Pressure sensors

MDT420 | 422 | TDT432 - Melt pressure sensors in a design with a fixed rod, a flexible capillary or a combined design with a temperature sensor.

MDT420 | 422 | TDT432

The MDT series signal amplifiers convert the process pressure into an amplified signal for long-distance transmission without interference. All models are available in 4-20 mA, 0-5 VDC and 0-10 VDC, 2-, 3- and 4-wire variants. Many of the features found in the standard Dynisco MDA series have been incorporated into the enhanced MDT series, including the proven strain gauge sensor design for stable operation, including the flexible capillary design. The sensors have an internal digital calibration.

All sensors in this series can be configured according to your needs. Contact us, we will be happy to help you.

Melt pressure sensor in a design with a fixed stem

Melt pressure sensor in a design with a fixed stem

Melt pressure sensor in a design with a flexible capillary

Melt pressure sensor in a design with a flexible capillary

Sensor terminal and compatible cable connector

Sensor terminal and compatible cable connector

Detail - Bayonet cable connector Amphenol 6-PIN

Detail - Bayonet cable connector Amphenol 6-PIN

Safety Integrity Level - SIL2

Safety Integrity Level - SIL2

Inquiry system 

Configure your own product according to your requirements and needs. If you are unsure of the configuration, provide us in the notes the necessary information about the existing sensor or product, even a competitor. We will be happy to help you find an alternative Dynisco product. If your request is urgent, let us know. We will do our best to help you resolve this situation to your satisfaction as quickly as possible. If we have all the information, we are able to offer a model with minor differences, which is in stock and you can have another product available the next day.

If you need more information do not hesitate to contact us.

Dynisco configuration code:

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High Accuracy, Simple Installation, Repeatability And Reliability

Dyniscos MDT-series amplified transducers convert process pressure into an amplified signal for long distance transmission free of noise interference.

All models are available in 4-20 mA, 0-5 VDC and 0-10 VDC, 2-, 3- and 4-wire high level outputs. Many of the features found in Dynisco's standard MDA-series have been incorporated into the amplified MDT-series, including proven bonded strain gauge construction for stable operation, a flexible armored capillary between the rigid stem and the amplifier housing and a flush diaphragm. Another advantage is the electrical built-in calibration.

⚠ WARNING: This product can expose you to chemicals including mercury and lead, which is known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov.

MDT420 Pressure Sensors - With rigid stem


Rigid Stem pressure sensors are easily installed into the mounting hole of the production line, ensuring a simple and robust design that is suitable for applications where the sensor is not exposed to radiant heat from the line and the electronics are not subjected to extreme temperatures. We do not recommend installing these sensors in a vertical position above the line (12 o'clock position), as radiant heat can negatively affect the sensor's electronics lifespan. In such cases, we recommend using a sensor design with a flexible capillary, which allows the electronics to be diverted away from the radiant heat, ensuring a long sensor life. The main advantages of this type of sensor include resistance to impacts and vibrations, enabling them to withstand mechanical stress, which increases their lifespan and reduces the need for maintenance. They also feature high accuracy, ensured by quality materials and advanced measurement technology, which is crucial for efficient process control.

MDT422 Pressure Sensors - With rigid stem and flexible capillary


Pressure sensors with flexible capillaries represent a professional solution suitable for applications with limited space or exposure to radiant heat from heating elements in production lines. Thanks to the thoughtful extended design, the sensor's electronics are located out of reach of the radiant heat source, reducing the risk of damage.

The flexible capillary is designed to be resistant to damage and allow a high degree of bending, which facilitates installation and handling of the sensor. It is essential to properly secure the sensor head to the included adapter, which is part of the package. To achieve optimal performance, we recommend placing the adapter on a part of the machine where unwanted vibrations or shocks do not occur, as these could negatively affect the sensor.

The length of the rod and flexible capillary can be customized according to individual needs, as well as other optional components. This ensures maximum flexibility in integrating the sensor into a wide range of industrial applications.

TDT432 Pressure Sensors - Combined sensor with rigid stem, flexible capillary and built-in temperature sensor


Combined pressure sensors with flexible capillaries represent a professional solution suitable for applications with limited space or exposure to radiant heat from heating elements in production lines. Thanks to the thoughtful extended design, the sensor's electronics are located out of reach of the radiant heat source, reducing the risk of damage.

Additionally, these sensors are equipped with a temperature sensor, allowing the customer to choose the type of sensor, whether it is a type J, K thermocouple, or an RTD (pt100). By selecting a compatible sensor for temperature measurement, the customer obtains information about the melt temperature from a single process connection, increasing measurement efficiency and accuracy.

The flexible capillary is designed to be resistant to damage and allow a high degree of bending, which facilitates installation and handling of the sensor. It is essential to properly secure the sensor head to the included adapter, which is part of the package. To achieve optimal performance, we recommend placing the adapter on a part of the machine where unwanted vibrations or shocks do not occur, as these could negatively affect the sensor.

The length of the rod and flexible capillary can be customized according to individual needs, as well as other optional components. This ensures maximum flexibility in integrating the sensor into a wide range of industrial applications.

