Yokogawa EJX930A - Manual (Page 69)

<10. General Specifications>
10-5
IM 01C25R01-01E
Supply & Load Requirements
(for HART protocol type) “◊”
(Optional features or safety approvals may
affect electrical requirements.)
With 24 V DC supply, up to a 570 Ω load can be
used.
See graph below.
E-10.5
0.0244
(Ω)
Power supply voltage E (V DC)
600
250
R
10.5 16.6 25.2 42
External
load
resistance
Digital
Communication
range
R=
F1003.ai
Figure 10.2 Relationship Between Power Supply
Voltage and External Load Resistance
Supply Voltage “◊”
[for HART]
10.5 to 42 V DC for general use and flameproof
type.
10.5 to 32 V DC for lightning protector (Option
code /A).
10.5 to 30 V DC for intrinsically safe, type n or
nonincendive.
Minimum voltage limited at 16.4 V DC for HART
communication.
[for Modbus]
9 to 30 V DC 250 mW for general use and
flameproof type, quiescent supply current 10
mA typical
Load (for HART protocol type)
0 to 1335Ω for operation
250 to 600Ω for digital communication
EMC Conformity Standards, ,
EN61326-1 Class A, Table2 (For use in
industrial locations)
EN61326-2-3
 Physical Specifications
Wetted Parts Materials
Diaphragm, Cover Flange, Process Connector,
Capsule Gasket, and Vent/Drain Plug Refer to
“Model and Suffix Code.”
Process Connector Gasket
PTFE Teflon
Fluorinated rubber for Option code /N2 and /N3
Non-wetted Parts Materials
Bolts
ASTM-B7 carbon steel, 316L SST stainless
steel, or ASTM grade 660 stainless steel
Housing
Low copper cast aluminum alloy with
polyurethane, mint-green paint (Munsell 5.6BG
3.3/2.9 or its equivalent) or ASTM CF-8M
stainless steel
Degrees of Protection
IP66/IP67, NEMA TYPE 4X
Cover O-rings
Buna-N, fluoro-rubber (option)
Nameplate and tag
316SST (including /N4 wired tag)
Fill Fluid
Silicone oil, Fluorinated oil (option)
Cable for RTD
External Temperature Input Code -1, -2, -3, -4
Oil-proof and a heat-resistant cable with a
shield
Outside diameter: 8.5 mm (0.335 inch),
Voltage rating: 300V
Temperature rating: –40 to 105°C (–40 to
221°F)
External Temperature Input Code -B,-C,-D
A heat-resistant FEP cable with a shield
Outside diameter: 4.3mm (0.168 inch)
Voltage rating: 300V
Temperature rating: –80 to 200°C (–112 to
392°F)
Flame resistance: NEC Article 800-CMP
Adaptation standard: NEC Article 725-PLTC
Note for using an extension cable:
When extending a temperature cable with using
an extension cable and a junction box, total cable
length including the original external temperature
cable must be less than 25 m. Use PE or XLPE
insulated cable for extension.
Cable gland
Nickel plating brass