Oxygen measurements

Description

OTT-520 PPM O2 transmitter in-line mounting equipped with 316 SS sensor housing and fittings for easy and simple installation and operation, without any external sample system.

Its designed is intrinsically safe when used in conjunction with MTL-7706 safety barrier. User selectable any range from 5 PPM to 25%. Signal output is locked on the selected range. Recovery from air to 10 PPM in under 45 minutes.

• Field selectable range.
• Fine tune temperature compensation for accurate measurements even in environment with changing ambient conditions.
• User selectable digital filter for optimum signal to noise with acceptable system response time.
• Standard PPM O2 sensor, OTT-333 ideal for oxygen measurement in inert and gaseous hydrocarbon gas streams.
• OTT-520 PPM O2 transmitter can be used in extended low operating temperature range down to -10°C (14°F) with Z series.
• OTT-333Z  sensor shows excellent compatibility with gas streams containing any level of CO2 gas. No routine sensor maintenance is needed.

Technical Data

• Measurement Range: User selectable from 0-5 PPM - 21%
• Display: Bright 2-Line LED
• Output Lock: 4-20 mA locked on user selectable range.
• Accuracy: < 2% of FS at constant operating conditions
• Linearity: +/-1% after calibration
• Temperature Compensation: Fine tune on low PPM range for enhanced stability
• Barometric Pressure Compensation: Optional
• Calibration Method: Certified Span Gas or air, Recommended Calibration interval 30 days
• Gas Connections: 1/8" compression tube fittings or 1/8” female NPT
• Menu Controls: Membrane Switch, Menu driven selection of Analysis Range, Display Resolution, Signal Filter Strength, Fine Tune Temp Compensation, System Functions
• Response Time: 90% of Step Change in <30 sec
• Repeatability: +/-1% over all ranges
• Recommended Sample Flow Rate: 1-2 SCFH, vent to atmosphere
• Sample System Included: SS 316 Sensor Housing with Compressin Tube Fittings Gas Connectors
• Sensor Model: AST-333 inert gases, AST-333Z for gases containing more than 0.5% CO2
• Expected Sensor Life: 24 months @ 25ºC and 1 atm
• Operating Temp: Range: 5ºC to 45ºC
• Enclosure: IP67 Painted Aluminum 7.3” x 5.3” x 3.4”
• Warranty: 12 months trnasmitter; 12 months sensor

Advanced Sensor Technology

• Proprietary Electrolyte Formulation and Anode Meterial
• Electro-etched Smooth Cathode
• Recovery From Air to 10 PPM in under 40 Minutes
• Extended Operating Temperature Range -10°C (-4°F)
• Z-Series sensor Compatibility with 0-100% CO2
• Fast Sensor Response, no Routine Sensor Maintenance Needed
  

Key Transmitter Features

• User Selectable Range From 0-5 PPM to 25%
• Output Locking on Selected Range
• 4-20 mA or 1-5 VDC
• Fine Tuned Temperature Compensation
• Barometric Pressure Compensation
• Intrinsically Safe Design, complies with Class I Div I Group IIC

Optional Accessories/Equipment