Safety; Safety Aspects Of The 854 Advanced Technology Gauge - Honeywell 854 ATG Series Instruction Manual

2

Safety

The 854 ATG is designed to measure the liquid level in storage tanks. The instrument is
suitable for flammable liquids (refer to the explosion proof certification data below).

2.1 Safety aspects of the 854 Advanced Technology Gauge

Do not use the instrument for anything else than its intended purpose.
For medium pressure versions (till 6 bar), the 854 ATG drum compartment housing is of aluminum, and for
chemical version it is of stainless steel.
For high pressure version (max. 25 bar), the 854 ATG housing is of stainless steel.
The housing of the 854 ATG is explosion-proof:
II 1/2 G Ex d IIB T6 Ga/Gb
•
II 1/2 G Ex d [ia Ga] IIB T6 Ga/Gb or II 1/2G Ex de [ia Ga] IIB T6 Ga/Gb;
acc. to KEMA 01ATEX2092 X, certified by KEMA, Netherlands
Ex d [ia Ga] IIB T6 Ga/Gb or Ex de [ia Ga] IIB T6 Ga/Gb; acc. to IECEx KEM 10.0007X,
•
KEMA, Netherlands
Class I, Division 1, Groups B, C & D acc. to ANSI/NFPA no. 70, certified by Factory Mutual Research
•
USA (FM no.: 3Q2A9.AX)
Environmental conditions for the 854 ATG are:
ambient temperature :
operating pressure
relative humidity
ingress protection
The drum compartment, which is in contact with the tank atmosphere, is separated from electronic
compartment. A magnetic coupling transfers the drum movement (hence, displacer movement) to electronic
compartment.
Wiring for intrinsically safe options, such as temperature or pressure measurement, is fed via two separate
cable entries.
The 854 ATG covers can optionally be provided with sealing facilities on blocking devices, which prevents
unauthorized opening.
Improper installation of cable glands, conduits or stopping plugs
Instruction manual 854 ATG
Warning
For other applications contact Honeywell Enraf.
Warning
or II 1/2G Ex de IIB T6 Ga/Gb or
-40 to + 65 ° C (-40 to +149 ° F)
: max. 6 bar for medium pressure and chemical version
max. 40 bar (25 bar according PED) for high pressure version
: 0 - 100 %
: IP65 (NEMA 4), suitable for outdoor installation
Warning
Will invalidate the Ex approval of the 854 ATG.
Safety
certified by
Page 9