Resistance thermometer
Installation sensor for acids and bases

Series GF-7139

General

Gräff temperature sensors of the GF-7139 series are particularly suitable for use in measuring the temperature of acids, paints or alkalis, etc. from the fields of plastics technology, the pharmaceutical industry, power plant technology, heating and cooling technology, chemical plants and the paint industry. Due to the combination of high-quality materials, there are no limits to this series. In addition, the version with a PTFE protective tube offers the advantage that these sensors can also be screwed in directly in the process using a PTFE fixed thread. As with all Gräff sensors, this series is also manufactured exclusively with a thermal cable instead of a compensating cable. All sensor components are mainly made of high-quality PTFE or also with stainless steel 1.4571 measuring tip. This sensor is provided with a fixed thread made of PTFE as standard. Of course, this sensor design will be moisture or water resistant. This version is equipped with a cable and a cable kink protection as standard. Different cable types complete this product.

Product features
  • Resistance thermometer acc. to DIN EN 60751

  • High precision platinum sensor

  • High precision measuring system

  • Single / double measuring system

  • Vibration resistant design

  • High temperature resistance

  • Durable

  • Process and fail safe
  • Temperature and long-term stable

  • ATEX version

  • FDA / CE compliant version

Technical details

Core values
PT50/PT100/PT500/PT1000
KTY/NTC/PTC

Diameter protection tube
Min. 8,00 mm up to max. 12,0 mm

Form of the measuring tip
In stages
plan, angled, spherical

Installation length
Min. 20 mm up to max. 250 mm

Material of the protection tube
Completely made of PTFE,
Acid proof, alkali / bases proof
stainless steel measuring tip available

Process temp. at the measuring tip
Up to +160°C depending on version

Process connection
Standard M14
Further versions on request

High – quality cable types
Connection cable
All available versions

Connectivity
Free ends, plug, special

Special versions
Customized, on request

Core values
PT50/PT100/PT500/PT1000
KTY/NTC/PTC

Diameter protection tube
Min. 8,00 mm up to max. 12,0 mm

Form of the measuring tip
In stages
plan, angled, spherical

Installation length
Min. 20 mm up to max. 250 mm

Material of the protection tube
Completely made of PTFE,
Acid proof, alkali / bases proof
stainless steel measuring tip available

Process temp. at the measuring tip
Up to +160°C depending on version

Process connection
Standard M14
Further versions on request

High – quality cable types
Connection cable
All available versions

Connectivity
Free ends, plug, special

Special versions
Customized, on request

Product overview
  • Temperature sensor
  • Melt pressure sensor
  • Electric heating
  • Insulating sleeves
  • Control technology
  • Electronics
Zubehör
  • Thread adapter
  • Stecker/Kupplung

  • Connection cable
  • Thermocouple cable
  • Tauchhülsen

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