Dynisco MDT Series Manuale utente
1
Operating manual
MDT Series
4-20mA with Auto Zero
Pressure transmitters with integrated amplifier
for high temperatures and high pressures
2
Table of Contents
Content
General
Notes on safety
Technical data
Function
Transport/
delivery
Installation
Commissioning
Maintenance
Accessories
Troubleshooting
- Declaration of
conformity
Chapter
1
2
3
4
5
6
7
8
9
10
11
Page
3
5
7
14
16
17
25
27
30
31
32
Icon
3
Operating manual
1. General
1.1 Important information 3
1.2 Copyright 3
1.3 Explanation of icons 4
1.4 Abbreviations 4
1.5 Correct use 4
1.6 User’s obligations 4
1.1 Important information
This manual applies to the MDT 420x/460x and PT 420x/
460x series, 2-wire with Auto Zero, only. It must be kept
neartheequipmentinareadilyandimmediatelyaccessible
location at all times.
The content of this manual must be read, understood and
followed in all points by all relevant people. This applies
in particular to the notes on safety. Following the safety
instructions will help to prevent accidents, defects and
malfunctions.
DYNISCO will not be held liable for any injury, loss or
damage resulting from failure to follow the instructions in
this manual.
If malfunctions occur in spite of having followed the
operating instructions, please contact the DYNISCO
customer service department (see chapter 8,
Maintenance).
This applies in particular during the warranty period.
1.2 Copyright
Copyright law requires that this manual be used for in-
house purposes only.
Allreproduction, even partially andfor in-house purposes,
requires the approval of DYNISCO. This manual may not
be forwarded to third parties.
4
1.3 Explanation of icons
The manual uses icons to indicate information
pertaining to safety:
Risk of destruction or damage to
equipment, machines or installations
General danger to life or limb
Specific danger to life or limb
You MUST do this
The safety instructions are provided again in the
individual chapters of the manual.
1.4 Abbreviations
The following abbreviations are used:
OM Operating manual
PT pressure transmitter
f.s. of full scale
1.5 Correct use
The purpose of the MDT or PT 420x/460x pressure
transmitter is to measure pressure in plastic melt as part
of a larger overall system. It contains an integrated signal
amplifier. The MDT or PT 420x/460x can be used in
media temperatures up to 400°C.
If the PT is used in other applications, the safety and
accidentprevention regulations specific to thatapplication
must be followed.
When using the PT as a safety component in
accordance with the EC Machine Directive, Annex
IIc, the equipment manufacturer must take any
necessary precautions to ensure that malfunctions
of the PT cannot cause damage or injury.
1.6 User’s obligations
The operator or owner of the larger overall system, e.g.
a machine, is responsible for following the safety and
accident prevention regulations that apply to the specific
application.
5
Operating manual
2. Notes on safety
The operator or owner of the larger overall
system is responsible for following the safety
andaccident prevention regulations that apply
to the specific application.
Toxic hazard!
The PT contains a small amount (7 mm³) of
mercury (Hg) as its transmission medium. If
the diaphragm is damaged, mercury may
escape.
Never transport or store the PT without the
protective shell bolted in place. Remove the
shell shortly before installation.
If mercury is inhaled or swallowed, seek
medical attention immediately!
Mercury is hazardous waste and must be
disposed of in accordance with applicable
laws. DYNISCO will accept defective PTs.
If mercury escapes, use airtight packaging!
When planning machinery and using the PT,
follow the safety and accident prevention
regulations that apply to your application,
e.g.:
●EN 60204, Electrical equipment in
machines.
●EN 292, Machine safety, general design
guidelines.
●DIN 57 100 Part 410, Protection against
electric shock.
Mounting and electrical connection of the PT
mustbe done by specialists withEMC training,
following all applicable regulations, and in
pressureless, voltage-free condition with
the machine switched off.
The machine must be secured against
being switched back on!
Burn hazard!
The PT must be removed with the melt in
molten condition. The PT can be very hot
when removed.
Wear protective gloves!
6
3. Technical Data
3.1 Ordering guide 6
3.2 Ordering example 6
3.3 Performance characteristics 7
3.3.1 Accuracy 7
3.3.2 Repeatability 7
3.3.3 Resolution 7
3.4 Mechanical configurations 7
3.5 Pressure side connection 7
3.6 Pressure ranges 7
3.6.1 Pressure ranges in bar 7
3.6.2 Max. Overload 8
3.6.3 Burst pressure 8
3.6.4 Limit frequency 8
3.7 Rigid stem/flexible stem 8
3.8 Electrical Data 8
3.9 Temperature influence 9
3.10 EMC requirements 9
3.11 Materials 9
3.12 Mounting torque 9
3.13 Environmental Protection 9
3.14 Weight 9
3.15 Dimensions 10
3.1 Ordering guide
xDT4xx x- xx - xxx - x - Option
Rigid stem/flexible stem
Pressure range
Pressure side connection
Amplifier
Perf. characteristics
Mechanical configuration
The exact meanings of the letter/digit combinations
are given in the corresponding sections of chapter 3.
