Ashcroft F5509, Installation And Maintenance Instruction Manual

Page: 6 / 27

Page 6 of 27
3.2 F5509 I#### and F6509 I#### with inductive proximity switches SJ2-N
Area of use:
Explosion risk areas Zone 1 and 2, and 21 and 22, risk from gases and dry dust.
Permitted temperatures:
The maximum occurring surface temperature of 95 °C was determined with no covering of dust and with no safety factor.
For dust clouds and dust layers the ignition temperature must be specified pursuant to ISO / IEC 80079-20-2

For dust clouds the maximum allowable medium temperature inside of the measuring instrument must not exceed
2/3 of the dust ignition temperature

For dust layer the maximum allowable medium temperature inside of the measuring instrument must be 75K lower
than the dust ignition temperature
Permitted ambient temperature -20 °C to +60 °C.
Permitted medium temperature in the pressure gauge < 85 °C.
Permitted environment air with usual oxygen content (21%), ambient pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar)
Warning! With gaseous media, the device temperature may increase due to compression heat. In
such cases, the rate of the pressure change must be regulated or the permitted temperature of the
measuring medium reduced.
Note:
For a change in differential pressure between 10 % and 90 % of the measuring range and a pulse frequency of <
0.06 Hz, the temperature increase is <10 K.
To avoid additional temperature increase, the devices should not be exposed to direct exposure to sunlight when in
operation!
EU design type test certification for the installed inductive proximity switches:
PTB 99 ATEX 2219X 4. supplement
The integrated proximity switch is indicated on the type label/wiring diagram.
The surrounding housing has protection class IP65 as per EN 60529.
For use in explosion risk areas, the devices must be connected to certified intrinsically safe power circuits:
Max. voltage
U
max
= 16 V
Max. current I
max
= 25 mA
Max. power P
max
= 64 mW
Device data (per contact):
max. internal capacitance
Ci max = 30 nF
max. internal inductance Li max = 100 μH
The permitted limit values for U
i
, I
i
and P
i
for the intrinsically safe feed power circuits depend on the proximity switch
type. They are to be found in the respective EU design type test certifications.
For the non-electrical part of the devices, the standards, EN ISO 80079-36, EN ISO 80079-37, EN 60079-0 and EN
60079-31 are applicable with regard to explosion protection. The relevant requirements of these standards are
satisfied.
The documentation for the mechanical part has been filed with TÜV-Nord-NB 0044 (see declaration of conformity).
Labeling: