Hellma Fibre Optic Probe-Ultra-Mini Immersion Probe


Ultra-Mini Immersion Probes

The type 661.602 probe is an ultra-mini immersion probe with SUPRASIL 300 quartz prism and corrosion-resistant titanium barrel. The collimated light beam passes the solution to be measured twice. The separate beam path and use of a deflecting prism with two totally reflective surfaces leads to very low values for stray light.

The type 661.622 probe is an ultra-mini immersion probe with removable light path tips. The tips can be exchanged simply 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 661.602
Catalogue Number
661.602-UV
661.602-NIR
Prism material
Quartz SUPRASIL® 300
Window material
Quartz SUPRASIL® 300
Barrel material
Titanium
Probe head seal
Epoxy glue
Outside Ø
6.35 mm (1/4")
Total length
235 mm
Max. immersion depth
175 mm
Light path
2 mm, 5 mm, 10 mm
Max. pressure
6 bar
Max. temperature
150 °C
Fibre-optic cables
Buil-in, not exchangeable
UV/Vis–2 m*
240 nm –1100 nm
(41.667 cm- – 9.100 cm-1)

NIR–2 m*
400 nm –2.300 nm
(25.000 cm-1–4.348 cm-1)

UV/Vis–low solarisation on request
Product info 661.622
Catalogue Number
661.622-UV (without tips)
661.622-NIR (without tips)
Mirror material
Quartz SUPRASIL® 300 with aluminium mirror layer
Window material
Quartz SUPRASIL® 300
Barrel material
Stainless steel 1.4435 (316 L)
Probe head seal
Epoxy glue
Outside Ø
6 mm
Total length
235 mm
Max. immersion depth
175 mm
Removeable tips
Catalogue Number 665.622
1 mm, 2 mm, 5 mm, 10 mm, 20 mm
Max. pressure
6 bar
Max. temperature
150 °C
Fibre-optic cables
Built-in, not exchangeable UV/Vis–2 m*
240 nm –1100 nm
(41.667 cm-1– 9.100 cm-1)

NIR–2 m*
400 nm– 2.300 nm
(25.000 cm-1– 4.348 cm-1)

UV/Vis–low solarisation on request