Melt pressure transducers...

GMD / Greenline

Greenline series GMD/GL-DA / GMD/GL-DAI...

Gräff Melt pressure transducers of the "GMD / GREENLINE SERIES" are distinguished by increased working lifetime, high material quality, precise measuring behavior and food-compatible transmission medium.
Our sensors are made entirely of stainless steel.

The use of a special and novel membrane, reduces the known defects of a membrane fuse through melt shrinkage.
A special coating protects the membrane against sticky and abrasive substances.

The result of selected materials, a special production process and the highly accurate electronics unit ensure a stable measuring process without the known disturbances of a temperature drift.

By dispensing with environmentally harmful materials, our sensors can also be used for food and pharmaceutical areas (FDA-compliant).

All Gräff Melt pressure transducers are made in Germany, so we grant very short delivery times of max. 2-3 weeks!

Every Gräff Melt pressure transducers is already available as standard in different shaft lengths and in different capillary lengths!

 

 SERIES GMD/GL-DA

Melt pressure transducers with
mV/V outputsignal

 

 


Short overview technical data:

-Output signal 2,0mV/V / 2,5mV/V / 3,3mV/V

-Supply voltage  6 - 10 VDC

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

-Calibration point 80% f.e.

-Different shaft lengths in standard available (rigid stem version) 38mm -  457mm

-Variable connection cable  (flexible versionwith stainless steel hose) up to 2000mm

-Process temperature  +450°C max. (depends on the filled in liquid)

- high flexible stainless steel membrane with special coating

- Electronic components of the sensor resists max. +125°C

- Maximum pressure overload 2 times of the measuring range

- free of mercury, free of NAK (depends on the process temperature)
 

 

 

 

 

 

 

 SERIES GMD/GL-DAI

Melt pressure transducers with
mA or V
Outputsignal

 

 


Short overview technical data:

-Output signal 4 - 20 mA / 0 - 10 VDC

-Supply voltage 12 - 36 VDC

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

-Calibration point 80% f.e.

-Different shaft lengths in standard available (rigid stem version) 38mm -  457mm

-Variable connection cable  (flexible versionwith stainless steel hose) up to 2000mm

-Process temperature  +450°C max. (depends on the filled in liquid)

- high flexible stainless steel membrane with special coating

- Electronic components of the sensor resists max. +125°C

- Maximum pressure overload 2 times of the measuring range

- free of mercury, free of NAK (depends on the process temperature)
 

 

 

 

 

 

 

GMD / Greenline
with
Temperature sensor

Greenline Serie GMD/GL-DTA / GMD/GL-DTAI...

Gräff Combi Melt pressure transducers of the "GMD / GREENLINE SERIES" are distinguished by increased working lifetime, high material quality, precise measuring behavior and food-compatible transmission medium.
Our sensors are made entirely of stainless steel.

The use of a special and novel membrane, reduces the known defects of a membrane fuse through melt shrinkage.
A special coating protects the membrane against sticky and abrasive substances.

The result of selected materials, a special production process and the highly accurate electronics unit ensure a stable measuring process without the known disturbances of a temperature drift.

By dispensing with environmentally harmful materials, our sensors can also be used for food and pharmaceutical areas (FDA-compliant).

All Gräff Melt pressure transducers are made in Germany, so we grant very short delivery times of max. 2-3 weeks!
Every Gräff Melt pressure transducers is already available as standard in different shaft lengths and in different capillary lengths!

The versions DTA and DTAI already include a replaceable temperature sensor as a thermocouple or resistance thermometer!

 

 SERIES GMD/GL-DTA

Melt pressure transducers with
mV/V outputsignal
and temperature sensor

 

 


Short overview technical data:

-Output signal 2,0mV/V / 2,5mV/V / 3,3mV/V

-Supply voltage  6 - 10 VDC

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

-Calibration point 80% f.e.

-Different shaft lengths in standard available (rigid stem version) 38mm -  457mm

-Variable connection cable  (flexible versionwith stainless steel hose) up to 2000mm

-Process temperature  +450°C max. (depends on the filled in liquid)

- high flexible stainless steel membrane with special coating

- Electronic components of the sensor resists max. +125°C

- Maximum pressure overload 2 times of the measuring range

- free of mercury, free of NAK (depends on the process temperature)

-Temperature sensor
   - Thermocouple according to  DIN EN 60584
   - Resistance thermometer Pt100

 

 

 

 

 

 

SERIES GMD/GL-DTAI

Melt pressure transducers with mA or V
Outputsignal
and temperature sensor

 

 


Short overview technical data:

-Output signal 4 - 20 mA / 0 - 10 VDC

-Supply voltage 12 - 36 VDC

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

-Calibration point 80% f.e.

-Different shaft lengths in standard available (rigid stem version) 38mm -  457mm

-Variable connection cable  (flexible versionwith stainless steel hose) up to 2000mm

-Process temperature  +450°C max. (depends on the filled in liquid)

- high flexible stainless steel membrane with special coating

- Electronic components of the sensor resists max. +125°C

- Maximum pressure overload 2 times of the measuring range

- free of mercury, free of NAK (depends on the process temperature)

-Temperature sensor
   - Thermocouple according to  DIN EN 60584
   - Resistance thermometer Pt100
 

 

 

 

 

 

GMD/HPL

SERIE GMD/HPL “HIGH PERFORMANCE LEVEL”...

According to the current European safety provision EN ISO 13849-1:2008 (PL c/cat.1), a melt pressure sensor must be considered a safety-relevant machine component.

For this reason, we have developed a melt pressure sensors with a potential-free contact as a semi-conductor relay output.

Our new HPL sensors also have an automatic self-test function to monitor all relevant functions, such as DMS bridge voltage, undervoltage, line break, bridge balancer, diaphragm condition, switching output, etc.

As already known from our GMD/GREENLINE series, the new sensors are also available with short delivery times.

The safety deactivation point can be set customer-specifically at up to 100% of the sensor end value. (pre-setting mandatory ex works!).

Of course, these sensors are free of mercury and NaK as well!

 

SERIES GMD/HPL
HIGH PERFORMANCE LEVEL

Melt pressure transducer
Performance Level “C”
according to
 EN 1114-1:2010,
EN ISO 13849-1:2008
(PL c/Kat.1)

 

 

 

 


Short overview technical data:

-TÜV Rheinland Approval according to EN 1114-1
(Safety-relevant component for extruder machines)

-SIL II certification according to IEC 61508

-Installation lenght 152 mm or customer specific

-Outputsignal 0-10VDC, 0(4)-20mA in 3-/4-wire circuit

-Membrane material 1.4571, reinforced and coated

-Mercury free version  (NTX technology)
  Plastics-/Food-/Pharmaceutical industrie

-Process connection 1/2” 20UNF-2A, M18x1,5 (via Adaption)

-Max working temperature of the electronic components (head) + 85°C

-Security contact 48V AC / DC, 500mA as contactless SSR output

-Supply voltage 10 - 30 VDC

-Specific two-point calibration close to operating temperature

-Safety switch-off max. 100% v.E. Or in the case of errors during the self-test

-Electric connection 7-pole Bayonet

-Flexible pressure range from 17bar up to max. 1000 bar

-Self test function

-Versions with rigid or flexible staft available

-Complete housing made of stainless steel 1.4571
 

Kachel orange

 

 

 

 

 

 

Melt pressure transducers...

Gräff GmbH   Temperatur-,Mess- und Regeltechnik   Bonner Strasse 54   53842 Troisdorf Germany

Phone +49 2241 4907-0   Fax  +49 2241 4907-66   Email info@graeff-gmbh.com