Field tests indicate that there is nearly no loss of temperature due to the low flow of the flush gases. The normal flush flow (approx. 10 lph) is simply too low to create a measureable cooling effect. To verify this, close the flowmeter needle control valve on the Model HFS Flush Gas Station coupled to the thermocouple in service and observe the increase in the temperature indication. Wait a few minutes and return to the proper flow rate and again observe the temperature reading. If flow rates higher than that controlled by the Model HFS are used, the cooling effect would become quite noticeable.