3.2 Ordering example
MDT462 F - ½ - 5C - 15/46
Melt PT
Perf. char. ± 1,0 % full scale
Amplifier: 2-wire 4-20mA
Thread: ½ = ½" - 20 UNF
Pressure range: 0 - 500 bar
Stem length:15 = 152 mm
Flex. stem:46 = 457 mm
7
Operating manual
3.3 Performance characteristics (xDT4Xx x-xx-xxx-xx)
3.3.1 Accuracy
(Linearity and hysteresis at T = constant)
xDT42x x ± 0,5 % of full scale
(35 bar and 50 bar ± 1 % of full scale)
xDT46x x ± 1 % of full scale
3.3.2 Repeatability
xDT42x x ± 0,1 % of full scale
(35 bar and 50 bar ± 0,2 % of full scale)
xDT46x x ± 0,2 % of full scale
3.3.3 Resolution infinite
3.4 Mechanical configurations (XDT4xX x-xx-xxx-xx)
MDT4x0stem version
MDT4x2rigid stem and flexible stem
TDT432/463 combined pressure and
temperature measurement
MDT435/467 transducer for limited
installation space
3.5 Pressure side connection (xDT4xx x-XX-xxx-xx)
½ =½" 20 UNF 2A
M18 = M18 x 1,5
3.6 Pressure ranges (xDT4xx x-xx-XXX-xx)
3.6.1 Pressure ranges in bar
Model number Permitted pressure range
in bar
xDT4xx x-xx-17-xx 0 - 17
series 42x x/43x x only
xDT4xx x-xx-35-xx 0 - 35
series 42x x/43x x only
xDT4xx x-xx-50-xx 0 - 50
series 42x x/43x x only
xDT4xx x-xx-1C-xx 0 - 100
xDT4xx x-xx-2C-xx 0 - 200
xDT4xx x-xx-3,5C-xx 0 - 350
xDT4xx x-xx-5C-xx 0 - 500
xDT4xx x-xx-7C-xx 0 - 700
xDT4xx x-xx-1M-xx 0 - 1000
xDT4xx x-xx-1,4M-xx 0 - 1400
xDT4xx x-xx-2M-xx 0 - 2000
Other pressure ranges on request
8
3.6.2 Max. Overload (without influencing operating
data)
2 x full scale pressure up to 700 bar
(for 1000 bar and 1400 bar range: max. 1750 bar,
and 2450 bar for the 2000 bar range)
3.6.3 Burst pressure 6 x nominal value,
max. 3000 bar
3.6.4 Limit frequency 50 Hz [-3db]
3.7 Rigid stem/flexible stem (xDT4xx x-xx-xxx-XX)
15 = 152 mm standard length for rigid version
15/46 = 152 mm stem length / 457 mm flexible stem
Other lengths on request
3.8 Electrical data (xDT4xx X-xx-xxx-xx)
Configuration 4-arm Wheatstone bridge
strain gauge with int. amplifier
Output signal
xDT4xx F-xx-xxx-xx 2-wire 4 - 20 mA
Strain resistance
2 - wire mA RL< 1200 Ωat US= 36 V
RL< 50 Ωat US= 14 V
Supply voltage / power consumption
2 - wire mA 14 - 36 VDC
Calibration function 80 % ± 0,5 % of full scale
(room temperature) output by externally con-
necting contacts E and F
Zero balance Use button or externally
connected contacts D + F to
zero-balance the unit
Leakage resistance > 1000 MΩat 50 V
3.9 Temperature influence
Electronics housing
Max. housing temperature -25 °C - +85 °C
Compensated temp. range 0 °C - +70 °C
9
Operating manual
Zero shift due to temperature change on electronics
housing
xDT 420 x series ±0,2% full scale / 10 °C typ.
xDT 460 x series ±0,2% full scale / 10 °C typ.
Sensitivity shift due to temperature change on
electronics housing
xDT 420 x series ±0,2% full scale / 10 °C typ.
xDT 460 x series ±0,2% full scale / 10 °C typ.
Diaphragm (in contact with media)
Maximum temperature
at the diaphragm 400 °C
Zero shift due to temperature change on the
diaphragm
xDT 420 x series <0,2 bar / 10 °C typ.
xDT 460 x series < 0,4 bar / 10 °C typ.
Sensitivity shift due to temperature change on the
diaphragm
xDT 420 x series < 0,1 % f. s. / 10 °C typ.
(35 and 50 bar < 0,2 % f. s. / 10 °C typ.)
xDT 460 x series < 0,4 % f. s. / 10 °C typ.
3.10 EMC requirements
Conforming to in accordance with EMC directive.
Emitted interference DIN EN 50081-1
(residential area)
Immunity DIN EN 50082-2
(industrial area)
3.11 Materials
Diaphragm 15-5PH Mat.No. 1.4545
Armoloy coated
Stem 15-5PH Mat.No. 1.4545
3.12 Mounting torque
max. 50 Nm (500 inch-lbs.)
min. 12 Nm (100 inch-lbs.)
3.13 Environmental protection to IEC 529
PT housing IP54 (without connector)
Standard connector
PT06A-10-6S(SR) IP40
Connector PT06W-10-6S IP64
3.14 Weight 1,1 kg
Indice
Altri manuali Dynisco Trasmettitore
Dynisco
Dynisco IPX II Series Manuale utente
Dynisco
Dynisco SPX2 Series Manuale utente
Dynisco
Dynisco PT460DN Manuale utente
Dynisco
Dynisco SPX2 Series Manuale utente
Dynisco
Dynisco SPX228 Manuale utente
Dynisco
Dynisco PT303 Manuale utente
Dynisco
Dynisco 840 Series Manuale utente
Dynisco
Dynisco 240 Series Manuale utente
Dynisco
Dynisco TX180 Manuale utente
Dynisco
Dynisco EIT Series Manuale utente
