed by the manufacturer in
such a way that you should receive it with no damage. If external
damage is noted upon receipt of the package, please contact the
shipping company (not Dwyer Instrument, Inc.) immediately.
Dwyer Instruments, Inc. will not be liable for damage to the
meter once it has left the manufacturing premises.
Unpacking the display
After external inspection of the product, proceed to open the
package from the top, taking care not to cut too deep. Remove
all documentation (if any) resting on top of the packing peanuts.
Inspect all products for concealed shipping damage. If damage
is noted, please contact the shipping carrier and/or Dwyer
Instruments, Inc. to resolve the problem.
When unpacking the products from the shipment, please take
care to remove all products from the box. check thoroughly for
extra cables, power adapters, and other options listed on the
packing slip, if any.
Cautions against damaging the unit
Any damage inflicted on the display by the customer will not be
repaired under warranty by Dwyer Instruments, Inc. See Section
6 for more information.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Series TM2 Digital Rate Meter & Totalizer
Specifications - Installation and Operating Instructions
2-31/32
[75.41]
SPECIFICATIONS
Input: 7.5 VDC max. pulse.
Accuracy: ±0.2%.
Input Impedance: 27 k Ω at 3 VDC.
Totalizer Type: UP count.
Rate Indication Type: Frequency.
Count Input Speed: 10 kHz @ 50% duty cycle.
Totalizing Range: 0.0001 to 100.0000 with five position
decimal point.
Rate Indication Range: 0.001 to 9999 (five position decimal
point).
Update Time: 0.7 seconds.
Display: 8-digit LCD, 7/16" H.
Temperature Limits: 32 to 131°F (0 to 55°C).
Housing Material: Cycolac X-17.
Power: One 3V lithium battery (included).
Average Battery Life: Approximately 5 years.
Weight: 1 Ib (0.5 kg).
Agency Approvals: CE.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin F-41-TM2
1-17/32
[38.89]
1-1/8
[28.58]
1-37/64
[40.08]
www.dwyer-inst.com
e-mail: info@dwyer-inst.com
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Summary of Contents for Dwyer Instruments TM2 Series
- Page 1 Display: 8-digit LCD, 7/16" H. shipping company (not Dwyer Instrument, Inc.) immediately. Temperature Limits: 32 to 131°F (0 to 55°C). Dwyer Instruments, Inc. will not be liable for damage to the Housing Material: Cycolac X-17. meter once it has left the manufacturing premises.
- Page 2 In most cases, this will be the same as the ground of the Flo-Sensor that the Model TM2 Display is connected to. Pin #2: This pin is not used with any Dwyer Instruments, Inc. products. Pin #3: This is the pulse signal input. The Model TM2 accepts all TF10xx Series Flo-Sensor pulse outputs.
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Page 3: Rate Function
Since the Model TM2 operates on pulse inputs, the pulse output (frequency) of the Flo-Sensor at 100% flow must be determined. The Dwyer Instruments, Inc. Model TM2 Display is a versatile This number is located in one of three places:... - Page 4 TIME UNIT FACTOR Figuring the Totalizer Multiplier The Totalizer Multiplier is the number that the Model TM2 uses Current Time Unit Desired Time Unit Factor to interpret pulses into total flow accumulated. To determine this minutes seconds 60.00 factor, first convert the 100% flow rate of the Flo-Sensor (listed minutes minutes 1.00...
- Page 5 Programming the Rate and Totalizer Multipliers to the Model Enter the digits much in the same way as you did for the Totalizer Multiplier. The RST button sets the flashing digit and the T/R Once in program mode as described in Selection 3. a, the Model button selects the flashing digit.
- Page 6 Making minor changes in calibration (of the display) If you notice a small error in the display of either rate or total flow, a small change in the Rate or Totalizer Multiplier may correct the problem. To establish the error, you must provide a constant, steady signal to the Model TM2 Display.
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Page 7: Section Iv. Operating Instructions
Section IV. OPERATING INSTRUCTIONS MAINTENANCE The entire operation of the Model TM2 is dependent on the two Upon final installation of the Series TM2 Digital Rate Meter and buttons located on the front panel. The unit will not operate in Totalizer, no routine maintenance is required. -
Page 8: Wiring Diagrams
TF02 POWER ADAPTER WHITE TERMINAL STRIP (NOT INCLUDED) TO WIRE A TF10xx SERIES FLO-SENSOR AND A TM2 DISPLAY USING THE OPTIONAL TF02 POWER ADAPTER ©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 8/10 FR# R2-443561-00 Rev.1 DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com...
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