
The IPP 70-Se is the intrinsically safe version of the standard model IPP 70-S for use in processes with ATEX requirements.
When used in conjunction with a measuring PC, it allows for the determination of particle size distribution (e.g., Q0, Q3) as well as the attributes of the distribution (x10, x50, x90, etc.) even directly within processes in ATEX zones 0/20 (gas/dust).
It consists of a robust stainless-steel construction with sapphire windows to protect the optics from wear.
Its dimensions, measuring ranges and accessories make it compatible with all other probe models, so all the accessories for process adaptation can also be used with the IPP 70-Se in ATEX areas.
Compressed-air-driven accessories, such as dispersers, ensure that the measuring volume and measurement optics are kept permanently free from contamination while also guaranteeing optimal adaptation to process and particle attributes. The probe is therefore also suitable for use in processes with damp and sticky particles. Using a disperser means that measurements can also be taken in processes with irregular particle movement, such as in fluidized beds, or processes with high particle loads, such as high-shear processes.
A complete measuring system consists of the IPP 70-Se with accessories for process adaptation, the barrier box for Ex-zone separation and a measuring PC with measuring program for particle searching and the calculation of all distributions. The measured results can then be made available to a higher-level control system via optional interfaces.
Technical details
Parameter
Particle size measurement range
50…6000 μm
Particle velocity measurement range
0.01…50 m/s
Measuring rate
Up to several thousand particles per second
Products
Powder, pellets, granulates, sprays…
Process temperature/pressure
-20°C to +100°C / <4bar
Material, in contact with product
Stainless steel (316L), sapphire, epoxy resin
Probe tube dimensions (length x diameter)
280 x 25 mm
Electronics – housing dimensions (w/h/d)
120 x 90 x 60 mm
Electronics – housing temperature
– 10°C to 60°C
Housing protection class
IP65
Light source
Laser (laser class 1)
Interfaces
OPC-Server, TCP/IP-Server, 4…20 mA
ATEX certificate
IBExU02ATEX1009
Marking of the probe IPP70-Se
II 1/2G Ex ia op is IIB T4 Ga/Gb
II 1/2D Ex ia op is IIIC T125°C Da/Db
Marking of the barrier box IPP70-Se-B
II (1)G [Ex ia Ga] IIB
II (1)D [Ex ia Da] IIIC
Accessories (process interface)
Parameter
D24 inline disperser
For high load/high fine content – particles up to 2000 μm, clearance 3.8 mm
D12 inline disperser
As for D24, but also for particles >2000 μm, clearance 7.5 mm
SZ11, SZ20 – cleaning cells
To keep the probe optics free of contamination without active dilution of the particle flow
(assuming a low particle load)
Compressed air unit
Compressed air supply for the probe when using dispersers or cleaning cells
VS28 anti-wear guard
Tube sleeve with a reinforced hard-chrome coating with a hardness of 68 – 72 Rockwell
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