Oval Gear Flow Meter (Model: NKGF-LC-A Series)

Oval Gear Flow Meter (Model: NKGF-LC-A Series)‌

Product Overview‌

The ‌LC-A series oval gear flow meter‌ is a positive displacement flow measurement device designed for high-viscosity fluids, including:

Heavy fuel oils

Resins

Polyols

This mechanical meter features

Local mechanical counter display

Pulse output for remote monitoring

Explosion-proof certification (Exia IIC T6 Ga)

Technical Specifications‌

1. ‌Core Parameters‌

Accuracy‌: ±0.5% (calibrated at 20°C)

Repeatability‌: ±0.1%

Bore Sizes‌: DN10–DN100

Materials‌:

Housing‌: Cast iron / Stainless steel (316L)

Gears‌: Stainless steel (304/316)

Bearings‌: Tungsten carbide

2. ‌Performance‌

Viscosity Range‌: 5–100,000 cP

Pressure Rating‌: 1.6 MPa (standard) / 4.0 MPa (high-pressure variant)

Temperature Range‌:

Medium: -10°C to +120°C

Ambient: -20°C to +60°C

3. ‌Electrical Output‌

Pulse Output‌: NPN open collector (12VDC, 100mA max)

Frequency Range‌: 0–500Hz

Installation Requirements‌

Flow Direction‌: Unidirectional (marked by arrow on housing)

Straight Pipe Runs‌:

Upstream: ≥5× pipe diameter

Downstream: ≥3× pipe diameter

Filter Requirement‌: 80μm mesh upstream

Prohibited Media‌

Abrasives‌: Fluids with solid particles >50μm

Corrosives‌: Hydrofluoric acid, concentrated alkalis

Non-lubricating‌: Liquid CO₂, liquid ammonia

Maintenance Protocol‌

Zero Calibration‌:

Disconnect pulse output

Verify mechanical counter alignment

Gear Inspection‌:

Check for wear every 2,000 operating hours

Replace if backlash exceeds 0.1mm