Bopp & Reuther Oval Wheel Meter Series OP | Precision Flow & Volume Measurement

Oval Wheel Meter OP Series

Founded in 1872, Bopp & Reuther Messtechnik GmbH is a globally recognized leader in precision flow, density, and energy measurement technology. With more than 150 years of experience, the company has built a strong reputation for engineering excellence, German quality, and innovation in industrial measurement solutions.

Headquartered in Mannheim, Germany, Bopp & Reuther develops and manufactures a wide range of instruments, including flow meters, density and concentration meters, energy measurement systems, flow computers, and dosing solutions. These products are designed to meet the highest standards of accuracy, reliability, and durability, making them trusted worldwide in critical industries

Bopp & Reuther Oval Wheel Meter Series OP Series 15-50

Bopp & Reuther Oval Wheel Meter OP Series AG44 / UST

Bopp & Reuther Oval Wheel Meter OP Series 250–1200

Bopp & Reuther Oval Wheel Meter OP Series – F016 / F110 / F018

Bopp & Reuther Oval Wheel Meter Series OP Series 15-50

The Bopp & Reuther Oval Wheel Meter OP 15–50 is a high-precision volumetric flow meter designed for accurate measurement of medium-viscosity liquids such as fuels, oils, and chemical products. Its double-case design, low maintenance requirement, and no auxiliary power operation make it a dependable choice for process industries, refineries, and chemical applications.

The Oval Wheel Meter OP 15–50 by Bopp & Reuther is a direct volumetric measuring instrument engineered for reliable flow and volume measurement of liquids with medium viscosity. Built with robust materials such as stainless steel and cast steel, this series offers outstanding durability even under demanding process conditions.

Operating on the positive displacement principle, the OP series ensures measurement accuracy up to ±0.3% (and optionally up to ±0.15%) — independent of the liquid’s viscosity. It functions without any external power supply in its basic form, yet can also be configured with NAMUR or 24 VDC pulse outputs for advanced integration.

Ideal for petroleum, lubricants, and chemical applications, the OP 15–50 is designed for Zone 1 hazardous areas, featuring no inlet or outlet straight pipe requirements, which allows easy installation even in tight system layouts.

Technical Information

Parameter	Specification
Product Type	Direct volume meter (Double-Case design)
Application	Flow and volume measurement of medium-viscosity liquids
Measuring Accuracy	±0.3% of measured value (optional ±0.15%)
Explosion Protection	Zone 1 (Ex-approved)
Process Temperature	-10°C to +70°C (AG01)
	Up to +90°C / +110°C (AG19 / AG20)
	Up to +170°C with temperature extension
Process Pressure	Up to 40 bar
Housing Material	Stainless steel or cast steel
Wetted Parts	Stainless steel
Power Supply	None (basic model), NAMUR, or 24 VDC
Signal Output / Display	NAMUR pulses (AG19 / AG20), Open Collector (AG01), or mechanical display
Process Connection	Flange according to DIN or ANSI standards
Special Features	Simple operation, no auxiliary energy required, no inlet/outlet pipe sections needed

Options

Pulse Pick-Up Units: AG19, AG20, AG01

Mechanical Local Displays:

Single-pointer totalizer (Type E)

Double-pointer totalizer (Type D)

Mechanical counter (M5)

Mechanical counter with volume pre-setting (M5V)

Applications

Oil & Fuel Distribution: Gasoline, diesel, heating oils, bioethanol

Lubrication Systems: Lubricating and transmission oils

Chemical Industry: Acids, alkaline solutions, and various process chemicals

Industrial Processing: Medium-viscosity raw and finished liquids

Energy & Utility Plants: Monitoring and control of fuel and fluid consumption

Benefits

High Accuracy and Repeatability: Up to ±0.15% precision for custody and process measurements

Independent of Viscosity: Reliable measurement even with changing fluid properties

Maintenance-Free Design: No wear-prone moving parts requiring frequent service

Flexible Installation: No straight pipe sections needed before or after the meter

No Power Required: Operates mechanically or with optional electronic pulse outputs

Robust and Safe: Explosion-proof design suitable for Zone 1 applications

Versatile Display Options: Choose between mechanical totalizers or electronic signal output for system integration

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Bopp & Reuther Oval Wheel Meter OP Series AG44 / UST

The Bopp & Reuther Oval Wheel Meter OP AG44 / UST is a high-accuracy, double-case positive displacement flow meter designed for precise measurement of medium-viscosity liquids. Featuring advanced electronic integration with 4–20 mA / HART® output, NAMUR pulse signaling, and optional LCD display, it offers exceptional reliability, compact installation, and accuracy up to ±0.15% — ideal for process control, fuel management, and chemical dosing applications.

The Oval Wheel Meter OP AG44 / UST by Bopp & Reuther represents the next generation of direct volumetric flow measurement technology for medium-viscosity liquids.

Built with a rugged double-case housing in stainless steel or cast steel, this meter delivers exceptional accuracy (±0.3%, optionally ±0.15%), long-term stability, and reliable performance even under demanding industrial conditions.

