Injection Series

PT4656XL - Sensor for injection molding applications


The PT 4656XL models are ideal for measuring melt pressure in a nozzle or manifold for injection applications. The flexible capillary extends from its electronics housing to the installed tip in the machine melt, which guarantees unrivaled strength and extended sensor life.

Each model has a built-in signal amplifier that has an optional output signal for data acquisition or SPC / SQC control programs. The amplified signal offers better immunity to interference than standard mV / V signals. The sensors are supplied as standard with a 1 / 2-20 “UNF-2A process connection and a durable Inconel 718 membrane. Thanks to the cap nut, installation is very easy even in areas with limited access.

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 design with exposed capillary XL

Melt pressure sensor in design with exposed capillary XL

Sensor terminal and compatible cable connector

Sensor terminal and compatible cable connector

Adjusting screws - used to adjust the zero and upper range of the sensor

Adjusting screws - used to adjust the zero and upper range of the sensor

Detail - Bayonet cable connector Amphenol 6-PIN

Detail - Bayonet cable connector Amphenol 6-PIN

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.

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High accuracy melt pressure transducer for space restricted areas

Our pressure sensors offer efficient, accurate, and durable solutions for reliable and safe pressure measurement. These sensors are used in a variety of industrial areas, where they monitor and measure the pressure of molten materials, ensuring optimal operation of production processes. Due to their resistance to high temperatures and pressures, which are typical for these applications, they represent a suitable choice for diverse uses. When selecting a sensor, it is important to consider the specific requirements of your application, such as temperature range, pressure range, and materials with which the sensor will interact. The correct choice of sensor guarantees reliable and accurate results and a long service life of the device without any problems. Installing the sensor into the mounting hole of the production line is simple.
However, if you have doubts about the proper installation, do not hesitate to contact our technicians. We are ready to provide support and offer the ideal solution for your application.

PT4656XL - Pressure sensor with flexible capillary in a version with a more durable membrane(XL).

The sensor is equipped with a durable flexible capillary throughout its entire length, which further enhances its lifespan and provides increased robustness.

This innovative pressure sensor is perfectly designed for injection molding applications with

 minimal installation space requirements. Thanks to its unique features and cutting-edge technical parameters, this sensor can handle demanding conditions in any environment. The manufacturer has spared no expense on advanced technologies and sophisticated production processes, allowing the sensor to achieve very small dimensions and low weight without any compromise to its exceptional performance. The pressure sensor is an ideal solution for a wide range of injection molding applications due to its exceptional resistance to vibrations, which it can withstand very well. A pleasant bonus is the easy and hassle-free installation of this sensor in spaces with limited dimensions.

Performance Characteristics 

Ranges (psi): 0 - 30 000 PSI
Accuracy: ±1% FSO
Repeatability: ±0.2% FSO 
Mounting Torque: 500 inch - lbs. maximum
Maximum Pressure: 2 x full range or 35,000 psi (whichever is less)
Material in Contact with Pressure Media: Inconel 718
Weight: 2 lbs


Temperature Characteristics


Transducer Diaphragm:
Maximum Diaphragm Temperature: 750ºF (400ºC)
Zero Shift due to Temperature Change: <20 psi/100°F (36 psi/100°C)
Electronics Housing:
Operating Temperature Range: -20°F to +160°F (-29°C to +71°C) 
Temperature Effects Over a Compensated Range of: +30°F To +160°F (-1°C To +71°C)
Thermal Effect on Zero: ±0.05% full scale/°F
Thermal Effect on Span: ±0.02% full scale/°F

Electrical Characteristics

Output: 0 to 5 Vdc
Input Voltage: 11 to 32 Vdc or ±12 to ±16 Vdc
Load Resistance: 2,000 Ohms minimum
Zero Balance Adjustment Range: ±15%
Span Adjustment Range: ±15%
Output: 1 to 6 Vdc
Input Voltage: 11 to 32 Vdc or ±12 to ±16 Vdc
Load Resistance: 2,000 Ohms minimum
Zero Balance Adjustment Range: ±15%
Span Adjustment Range:  ±15%
Output: 0 to 10 Vdc
Input Voltage 16 to 32 Vdc or ±14 to ±16 Vdc
Load Resistance: 2,000 Ohms minimum
Zero Balance Adjustment Range: ±15%
Span Adjustment Range: ±15%
Output: 1 to 11 Vdc
Input Voltage 16 to 32 Vdc or ±14 to ±16 Vdc
Load Resistance: 2,000 Ohms minimum
Zero Balance Adjustment Range: ±15%
Span Adjustment Range: ±15%

Ordering Guide for PT4655XL & PT4656XL Series

PT4655XL & PT4656XL Series - 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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