Safety Thermometers with Contact TNS, TNF
Measuring range: -20 .... +40 .... 0 .... +600°C
Connection: back or bottom, G ½ ... G1, ½ ... 1" NPT, Tri-Clamp®, helix probe
aluminum, stainless steel, plastic, steel
Housing: Ø 63, 80, 100, 160 or 250 mm
Accuracy class: 1.0 or 1.6
Option: contacts, gliding pointer, oil filling.
The measuring system of the gas pressure thermometer comprises probe, capillary tube and Bourdon tube in a casing. These parts form a unit. The complete measuring system is filled with pressurized nitrogen. A change in temperature causes a change in inner pressure in the immersion shaft. The resulting deflection of the Bourdon tube is transferred to the pointer through a pointer element.
A glycerine filled indicator version is available as an option for service at measuring points exposed to strong vibrations. The fill dampens the measuring system when exposed to mechanical vibrations and thus enables steady indication; it also provides good lubrication for moving parts. We recommend our robust aluminium casing for rough field service conditions. These thermometers can also be used with aggressive measuring substances when fitted with a suitable thermowell.
Bi-metal Thermometer TBE
Measuring range: -50 ... +50 ... 0 ... +600°C
Connection: back or bottom, G ½, G ¾, ½" NPT,
¾" NPT male thread, stainless steel
Housing material: stainless steel
Housing: Ø 100, 125, 150 mm
Accuracy class: 1.0
These instruments are designed for use in food, beverage, pharmaceutical, chemical, petrochemical processing industries. They are built to resist the most severe operating conditions created by the ambient environment and the process medium. An Argon arc welded case/bulb strengthens the whole construction. A leak tight fit is ensured if the instrument is filled with a dampening fluid to prevent damage due to vibration.
The bi-metal thermometers are built from a stainless steel tube inside of which a bi-metal helicoidal spiral is placed. This spiral is welded to the tip of the tube and on the other side to a transmission shaft directly connected to the pointer. The temperature vibrations generate a deformation of the bi-metal which is transmitted to the pointer through a shaft rotation.