Flow > Flowmeters > GPI Flomec DP490 and DP525


GPI Flomec DP490 and DP525 Insertion Impeller Flowmeters

Great Plains Industries' Flomec DP stainless steel  insertion impeller flowmeters measure the flow of water, fuel, and other low viscosity liquids. When the insertion flow meter is installed, 1/8 of the meter head goes into the pipe, resulting in very little pressure drop.

The DP insertion impeller meter is commonly used for HVAC, hot and chilled water, fire systems, water distribution, boiler and chiller feed water and industrial chemicals.

Key Specifications

  • Simple flow measurement for clear fluid applications
  • Suitable for pipe sizes from 1.5" to 100"
  • Flow ranges from 4 to 780,000 USGM (0.25 to 49000 liters/sec)
  • Intrinsically safe model available
  • DP525 version suitable for hot tap installation
  • Integral 4-20mA output option, quadrature pulse output option and bi-directional flow measurement

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Make one selection from each table section below. A finished catalog number looks like this: DP490-S11-221C-G5

Description Catalog Number
Pipe Size 1.5" to 36"
2" to 100"
Rotor/Bearing Materials PEEK high temperature rotor (300° F) with stainless steel rotor shaft
PVDF rotor with 316 SS rotor shaft (standard)
O-Ring Materials FKM (Viton) standards, 5x to 400°F
Buna-N (Nitrile), -40X to 250° F
_ _1-
_ _4-
Temperature Limits 260°F available with electrical connections 5, 6 & PEEK rotor only
300° F NPN output only (available with Electrical Connection 5 and PEEK rotor only)
212° F standard, (185° F maximum for non magnetic output type 4)
176° F for non magnetic pickup type 4
2_ _ _
3_ _ _
5_ _ _
8_ _ _
Process Connection 1-1/2" (DP490) or 2" (DP525) NPTM thread
2" NPTM thread (DP490)
_2_ _
_4_ _
Pick-Up Type NPN open collector and voltage pulse (standard)
NPN open collector(s) only (for temp code 3 or QP option)
Reed switch only (may be sued with an I.S. barrier or instrument in hazardous areas)
Non magnetic rotor with NPN output (for liquids with ferrous impurities, needs power)
NPN open collector & Reed switch
Quadrature pulse output (requires F15 option for bi-directional flow capability)
_ _1_
_ _2_
_ _3_
_ _4_
_ _8_
_ _9_
Electronic Connections Flying cable (5 ft. on DP490, 3 ft. on DP525)
Terminal box on stem kit (add this for integral output option FI, 4-20 mA output)
3/8" NPT stem kit (price included with integral options B2, B3, R3, and R4)
1" NPT stem kit (fro G5, G6, and G7)
_ _ _C
_ _ _5
_ _ _6
_ _ _7
Integral Options Rate/Total Display with pulse output and optional external power
Rate/Total Display with 4-20 mA output
Loop-powered 4-20 mA analog output
BT11 dual totalizer (with scalable pulse output)
Intrinsically Safe BT11 including output (IECEX & ATEX)
Intrinsically safe RT14 with all outputs (IECEX & ATEX)
RT40 large LCD flow rate totalizer (scaled pulse and backlighting)
F115 backlit bidirectional flow, rate/totalizer, pulse out, 4-20 mA
F018 backlit rate/tot, pulse, 4-20 mA, 10-point linear, HART
F018 intrinsically safe backlit rate/tot, pulse, 4-20 mA, 10-point linearization, HART


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