Safety
Instruction manual 854 ATG
Page 9
2
Safety
2.1 Safety aspects of the 854 Advanced Technology Gauge
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
or II 1/2G Ex de IIB T6 Ga/Gb or
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,
certified by
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 : -40 to + 65 °C (-40 to +149 °F)
operating pressure
: max. 6 bar for medium pressure and chemical version
max. 40 bar (25 bar according PED) for high pressure version
relative humidity
: 0 - 100 %
ingress protection
: IP65 (NEMA 4), suitable for outdoor installation
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.
Warning
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).
For other applications contact Honeywell Enraf.
Warning
Do not use the instrument for anything else than its intended purpose.
Warning
Improper installation of cable glands, conduits or stopping plugs
Will invalidate the Ex approval of the 854 ATG.
Содержание 854 ATG Series
Страница 1: ...Instruction manual Series 854 ATG level gauge ...
Страница 2: ......
Страница 53: ...Appendix Instruction manual 854 ATG Page 51 ...
Страница 55: ...Appendix Instruction manual 854 ATG Page 53 ...
Страница 56: ...Appendix Page 54 Appendix C ASCII table ...
Страница 57: ...Appendix Instruction manual 854 ATG Page 55 Appendix D Display formats Level and Temperature display format A ...
Страница 58: ...Appendix Page 56 Level display format B Average gas temperature display format C ...
Страница 60: ...Appendix Page 58 HIMS pressure displays format F and H Servo density display format I ...
Страница 61: ...Appendix Instruction manual 854 ATG Page 59 Analog level output display format J Water level display format K ...
Страница 62: ...Appendix Page 60 Appendix E PCB layout XPU 2 HCU HCU SPU II GFC ...
Страница 67: ......