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Uniphos ASP-40 Instruction Manual

Air sampling pump
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UNI
PHOS PRECISION
AIR
SAMPLING PUMP
MODEL : ASP - 40
IN
STRUCTION MANUAL

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Summary of Contents for Uniphos ASP-40

  • Page 1 PHOS PRECISION SAMPLING PUMP MODEL : ASP - 40 STRUCTION MANUAL...
  • Page 2 INSTRUCTION MANUAL FOR UNIPHOS PRECISION AIR SAMPLING PUMP MODEL: ASP-40 The UNIPHOS precision gas detector consists of two parts viz. i) the gas detector tubes and ii) air sampling pump (ASP-40). Together they form the UNIPHOS gas detection system. The air sampling pump is used to draw a precisely defined volume of sample air through the detector tube for determining the impurity gas concentration in the air sample.
  • Page 3 Vac. Test (Flow indicator): The Vac. Test is meant for testing the vacuum holding capacity of the air-sampling pump as well as to see the completion of sampling. Stopper: The air-sampling pump can lock the shaft after pulling and reaching 50 cc (1/2 stroke) or 100 cc (full stroke) mark.
  • Page 4 OPERATION The detector tube system is based on the following working principle. A precisely defined volume of sample air is drawn through the detector tube. The detector tube contains the sensing chemical, which reacts with the impurity gas in the sample air and produces a coloured stain in the sensing chemical.
  • Page 5 2.4 Align the red dots on the stopper and shaft and pull the pump handle to the 50 cc or 100 cc mark. 2.5 Keep the end of the tube in the sample gas source while the gas is being drawn through the tube for the allotted sampling time (approximately 1- 3 minutes) as indicated on the tube sheet.
  • Page 6 2.6 To draw more than 100 cc, (one stroke) free the handle by rotating it 90 degrees and push back the piston shaft to its original position without removing the detector tube. Pull the pump handle again, for the second stroke. These steps can be repeated to get the desired number of strokes.
  • Page 7 Pull the pump handle a little and unscrew the end flange fully. ii. Pull out completely the piston in the barrel along with the stopper. iii. Mop up the piston and the inside surface of the barrel. Smear a thin layer of fresh grease on the rubber packing of the piston.
  • Page 8 CONNECTOR HOLDER RUBBER TUBE CONNECTOR Fig. -10 Rubber tube connector assembly 4.3 Correcting leaking pump: In case of a leaking pump the following should be checked and if necessary replaced or corrected Symptom Corrective action Tighten connector holder Rubber tube connector is loose Rubber tube connector is Replace the tube connector...

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