Text Box: OCS2 
 High Flow Rate Oxygen Sensor 
 Oxygen (±1.5%)
USART, LCD & Analog outputs 
Operating temperature range –45 to +70ºC




1. Oxygen Concentrator sourced O2 mixture. (J1.4 open)

2. Medical/Hospital Ventilator Oxygen/Air mixer sourced O2 mixture. (J1.4 Set to GND)

In circuit configurable to measure the Oxygen content in one of these gasses.


Miniature High Flow rate Oxygen sensor. OCS2 is powered by 8V to 35V / 7mA Unregulated DC Power Supply. OCS2 outputs: UART & 0-5V DC O2 concentration proportional output. Thermal characteristics allow automotive, high altitude and other high Flow rate Oxygen concentration measurement applications. No Flow Alarm output can serve to detect condition of No Flow.                                   




Text Box: info@dgflo.com


 4.6 x 0.8x 0.5” / 45g

Oxygen types

Controlled by J1.4 O2 concentrator or air mixtures with pure O2


 UART, LCD, Analog

Analog O2 output

0 to 5V DC Linearly proportional to 0—100% O2

Power Supply

 Unregulated 8V to 32V DC / 7 mA

Field Calibration

Performed via DigiDISP

 O2 Accuracy

 ±1.5% @ –5 to +45°C; ±2% @ -45°C to –5°C,  45°C to +70°C

O2 Range

 20.8% - 95.7%, 20.8% - 100%

Max pressure

 30 psig

Thermal change response

 1oC per Minute

Thermal Gradientmax

50 K/ meter

Operating Temperature

 -45 to 70°C

Survival Temperature

-85 to +85°C

RS232 transmit Rate

200 bytes per second @ 19200 bits/sec

Calibration Retention

 More than 10 years


Factory. Optional field calibration is provided.

Flow  I/O

Bi-directional  via 1/2” male barbs

Response Time

 20 ms

USART Frame content

O2 [%]

10Hz Square wave output

J1.6 5V P-P

No Flow Alarm

J1.3—Open Drain

Long term display & save

Via  DigiTEST


to other units of Flow

How to convert Volumetric Flow to other units of Flow Rate,

such as gal/min, SLPM