Emerson IFT9701 - Manual (Page 15)

Model IFT9701 Transmitter Instruction Manual 7
Getting Started continued
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Mounting the
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2.1.4 Visibility of tags
For personal and system safety, all tags attached to the transmitter housing must remain visible. Clean
or replace them as necessary.
2.2 Transmitters approved for ATEX Zone 1
If the transmitter carries an ATEX Zone 1 approval, wiring compartments are labeled as shown in
Figure 2-2.
• The sensor wiring compartment is rated EEx i (intrinsically safe), and may be opened at any
time. See Label 1 in Figure 2-2.
• The field wiring compartment is rated EEx e (increased safety), and should remain closed
when power is on. See Label 2 in Figure 2-2.
• The circuit board compartment is rated EEx d (flameproof), and should remain closed at all
times after the transmitter has been installed. If the transmitter is approved by ATEX as
flameproof, the compartment has a lockout device, shown in Figure 2-2. The lockout device
must be loosened and rotated before the compartment cover can be unscrewed.
WARNING
Explosion hazard
The circuit board compartment is rated EEx d
(flameproof), and should remain closed at all times after
the flowmeter has been installed.
To avoid risk of explosion in an explosive atmosphere:
• Read label that points to compartment cover before
accessing circuit board compartment. Figure 2-2
shows the location of the labels on the transmitter
housing.
• Shut off power, and wait at least 2 minutes before
removing EEx d (circuit board) compartment cover.
Figure 2-2 also identifies the EEx e (field wiring), EEx i
(sensor wiring), and EEx d (circuit board)
compartments.