The Model O2D is a general purpose oxygen analyzer for research, air separation monitoring, and industrial monitoring applications. The Model O2D is designed to measure oxygen in a range of 5-100% levels and operates in XC mode for reliable measurements in the presence of other gases including Ar, He, H2, CO2 and non-condensing H2O vapors. The Model O2D features an easy to use and feature bright LED displays, touch panel controls, easy calibratiom, and has a sampling pump and internal flow meter for monitoring flow in the system. A terminal strip on the rear panel is included for analog relay alarm outputs , 4-20 mA outputs, and an analog 0-1.0 VDC output is on a BNC connector. A DB-9 connector RS-232 digital output provides digital serial communications and is compatible with Oxisoft software. The unit has CPC O-ring quick connect inlet fittings for industrial applications.

Unit of Measure

Performance Conditions

Ambient Temperature (Operating)

N/A 5 to 40 ºC40 to 105 ºF

Ambient Temperature (Storage)

N/A -20 to 60 ºC-2 to 140 ºF

Cell Pressure

N/A 10.2 to 17.4 psi70 to 120 kPascal500 to 900 mmHg700 to 1200 Mb

Warm-up for Full Accuracy

N/A 10 min


N/A Two point calibration required after change in altitude of 2000 feet


N/A 0 to 95%, non-condensing

Performance Specifications


N/A 5 to 100%


N/A 0.1%

Stability (24 hrs)

N/A ± 0.3%


N/A ±0.2%

Cross Sensitivity

N/A ±0.2% in XC mode.

Input Pressure

N/A -0.03 to 1.3 psi


N/A 0 to 250 ml/min pump on 50 to 500 ml/min pump off

Response Time

N/A 150 ms at 250 ml/min, electronic Filter setting 0 to 3

Alarms (4)

N/A Low Flow Oxygen A Oxygen B System Check


N/A Form C (SPDT), 5 A, 250 VAC rating.

Analog Output

N/A 0 – 1 V, 1V = 100%. 4 – 20 mA programmable from front panel

Sample Inlet

N/A CPC O-ring quick connects, 1/8 “ flex tubing barbs std.

Electrical Specifications

Sensor Power Requirements

N/A 0.8 A typical 12 ± 0.6 VDC 2.5 A max

External Power Supply

N/A 100 to 250 VAC 47 to 63 Hz

Mechanical Specifications

Dimensions (W x H x D)

N/A 7.5x3.0x11.0 in190x76x280 mm

Weight Instrument

N/A 4 Pound1.8 Kilogram