Variable Flow Meter

Oval Flow Meter

Model BT-OG

Oval gear flow meter for oils, fuel oil and chemical liquids, measuring volume by positive displacement with ±0.5% (option ±0.2%) accuracy, sizes up to DN200, low pressure loss and standard, high-temperature and high-viscosity versions.

Brand
Bont Technologies

Overview

About the Oval Flow Meter BT-OG.

The oval flow meter is a positive displacement volume meter for oils, fuel oil, chemicals and other liquids. Its measuring element is a pair of high-precision toothed oval gears, driven by the flowing medium and meshing with each other. Each rotation of the gear pair transports a defined volume through the measuring chamber, so the number of rotations, detected by a sensor element, is a direct measure of the quantity that has passed. The pocketless metering chamber suits a wide range of liquids including chemicals, and the meter is available with mechanical pointer counters or an electronic display with pulse, 4–20 mA or RS485 output.

Features

  • High accuracy: ±0.5% of reading, with ±0.2% as an option
  • Meter sizes up to DN200 (8")
  • Pocketless metering chamber, suitable for a wide range of liquids including chemicals
  • Low pressure loss and high durability
  • Cast iron, cast steel or stainless steel bodies with flange, screw or sanitary tri-clamp connections
  • Flame-proof version to Exd IIBT4
  • Error adjustment by changing gear

Benefits

  • Low maintenance
  • Reliable meter

Models

  • Standard (BT-A cast iron, BT-E cast steel, BT-B stainless steel): viscosity 2–200 mPa·s, −20 … 100 °C
  • High temperature (BTOG-TA, BTOG-TE, BTOG-TB): viscosity 2–200 mPa·s, 100 … 280 °C
  • High viscosity (BTOG-NA, BTOG-NE): viscosity 2–3000 mPa·s, −10 … 100 °C, ±0.5% accuracy

Applications

  • Petroleum industry
  • Process industry
  • Plastics industry
  • Palm oil mills
  • Chemical industry
  • Food industry

LKS supplies the Bont oval flow meter in Malaysia, with installation, calibration and after-sales support. Contact our engineers for sizing and a quotation.

  • Flow measurement
  • Palm oil mills
  • Oil & gas
  • Chemical processing
  • Hazardous areas

Specifications

ModelBT-OG series
Measuring principlePositive displacement, twin oval gears
MediumOil, fuel oil, chemicals, etc.
Accuracy±0.5% or ±0.2%
Nominal diameterDN8 … DN200
Nominal pressurePN 1.6 … 6.3 MPa
Medium temperature−10 … 280 °C
Medium viscosity2–200 mPa·s (standard and high temperature); 2–3000 mPa·s (high viscosity)
Transmitter typePointer display; pointer with zero return; pointer display with output; LCD
DisplayAccumulated flow and single measurement (mechanical dial); remote transmission of total and instantaneous flow
Power supply12 VDC or 24 VDC
Output signalPulse, 4–20 mA DC, RS485
Error adjustmentChanging gear adjustment
Protection classIP65
Explosion protectionFlame-proof type, Exd IIBT4
Ambient temperature−20 … 55 °C
Body materialCast iron, cast steel, stainless steel
Process connectionFlange, screw, sanitary tri-clamp
Pressure rating by bodyCast iron 1.0 / 1.6 MPa; cast steel 2.5 / 4.0 / 6.4 MPa; stainless steel 1.0 / 1.6 MPa
Flow range, standard cast iron, ±0.5% classDN10 0.08–0.5; DN25 1–6; DN50 4–24; DN100 16–100; DN200 34–340 m³/h
Flow range, high viscosity, ±0.5% classDN10 0.04–0.2; DN25 0.6–3; DN50 2.4–12; DN100 10–50; DN200 34–170 m³/h
OptionalBuilt-in battery (2-year life) for electronic display

Lifecycle support

Installed, calibrated and maintained.

With more than two decades in valves and instrumentation across a diverse range of industries, we keep instruments accurate and valves healthy, because valve health management is vital for plant safety.

  • Installation & commissioning
  • Calibration & testing
  • Maintenance & overhaul
  • Dismantling & replacement

Get in touch

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  1. 01Share your applicationProcess, medium, range and site conditions.
  2. 02Engineer recommendationWe match the right instrument or system to your process.
  3. 03Quotation and supportSupply, installation, calibration and after-sales service.