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FEATURES

• 

1500 psi rating

• 

NPT Threads

• 

Large 6-digit LCD display with two decimal-point 

precision

• 

Dispense total display in pints, quarts, US gallons or 

liters

• 

Unit of measure selectable from the front of register

• 

Totalization in US gallons and liters

• 

Resettable and non-resettable totalizer

• 

Display operation temperature range –4…140° F 

(–20…60° C)

• 

Low battery indicator

• 

Long life field replaceable top load battery

• 

Accuracy of ± 0.5%

• 

Calibration factor programmable from front of register

• 

Calibration factor saved in non-volatile memory

NOTE

: The use of meters in applications other than those 

described in this material may result in inaccuracy and 

possible meter failure. Each meter is designed for use 

with a specific type of fluid. Do not use petroleum-based 

products in a meter designed for water-based fluids, or 

water-based fluids in a meter designed for petroleum-

based products. It is also important that fluids be properly 

filtered before entering the meter. Foreign particles will 

cause inaccuracy or malfunction of the meter. Warranties 

are void in the circumstances described above.

Limited Warranty Policy

Great Plains Industries, Inc. 5252 E. 36

th

 Street North, Wichita, KS USA 67220-

3205, hereby provides a limited warranty against defects in material and workman-

ship on all products manufactured by Great Plains Industries, Inc. This product 

includes a 1 year warranty. Manufacturer’s sole obligation under the foregoing 

warranties will be limited to either, at Manufacturer’s option, replacing or repairing 

defective Goods (subject to limitations hereinafter provided) or refunding the pur-

chase price for such Goods theretofore paid by the Buyer, and Buyer’s exclusive 

remedy for breach of any such warranties will be enforcement of such obligations 

of Manufacturer. The warranty shall extend to the purchaser of this product and 

to any person to whom such product is transferred during the warranty period.
The warranty period shall begin on the date of manufacture or on the date of 

purchase with an original sales receipt. This warranty shall not apply if:

A. 

the product has been altered or modified outside the warrantor’s duly 

appointed representative;

B.  the product has been subjected to neglect, misuse, abuse or damage 

or has been installed or operated other than in accordance with the 

manufacturer’s operating instructions.

To make a claim against this warranty, contact the GPI Customer Service Depart-

ment at 316-686-7361 or 888-996-3837. Or by mail at:

Great Plains Industries, Inc.

5252 E. 36

th

 St. North,  

Wichita, KS, USA 67220-3205

If you are outside North or South America contact:

Great Plains Industries – Australia

1/16 Atkinson Road,  

Taren Point NSW 2229, Sydney, Australia

The company shall, notify the customer to either send the product, transportation 

prepaid, to the company at its office in Wichita, Kansas, or to a duly authorized 

service center. The company shall perform all obligations imposed on it by the 

terms of this warranty within 60 days of receipt of the defective product.
GREAT PLAINS INDUSTRIES, INC., EXCLUDES LIABILITY UNDER THIS WAR-

RANTY FOR DIRECT, INDIRECT, INCIDENTAL AND CONSEQUENTIAL DAMAGES 

INCURRED IN THE USE OR LOSS OF USE OF THE PRODUCT WARRANTED 

HEREUNDER.
The company herewith expressly disclaims any warranty of merchantability or 

fitness for any particular purpose other than for which it was designed.
This warranty gives you specific rights and you may also have other rights which 

vary from U.S. state to U.S. state.
Note: In compliance with MAGNUSON MOSS CONSUMER WARRANTY ACT – 

Part 702 (governs the resale availability of the warranty terms). 

920841-02

10/14

©2014, Great Plains Industries, Inc. All rights reserved.  

  

and FLOMEC

TM

 are trademarks of Great Plains Industries, Inc.

 

SPECIFICATIONS

Meter Model:

LM51DN

Maximum Flow:

8 GPM (30 LPM)

Minimum Flow:

0.25 GPM (1 LPM)

Operating Pressure (Max.):

1500 psi (103 bar)

Operating Pressure (Min.):

5 psi (0.35 bar)

Operating Temperature (Max.):

140

°

 F (60

°

 C)

Operating Temperature (Min.):

-4

°

 F (-20

°

 C)

Accuracy:

±

 0.5%

Weight:

2.0 lb. (0.9kg)

Inlet & Outlet Connections:

1/2" NPTF

DIMENSIONS

Dimension

Size

A

4.04 in. (102.6 mm)

B

3.27 in. (83 mm)

C

2.99 in. (75.8 mm)

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