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Dwyer Series TTM

Series TTM Electronic Totalizing Meter

Dwyer Series TTM
Dwyer Series TTM

Batch or Cumulative Totals, Easy-to-Read LCD Display, ±5% Accuracy

Measure batch and cumulative totals in liquid transfer systems with the Series TTM Electronic Totalizing Meter. The meter is designed for any pump, pressure, or gravity feed system with a 3 to 30 GPM (10 to 100 LPM) flow range. View batch and cumulative totals on the large 4-digit LCD display. Batch totals can be reset to measure flow during a single use. The cumulative total will automatically reset to zero when a maximum reading of 9999 is obtained. Models designed for use in water applications are constructed of Nylon® and rated to 150 psig (10.3 bar). Aluminum models are calibrated for fuels and rated to 300 psig (20.7 bar).


  • Service:Compatible liquids.
  • Flow Range:3 to 30 GPM (10 to 100 LPM).
  • Wetted Materials:Bearings: Ceramic; Shaft: Tungsten Carbide; Rotor: Nylon 6-6; Rings: 316 SS; Body: TTM10, 11: Nylon 6-6, TTM20, 21: Aluminum; Other: TTM20, 21: Ceramic Magnet.
  • Accuracy:±5%.
  • Batch Total Maximum:9,999.
  • Cumulative Total Maximum:9,999.
  • Temperature Limits:14 to 130°F (-10 to 54°C).
  • Pressure Limits:Nylon models: 150 psig (10 bar); Aluminum models: 300 psig (20 bar).
  • Pressure Drop:2 psi (0.14 bar) @ 30 GPM (100 LPM).
  • Maximum Particulate Size:350 microns.
  • Display:4-digit LCD, 5/8″ H.
  • Auto Shut-off:After 1 minute.
  • Connections:1″ female NPT.
  • Power:(2) AAA alkaline batteries, installed functional, user replaceable.
  • Battery Life:Battery Life: Approx. 9,000 hours.
  • Weight:Nylon models: 0.4 lb (190 g); Aluminum models: 0.7 lb (340 g).
  • Agency Approvals:CE.


TTM10Electronic totalizing meter, GPM units.Nylon / Water
TTM11Electronic totalizing meter, LPM units.Nylon / Water
TTM20Electronic totalizing meter, GPM units.Aluminum / Gasoline, Diesel & Kerosene
TTM21Electronic totalizing meter, LPM units.Aluminum / Gasoline, Diesel & Kerosene