Buhler BF420023 Manuel D'utilisation Et D'installation page 37

to Type Examination Certificate No. FM16ATEX0018X
13 Description of Equipment or Protective System:
The P1 sample gas pumps carry gases from various processes to analyzers. The gas circuit typically has
additional analysis components such as sample gas probe, filter, flow meter, cooler, etc. The sample gas
pump P1 consists of the main components, the pump head and motor. An eccentric converts the rotation of
the motor into an up and down motion using a connecting rod, thus producing the pump mechanism. Inside
the so-called pump body, above the bellows, which facilitates the pump motion, are inlet and outlet valves.
The user connects the gas circuits to the sample gas pump through screw-in connections.
The P1 sample gas pumps are available as 12Vdc, 24Vdc, 115Vac, 60Hz or 230Vac, 50Hz. The 115Vac
and 230Vac sample gas pumps are available with or without a cover over the electronics and motor. The
115Vac and 230Vac sample gas pumps have internal self resetting thermal protection built into the motor.
Model Code Structure:
4230abc1def00. P1.3 Sample Gas Pump.
a = Motor voltage: 1, 2, 3 or 4.
b = Pump head position: 1 or 2.
c = Pump head material: 1, 2, 3 or 4.
d = Screw-in connections / pipe fitting: 0, 1, 2, 3, 5 or 6.
e = Mounting accessories: 0, 1 or 2.
f = Housing: 0 or 1
14 Specific Conditions of Use:
1. The installer shall provide transient over-voltage protection of the supply connections at a voltage not to
exceed 140% of the voltage rating of the pump.
2. The apparatus shall be mounted in an enclosure providing a minimum degree of protection of IP54 in
accordance with EN 60079-15, and shall be installed within a tool-secured enclosure which meets the
requirements of EN 60079-0 and EN 60079-15.
3. To maintain a T4 to T3 temperature class care shall be taken to ensure the ambient temperature does
not exceed 50°C.
4. Temperature class are defined by the following table:
Type of Gas used in Pump
Non-Flammable
Non-Flammable
Flammable
15 Essential Health and Safety Requirements:
The relevant EHSRs that have not been addressed by the standards listed in this certificate have been
identified and assessed in the confidential report identified in item 8.
THIS CERTIFICATE MAY ONLY BE REPRODUCED IN ITS ENTIRETY AND WITHOUT CHANGE
FM Approvals Ltd. 1 Windsor Dials, Windsor, Berkshire, UK. SL4 1RS
T: +44 (0) 1753 750 000 F: +44 (0) 1753 868 700 E-mail:
F ATEX 029 (Apr/16)
SCHEDULE
Maximum Gas Temperature
50°C
70°C
50°C
atex@fmapprovals.com www.fmapprovals.com
Temperature Class
at installation site in gas path
T4
T3
T4
Page 2 of 3
---
---
T3