AFRISO SonarFox UST 20, Руководство по эксплуатации

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27 AFRISO SonarFox UST 20
13 . Safety, Protections, Compatibility and Explosion
safety
The Product is equipped with protection against electric shock on the electrode, reverse polarity,
output current overload, short circuit and against current overload on output.
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 UST 20 ... EX is provided by conformity with standards: EN 60079-0:2013;
EN 60079-11:2012 and EN 60079-26:2007.and examined by FTZÚ-AO 210 Ostrava - Radvanice
certificate No.: FTZU 21 ATEX 0027X
Special conditions for safe use of variants
UST 20..EX)
UST 20 ... EX are designed for connection to intrinsically safe circuits with galvanic isolation. If
you use the device without galvanic isolation (Zener barriers) it is necessary to offset a potential
between the sensor and the grounding point of the barriers.
For application in zone 0 the present explosive atmospheres - mixture of air with flammable ga -
ses, vapour or mists must comply: 0,8 bar < p < 1,1 bar. The device must be installed in such a
way, to prevent mechanical damage of sensor face. It is necessary carried out earthing by screw
which is placed on head of level meter.
14 . Maintenance
Maintenance of this equipment consists in verification of integrity of the level meter and of the
supply 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, respec -
tively. In case any visible defects are discovered, the manufacturer or reseller of this equipment
must be contacted immediately.
15 . Returning the device
Get in touch with us before returning your product (service@afriso.de).
16 . Warranty
See our terms and conditions at www.afriso.com or your purchase contract for information on
warranty.