Posifa PMFc40000 Analog Mass Air Flow Sensor Series
Analog mass air flow sensor alternatives to Honeywell AWM43600V-2 / AWM43300V. PMFc43300V: 1,000 sccm full scale; PMFc43600V: 6 SLPM full scale. Nominal 10 V supply, analog output approximately 1–5 V. Models have materially different pressure drops.
Source and ordering verification
Original PMFc40000 manufacturer datasheet · Manufacturer’s current documentation index.
Safety distinction: This OEM flow component is not presented as an ATEX or IECEx approved finished gas detection device. Check the exact model, flow direction, electrical signal and calibration medium before substitution.
PMFc40000 — matching PMFc43300V and PMFc43600V
The Posifa PMFc40000 analog family has distinct PMFc43300V (around 1,000 sccm) and PMFc43600V (around 6 SLPM) examples. Both are linked to Honeywell AWM43x00 replacement use cases, but different calibrated spans and pressure losses prevent one universal substitution. Confirm the roughly 10 V supply and 1–5 V output transfer function for the exact suffix before replacing a host sensor. The pictured PMF4000 illustrates the family only, not the exact PMFc40000 package.
PMFc40000 — AWM43xxx replacement with sharply different pressure losses
| Specification / variant | Manufacturer evidence | Engineering decision |
|---|---|---|
| PMFc43300V | 0–1,000 sccm full scale; typically 600 Pa pressure drop at 1,000 sccm | Suitable only when host pressure budget supports the actual flow restriction. |
| PMFc43600V | 0–6 SLPM full scale; typically 9,000 Pa pressure drop at 6 SLPM | Fifteen-times greater loss than PMFc43300V at their respective full-scale points; do not treat mechanical variants interchangeably. |
| Analog transfer tables | 1 V zero to 5 V at model full scale, nonlinear intermediate values (1,000-sccm version: 100→2.49V; 500→4.43V) | Use model-specific calibration table, not a single linear percentage mapping, for midscale precision. |
| Electrical specification | 8–14 VDC supply, recommended 10 V, 22–24mA operating, 10–15 ms sensor response | No generic 5-V-only supply; match analog ADC input and host regulator. |
| Limits and material | 25–100 psi common-mode specification, silicone-carbide/silicon/epoxy/PPS/FR4 sensor path | A shared family housing image does not verify true connection dimensions or wetted-media compatibility. |
Exact SKU and system qualification
Replacement references include Honeywell AWM43600V-2 and AWM43300V; output and mechanical interchangeability depend on the particular class. The AirAlign photo remains labelled as another Posifa PMF4000 sibling and must not be relabelled as exact PMFc40000.
Original manufacturer references: Posifa PMFc40000 Apr 2020 OEM data sheet.