
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
- Category
- Flow Meter, Variable Flow Meter
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.
Specifications
| Model | BT-OG series |
|---|---|
| Measuring principle | Positive displacement, twin oval gears |
| Medium | Oil, fuel oil, chemicals, etc. |
| Accuracy | ±0.5% or ±0.2% |
| Nominal diameter | DN8 … DN200 |
| Nominal pressure | PN 1.6 … 6.3 MPa |
| Medium temperature | −10 … 280 °C |
| Medium viscosity | 2–200 mPa·s (standard and high temperature); 2–3000 mPa·s (high viscosity) |
| Transmitter type | Pointer display; pointer with zero return; pointer display with output; LCD |
| Display | Accumulated flow and single measurement (mechanical dial); remote transmission of total and instantaneous flow |
| Power supply | 12 VDC or 24 VDC |
| Output signal | Pulse, 4–20 mA DC, RS485 |
| Error adjustment | Changing gear adjustment |
| Protection class | IP65 |
| Explosion protection | Flame-proof type, Exd IIBT4 |
| Ambient temperature | −20 … 55 °C |
| Body material | Cast iron, cast steel, stainless steel |
| Process connection | Flange, screw, sanitary tri-clamp |
| Pressure rating by body | Cast 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% class | DN10 0.08–0.5; DN25 1–6; DN50 4–24; DN100 16–100; DN200 34–340 m³/h |
| Flow range, high viscosity, ±0.5% class | DN10 0.04–0.2; DN25 0.6–3; DN50 2.4–12; DN100 10–50; DN200 34–170 m³/h |
| Optional | Built-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
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