Type 621 - 681 Bimetal dial thermometer industrial version -40...600°C Nominal sizes 63,80,100,125,160 mm
Suitable for outdoor use - closed system (IP65) / Completely stainless steel - high quality finish / Without electrical auxiliary power / Independent of ambient temperature influences
SIKA precision bimetallic dial thermometers are the proven solution for local temperature measurement of liquids and gases in the industrial sector. They are perfectly suited for installation in pipelines, vessels, machines and plants and do not require any external energy. Thanks to their high protection class (IP65) and their insensitivity to ambient temperature fluctuations, which is based on the measuring principle, we also recommend these versions for outdoor use.
The dial thermometers of types 621 to 681 are local thermometers with flared ring housing. Housing, immersion tube and connection are made of stainless steel. All devices comply with EN 13190 and meet class 1.
The devices are available in various nominal sizes from 63 to 160 mm. Thanks to the flanged housings, the thermometers are permanently tight (IP65) and are ideally suited for filling housings with silicone oil (optional).
We offer many different indicating ranges with measuring spans from 60 to 600 K. On the connection side, our standard range includes three different designs, six different connection types, various connection threads and numerous immersion tube lengths and diameters. By combining these variants, optimal solutions can be achieved for almost any application.
| Execution |
| Rigid connection with neck tube |
| Universally adjustable |
| Dip tube outlet |
| Center back |
| Below |
| Universally adjustable |
| Nominal size |
| 63 mm |
| 80 mm |
| 100 mm |
| 160 mm |
| 125 mm |
| Filling |
| unfilled |
| with case filling |
| Display range |
| -20..60 °C |
| 0..60 °C |
| 0..100 °C |
| 0..120 °C |
| 0..200 °C |
| 0..250 °C |
| 0..300 °C |
| 0..400 °C |
| 0..600 °C |
| -20..40 °C |
| 0..80 °C |
| 0..160 °C |
| 0..500 °C |
| -40..40 °C |
| -40..60 °C |
| -30..50 °C |
| Immersion tube length |
| 63 mm |
| 108 mm |
| 89 mm |
| 215 mm |
| 100 mm |
| 160 mm |
| 190 mm |
| 275 mm |
| 355 mm |
| 145 mm |
| 250 mm |
| 80/ 86/ 77 mm |
| 400 mm |
| 295 mm |
| 230/ 236/ 227 mm |
| 205 mm |
| 155 mm |
| 415 mm |
| Immersion tube diameter |
| Ø 8 mm |
| Ø 6 mm |
| Connection type |
| fixed external thread |
| Smooth immersion tube |
| Union nut |
| Adjustable compression fitting |
| movable external thread |
| Process connection |
| G 1/2 |
| Without |
| M24 x 1.5 |
| 1/2 NPT |
| M27 x 2 |
| G 3/4 |
| M20 x 1.5 |
Technical data

