Appendix A: Safety Instructions – Ver. 1.00
29
Appendix A
Ex-Safety Instructions
A.1
Safety instructions for the installation in a hazardous area:
The measurement system shall be installed & maintained according to the applicable
standards regarding electrical installations in a hazardous areas.
Before installation, read carefully the operating manual of the RHEONIK Coriolis
Flowmeter.
The mounting, electrical installation, commissioning and maintenance are to be carried
out by qualified personal only who are trained in explosion protection.
All national regulations concerning the installation, maintenance and repair of
instruments in explosion hazardous areas must be observed.
As counterparts to the rear side connector of the RHE26 / RHE27 only parts delivered or
specified by Rheonik must be used.
The sensor cable connection between sensor RHM and the transmitter RHE or the barrier
EZB is intrinsically safe. Only the cable delivered by Rheonik may be used. The use of any
other cable shall be clarified with Rheonik beforehand.
For safety reasons the total cable length between a RHM sensor and transmitter RHE or
a barrier EZB must not exceed 100 meters.
The connection cable ARHE-C4 is specified for -50°C to +105°C. Temperatures above must
be avoided. Temporary temperatures below -50°C are allowed, if the cable is fed in a
protecting tube.
In accordance with details indicated on the ex-plate, the equipment may be used under
conditions where ignitable atmospheres composed of a mixture of air and other gases,
steam or dust are present. The equipment is not suitable for mines.
The intrinsically safe sensors RHM are available for zone 0, 1 or 2 and for div. 1 and div.
2. Refer to the letter plate of the RHM for the individual classification.
Regarding the installation of the sensor RHM refer to the corresponding manual.
Special conditions for CSA certified units:
Warning: Substitution of components may impair intrinsic safety
Avertissement: La substitution de composants peut compromettre la sécurité
intrinsèque.
Read the manual before connecting or operating the unit!
