A
Standard Configuration
Integral flanged meter with IP65 transmitter head — one configuration covers liquids, gases, and steam. Contact our engineers for special process requirements.
Integral · Flanged · SS bodyRequest quote for this variant→
02 — Flow Meter
Vortex
Flow Meter
ModelAVFM-100
For steam, gas, and liquids — one meter, multiple media.
Measures volumetric flow by counting vortices shed by a bluff body in the flow path. The shedding frequency is directly proportional to fluid velocity. No moving parts, wide temperature range, and multi-media capability make it ideal for steam and gas service.
Size Range
DN25 – DN200
Accuracy
±1% – ±1.5% of reading
Protection
IP65
Outputs
4–20mA · RS485
Pulse
Pulse
FIG. 01 / AVFM-100
A-01 · v3.2
FIG. 01 / AVFM-100 · Integral configurationSCALE 1:1.2
Product photography
No moving parts
Maintenance-free operation; ideal for dirty or corrosive fluids.
Multi-fluid measurement
Liquids, gases, and steam: one meter, multiple media.
Wide operating range
Process temperatures from −40°C to +330°C.
Digital outputs
4–20mA, Pulse & RS485 for PLCs, data loggers, and monitoring systems.
How it works
Vortex shedding, engineered for versatility.
A bluff body sits across the flow path. As fluid passes, alternating vortices shed from either side — the von Kármán street — at a frequency directly proportional to fluid velocity. A piezoelectric sensor behind the bluff body counts each vortex, converting shedding frequency into volumetric flow.
With no moving parts and stainless steel construction, the AVFM-100 tolerates dirty, corrosive, and high-temperature service with low pressure drop. The same meter body handles liquids, gases, and steam across a 1:6 to 1:30 turndown — one instrument for boiler houses, compressed air, and process lines alike.
FIG. 03 / CROSS-SECTION
SECTION A-A
Applications
Where the AVFM-100 earns its place.
Steam Systems
Compressed Air
Gas Distribution
Chemical Processing
Power & Boilers
HVAC
Water Treatment
Food & Beverage
02 — Technical Specifications
Full specifications —
AVFM-100
The complete technical envelope for the AVFM-100 platform. Material and option combinations are configured per application — request a quote with your process details for a tailored configuration.
A
Measurement
| Principle | Vortex shedding (piezoelectric sensing) |
| Accuracy | ±1% – ±1.5% of reading |
| Turndown ratio | 1:6 – 1:30 |
| Vibration acceleration | Piezoelectric type, 0.2g |
B
Process Conditions
| Line size | DN25 to DN200 (1" to 8") |
| Medium | Gas, liquid, vapor/steam |
| Process temperature | −40°C to +330°C |
| Ambient temperature | −20°C to +55°C |
| Nominal pressure | 16 kg/cm² (standard) · 40 kg/cm² (optional) |
C
Materials
| Body material | SS304 / SS316L |
| Connection | Flanged |
D
Electronics
| Output signals | 4–20mA, RS485, Pulse · HART (optional) |
| Compensation | Without (volumetric flow) · With temperature + pressure compensation (mass flow) |
| Power supply | 24V DC (standard) · 230V AC (optional) |
| Protection class | IP65 |
| Approvals | CE, ISO 9001 |
03 — Configurations
Choose the right configuration
for your installation.
04 — Resources
Downloads
Gate-free PDFs. No forms, no email gates.
05 — Related
Other flow measurement solutions.
Application engineering
Not sure which flow meter
fits your application?
Send us your process details — flow rate, pipe size, media — and our engineers will recommend the right model and configuration.