Model TC-55-TCD Detector

  • The thermal conductivity detector (TCD) is a universal detector with a ppm to % level range. The detector is described below:
  • The Model 55 has a thermal conductivity (TCD) cell with a sealed reference, a low voltage power supply, and a Wheatstone bridge with an electrometer. The electrometer output is 0-10 VDC. The customer needs a separate ADC channel to feed the electrometer signal into the GCs data system. Alternately, PID Analyzers sells a data system (Model --) that will feed the signal into a separate PC.
  • he TCD is sensitive (ppm) and a universal detector for most compounds. It has a wide dynamic range (>105).
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Specifications

Species measured: Detection limit: Linear Range: Detector:
Universal response for most compounds                         <10 ppm of H2 or He
<20 ppb of P
> 105 2.5'' D x 5'' L
Electronics enclosure (FC55): Power consumption: Instrument operating conditions:
Weight: 3.5 lbs.
Size: 6'' W x 7'' L x 3.5'' H
< 2 watt maximum 5-40 degrees C, 0-95% RH (non-condensing)

Features

Easy to install Selectivity Wide linear dynamic range High sensitivity
  Improves response for a variety of compounds > 105) < 10 ppm of H2 or He detection limits ---
Adaptability Used by environmental agencies worldwide Display ADC
Is readily adaptable to any chromatograph.   Our 2 line by 16 character display can be backlit; used for range and background readings. Our 16 bit ADC provides a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range.
Programmable Voltage output
0-10VDC

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