Installation Of Explosion Protected Type; Fm Approval - YOKOGAWA Dpharp vigilantplant EJA110A User Manual

(c) Before conducting these tests, disconnect all signal
lines from the transmitter terminals. Perform the
tests in the following procedure:
• Insulation Resistance Test
1) Short-circuit the + and – SUPPLY terminals in the
terminal box.
2) Turn OFF the insulation tester. Then connect the
insulation tester plus (+) lead wire to the shorted
SUPPLY terminals and the minus (–) leadwire to
the grounding terminal.
3) Turn ON the insulation tester power and measure
the insulation resistance. The voltage should be
applied short as possible to verify that the insula-
tion resistance is at least 20 M .
4) After completing the test and being very careful not
to touch exposed conductors disconnect the
insulation tester and connect a 100 k
between the grounding terminal and the short-
circuiting SUPPLY terminals. Leave this resistor
connected at least one second to discharge any
static potential. Do not touch the terminals while it
is discharging.
• Dielectric Strength Test
1) Short-circuit the + and – SUPPLY terminals in the
terminal box.
2) Turn OFF the dielectric strength tester. Then
connect the tester between the shorted SUPPLY
terminals and the grounding terminal. Be sure to
connect the grounding lead of the dielectric strength
tester to the ground terminal.
3) Set the current limit on the dielectric strength tester
to 10 mA, then turn ON the power and gradually
increase the test voltage from '0' to the specified
voltage.
4) When the specified voltage is reached, hold it for
one minute.
5) After completing this test, slowly decrease the
voltage to avoid any voltage surges.
2.9 Installation of Explosion
Protected Type
In this section, further requirements and differences
and for explosionproof type instrument are described.
For explosionproof type instrument, the description in
this chapter is prior to other description in this users
manual.
For the intrinsically safe equipment and explosionproof
equipment, in case the instrument is not restored to its
original condition after any repair or modification
undertaken by the customer, intrinsically safe
construction or explosionproof construction is damaged
and may cause dangerous condition. Please contact
Yokogawa for any repair or modification required to
the instrument.
For F
explosion protected type, please refer to IM
01C22T02-01E and IM 01C22T03-00E respec-
tively.
This instrument is tested and certified as intrinsi-
cally safe type or explosionproof type. Please
note that the construction of the instrument,
resistor
installation, external wiring, maintenance or
repair is strictly restricted, and non-observance
or negligence of this restriction would result in
dangerous condition.
To preserve the safety of explosionproof equip-
ment requires great care during mounting,
wiring, and piping. Safety requirements also
place restrictions on maintenance and repair
activities. Please read the following sections very
carefully.

2.9.1 FM Approval

a. FM Intrinsically Safe Type
Caution for FM intrinsically safe type. (Following
contents refer "DOC. No. IFM012-A12 P.1 and 2.")
Note 1. Model EJA Series pressure transmitters
• Applicable Standard: FM3600, FM3610, FM3611,
FM3810, ANSI/NEMA250
• Intrinsically Safe for Class I, Division 1, Groups A,
B, C & D. Class II, Division 1, Groups E, F & G
and Class III, Division 1 Hazardous Locations.
• Nonincendive for Class I, Division 2, Groups A, B,
C & D. Class II, Division 2, Groups E, F & G and
Class III, Division 1 Hazardous Locations.
• Outdoor hazardous locations, NEMA 4X.
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
2-3
2. HANDLING CAUTIONS
NOTE
Fieldbus and PROFIBUS PA
OUNDATION
CAUTION
WARNING
with optional code /FS1 are applicable for
use in hazardous locations.
IM 01C21B01-01E