Its non-intrusive oval wheel design ensures accurate readings independent of viscosity, while the 10-point linearization capability enhances calibration precision. The OP AG44 / UST features NAMUR or 24 VDC two-wire technology, allowing seamless integration into digital control systems. The UST version includes a clear LCD display for local indication, while the AG44 variant provides a blind (pulse-only) configuration.

Thanks to its no-straight-pipe requirement, easy installation, and explosion-proof certification for Zone 1, this model is a preferred choice for petrochemical, chemical, and energy industries requiring reliable and maintenance-free liquid measurement.

Technical Information

Parameter	Specification
Product Type	Direct volume meter (Double-Case design)
Application	Flow and volume measurement of medium-viscosity liquids
Measuring Accuracy	±0.3% of measured value (optional ±0.15%)
Explosion Protection	Zone 1 (Ex-approved)
Process Temperature	-10°C to +110°C
Process Pressure	Up to 40 bar (on request)
Housing Material	Stainless steel or cast steel
Wetted Parts	Stainless steel
Power Supply	NAMUR or 24 VDC (2-wire technology)
Output / Display	4–20 mA / HART®, NAMUR pulses, or LCD Display
Process Connection	Flanges according to DIN or ANSI
Special Features	Easy installation, no inlet/outlet pipe sections required, 10-point linearization

Options

Pulse Pick-Up: AG44 (blind version)

Electronic Local Display: UST with LCD indication and HART® output

Applications

Oil & Gas: Custody and process measurement of heating oils, diesel, and lubricants

Chemical Industry: Flow monitoring of solvents, acids, and alkalis

Energy & Utilities: Process control for fuel and coolant distribution

Manufacturing & Plant Operations: Batch control and dosing of process fluids

Transportation & Storage: Loading/unloading measurement for tankers and depots

Benefits

High Accuracy: ±0.3% standard, optionally ±0.15% with linearization

Digital Integration: Supports HART® and 4–20 mA output for modern control systems

Easy Installation: No straight inlet or outlet sections required

Versatile Configuration: Choose between blind pulse output (AG44) or LCD display (UST)

Explosion-Proof Certified: Safe for Zone 1 hazardous environments

Durable Construction: All stainless-steel wetted parts for chemical compatibility

Maintenance-Free Design: Reliable mechanical operation with minimal servicing needs

Enhanced Calibration: 10-point linearization ensures maximum accuracy across flow ranges

More details

Bopp & Reuther Oval Wheel Meter OP Series 250–1200

The Bopp & Reuther Oval Wheel Meter OP 250–1200 is a high-performance volumetric flow meter built for precise measurement of medium-viscosity liquids. Its robust double-case design, maintenance-free operation, and no power requirement make it ideal for large-scale industrial processes, including oil distribution, chemical production, and energy applications.

The Oval Wheel Meter OP 250–1200 by Bopp & Reuther is a direct volume (positive displacement) meter designed for accurate flow and total volume measurement of liquids with medium viscosity — including fuels, lubricants, solvents, and process chemicals.

Constructed from cast steel or stainless steel, with stainless steel or aluminum wetted components, the OP 250–1200 ensures durability, corrosion resistance, and long service life even in harsh process environments. It delivers an accuracy of up to ±0.3%, or optionally ±0.15% with calibration, maintaining stability across variable flow conditions.

The meter operates mechanically without external power, making it both cost-effective and reliable. Optional configurations include NAMUR or 24 VDC-powered pulse transmitters, mechanical or electronic totalizers, and multiple display versions for process integration.

With no straight inlet or outlet pipe requirements and explosion-proof Zone 1 certification, the OP 250–1200 offers superior flexibility and safety for industrial and custody transfer applications.

Technical Information

Parameter	Specification
Product Type	Direct volume meter (Double-Case design)
Application	Flow and volume measurement of medium-viscosity liquids
Measuring Accuracy	±0.3% of measured value (optional ±0.15%)
Explosion Protection	Zone 1 (Ex-approved)
Process Temperature	-10°C to +60°C / +70°C (AG01) / +90°C / +110°C (AG19 / AG20)
Process Pressure	16 bar (up to 40 bar on request)
Housing Material	Stainless steel or cast steel
Wetted Parts	Stainless steel, aluminum
Power Supply	None (basic model), NAMUR, or 24 VDC
Signal Output / Display	NAMUR pulses / Open collector pulses / Mechanical display (single pointer E, double pointer D, mechanical totalizer M5 / M5V)
Process Connection	Flange according to DIN or ANSI standards
Special Features	Simple operation, no auxiliary energy required, no inlet/outlet pipe sections needed

Options

Pulse Pick-Up Units: AG19, AG20, AG01–08

Mechanical Local Displays:

Single-pointer totalizer (E)

Double-pointer totalizer (D)

Mechanical totalizer (M5)

Mechanical pre-set totalizer (M5V)

