281.491.2331 13839 West Bellfort Street Sugar Land, Texas
281.491.2331 13839 West Bellfort Street Sugar Land, Texas
ISO 9001:2015
U.S. Patents
90 + U.S. Patents
Since 1954
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The Welker Automatic Insertion Temperature Probe is designed for use in operations where it is necessary to determine pipeline temperature for measurement or analysis. The design of the unit allows the operator to control the movement of the probe into and out of a pressurized pipeline safely by utilizing pipeline pressure and manipulating four valves. The unit should be installed in a straight Section of piping before the flowing stream is subjected to turns and impingements that can result in turbulent flow. A terminal at the top of the device is connected to the RTD sensor at the bottom of the probe. The RTD sensor transmits the data to the terminal strip that is mounted in an explosion-proof junction box.


AITP Automatic Insertion Temperature Probe
Materials of Construction316/316L Stainless Steel, PTFE, Viton®
Others Available
Insertion Length18"
Others Available in 6" Increments
Viscosity Range0.009 cp – 2,000 cp @ 68° F
Pipeline Connection1" MNPT (Standard)
Other NTP & Flanged Available
Operating PressureANSI 900 Flange
2160 psig MAOP @ -20 °F to 100 °F
ANSI 600 Flange
1440 psig MAOP @ -20 °F to 100 °F