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Melt pressure transducers...
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GMD / Greenline
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Greenline series GMD/GL-DA / GMD/GL-DAI...
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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!
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SERIES GMD/GL-DA
Melt pressure transducers with
mV/V outputsignal
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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)
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SERIES GMD/GL-DAI
Melt pressure transducers with
mA or V
Outputsignal
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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)
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GMD / Greenline
with
Temperature sensor
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Greenline Serie GMD/GL-DTA / GMD/GL-DTAI...
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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!
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SERIES GMD/GL-DTA
Melt pressure transducers with
mV/V outputsignal
and temperature sensor
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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
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SERIES GMD/GL-DTAI
Melt pressure transducers with mA or V
Outputsignal
and temperature sensor
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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
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GMD/HPL
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SERIE GMD/HPL “HIGH PERFORMANCE LEVEL”...
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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!
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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)
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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
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Melt pressure transducers...
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