ULM–70
©
Dinel, s.r.o.
19
It is forbidden to perform any modifications or interventions into the ULM–70 level meter
without manufacturer's approval. Potential repairs must be carried out by the manufacturer
or by a manufacturer authorized service organization only.
Installation, commissioning, operation and maintenance of the ULM–70 level meter has to
be carried out in accordance with this instruction manual; the provisions of regulations in
force regarding the installation of electrical equipment have to be adhered to.
13 .
s
afeTy
,
proTecTion
,
coMpaTibiliTy
anD
explosion
proof
The level meter ULM–70 is equipped with protection against reverse polarity and output current
overload.
Protection against dangerous contact is secured by low safety voltage that complies with
EN 33 2000-4-41.
Electromagnetic compatibility according to EN 55022/B, EN 61326/Z1 and EN 61000-4-2 to 6.
Explosion proof of ULM–70Xi type complies with the following standards: EN 60079-0 : 2007;
EN 60079-11 : 2007 ; EN 60079-26 : 2007 and examined by FTZÚ-AO 210 Ostrava - Radvanice
certificate No.: FTZÚ 09 ATEX 0277X.
Special conditions for safe use ULM–70Xi:
The device is designed for connection to the isolating repeater IRU-420. When the other approved
supply unit is used, whose output parameters satisfy above mentioned output parameters, it is neces-
sary to have a galvanic separation or, if supply unit without galvanic separation is used (Zener barri-
ers), it is necessary provide potential equalization between sensor and point of barrier earthing.
For application in zone 0 the present explosive atmospheres - mixture of air with flammable gases,
vapour or mists must comply: - 20°C < Ta < + 60°C; 0,8 bar < p < 1,1 bar
The device must be installed in such a way, to prevent mechanical damage of sensor face.
14 .
u
se
,
ManipulaTion
anD
MainTenance
The level meter does not require any personnel for its operation. Follow-up displaying device is
used to inform the technological entity operating personnel on the measured substance level height
during the operation.
Maintenance of this equipment consists in verification of integrity of the level meter and of the sup-
ply cable. Depending on the character of the substance measured, we recommend to verify at least
once per year the clarity of the ultrasound transducer emitting field and to clean it, respectively. In
case any visible defects are discovered, the manufacturer or reseller of this equipment must be
contacted immediately.
