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Specifications
9.4
Environmental limits
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Electromagnetic compatibility (EMC)
Conforms to the requirements and tests for EMC Directive 89/336/EC,
as well as to EN 61000-6-3 concerning emitted interference and
EN 61000-6-2 concerning interference immunity.
Meets NAMUR recommendations.
Low Voltage Directive
Complies with 73/23/EC.
Pressure Equipment Directive (PED)
Complies with 97/23/EC Category III, module H.
Humidity
Relative humidity:
Condensation, icing:
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9.5
Electrical data and options
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aaaaaad
HART digital communication and 4 ... 20 mA output current
Power supply
The transmitter operates from 10.5 ... 45 V DC with no load and is
protected against reverse polarity connection (additional load allows
operations over 45 V DC).
With a backlit LCD display, the minimum voltage is 14 V DC.
For Ex ia and other intrinsically safe approved versions, the supply
voltage must not exceed 30 V DC.
Ripple
Maximum permissible supply voltage ripple during communication:
Complies with HART FSK "Physical Layer" specification rev. 8.1.
Load limitations
Total loop resistance at 4 ... 20 mA and HART:
Voltage
sup
ply
–
Minimum
R
k (
) Ω
IMPORTANT (NOTE)
A minimum of 250 Ω resistance is required for HART
communication.
LCD display (optional)
19-segment alphanumeric display (two lines, six characters) with
additional bar chart display; option of backlighting for customized
display of:
•
Output current in percent
•
Output current in mA
•
Freely selectable process variable
Diagnostic messages, alarms, measuring range upper limit violations,
and changes to the configuration are also displayed.
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72
Up to 100 %
Permissible
operating
voltage
(
VDC
)
22
5 ,
mA
Vibration resistance
Acceleration up to 2 g at frequencies up to 1,000 Hz (according to
IEC 60068-2-6).
Shock resistance (acc. to IEC 60068-2-27)
Acceleration:
Duration:
Protection type (humid and dusty atmospheres)
The transmitter is dust and sand-tight, and is protected against
immersion effects as defined by the following standards:
•
IEC EN 60529 (1989) with IP 67 (with IP 68 on request)
•
NEMA 4X
•
JIS C0920
Protection type with plug connection: IP 65
Output signal
4 ... 20 mA two-wire output, can be selected by user, linear or freely
programmable with 20 reference points.
HART® communication provides digital process variables (%, mA or
engineering units) superimposed on the 4 ... 20 mA signal (protocol
according to Bell 202 FSK standard).
Output current limits (according to NAMUR standard)
Overload condition:
Lower limit: 3.8 mA (configurable up to 3.5 mA)
Upper limit: 20.5 mA (configurable up to 22.5 mA)
Alarm current
Minimum alarm current:
Maximum alarm current:
Default setting:
SIL: Functional safety (optional)
According to IEC 61 508/61 511
Device with certificate of conformity for use in safety-related
applications, up to and including SIL 2.
265Gx, 265Ax
50 g
11 ms
Can be configured from
3.5 ... 4 mA,
Default setting: 3.6 mA
Can be configured from
20 ... 22.5 mA;
Default setting: 21 mA
Maximum alarm current
IM/265Gx/Ax-EN-07
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