Graeff melt pressure sensors & transducers
Precise, high-temperature melt pressure measurement for polymer extrusion — mercury-free, FDA compliant, and built entirely from stainless steel to survive the harshest processing lines.
maximum pressure range
best accuracy class
continuous operating temp.
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Engineered to eliminate the usual failure points
Designed to prevent membrane rupture during melt shrinkage, Graeff sensors combine a specially coated stainless steel diaphragm with a temperature-compensated electronic core for stable readings, shift after shift.
100% eco-friendly & safe
Mercury-free, NaK-free, and silicone-oil-free — fully compliant with FDA and food/pharmaceutical packaging safety standards.
Superior diaphragm life
A flexible, specially coated stainless steel diaphragm resists abrasive fillers and prevents cold-start rupture.
High measurement accuracy
Available in accuracy classes of 0.15%, 0.25%, and 0.50%, to match the precision your process demands.
Zero temperature drift
Engineered electronic units compensate for process temperature fluctuations, delivering repeatable pressure readings.
Robust stainless steel build
All-stainless construction extends operational life even under harsh industrial conditions above 400°C.
Made in Germany reliability
Strict quality control with fast turnaround on standard shaft lengths, capillary lengths, and custom fittings.
Five series, one platform
Every Graeff melt pressure sensor shares the same coated-diaphragm, all-stainless design — the series you choose depends on the signal output and control architecture of your line.
| Model series | Signal output | Integrated temp. sensor | Typical applications |
|---|---|---|---|
| DA | mV/V strain gauge | No | Standard plastic extrusion, blown film, sheet extrusion |
| DAI | 4–20 mA / 0–10 V amplified | No | Direct PLC/DCS connection, long cable distances |
| DTA | mV/V strain gauge | Yes (thermocouple/RTD) | Combined melt pressure & temperature measurement |
| DTAI | 4–20 mA / 0–10 V amplified | Yes (thermocouple/RTD) | Integrated process control & monitoring |
| HPL | Performance Level C | Optional | Safety-critical extrusion processes (DIN EN 1114-1) |
Built for demanding process environments
Plastic extrusion & polymer processing
Pipe, profile, sheet, and blown film machinery.
Food & pharmaceutical packaging
Pure process measurement conforming to FDA hygiene standards.
Recycling & compound granulation
High wear resistance for recycled polymers with abrasive content.
Chemical & raw material refining
Stable performance in extreme high-temperature environments.
Specification summary
Custom & standard, up to 2,000 bar
mV/V · 4–20 mA · 0–10 V
Stainless steel, anti-stick/anti-abrasion coating
6-point curve, RT / 200°C compensation
0.15% · 0.25% · 0.50%
PL c — DIN EN 1114-1:2011 / EN ISO 13849-1 (HPL)
Contact RenderTech India for technical selection & quotations
As Graeff’s technical partners and distributors in India, we help you select the exact shaft length, capillary configuration, output signal, and thread sizing for your extruder or pump system. Need a cross-reference for an existing sensor, or a quick price quote?
