BB3500MP is an ultra-large cavity blackbody, which is the further
development of the famous family of pyrographite blackbodies
BB3500/BB3200pg, which are used by a number of National Metrological
Laboratories such as NIST (USA), PTB (Germany), NPL (Great Britain),
CNAM (France), VNIIOFI (Russia), NPL (India), NIM (China), UME
(Turkey) and other for realization and dissemination of radiometric
and radiance temperature scales.
Having a cavity with inner diameter of 57 mm, BB3500MP is ideally
suitable for use as a furnace for large-aperture high-temperature
fixed-point cells based on metal-carbon eutectics (Re-C, TiC-C,
and ZrC-C). BB3500MP can contain as large fixed-point cells
as 20 mm aperture. Even for small fixed-point cells (as small
as 3 mm aperture) BB3500MP is a perfect furnace, because its
large cavity allows to get better temperature uniformity of
the small cell than with any other furnace.
BB3500MP has no welds neither water connections inside
the chamber! Therefore, water can not go to hot parts
of the radiator.
Delivery Set
BASIC:
- BB3500MP itself;
- One spare pyrographite radiator;
- mount accessories for BB;
- Vacuum pump with accessories;
- Power Supply PS-1000pu (output: 1000 A, 25 V);
- Software for BB operation;
- User Manual and Protocols of Tests
OPTIONAL:
- Setup for optical feedback system with DMM, current-voltage
converter-amplifier and water thermostat;
- Holders for fixed-point cells/crucibles containing metal-carbon
eutectics;
- PC computer.
Figure below presents BB3500MP (to the right) standing
side-by-side with BB3500 (left) in experiment on lumen realization
at VNIIOFI, Russia.
|
