Checking the relay output function is accomplished by proof test every 1 year. And
contact welding shall be check by the proof test.
The relay contacts must be protected with a fuse rated 0.6 of the nominal specified
relay contact current
Special conditions for SIL 3
- The use of the device is allowed only in a 1oo2 - structure.
- The 4-20 mA output of the device must be monitored regarding deviations.
O: Indicates that said hazardous substance contained in all of the homogeneous
materials for this part is below the limit requirement of GB/T 26572.
X: Indicates that said hazardous substance contained in at least one of the
homogeneous materials used for this part is above the limit requirement of
Part Name
Hazardous Substances
(Pb)
(Hg)
(Cd)
Chromium
(
Cr(VI)
)
biphenyls
(PBB)
Polybrominated
diphenyl ethers
(PBDE)
DF-8500
Gas Detector
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