Metering Device for Industrial Lubrication Systems

Product Specifications

Technical details and manufacturing context for Metering Device

Definition

A metering device is a critical component within an industrial lubrication system responsible for accurately measuring and regulating the precise amount of lubricant delivered to specific points, such as bearings, gears, or slides. It ensures optimal lubrication, prevents over- or under-lubrication, and contributes to system efficiency and equipment longevity. The device operates by creating a controlled restriction or using a positive displacement mechanism (e.g., piston, gear, or diaphragm) to measure a specific volume of lubricant per cycle or unit time. It is typically actuated by system pressure or an external control signal to dispense the measured quantity. Available materials include stainless steel, brass, and engineering plastics. Key parameters include a flow rate range of 0.1–10 L/min, operating pressure of 1.0–1.6 MPa, accuracy class ±2.5% (ISO 1328), temperature range -20–80 °C, viscosity range 10–500 cSt, electrical supply 24 V DC ±10%, output signal 4–20 mA, ingress protection IP65–IP67 (IEC 60529), material 316L (ASTM A240), connection size G1/4–G1 (ISO 228-1), and weight 1.2–2.5 kg. These values are reference ranges; verify model-specific data with the manufacturer. The device is suitable for various industrial applications where precise lubricant dosing is required. It is not a standalone product but a component integrated into larger systems. Proper selection depends on system demand, operating conditions, and compatibility with the lubricant. Always consult the supplier for detailed specifications and installation guidelines.

Working Principle

The metering device operates by creating a controlled restriction or using a positive displacement mechanism (e.g., piston, gear, or diaphragm) to measure a specific volume of lubricant per cycle or unit time. It is typically actuated by system pressure or an external control signal to dispense the measured quantity. The device ensures that each lubrication point receives the exact amount of lubricant required, preventing waste and ensuring optimal performance. The working principle is based on the physical displacement of lubricant, which is independent of pressure fluctuations, providing consistent dosing. The device may be adjustable to vary the output volume, depending on the system's needs. It is designed to operate within specified pressure, temperature, and viscosity ranges to maintain accuracy. The device's internal components are made from materials that resist corrosion and wear, ensuring long service life. The metering device is a passive component that relies on the system's pressure or an external signal to function, making it reliable and easy to integrate into existing lubrication systems.

Common Materials

Stainless Steel, Brass, Engineering Plastics

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flow Rate Range	0.1–10 L/min	Select based on system demand
Accuracy Class	±2.5 %	Higher accuracy available on requestISO 1328
Temperature Range	-20–80 °C	Exceeding range may damage seals
Viscosity Range	10–500 cSt	Outside range affects accuracy
Electrical Supply	24 ±10% V DC	Reverse polarity protected
Output Signal	4–20 mA	Two-wire loop powered
Ingress Protection	IP65–IP67	For dusty or wet environmentsIEC 60529
Material	316L	Corrosion resistantASTM A240
Connection Size	G1/4–G1 inch	Thread type per orderISO 228-1
Weight	1.2–2.5 kg	Depends on connection size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Metering Chamber
Holds and measures the precise volume of lubricant for each dispensing cycle.

Material: Stainless Steel
Inlet/Outlet Valve Part
Controls the flow of lubricant into and out of the metering chamber.

Material: Brass or Stainless Steel
Actuator (Piston/Diaphragm)
Mechanically displaces the lubricant to achieve the measured output.

Material: Stainless Steel or Engineering Plastic

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	0 to 100 bar
flow rate:	0.1 to 10 L/min
temperature:	-20°C to 120°C
slurry concentration:	Not suitable for slurries - clean fluids only

Media Compatibility

✓ Mineral-based lubricating oils ✓ Synthetic lubricants (PAO, PAG) ✓ Hydraulic fluids (ISO VG 32-68)

Unsuitable: Abrasive slurry environments with particulate contamination

Sizing Data Required

Required flow rate (L/min)
System operating pressure (bar)
Fluid viscosity at operating temperature (cSt)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Calibration drift

Cause: Wear of internal components (e.g., bearings, gears), temperature fluctuations affecting sensor accuracy, or contamination of measurement elements

Seal failure/leakage

Cause: Degradation of O-rings/gaskets due to chemical exposure, thermal cycling, or improper installation leading to process fluid ingress or measurement inaccuracies

Maintenance Indicators

Erratic or inconsistent readings compared to known process parameters
Visible fluid leakage around seals or unusual audible vibrations/humming from the device

Engineering Tips

Implement regular calibration checks using traceable standards and environmental compensation to maintain measurement accuracy
Use compatible sealing materials for the process media and establish preventive replacement schedules for seals based on service hours/cycles

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

ISO 4064:2017 (Water meters for cold potable water and hot water) ANSI/ASME MFC-5.1-2011 (Measurement of Liquid Flow in Closed Conduits Using Transit-Time Ultrasonic Flowmeters) DIN EN 1434 (Heat meters)

Quoted from the published standard.

Manufacturing Precision

Flow rate accuracy: +/-1.5% of reading
Pressure rating: +/-5% of specified value

Quality Inspection

Calibration verification against traceable standards
Leak test under maximum operating pressure

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Metering Device

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CisoLube

Yantai, China (manufacturing per official site; order site to be verified), CN

The dedicated CisoLube DSKH product page specifies dual-line lubrication metering devices with adjustable or fixed output per cycle at each outlet, mechanical indicator pins and optional proximity switches and piston monitoring; the Yantai company publishes production, assembly and testing of lubrication equipment. Confirm cycle, outlets and monitoring options separately; it is not a continuous flow meter and VL-1 single-line specifications must not be mixed in.