Pulsar dBi 10, Instruction Manual, Page: 21 / 55

PULSAR MEASUREMENT
21
7. The certificate number has an ‘X’ suffix that indicates t hat the following
special condition of certification applies;
In the case of dBi transducer range, due to the housing and labels being
non-conductive plastic care needs to be taken with regards electrostatic
charge. The equipment shall not be installed if the conditions are
conducive to the build-up of electrostatic charge. Additionally, the
equipment should only be cleaned with a damp cloth.
With the dBi Ex mb version a 100mA, 1500A breaking capacity fuse must
be fitted in the positive lead of the cable. The product is shipped with
this fuse in the cable, visible through the heat shrink at the wire end of
the cable
8. The manufacturer should note that, on being put into service, the
equipment must be accompanied by a translation of the instructions in
the language or languages of the country in which the equipment is to
be used and by the instructions in the original language.
Hazardous Area Specific Power Supply and barrier Requirements
The dBi transducer operates from a DC supply of 10 – 28V and will typically
draw less than 22mA.
In the case of the Ex ia version the unit must be powered from an
approved I.S. safety barrier or approved I.S. Power supply with the
following limits:
Uo <= 28V, Io <=162mA, Po <= 1.03W
In the case of the Ex mb version the unit must be powered from a
power supply and 100mA fuse (1500A breaking capacity) to give
prospective short current of 1500A. This fuse (100mA leaded Little fuse
series 242) is fitted in the cable of the Ex mb version of dBi
transducers. The power supply should have the following rating:
Um = 28V