 

Electrical Characteristics

 
Pressure range Four-arm Wheatstone bridge strain gage (DMS)
Internal Shunt-Calibration: 80% of full scale ±5%
Leakage Resistance: 1000 MΩ at 50 V DC
MDT4XXF
2-wire mA
Output Signal: 4-20 mA
Supply Voltage: 10-36 V DC
Zero Balance: 2% ±5% of full scale adjustable
Load Resistance: Maximum 1.2Ω at 36 V
MDT4XX K / L / M / N
3-wire V DC
Output Signal: K: 0-5 V DC, M: 1-6 V DC
L: 0-10 V DC, N: 1-11 V DC
Supply Voltage: 15-32 V DC
Load Resistance: K: >5 kΩ, M: >5 kΩ,
L: >10 kΩ, N: >10 kΩ
MDT4XX G / H
4-wire V DC
Output Signal: G: 0-5 V DC
H: 0-10 V DC
Supply Voltage: dual ±10 to ±16 V DC
single 19-32 V DC
Load Resistance: G: >5 kΩ, H: >10 kΩ

  

Temperature Characteristics 

 

Diaphragm
 
Max. Temperature:  400°C 
Zero Shift (due to temperature change): MDT422 X < 0.2 bar/10ºC
MDT462 X < 0.4 bar/10ºC
Housing  
 
Max. Temperature: 85ºC
Zero Shift (due to temperature change): ±0.2% f.s.v./10°C 
Sensitivity Shift (due to temperature change): MDT422 X ±0.1% f.s.v./10ºC up to 50 bar ±0.2% f.s.v./10ºC
MDT462 X ±0.4% f.s.v./10ºC

Technical Data and Operating Characteristics

 

   
Pressure Range: 0 - 17 bar to 0 - 2000 bar
Accuracy: MDT 422 X ±0.5% f.s.v. up to 50 bar ±1% f.s.v.
MDT 462 X ±1.0% f.s.v
Repeatability: MDT 422 ±0.1% f.s.v. up to 50 bar ±0.2% f.s.v.
MDT 462 X ±0.2% f.s.v
Resolution: infinite
Maximum Overload
(without influencing operating data):
2 x pressure range for range 1000 and 1400 bar max. 1750 bar and max. 2400 bar for range 2000 bar
Burst Pressure: 6 x pressure range max. 3000 bar
Material in Contact with Media: 15-5 Mat. No. 1.4545, DyMAX coated

 

Ordering Guide for MDT Pressure Sensors

MDT420 - Dimensions  

All dimensions are inches (mm) unless otherwise specified.

MDT422 - Dimensions  

All dimensions are inches (mm) unless otherwise specified.

TDT432 - Dimensions  

All dimensions are inches (mm) unless otherwise specified.

Torque wrench Wera 20 - 100 Nm

Torque wrench Wera 075611 Click-Torque B 2 with switch ratchet 3/8 "(20 - 100 Nm)

Wera Click-Torque torque wrenches are supplied as switch ratchets (with connection dimensions 1/4 ", 3/8", 1/2 "and 3/4") or with clamping for socket tools (9x12 mm, 14x18 mm) for tightening torques from 2.5 Nm up to 1,000 Nm.
All Wera Click-Torque torque wrenches manufactured in accordance with DIN EN ISO 6789 are supplied with a declaration of conformity.

Transducer Mounting Hole Cleaning Tool Kit

Installation of transducers into improperly cleaned or sized holes is one of the major causes of damage to these instruments. With this kit, the .312" tip diameter hole, the 45 degree seating surface, and the .451" hole can be cleaned. The kit includes a gauging plug which is used to verify that the hole has been correctly machined and cleaned. M10 and M18 cleaning kits also available.
 

Transducer Mounting Hole Machining Tool Kit

The Dynisco Transducer Mounting Hole Machining Tool Kit contains all of the necessary drills and taps to prepare a standard 1/2 - 20 UNF transducer mounting hole and the 45 degree seat. All tools included in this kit are made of premium grade, high strength tool steel. Care should be taken in the use of proper speeds and feeds, lubricants, and a method to assure continual alignment of each progressing tool. M10 and M18 kits are also available.

1480 Panel Indicator

The 1480 is a Universal Pressure or Temperature Input Indicator with single or dual configurable alarms, as well as optional linear retransmission of displayed Process Variable. Ideal for use in Extrusion applications. 

1490 Process Panel Indicator

The 1490 is a Universal Input Indicator with single or dual configurable alarms, optional linear retransmission of Process Variable, Transmitter power supply option as well as optional Modbus communications. 

UPR 900 Panel Indicator

The UPR900 is a compact 1/4 DIN process indicator. The UPR900 can display your choice of engineering units related to a selectable range of input types. Add an optional secondary input for an all-in-one display of polymer melt pressure and temperature. The secondary input can be strain gauge to indicate differential pressure measurement. The UPR900 includes two standard assignable alarms with the option to add a 3rd. 

ATC990 Process Panel Controller

The ATC990 with a graphical/text LCD display is a universal input process controller with advanced functionality including Trend views as well as Digital Inputs, USB and data logging options. It provides a cost-effective way to control a single process parameter, such as for a plastics extruder. Designed to improve user efficiency many features are integrated to reduce commissioning time, simplify operation and minimize maintenance downtime. Reliably auto-tune and alarm on strain gauge, DC voltage, temperature or current inputs.

PPS1210 calibration pump

The PPS1210 pressure calibration pump with heated pressure port enables fast and accurate inspection of melt pressure sensors directly in the laboratory or directly in the factory. Thanks to its compact dimensions, it is easily portable.

Certificates & Approvals

Overview of Available Certificates and Approvals: Visit this link, which will take you to a page with a comprehensive list of current certificates and approvals for our products. Here, you can verify that our offerings meet the highest standards of quality and safety.


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