High Sensitivity Laser Spectrometer TDLS5500

TDLS5500 is trace gas analyzer by OFCEAS (Optical Feedback Cavity Enhanced Absorption Spectroscopy) Technology and LPS (Low Pressure Sampling). It is also a computerized device that measures the amount of gas contained in the process in real time.

The optical resonator structure makes the effective path length long (up to 30 km) and realizes ultra-high sensitivity.

The interactions within the gas are reduced by low pressure sampling. This eliminates the effects of cross-sensitivity and false positives.

Feature and Benefit of TDLS5500 gas analyzer

  • High Speed continuous analysis by Laser based measurement
  • No zero drift, no sensor aging by non-contact measurement
  • Low maintenance : no consumables, no scrubber, no optical moving parts and pre-calibrated

Applications

Details

Trace C2H2 Measurement in Ethylene

Customer’s benefit

The analyzer can measure trace C2H2 at high speed in Ethylene Process
Improvement of process efficiency by process optimization using high speed and reliable TDLS5500 signal.
Avoiding out-of-specification (Ethylene) product by detecting at high speed unusually high concentration of C2H2 as impurity.

 

Long optical pass length by OFCEAS
→ High Sensitivity

Laser beam Repeats huge number of reflections in optical cavity to get km level optical path length.

Very long optical pass length by OFCEAS

Super high resolution by low-pressure sampling
→ No interference by background gas

Example to show effect of low pressure gas measurement.

Very narrow spectrum by low pressure gas

TDLS5500 offers reliable and high-speed trace C2H2 measurement in Ethylene Production Process

Typical Installation of TDLS5500 C2H2 analyzer in Ethylene Production Process

Example Installation of TDLS5500 C2H2 analyzer in Ethylene Production Process

Measurement point 1:
Trace C2H2 measurement at outlet of Acetylene Converter for reactor process optimization

Measurement point 2:
Trace C2H2 measurement at head outlet of C2 splitter for prevention of out-of-specification final Ethylene products

 

General Specification Summary

Measurement Performance

Measured component Min. range Max. range Repeatability Response time*
C2H2 in Ethylene 0 ~ 5 ppm 0 ~ 100 ppm ± 50 ppb or ± 2% of reading, whichever is greater < 20 sec.

If the measuring range or stream composition of your sample is outside the above-mentioned ranges, please consult Yokogawa.
For application feasibility check please share the process conditions by filling in the Application Data Sheet which can be found in TDLS5500 General Specifications.

* Response time is based on T10 - T90, depend on the stream composition, and the plant configuration, particularly the length of the transfer line.

Hazardous area classifications

ATEX Type of protection:II 2G Ex pxb IIC T3 Gb
Enclosure rating:IP54 (In accordance with EN 60529)

Trace H2S Analyzer and Trace H2O Analyzer in Natural Gas

Customer’s benefit

Reliable trace H2S and H2O measurement without unexpected down time due to sudden high concentrations of H2S or H2O in the process stream.

 

Long optical pass length by OFCEAS
→ High Sensitivity

Laser beam Repeats huge number of reflections in optical cavity to get km level optical path length.

Very long optical pass length by OFCEAS

Super high resolution by low-pressure sampling
→ No interference by background gas

Example to show effect of low pressure gas measurement.

Very narrow spectrum by low pressure gas

TDLS5500 offers reliable and high-speed trace H2S or H2O measurement in Natural Gas

Typical Installation of H2S analyzer and H2O analyzer in Natural Gas Processing

Typical Installation of H2S analyzer and H2O analyzer in Natural Gas Processing

 

General Specification Summary

Measurement Performance

Measured component Min. range Max. range Repeatability Response time*
H2S in Natural Gas 0 ~ 5 ppm 0 ~ 1000 ppm ± 100 ppb or ± 2% of reading, whichever is greater < 10 sec.
H2O in Natural Gas 0 ~ 5 ppm 0 ~ 500 ppm < 30 sec.

If the measuring range or stream composition of your sample is outside of the above-mentioned ranges, please consult Yokogawa.
For application feasibility check please share the process conditions by filling in the Application Data Sheet which can be found in TDLS5500 General Specifications.

* Response time is based on T10 - T90, depend on the stream composition, and the plant configuration, particularly the length of the transfer line.

Hazardous area classifications

ATEX Type of protection:II 2G Ex pxb IIC T3 Gb
Enclosure rating:IP54 (In accordance with EN 60529)

Trace H2O Measurement for Hydrocarbon Process

Customer’s benefit

Reliable trace H2O measurement without unexpected down time due to sudden high concentrations of H2O in the process stream.

 

Long optical pass length by OFCEAS
→ High Sensitivity

Laser beam Repeats huge number of reflections in optical cavity to get km level optical path length.

Very long optical pass length by OFCEAS

Super high resolution by low-pressure sampling
→ No interference by background gas

Example to show effect of low pressure gas measurement.

Very narrow spectrum by low pressure gas

TDLS5500 offers reliable and high-speed trace H2O measurement in Hydrocarbon Process

Example of trace H2O analyzer in Hydrocarbon Process

  • Catalytic Reformer Units in outlet Reformer for check the reforming
  • Alkylation – Sulfuric and HF in C4 Recycle Stream for Corrosion Protection
  • Hydro-treater in H2 recycle for Corrosion Protection

 

General Specification Summary

Measurement Performance

Measured component Min. range Max. range Repeatability Response time*
H2O in Hydrocarbon 0 ~ 5 ppm 0 ~ 500 ppm ± 100 ppb or ± 2% of reading, whichever is greater < 30 sec.

If the measuring range or stream composition of your sample gas is outside of the above-mentioned ranges, please consult Yokogawa.
For application feasibility check please share the process conditions by filling in the Application Data Sheet which can be found in TDLS5500 General Specifications.

* Response time is based on T10 - T90, depend on the stream composition, and the plant configuration, particularly the length of the transfer line.

Hazardous area classifications

ATEX Type of protection:II 2G Ex pxb IIC T3 Gb
Enclosure rating:IP54 (In accordance with EN 60529)

Resources

Downloads

General Specifications

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