Honeywell AWM5104VN Microbridge Mass Airflow Sensor: Complete Technical Guide

7 январь 2026 г.

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What is the Honeywell AWM5104VN?

The AWM5104VN is a Honeywell Microbridge thermal mass air-flow sensor mounted in a moulded flow tube — the complete drop-in flow module: threaded ports both ends under blue dust caps, a venturi waist in the tube where the Microbridge chip samples the flow, and the Honeywell electronics block on top with an 8-pin header marked IN / GND / OUT. The listing rates it at 20 L/min on NPT threads. The record covers 5 modules, new in Honeywell boxes (batch DJY0942, box code 2520 / 102785863, made in China, static-sensitive labelled). All 15 photos and 1 video below show these exact units.

3 min readContent reviewed 7 October 2026

Part details

AWM5104VN, as marked on the unit and box
Field	Value
Sensor	Honeywell AWM5104VN, AWM (Microbridge) mass air-flow family
Flow rating	20 L/min (as listed)
Ports	Threaded tube ends (NPT pattern), blue dust caps fitted
Sense section	Moulded venturi waist with Microbridge chip downstream
Electrical	8-pin header on the electronics block, pins marked IN / GND / OUT
Marking	Honeywell on the module face
Box label	AWM5104VN, DJY0942, 2520, 102785863
Origin / compliance	Made in China, RoHS, static-sensitive handling label
Paperwork included	AMP interconnection-system literature sheet (connector selection, SS-12143)
Quantity	5 modules, new in boxes
Shipping weight	0.5 kg total

Scroll sideways to see the full table.

Identifications are read from the module printing, the pin silkscreen and the box labels in the photo set.

How the Microbridge measures flow

The sensing trick sits in the venturi waist: gas accelerates through the narrowed bore, and a Microbridge chip — two resistors bridge-mounted on a thin membrane — sits in that stream. The chip holds one resistor slightly heated; moving gas carries heat from the upstream element to the downstream one, and the electronics block converts that imbalance into a voltage on the OUT pin proportional to mass flow. Because the measurement is thermal, the reading is a mass flow, not just a velocity, so pressure and temperature swings matter far less than they would to a paddle or vane meter. The 8-pin header carries supply, ground and the output (the silkscreened IN / GND / OUT on the module face), and the moulded tube gives the chip a fixed geometry so the calibration printed for the 20 L/min rating holds without field plumbing. Matching the wiring connector is where the AMP literature sheet in each box helps — it catalogues the latch-detente housing system that mates the header. KOEED lists this sensor directly: see the AWM5104VN product page.