Series TFM-LP Liquid Turbine Flow Meter

316SS Body, 0 to 5 VDC and Pulse Outputs

The Series TFM-LP Liquid Flowmeters utilize a turbine wheel and electro-optical detection to convert flow rates into a linear 0 to 5 VDC and pulsed output signal for recording and data logging. A power adapter or mating cable assembly is required for operation

Product Applications

  • Industrial flow monitoring
  • Commercial systems
  • Laboratory equipment

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Code Order
Ships: Consult Factory
Price: $712.00
Liquid turbine flow meter, range .32 to 3.2 GPH (0.02 to 0.2 LPM), 1/4" OD connection. Consult Factory* $712.00 N Order
Ships: 2-3 Weeks
Price: $712.00
Liquid turbine flow meter, range 3.2 to 32 GPH (0.2 to 2 LPM), 1/4" OD connection. 2-3 Weeks* $712.00 N Order


Clean liquids compatible with wetted materials.
Wetted Materials:
316 SS, acetal, sapphire, glass, epoxy, and fluoroelastomer.
±1% of FS.
±1% of FS.
±0.2% of FS.
Temperature Limits:
41 to 131°F (5 to 55°C); Storage: 32 to 158°F (0 to 70°C); Sensitivity: ±0.2% of FS per °C.
Pressure Limits:
500 psig (34.5 bar).
Process Connection:
Compression fitting, see model table on Catalog page.
Power Requirements:
11.5 to 15 VDC.
Power Consumption:
35 mA @ 12 VDC.
Output Signal:
0 to 5 VDC: Minimum 2.5 kΩ load; Pulse: 7.5 VDC peak buffered square wave.
Electrical Connections:
Four-pin power and signal connector. A power adapter or mating cable required for operation. See accessories table.
Enclosure Rating:
IP10 (NEMA 1).
0.86 lb (390 g).
Agency Approvals:


  • Rugged 316 SS body
  • High repeatability with patented microturbine design
  • Design accurately measures flow rates with no zero drift and no required maintenance


Model Number Description Usually Ships* Price Code Order
A-454 115 VAC power adapter and signal cable. 3-4 Weeks $71.00 N Order
A-455 230 VAC power adapter and signal cable. 2-3 Weeks $71.00 N Order
A-456 36" mating cable with spliced leads. Consult Factory $42.00 N Order

Product Literature


Catalog Pages




I use the TFM-LP Series Flow Meters for some of my OEM project. I am using the Stainless Steel Model at this point because the unit is measuring deionized water, 18 meg ohm deionized water in a clean room environment. Can I use the TFP-LP model with Deionized water? The only difference seems to be the material and pressure rating. The DI loop used is at 60 psi so I'm good with the pressure rating. Is the PPS material good for DI water?
The Dwyer Series TFM-LP Liquid Turbine Flow Meter is compatible with DI water. The PPS material, also known as Ryton, is also compatible with DI water.

Photo Downloads

You must be logged in to view this content.
Click here to login to your account.

Product Reviews

Only registered users can write reviews. Please Sign in or create an account