Ultrasonic

OCS-3F100PUltrasonic Gas Sensor

Name: OCS-3F100P Ultrasonic Gas Sensor
Brand: Winpower
SKU: OCS-3F100P

PSA Oxygen Concentrator / Particle Counter

Ultrasonic gas sensor platform with 0–100 L/min flow range and built-in atmospheric pressure compensation. Available in two firmware variants: O₂ + flow for large PSA concentrators, or flow-only for high-flow particle counters.

0–100 L/min flow 21–95.6% O₂ (PSA firmware) ±2% accuracy Flow-only firmware for particle counters UART output

Download Datasheet Request UART Protocol

Product Introduction

The OCS-3F100P ultrasonic gas sensor is the latest sensor introduced by Winpower Technology Co., Ltd. It uses the ultrasonic principle to detect gas flow, with built-in atmospheric pressure compensation. The same hardware is suitable for two different application firmwares: for large PSA oxygen generators it measures O₂ concentration and flow; for particle counters it runs dedicated particle-counter firmware and measures flow only. Output is via UART digital interface. It supports both working-condition and standard-condition flow measurement modes.

Features

High accuracy — ±2.0%FS concentration accuracy across a wide measurement range
Strong anti-interference ability — maintains stable performance in complex environments
Quick response — 500ms UART data reporting interval
Long-term stability — no need for regular calibration adjustments
Long operating life — durable design for extended use
Built-in atmospheric pressure compensation — 300mbar to 2500mbar compensation range
Wide flow range — 0–100 L/min detection capability

Applications

Large oxygen generators (O₂ + flow firmware)

Particle counters (flow-only firmware)

PSA oxygen concentration detection systems

Industrial gas flow monitoring

Precautions for Use

Ensure that the detected gas is water-free, oil-free, and dust-free.
The sensor shall not be disassembled without the permission of the manufacturer; sensor damage caused by unauthorized disassembly will not be guaranteed or repaired.
This sensor and data manual may change due to technical improvement of the product without prior notice.
Voltage data and air source data need to be provided before purchase.
A bacterial filter should be added to the air intake of the sensor to filter the gas, and a check valve should be added to the air output of the sensor to avoid backward water absorption.

Technical Specifications

Range of Concentration	21.0% – 95.6%
Concentration Resolution	0.1%
Concentration Accuracy	±2.0%FS @ (5 – 55)°C
Range of Flow	0 – 100 L/min
Flow Resolution	0.1 L/min
Flow Accuracy	±0.3 L/min or 5% of reading, whichever is greater
Pressure Compensation Range	300mbar – 2500mbar
Sample Gas Requirements	Anhydrous (no condensation); dust filtration (<1μm)
UART Data Spacing Time	500ms
Warm-up Time	Sensor works as soon as power on
Digital Output	9600bps UART, 3.3V TTL level
Inlet and Outlet Direction	Arrow mark
Working Temperature	5 – 50°C (non-condensing)
Storage Temperature	-20 – 65°C (non-condensing)
Working Humidity	0 – 95%RH (non-condensing)
Power Supply	DC 5 – 12V, 50mA
Dimensions	79mm × 34mm × 26.1mm (L × W × H)
Weight	18g

Connectors

Connector Overview

Connector	Name / Function	Description
J1	Power and UART Communication Interface	Combined power input and UART digital signal output for concentration, flow, temperature, and pressure data

Table 1: Power and UART Communication Interface J1

Pin	Function
Pin 1	DC 5 – 12V power input
Pin 2	RXD
Pin 3	TXD
Pin 4	GND

Dimensions

Dimensions: 79mm × 34mm × 26.1mm (L × W × H). Unit: mm, Tolerance: ±0.2mm.

Packaging

Inner Box

Capacity: 30PCS / layer × 5 layers = 150PCS
Dimensions: 42 × 30 × 24cm

Shipping Carton

Dimensions: 50 × 32 × 44cm
Contains: 2 inner boxes (150 × 2 = 300PCS)
Net weight: 5KG
Gross weight: 7.2KG

UART Communication Protocol

The UART communication protocol and integration guide for OCS-3F100P is available upon request. Please contact our engineering team for the complete technical documentation.

For inquiries: Request Quote | Technical Support