Tausonde für Wechselarmaturen
This Hellma transflexion probehas been designed specifically for straightforward installation in quick-change fittings. Change your probe or sensor without interrupting the process.
This new product development is an immersion probe with interchangeable light path tips. The tips can be exchanged quickly and easily to adjust the light path between 1 mm and 20 mm. After passing through the solution to be measured, the light beam is reflected by a rear-coated mirror and passes through the solution a second time.
Product info 661.668
| Typ | 661.668 |
| Mirror material | Quartz glass SUPRASIL® 300 with Aluminium reflective layer |
| Window material | Quartz glass SUPRASIL® |
| Probe barrel material | Stainless steel 1.4435 (316 L) |
| Probehead seal | Perfluroelastomer FFPM (DIN/ISO 1629) |
| Outer-Ø | 12 mm |
| Total length (without fibres) | 260 mm |
| Max. immersion depth | 215 mm |
| Removable tips | Type number 665.764 (light path equals 2 x distance from mirror to window) 1mm, 2 mm, 5 mm, 10 mm, 20 mm |
| Typ. transmission | NIR: > 50 % in air at 1500 nm |
| Max. pressure | 15 bar |
| Max. temperature | 180 °C |
| Optical fibres* | Built in, not exchangeable NIR Length: 1,8 m 400 nm – 2.300 nm (25.000 cm-1– 4.348 cm-1) UV/Vis and UV/Vis–low solarisation upon request |
| Optical fibre connections | FSMA type 905 |
* other fibre lengths optional
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