KROHNE BM 100A Handbook - Manual (Page 16)

16 Handbook BM 100 A
Traction on cable according to product (approximate value in metric tons)
Probe Length / m (ft)
Material Probe used 10 (32.8) 20 (65.6) 30 (98.4)
Cement Single cable Ш8 / Ш0.3’’ 1.0 T / 2200 lb 2.0 T / 4410 lb 3.0 T / 6620 lb
Flyash Single cable Ш8 / Ш0.3’’ 0.5 T / 1100 lb 1.0 T / 2200 lb 1.5 T / 3300 lb
Wheat Single cable Ш8 / Ш0.3’’ 0.3 T / 660 lb 0.6 T / 1320 lb 1.2 T / 2650 lb
PE granules Twin cable Ш6 / Ш0.2’’ 0.2 T / 440lb 0.6 T / 1320 lb 1.0 T / 2200lb
Electro static discharge (E.S.D.)
BM100 Standard and Ex gauge electronics are normally shielded up to 16KV against E.S.D.*.
*For non-Ex powder applications, BM100A probes are protected up to 32 kV.
Note:
E.S.D. cannot be solved by BM100A E.S.D. protection. It is the customer’s responsibility
to avoid E.S.D. by grounding the tank, product and probe installation.
1
Danger of injury
The probe may become electro
statically-charged during
operation; earth the probe by
pushing it against tank wall with a
suitably isolated tool just before
touching it to avoid receiving a
shock.
2 Earth the entry pipe and product.
Product deposits on the nozzle and probe
Product build-up can occur under the nozzle: this may weaken the pulse. Avoid cavities that permit
the build-up of deposits.
Tank roof deformation
Tank roofs should support loads of at least 3.5 tonnes / 7700lb for gauge installations using type K
single cable probes and 3.6 tonnes / 7900 lb for gauge installations using type B twin cable probes
without deformation.