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Item # 07-0387, O2CapB Oxygen/CO2 Analyzer, Single Channel

The O2Cap family integrates an Oxigraf oxygen sensor with a NDIR CO2 sensor for dual gas measurements for research, industrial and laboratory measurements. Measure Oxygen concentrations from 5-100% and CO2 from 0-10%. Perform capnography tests with fast breath by breath measurement. The units come with a pump for gas sampling system, bright vacuum fluorescent alphanumeric display (VFD), touch panel keypad, a rear 0-1VDC analog output for O2 readings, and either a rear terminal strip with limit detection relays and 4 – 20 mA analog outputs or a second CO2 analog output, and a RS232 digital interface.

The model O2Cap and O2CapB have luer type front panel gas sample input fitting for research applications. The model O2CapD have CPC O-Ring quick connect gas sample fittings for industrial applications.

All of the Model O2Cap, O2CapB and O2CapD include a sampling pump that will draw a sample from atmospheric pressure; with an external flow control valve, it will accommodate pressurized gas up to 1.3 psig (17 psia or 120 kPa).

An optional gas sampling valve allows the pump to draw a sample for a programmable number of seconds. This feature is useful for sampling from Modified Air Packaging (MAP). Please contact Oxigraf for more information on this option.

O2Cap comes with LEUR fitting and gas sampling pump. P/N 07-0193

O2CapB replaces the Terminal Strip with a second BNC analog output for CO2 on the regular O2Cap. P/N 07-0387

O2CapD come with CPC O-ring fitting and gas sampling pump. P/N 07-0358

Performance Specifications  · Specifications  · Mechanical Specifications  · Performance Conditions  · Electrical Specifications  · Features & Applications

Performance Specifications


5 to 100% Oxygen, 0 to 10% CO2.


0.1% in 5 to 100% range (O2), 0.01% in 0 to 10% ranges (CO2)

Sample Flow

50-500 ml/min, internal pressure regulator for 1-75psig


Stability (4 hrs)

±0.1% CO2 after 5 minute warm up
±0.1% in Oxygen LN mode

±0.3% Oxygen in XC mode

Mechanical Specifications

Dimensions (W x H x D)

7.5 x 3.0 x 11.0 in
190 x 76 x 280

Weight Instrument

5 Pound

Weight Power Module

1.5 Pound

Performance Conditions

Ambient Temperature (Operating)

5 to 40 ºC
40 to 102

Ambient Temperature (Storage)

-20 to 60 ºC
-2 to 140

Cell Pressure1

10.2 to 17.4 psi
70 to 120
500 to 900

Warm-up for Full Accuracy

5 min


Two point calibration required after change in altitude of 2000 feet

Room Humidity

0 to 95%, non-condensing
1 Limited by internal pressure regulator

Electrical Specifications

Sensor Power Requirements

1.5 A

External Power Supply

47 to 63 Hz
95 to 250 VAC

Features & Applications
  • Internal Sampling Pump
  • Analog 0 to 1 VDC O2 reading and Analog 1-5 VDC CO2 reading via rear panel BNC connectors
  • Digital RS-232 output.
  • Samples and displays oxygen from 5 to 100% without range switching.
  • Calibrates electronically using 10%O2/5% CO2 and 100% O2 cal gases.
  • Electronic flow meter and display included.
  • Front panel Luer fitting.
  • Fast Response (< 1 sec) for prompt analysis.
  • Pressure and temperature correction automatically.
  • No false oxygen readings with Ar, H2O, CO2, CO, or hydrocarbons.
  • Rugged laser diode absorption spectroscopy oxygen analysis.
  • Measures at low flows of 50 to 350 ml/min, conserving product gas.

 Options & Accessories (O2Cap/C/D) 

Options & Accessories (O2Cap/C/D)

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