Applications

Oil & Gas: Measurement of gasoline, heating oil, diesel, and lubricants

Chemical Processing: Flow measurement of solvents, alkalis, and acids

Energy & Power Plants: Monitoring of fuel, oil, and process fluids

Manufacturing: Batch and dosing measurement in production lines

Marine & Logistics: Fuel consumption and transfer operations for vessels and tankers

Benefits

High Precision: ±0.3% standard accuracy, optionally ±0.15% with calibration

Maintenance-Free Operation: Simple mechanical design ensures reliability

No Power Required: Basic version functions without electrical supply

Flexible Integration: Optional NAMUR and 24 VDC signal outputs for process automation

Easy Installation: Works without straight inlet/outlet sections

Durable & Safe: Cast/stainless steel body, Ex Zone 1 certified for hazardous areas

Adaptable Design: Wide range of totalizers and pick-up configurations

Cost-Effective: Long lifespan and minimal maintenance reduce operating costs

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Bopp & Reuther Oval Wheel Meter OP Series – F016 / F110 / F018

The Bopp & Reuther Oval Wheel Meter OP – F016 / F110 / F018 is a precision positive-displacement flow meter engineered for accurate measurement of medium-viscosity liquids. Featuring digital intelligence, linearization up to 15 points, and optional 4-20 mA / MODBUS output, it ensures reliability, safety, and flexibility for today’s process and transfer applications.

The OP – F016 / F110 / F018 Series represents Bopp & Reuther’s latest innovation in oval-wheel volumetric flow measurement, combining mechanical precision with advanced electronic signal processing.

Designed for industrial environments requiring Ex Zone 1 protection, this meter delivers accuracy up to ±0.3%, optionally ±0.15%, across a wide temperature and pressure range.

Its double-case construction ensures long-term stability even under heavy-duty operation. The unit operates with battery, NAMUR, or 24 VDC power, providing multiple output formats including 4-20 mA / MODBUS, NAMUR pulses, or a local LCD display.

Thanks to its 8- to 15-point linearization, the OP-F Series achieves enhanced calibration precision — ideal for custody transfer, batching, and process control.

With no requirement for straight inlet or outlet pipe runs, installation is simple, compact, and cost-effective. The robust stainless-steel or cast-steel housing, combined with stainless-steel or aluminum wetted parts, ensures chemical compatibility and durability in demanding service conditions.

Technical Information

Parameter	Specification
Product Type	Direct volume meter (Double-Case design)
Application	Flow and volume measurement of medium-viscosity liquids
Measuring Accuracy	±0.3 % (optional ±0.15 %)
Explosion Protection	Zone 1 (Ex-approved)
Process Temperature	–10 °C to +60 / 70 °C (F016 / F110 / F018)
Process Pressure	16 bar (up to 40 bar on request)
Housing Material	Stainless steel or cast steel
Wetted Parts	Stainless steel, aluminium
Power Supply	Battery, NAMUR, or 24 VDC
Output / Display	4–20 mA / MODBUS, NAMUR pulses, LCD display
Process Connection	Flange according to DIN or ANSI
Special Features	Easy installation, 8–15 point linearization, no inlet / outlet pipe sections required

Options

Pulse Pick-Up Modules: AG 50L, AG 19L, AG 20L

Electronic Local Displays: F016 | F110 | F018

Applications

Oil & Gas: Measurement of diesel, lubricants, biofuels, and heating oils

Chemical Industry: Monitoring of solvents, acids, alkalis, and additives

Energy & Utilities: Process fluid control and fuel management

Manufacturing & Batching: Dosing and volume monitoring for process systems

Transport & Storage: Loading and unloading measurement for tank operations

Benefits

High Precision: Up to ±0.15 % measurement accuracy with multi-point linearization

Smart Electronics: Supports 4–20 mA and MODBUS communication for process integration

Flexible Power Options: Operates on battery, NAMUR, or 24 VDC supply

No Straight Pipe Sections Needed: Compact and easy to install in any layout

Explosion-Proof Design: Certified for Zone 1 hazardous locations

Maintenance-Free: Rugged mechanical design ensures long service life

Durable Construction: Stainless steel and aluminium components for chemical resistance

Enhanced Calibration: 8–15 point linearization improves accuracy across flow range

More details

Brands

Product Types

Industries We Serve

Oval Wheel Meter OP Series

Bopp & Reuther Oval Wheel Meter Series OP Series 15-50

Bopp & Reuther Oval Wheel Meter OP Series AG44 / UST

Bopp & Reuther Oval Wheel Meter OP Series 250–1200

Bopp & Reuther Oval Wheel Meter OP Series – F016 / F110 / F018

Bopp & Reuther Oval Wheel Meter Series OP Series 15-50

Benefits

Bopp & Reuther Oval Wheel Meter OP Series AG44 / UST

Benefits

Bopp & Reuther Oval Wheel Meter OP Series 250–1200

Benefits

Bopp & Reuther Oval Wheel Meter OP Series – F016 / F110 / F018

Benefits