Model 3000TB​​​

Process Trace Oxygen Analyzer​​​


The Model 3000TB analyzer is a versatile, microprocessor-based instrument for detecting oxygen in a variety of gases. It serves as a general purpose unit.

Three Analysis Range

Three user-configurable ranges are standard, with excellent linearity precluding recalibration when changing ranges. Two fully programmable concentration alarms and relay functions provides the versatility to satisfy nearly any requirement. All features offer a sophistication that assure years of reliable service.

Convenient Outputs

Standard 0-1 VDC and isolated 4-20 mADC outputs are provided for oxygen measurements and range identification. An RS-232C serial port allows the user to introduce span and zero gases through a host computer.


The instruments use a long life Micro-fuel Cell to measure traces of O2 in the sample gas. The sensor sets industry standards for accuracy and sensitivity, and comes with a 1 year warranty. Expected life for the sensor is two years. The sensor is specific to oxygen and accurately monitors gas streams containing up to 100% hydrocarbons. The Micro-fuel Cell produces an output that is linear from 0 ppm to 100% O2 enabling the use of ambient air for calibration. These units can also accommodate the use of a certified ppm O2 span or zero gas which speed calibration when necessary.


  • C    Electrically operated cal/zero valves

  • V    Vacuum service

  • S    Stainless steel cell block


  • NEMA 4/7 rated enclosure

  • RFI hardened

  • Security code protection

  • Microprocessor based electronics

  • Signal output: 0-1 VDC & 4-20 mADC​

  • Programmable Auto Ranging

  • Two fully-adjustable concentration alarms and a system failure alarm

  • Self Diagnostics


​Area Classification
​General purpose bulkhead mount


​Class L-2C, two year life expectancy


Three user-definable ranges (Min: 0-10 ppm FS)


​One system failure alarm contact to detect power, calibration, zero and sensor failure
Two adjustable concentration threshold alarms with fully programmable set points


​± 1% FS at constant temperature


​0.5% of FS


​One LCD screen for setup
One five-digit LED for O2 value


​110 to 220V (user specified), 50/60 Hz

​Operating Temperature

​32° to 122°F (0° to 50°C)


​Signal:         Analytical measurement: 0-1 VDC and 4-20 mADC isolated
Range ID:   0-1 VDC and 4-20 mADC isolated

​Response Time

​99% of FS at 77°F (25°C) < 61 seconds


​11.81"W x 20.28"H x 8.9"D
(29.99 x 51.51 x 22.61 cm)


  • ​Monitoring inert gas blanketing

  • Air separation and liquefaction

  • Chemical reaction monitoring

  • Semiconductor manufacturing

  • Petrochemical process control

  • Quality assurance

  • Gas analysis certification