Fig. 40 Heating thermometers

with straight measuring stem

Suitable for all-purpose applications in the heating and boiler systems sector for reading ranges from -30°C to +200°C
The measuring insert consisting of a glass capillary tube is protected by a cylindric brass surround to ensure break resistance
Every temperature change changes the volume of the wetting expansion fluid - inorganic (red), mercury (yellow) - and thus the position of the indicating filament in the capillary
Non-toxic thermometric fluid for scale ranges from -30°C to +200°C.
Large scale lettering and graduation lines with good readability in durable ink, protected in the vitreous body of the capillary tube
Straight measuring stem
Thermowell included in standard scope of delivery

Measuring principle: Expansion of thermometric, wetting fluids in a capillary
Sensing element: up to 200°C; glass capillary with inorganic fluid, dyed in red
Nominal size Connection position Type standard scale division
NS 160 straight, downwards EN 16170 2°C
NS 260 straight, downwards EN 16178 1°C
Reading ranges: -10/+50°C; -30/+50°C; 0/100°C; 0/200°C; 0/130°C; 0/150°C
Measurement accuracy: +/- 1.5% of end scale value
Housing: Brass surround with screw cap, polished
Device protection type: IP68 acc. to EN 60529 / IEC 529
Limits of use:
- max. operating pressure: 6 bar