<2. Notes on Handling>
2-4
IM 01C50E01-01EN
WARNING
The battery pack may be replaced in a
hazardous area. The battery pack has
surface resistivity greater than 1G ohm and
must be properly installed in the enclosure
of the transmitter. Care must be taken during
transportation to and from the point of installation
to prevent electrostatic charge build-up.
2.7.1 FM Approval
Caution for FM intrinsically safe type. (Following
contents refer “DOC. No. IFM038-A20”)
Note 1. Model YTA Series temperature transmitters
with optional code /FS17 are applicable for
use in hazardous locations.
• Applicable Standard: Class 3600, Class
3610, Class 3611, Class 3810, NEMA 250,
ANSI/ISA-60079-0, ANSI/ISA-60079-11
• Intrinsically Safe for Class I, Division 1,
Groups A, B, C & D, Class II, Division 1,
Groups E, F & G and Class III, Division1,
Class I, Zone 0, in Hazardous Locations,
AEx ia IIC
• Nonincendive for Class I, Division 2,
Groups A, B, C & D, Class II, Division 2,
Groups F & G and Class III, Division 1,
Class I, Zone 2,
Groups IIC, in Hazardous Locations.
• Enclosure: NEMA 4X (Indoors and outdoors)
• Temperature Class: T4
• Ambient temperature: –50 to 70°C
Note 2. Output Parameters
• Sensor Circuit ( 1 to 5 )
Maximum Output Voltage Voc: 6.6V
Maximum Output Current Isc: 66mA
Maximum Output Power Po: 109mW
Maximum External Capacitance Ca: 22uF
Maximum External Inductance La: 8.1mH
• The above parameters apply when one of
the two conditions below is given:
- the total Li of the external circuit (excluding
the cable) is < 1% of the La value or
- the total Ci of the external circuit (excluding
the cable) is < 1% of the Ca value.
• The above parameters are reduced to 50%
when both of the two conditions below are
given:
- the total Li of the external circuit (excluding
the cable) is ≥ 1% of the La value and
- the total Ci of the external circuit (excluding
the cable) is ≥ 1% of the Ca value.
• The reduced capacitance of the external
circuit (including cable) shall not be greater
than 1μF for Group IIB and 600nF for Group
IIC.
• For the sensor input circuitry, these entity
parameters must be taken into account
when installed.
• Installation Requirements between
temperature transmitter and sensor:
Voc ≤ Vsi, Isc ≤ Isi, Po ≤ Psi
Ca ≥ Co + Ccable, La ≥Lo + Lcable
Vsi, Isi, Psi, Co and Lo are parameters of the sensor.
• Wiring for Nonincendive according to
Nonincendive field wiring standard.
Note 3. Installation
• Installation should be in accordance with
ANSI/ISA RP12.6 “Installation of Intrinsically
Safe Systems for Hazardous (Classified)
Locations” and the National Electric Code
(ANSI/NFPA 70).
• Dust-tight conduit seal must be used when
installed in a Class II, III, Group E, F and G
environments.
• Note a warning label worded
“SUBSTITUTION OF COMPONENTS MAY
IMPAIR INTRINSIC SAFETY,” and
“INSTALL IN ACCORDANCE WITH DOC.
NO. IFM038-A20”.
