text: FAQ - Qualus
  FAQQualUs Administrator.2018-09-26T22:49:15+00:00
  QualUs customers frequently submit queries in relation to issues that they have encountered. These are published here. If you have any queries then please use the contact us form on this website or send your query to admin@qualus.ie and we will get back to you with a potential solution.
  What are the 3 main tests associated with Steam Quality Testing?
  Dryness, Superheat and Non Condensable Gases (NCG)
  On occasion one of the channels on my Kaye Validator 2000 data logger reads "UNDER" or "OVER", what's the cause of this?
  Typically a channel will read "UNDER" or "OVER" when water has entered the SIM of the Kaye Validator 2000 data logger and the cold junction has become wet. Check each thermocouple wire to ensure that you have added drip-cuts to each wire 1m from the SIM to allow the condensate to drain away from the sheathing. Sometimes a broken thermocouple is replaced with a new thermocouple but a drip-cut has not been added to the new wire and water finds it's way into the SIM.
  The SIM should be opened and allowed to dry out. Paper towels should be used to get rid of any excess water. A high pressure air source can be used to blow away excess water also. The channel should return to a room temperature value once it is fully dried out. Ensure that you have rectified the source of the water before proceeding with further studies. You may notice that the wire terminations have oxidized (looks like white powder) due to the presence of moisture. A small piece of emery paper connected to a narrow wire or flat head screwdriver can be used to restore the terminals.
  Typically a channel will read "OPEN" when either the positive or negative wire of the thermocouple has been damaged or has cracked. The most common place to find this is at the tip of the thermocouple whereby the twisted pair junction needs to be re-made. Ideally the junction should also be welded using a thermocouple welder as this prevents the wires from becoming separated and hence prolongs the overall lifetime of the thermocouple loom. Welded thermocouples are less likely to result in repeat temperature mapping studies due to open circuits. QualUs have a range of thermocouple welders to suit all requirements, contact QualUs today for further details.