MDT4X2F Series
Pressure Sensors
With SIL2
SIL2 and PL‘c’ rating with local and
remote rezeroing capability
Features
■ Simple unshielded two-wire cable connection
in high noise
■ Efficient rezero adjustments can be made locally or
remotely to the sensor
■ 4-20 mA two-wire signal output
■ Installation for media temperatures up to 400°C
■ Adjustable zero and span, via side-mounted pots
■ Flexible capillary connection between stem with
diaphragm and housing
■ 3rd-party agency analysis (exida™) and
self-certified based on FMEDA analysis
and internal audit
■ Meets Performance Level ‘c’ as defined by the
Machinery Directive (Category 1)
■ Meets the following compliance directives, when
properly installed and used:
SIL2 & Machinery Directive EN ISO 13849-1
From lab to production,
providing a window into the process
Description
The MDT4X2F Pressure Sensor Series provides special
features for critical field applications in high noise
surroundings. The utilization of unshielded cables is
possible for long distance transmission free of noise
interference for the converted process pressure signal 4-20
mA. The MDT4X2F comes equipped with adjustable zero
and span side-mounted potentiometers. MDT4X2F Series
mA sensors can be rezeroed in two ways: locally via the zero
potentiometer, or remotely via shorting two pins
together (contact closure). Optional thermocouple or RTD
configurations are available to provide melt
temperature. The 4-20 mA output signal is rated PL‘c’ as
described in the Machinery Directive EN ISO 13849-1. The
MDT4X2F Series mA sensors are selfcertified based on the
evaluation reports of the respected third-party agency,
exida™. The MDT4X2F Series mA sensors have undergone
extensive FMEDA analysis (Failure Mode Effects and Diagnostic
Analysis). The FMEDA reports show that these sensors have been
evaluated for random failure requirements and meet
Performance Level ‘c’ (PL‘c’) as well as SIL2 (Safety
Integrity Level 2). The information in the FMEDA report can
be used by the customer’s system designer as part of the
overall qualification of the device in the system for PL‘c’ or
SIL compliance. Additional safety compliance is available
by adding a PL‘c’ / SIL2 rated relay that can be threshold
activated to put a machine into a safe condition, as
described in the Machinery Directive EN ISO 13849-1.
Dynisco
38 Forge Parkway
Franklin, MA 02038
USA
Hotline 1-800-Dynisco
www.dynisco.com
Phone +1 508 541 9400
Fax +1-508 541 6206
Email
Dynisco Europe, GmbH
Pfaffenstr. 21
74078 Heilbronn
Germany
Phone +49 7131 297 0
Fax +49 7131 297 166
Email
Dynisco Shanghai
Bldg. 2, No. 800, Shenfu Rd.
Minghang District
Shanghai, 201108, China
www.dynisco.com
Phone +86-21-34074072-819
Fax +86-21-34074025
Email:
MDT4X2F Series
Pressure Sensors
With SIL2 SIL2 and PL‘c’ rating with local and
remote rezeroing capability
Features
Q Simple unshielded two-wire cable connection in high noise
ambients
Q Efficient rezero adjustments can be made locally or remotely
to the sensor
Q 4-20 mA two-wire signal output
Q Installation for media temperatures up to 400˚C
Q Adjustable zero and span, via side-mounted pots
Q Flexible capillary connection between stem with diaphragm
and housing
Q 3rd-party agency analysis (exida™) and self-certified based
on FMEDA analysis and internal audit
Q Meets Performance Level ‘c’ as defined by the Machinery
Directive (Category 1)
Q Meets the following compliance directives, when properly
installed and used:
– SIL2
– Machinery Directive EN ISO 13849-1
The MDT4X2F Pressure Sensor Series provides special features for critical
field applications in high noise surroundings. The utilization of unshielded
cables is possible for long distance transmission free of noise interference
for the converted process pressure signal 4-20 mA. The MDT4X2F comes
equipped with adjustable zero and span side-mounted potentiometers.
MDT4X2F Series mA sensors can be rezeroed in two ways: locally via the
zero potentiometer, or remotely via shorting two pins together (contact
closure). Optional thermocouple or RTD configurations are available to
provide melt temperature.
The 4-20 mA output signal is rated PL‘c’ as described in the Machinery
Directive EN ISO 13849-1. The MDT4X2F Series mA sensors are self�certified based on the evaluation reports of the respected third-party
agency, exida™. The MDT4X2F Series mA sensors have undergone
extensive FMEDA analysis (Failure Mode Effects and Diagnostic Analysis).
The FMEDA reports show that these sensors have been evaluated for
random failure requirements and meet Performance Level ‘c’ (PL‘c’) as
well as SIL2 (Safety Integrity Level 2). The information in the FMEDA
report can be used by the customer’s system designer as part of
the overall qualification of the device in the system for PL‘c’ or SIL
compliance. Additional safety compliance is available by adding a PL‘c’ /
SIL2 rated relay that can be threshold activated to put a machine into a safe
condition, as described in the Machinery Directive EN ISO 13849-1.
Description
SIL2 and PL‘c’ rating with local and remote rezeroing capability
Performance Characteristics
Pressure Range: 0-17 bar to 0-2000 bar
Accuracy:
MDT422F ±0.5% FSO
(up to 50 bar ±1% FSO);
MDT462F ±1% FSO
Repeatability:
MDT422F ±0.1% FSO
(up to 50 bar ±0.2% FSO);
MDT462F ±0.2% FSO
Resolution: Infnite
Maximum Overload
(without influencing
operating data):
2x pressure range for range
1000 and 1400 bar max.
1750 bar and max. 2400 bar
for range 2000 bar
Burst Pressure: 6x pressure range max.
3000 bar
Material in Contact
with Media:
15-5 PH SST (Mat. No.
1.4545) DyMax® coated
ELECTRICAL CHARACTERISTICS
Configuration: 4-arm Wheatstone
bridge strain gage
Internal Shunt Calibration: 80% of full scale ±1%
Output Signal: 2-wire 4-20 mA
Supply Voltage: 12-36 Vdc
Zero Balance: ±1%
Rezero Initiation:
Locally via zero potentiometer,
or remotely via short circuit
between pins “D” and “F”
Range Calibration 80% FSO:
“Short circuit” between
connections pins “E” and “F”
at the sensor or externally
from the control room
Load Resistance: Maximum 1200* at 36 Vdc
Maximum 500* at 24 Vdc
Isolation Resistance: 1000M* at 50 Vdc
TEMPERATURE INFLUENCE
Diaphragm
Max. Temperature: 400°C
Zero Shift Due to
Temperature Change:
MDT422F <0.2 bar / 10°C
MDT462F <0.4 bar / 10°C
Housing
Max. Temperature: 85°C
Zero Shift Due to
Temperature Change: ± 0.2% FSO / 10°C
Sensitivity Shift Due to
Temperature Change:
MDT422F <0.1% FSO/10°C
(up to 50 bar ±0.2% FSO/10°C);
MDT462F ±0.3% FSO/10°C
APPROVALS & SELF CERTIFICATIONS
CE: Directive 2004/108/EC
ISO: ISO 9001:2008 production
environment
PL’c’:
EN ISO 13849-1 meeting the
performance requirements of a
safety-related part of a control
system for Performance Level
‘c’ (PL’c’) safety system when
installed per Category 1
SIL2 : Safety Integrity Level 2