- No fill material
- RoHS compliant for sustainability programs
- Robust, thicker Inconel diaphragm is coated with DyMax®
- Optional Type J or K thermocouple is available to provide a melt temperature signal as well as a 4-20 mA temperature output
- Equipped with a 1/2-20 UNF for installation in standard transducer mounting holes
- Also available to install 1/2-20 UNF units into a Button Seal application
- Diaphragm composition of Inconel 718 coated with the abrasion resistant properties of DyMax®
- Sealed, welded shell and electrical connection available if washdown capability is needed for food or mechanical applications (not available if thermocouple option TCx is selected)
- Available with thermocouple temperature output
- 250-10,000 PSI pressure range capability
- HART digital communication available
- Direct measurement tip is a simple and elegant design with a more robust diaphragm
- Direct measurement of process reduces errors transferred by complicated internal support structures, transmission fill materials, or moving push rods
- Designed to work with universal pressure indicators
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- Dynisco ECHO™ melt pressure sensors for extrusion applications
- Cost-effective sensor series with high reliability and accuracy
- Outputs available: 3.33 mV/V, 0–10 VDC, 0–5 VDC or 4–20 mA
- Accuracy better than ±0.5% FS
- TAiN-coated diaphragm as standard
- Optional integrated temperature sensor available
- 2-year manufacturer warranty
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- Dynisco EPR3 melt pressure sensor with push-rod technology
- Alternative to PT420 and PT460 filled melt pressure sensors
- Ideal for applications where fill fluids are not desirable
- Pressure ranges from 0–100 bar to 0–700 bar (0–1,500 to 0–10,000 psi)
- Measures media temperatures up to 400 °C
- Accuracy better than ±0.5% FSO
- Integrated 80% shunt calibration
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- Adjustable zero and span
- Push-rod technology, non-liquid filled system
- Accuracy better than +/- 0.5%
- DyMax® coated convoluted SST wetted parts
- 4 - 20 mA output
- Internal 80% shunt calibration
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- Dynisco LDA415 pressure sensor for washdown extrusion applications
- Suitable for food and medical applications
- NaK high-temperature fill for processes up to 538 °C
- Pressure ranges from 0–35 bar to 0–700 bar
- 3.33 mV/V output signal
- All-welded stainless steel construction with washdown capability
- Integrated 80% shunt calibration
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- Dynisco MDA410 pressure sensor for non-mercury food and medical extrusion applications
- NaK high-temperature fill meets FDA and USDA requirements
- Pressure ranges from 0–35 bar to 0–700 bar
- Accuracy better than ±0.25%
- 3.33 mV/V output signal
- Inconel 718 diaphragm for high process temperatures
- Media temperatures up to 540 °C
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- Dynisco PT410/412 alternate fill pressure sensors for food and medical applications
- NaK fill material meets FDA and USDA requirements
- Measurement up to 538 °C
- Accuracy better than ±0.25% FSO
- Pressure ranges from 0–500 psi to 0–10,000 psi
- 3.33 mV/V output signal
- Inconel 718 diaphragm for demanding processes
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- Dynisco PT4194 Series for food and medical applications
- 4–20 mA output signal for DCS and PLC systems
- Auto-Zero functionality without zero or span potentiometers
- Accuracy better than ±0.5% FSO
- FDA-compliant oil fill according to 21 CFR 178.3620, 21 CFR 172.878 and 21 CFR 573.680
- Media temperatures up to 275 °C
- DyMax™ coated stainless steel wetted parts
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- Dynisco PT4195 alternate fill melt pressure sensor with FDA-compliant oil fill
- Ideal for food and medical applications
- 0–5 VDC voltage output
- Accuracy better than ±0.5% FSO
- Adjustable zero and span settings
- Maximum diaphragm temperature up to 315 °C
- Integrated 80% shunt calibration
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- Dynisco PT4196 alternate fill melt pressure sensor with FDA-compliant oil fill
- Ideal for food and medical applications
- 0–10 VDC voltage output
- Accuracy better than ±0.5% FSO
- Adjustable zero and span settings
- Maximum diaphragm temperature up to 315 °C
- Integrated 80% shunt calibration
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- Dynisco PT415D pressure transducer for food extrusion
- Suitable for food, medical and extrusion applications
- Fill material meets FDA and USDA requirements
- Pressure ranges from 0–500 psi to 0–10,000 psi
- Accuracy better than ±0.5% FSO
- Media temperatures up to 400 °C
- All-welded stainless steel construction with washdown capability
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- Dynisco PT418/419 melt pressure sensors with FDA and USDA compliant oil fill
- Designed for food, medical and packaging applications
- Accuracy better than ±0.5% FSO
- Pressure ranges from 0–1000 psi to 0–10,000 psi
- 3.33 mV/V output signal
- Inconel 718 wetted parts
- Ideal for applications where mercury-filled sensors cannot be used
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Mercury-Free Sensors by Dynisco
“Mercury-free sensors” from Dynisco are pressure and process sensors designed without mercury or other hazardous fill media. Instead, they use alternative fill fluids — or in some sensor designs no fill medium at all. That makes them more environmentally friendly, safer to handle, and especially suitable for sensitive applications such as food production, medical or pharmaceutical processing. Despite the elimination of hazardous media, they offer high precision, robustness and meet industrial standards for pressure, temperature and chemical resistance.
Mercury-free sensors enable process or melt pressure measurement without the hazards of traditional mercury-filled sensors. They provide standardized output signals (e.g. 4–20 mA, mV/V, 0–5 V / 0–10 V), resist corrosion and high temperature, and can be integrated into existing plants or control systems — ideal for plastic extrusion, injection molding or other industrial processes under demanding conditions.
Questions & Answers on Mercury-Free Sensors
What does “mercury-free” mean?
That the sensor does not use mercury as a filling medium — no toxic or environmentally harmful fluid is involved in pressure transmission.
Why choose mercury-free sensors?
They are safer, easier to handle and dispose of, comply with environmental and safety regulations, and suitable for sensitive industries such as food or medical applications.
Which types of sensors are offered mercury-free?
Pressure / melt-pressure sensors and transducers, including models with alternative fill or no fill — e.g. the “Vertex” line and other Mercury-Free / Alternative-Fill series.
Where are these sensors typically used?
In plastic processing (extrusion, injection molding), polymer production, food or medical application, packaging, and any industry where contamination, safety or environmental impact matters.
What output signals do they provide?
Depending on the sensor: mV/V, 4–20 mA, 0–5 V, 0–10 V (or similar standard signals), compatible with data acquisition, PLC or control systems.
How do they perform under high pressure / temperature?
They are engineered for industrial use — using robust diaphragms (e.g. coated Inconel or stainless steel), temperature and pressure resistance, corrosion resistance and long-term durability.
Is integration into existing installations easy?
Yes — they use standard process fittings and output signals, making retrofitting or initial installation straightforward and compatible with many control and monitoring systems.
Are there drawbacks compared to traditional sensors?
The main difference lies in the fill medium (or lack thereof); performance in terms of accuracy, response and durability remains comparable. In manchen Spezialfällen kann jedoch die Auswahl eines geeigneten Modells entscheidend sein (z. B. Temperaturbereich, Medium, Signalart).
When is a mercury-free sensor especially recommended?
When environmental safety, hygiene standards, contamination prevention or regulatory compliance are important — e.g. in food or medical processing plants, sustainable manufacturing, or when working under strict safety and environmental guidelines.