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ADASH Ltd.
Adash 4900 - Vibrio Ex -
(option)
Specification according to 94/9/EC (ATEX) directive:
II 2 G Ex ib IIC T4 Gb
II
non-mining
2
high protection
G
Gas atmosphere
Ex ib
Principe of protection - Intrinsic Safety EN 60079-11 , Zone 1.
IIC
Gas group - Hydrogen.
T4
Temperature class – 135°C.
Gb
Equip. Protection level – Zone 1 (high protection).
IP65, -20°C≤Ta≤50°C
IP65
INGRESS PROTECTION, dust tight and against water jets
-20°C≤Ta≤50°C
Zones categories
Zone 0 (gases and vapours)/20 (dust)
Explosive atmosphere is present continuously, for long periods or frequently.
Zone 1/21
Explosive atmosphere is likely to occur under normal operation, occasionally.
Zone 2/22
Explosive atmosphere is unlikely to occur in normal operation and, if it does, will persist for a short
period only.
Using of Instrument
Thej A4900 - Vibrio Ex unit is certified for using in explosive risk areas zones 1 and 2 with all gases
group.
It means:
IIA (acetone, ethanol...),
IIB (formaldehyde, ether...)
IIC (hydrogen, acetylene, ...).
Next conditions must be complies:
1. Accelerometer type must be AC90x or AC91x.
2. Batteries type must be Energizer L91 (1.5V / LiFeS technology).
3. The instrument cannot be used in zone 0.
4. Changing of batteries cannot be done in explosive risk area.
5. The communication cable cannot be done in explosive risk area.
6. The operator must be grounded and the unit must be grounded thru the operator.
Further technical and contact information can be found at www.adash.com
ambient temperature range
The ATEX Appendix
60
Adash 4900 – Vibrio M
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