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O2X1 Galvanic Fuel Cell O2 Transmitter

O2X1 Galvanic Fuel Cell O2 Transmitter

 

The O2X1 is a small, two-wire, loop-powered oxygen transmitter with an advanced galvanic fuel-cell sensor and linear output. It is certified as intrinsically safe and weatherproof to NEC and CENELEC codes.
Besides the standard stainless steel version, the O2X1 is also available in two other packages:


* The first package is a lower-cost package using Delrin for the wetted parts of the transmitter. This
package has the same 1/8 in (3.175 mm) NPTF processes connections as the standard stainless steel O2X1 and is
suitable for all ranges except the lowest PPM oxygen range.

 

* The second package makes the Delrin design suitable for ambient air oxygen monitoring by providing a diffusion
cut-out in the lower manifold to expose the sensor. This package comeswith an aluminum mounting bracket for
mounting the O2X1 to any convenient wall location.

Features

  • Measures oxygen from 1.0 ppm to 25 percent
  • Six field-programmable ranges
  • Repeatability ± 1 percent of span
  • Self-contained cell requires no maintenance
  • 4 to 20 mA, loop powered, 9 to 28 VDC

 

Applications

An oxygen transmitter for use in:

  • Heat treating and bright annealing
  • Process monitoring of gaseous monomers
  • Pure gaseous hydrocarbon streams
  • Inert welding gases
  • Glove box leak detection
  • Ambient air monitor

 

Specifications

Intrinsically Safe (IS) Installation Intrinsically safe installations require an MTL7706 zener barrier, one IS cable and one non-IS cable.
Power Requirements 24 to 28 VDC at 50 mA
Cable
  • OCI-*F-T5 in hazardous area: Two-conductor, twisted pair with connector; 22 AWG; 1100 ft (335 m) maximum cable length.
  • OCG-*F-0 in non-hazardous (safe) area: Three-conductor; 22 AWG; 4000 ft (1219 m) maximum cable length.
Output Total load must equal 250 Ω ±5% (refer to Note 2 of the Hazardous Area drawing below)
Non-Hazardous (Safe) Installation No zener barrier is used.
Process Wetted Materials
  • SS process unit: 316 stainless steel, Viton® O-ring and polytetrafluoroethylene.
  • Delrin® process unit: Delrin, Viton O-ring and polytetrafluoroethylene.
  • Ambient air monitoring unit: Delrin, Viton O-ring and polytetrafluoroethylene.
Power Requirements 9 to 28 VDC loop powered, 0.6 W max
Cable OCG-*F-T5: 2 conductor, twisted pair with connector; 22 AWG; 0.04 Ω/ft; 4000 ft (1219 m) maximum cable length
Output

Max. load (Ω) = [40 Ω x (PSV – 8)] – RC where:

PSV = power supply voltage in VDC, and

RC = cable resistance (22 AWG cable has 0.04 Ω/ft)

Example: Given a 24 VDC power supply and a 1000 ft (305 m) cable (22 AWG, 0.04 Ω/ft),

RC = 1000 ft x 0.04 Ω/ft = 40 Ω

Max. load = [40 x (24 – 8)] – 40

               = [40 x 16] – 40

               = 600 Ω

Sample Flow Rate

1.0 SCFH (500 cc/min) recommended for process units Electrical Classification/Certification

  • Weatherproof, 316 stainless steel and Delrin process packages only: Type 4X/IP66
  • Intrinsically safe, 316 stainless steel package only: Class I, II, III; Division 1; Group A,B,C,D,E,F&G; FM/CSA II 1 G EEx ia IIC T4 (Tamb = –20°C to +60°C); BAS01ATEX1094X 316 stainless steel ATEX compliance with EN50104 from 32°F to 104°F (0°C to 40°C)
European Compliance Complies with EMC Directive 89/336/EEC
Field Programmable

Measurement Ranges

Ppm sensors:

  • – 0 to 10 ppmv O2 (OX-1 or OX-2 in 316 stainless steel package only)
  • – 0 to 100 ppmv O2
  • – 0 to 1000 ppmv O2
  • – 0 to 10,000 ppmv O2

Percent sensors:

  • – 0% to 1% O2
  • – 0% to 10% O2
  • – 0% to 25% O2
Accuracy
  •  ±1% of span at calibration point
  • ±2% of span at the calibration point for the 0 to 10 ppmv range (OX-1 or OX-2 in 316 stainless steel package only)

Repeatability

  • ±1% of span
  • ±2% of span for the 0 to 10 ppmv range (OX-1 or OX-2 in 316 stainless steel package only)
Resolution ±0.1% of span
Linearity ±2% of span
Non-Hazardous (Safe) Installation No zener barrier is used.
Operating Temperature 32°F to 113°F (0°C to 45°C)
Ambient Temperature Effect ±3% of reading over operating temperature range
Sample Pressure Vented to atmosphere during operation and calibration
Atmospheric Pressure Effect ±0.13% of reading per mmHg (directly proportional to absolute pressure). During calibration, pressure and flow must be kept constant.
Process Connection
  • 316 stainless steel and Delrin process units: 1/8 in NPT inlet and outlet
  • Ambient air monitoring unit: None


loop

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Descriptions English Français Deutsch Português
Gas Analysis Solutions product guide acrobat-reader acrobat-reader
O2X1 acrobat-reader acrobat-reader
O2X1 Hazardous Area System Drawing acrobat-reader
O2X1 Interconnection Diagram with 24-VDC Power Supply & 4-20 mA Input Device & MTL706 Zener Barrier acrobat-reader
O2X1 Outline & Installation Drawing for standard 316SS package acrobat-reader
O2X1 Oxygen Transmitter Operating Manual acrobat-reader
O2X1 Transmissor de oxigênio da Panametrics acrobat-reader
PSDA Low-Cost Power Supply/Display (978KB PDF) acrobat-reader
X1 Interconnection Diagram with 24-VDC Power Supply & 4-20 mA Input Device acrobat-reader


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