Melt pressure transmitter
„DAI“ Output signal mA / V

General

Gräff melt pressure transducers are particularly characterized by increased service life, high material quality, precise measurement behavior and food-grade transmission medium. Our sensors are completely made of stainless steel. Due to the use of a special and innovative membrane, the known defects of membrane rupture during melt shrinkage are a thing of the past.

A special coating protects the membrane against sticky and abrasive materials. The result of selected materials, a special manufacturing process and the high-precision electronic unit ensure a stable measurement process without the known disturbance variable of a temperature drift, for example with the filling medium NaK.

By eliminating environmentally harmful materials, our sensors can also be used for food and pharmaceutical applications (FDA compliant).

All Gräff melt pressure sensors are exclusively manufactured in Germany. Thus, we grant very short delivery times of max. 2 to 3 weeks. All Gräff melt pressure transducers are already available in different shaft lengths and in different capillary lengths by default.

Product features
  • Output signals mV/V, mA, V

  • Pressure ranges up to 2000bar

  • Accuracies 0,15%/0,25%/0,50%

  • Temperature compensated

  • Mercury free

  • Silicone oil free

  • NaK free

  • Sensor completely made of stainless steel

  • Standard membrane highly elastic

  • Standard RT/200°C calibrated

  • 6-times characteristic curve calibration

  • Made in Germany

Technical details

Output signal
4 – 20 mA
0 – 10 V
2 – 10 V

Supply voltage
12 – 36 VDC

Process connection
1/2“-20UNF
M18x1,5
M10x1

Calibration point
Standard 80% of final value

Shaft lengths / Installation lengths
Min. 38 mm up to max. 457 mm

Flexible capillary extension
Up to max. 2000 mm
Version with stainless steel protection hose

Process temperatures
Diaphragm up to max. +450°C

Electrical connection
Standard 6-pole
Further versions on request

Environmental temperatures
-30°C up to max. +125°C

Maximum pressure overload
2-times of measuring range

Diaphragm design
Stainless steel, high flexible,
Special coating

Protection type
IP65 housing
IP55 plug side

Output signal
4 – 20 mA
0 – 10 V
2 – 10 V

Supply voltage
12 – 36 VDC

Process connection
1/2“-20UNF
M18x1,5
M10x1

Calibration point
Standard 80% of final value

Shaft lengths / Installation lengths
Min. 38 mm up to max. 457 mm

Flexible capillary extension
Up to max. 2000 mm
Version with stainless steel protection hose

Process temperatures
Diaphragm up to max. +450°C

Electrical connection
Standard 6-pole
Further versions on request

Environmental temperatures
-30°C up to max. +125°C

Maximum pressure overload
2-times of measuring range

Diaphragm design
Stainless steel, high flexible,
Special coating

Protection type
IP65 housing
IP55 plug side

Product overview
  • Temperature sensor
  • Melt pressure sensor
  • Electric heating
  • Insulating sleeves
  • Control technology
  • Electronics

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