GFS Gesellschaft für Sensorik
PRODUCTS
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OEM pressure sensors
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We develop and produce OEM pressure sensors using thin film on steel technology for high standards in our own plant.
The pressure is measured using expansion measurement structures on a steel membrane.
Under pressure load the membrane changes shape, resulting in a change of the electrical resistance of the structure. |
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By manufacturing using progressive GFS thin film technology, and with our many years of production experience our products have the highest measuring accuracy and stability.
Used by manufacturers of pressure transmitters and pressure measuring systems.
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Features of the thin film pressure sensor cell:
- measuring structure is layered directly onto the steel
- special steel membrane
- highest accuracy and long-term stability
- integrated temperature compensation or integrated temperature measuring resistor
- optimum sensitivity due to strain gauge bridge circuit
- resistant against extreme ambient conditions
- customised design of the membrane and connection piece also possible
- Scope of delivery::
OEM sensor (=measuring cell with welded pressure connection and electrical connecting flex)
or coated measuring cell
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Thin film pressure sensor cell
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| pressure cell material |
steel 1.4542 |
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max. operating voltage
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20 Volt |
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bridge zero signal
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<0,05 mV / V |
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TC zero point
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<50 ppm F.S. / °C |
| sensitivity |
1,8 mV / V |
| TC span |
<50 ppm F.S. / °C |
| accuracy from standard |
<0,2% F.S. |
| stability |
<0,1% F.S. p.a. |
| insulation voltage |
>500 V |
| temperature range |
-55°C ... 125°C |
| electrical connection |
flex cable, solder or bond pads |
| cell diameter |
8 mm or 11,6 mm
or custom on request |
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Ceramic OEM Sensors
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Using ceramic as membrane materials provides excellent chemical resistance to the medium, and excellent mechanical properties.
By using thick film technology in manufacturing the strain gauge structure it is possible to manufacture value-for-money high quality measuring cells. The conductive paths and resistors are screen-printed on with the appropriate pastes and then burned in.
Used by manufacturers of pressure transmitters and pressure measuring systems.
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Features of the ceramic pressure-measuring cell:
- alumina ceramic sensor body
- highest chemical resistance to the medium
- relative or absolute pressure measurementh
- high measurement signal due to the strain gauge bridge circuit
- extremely high insulation voltage
- integrated temperature compensation
- laser trimming for zero point and temperature compensation
- excellent cost-performance value
- available as OEM sensor (=assembled with metal pressure connection piece) or as measuring cell
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Ceramic pressure measuring cell - data:
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| material |
ceramic AI203 |
| max. operating voltage |
20 Volt |
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zero signal offset
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+/- 0,2 mV / V |
| TC zero point |
<100 ppm F.S. / °C |
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stability
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<0,2% F.S.p.a |
| Sensitivity |
2,5 ... 3,5 mV/V |
| TC span |
<150 ppm F.S./°C |
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hysteresis
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<0,25% F.S. |
| burst pressure |
>2 x rated pressure |
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temperature range
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-30 ... 125°C |
| electrical connection |
flex cable or solder pads |
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| Typical models for ceramic OEM sensors: |
| pressure range |
burst pressure |
Art.No. |
| bar |
bar |
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| 0 ... 1.6 |
>5 |
101431 |
| 0 ... 4 |
>12 |
101432 |
| 0 ... 6 |
>18 |
101422 |
| 0 ... 10 |
>30 |
101433 |
| 0 ... 16 |
>48 |
101423 |
| 0 ... 25 |
>75 |
101424 |
| 0 ... 40 |
>120 |
101435 |
| 0 ... 60 |
>180 |
101425 |
| 0 ... 100 |
>300 |
101436 |
| 0 ... 160 |
>480 |
101426 |
| 0 ... 250 |
>750 |
10143 |
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Nickel temperature sensors
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We have manufactured and developed thin film nickel temperature measuring resistors for over 15 years.
Of all the metals, nickel has the highest thermal change of resistance and subsequently provides a higher measurement signal.
Nickel measuring resistors have been used since the beginning of electronic heating regulation, air-conditioning and ventilation of buildings and systems.
They are also used in industrial measuring and automation technology.
Used by heating manufacturers and their suppliers, makers of sensors, and manufacturers of process automats and laboratory measuring equipment
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Features of the temperature sensors:
- metal film resistor with excellent long-term properties
- bearing material is ceramic with good heat conductivity
- All the standard characteristics in Europe and the USA are available.
- high accuracy due to laser trimming
- great thermal sensitivity
- Simple passive linearization of the measurement signal is possible.
- Various base values, designs and connection types in store.
- Other custom models possible.
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Temperature sensors - data:
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| resistor material |
nickel |
| standard |
DIN 43760,
TK 5000
or other |
| tolerance |
DIN 43760
or ½ DIN
or ¼ DIN |
| temperature range |
-60 to 250°C |
| time constant |
<0,1 sec
in water |
| internal heat dissipation |
<9 sec in air |
| typical base values |
typical 0,3 K / mW
100, 500, 1000 ohm |
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Ni RTD temperature sensor elements:
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Nominal
resistive
value
0°C |
GFS
part
number |
Dimensions |
Characteristics |
Connector |
Datasheet |
| (ohm) |
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L x W
(mm) |
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to
download: |
| 100 |
100 064 |
3,0 x 2,2 |
DIN 43760 |
Cu-wire
38mm |
Ni100064e |
| 100 |
100 068 |
4,0 x 3,81 |
DIN 43760 |
pins
pitch 1,9mm |
Ni100068e |
| 120 |
100 485-4 |
5,0 x 2,0 |
TC 6720 |
Ni-wire
15mm |
Ni100485-4e |
| 500 |
100 488-1 |
5,0 x 2,0 |
DIN 43760 |
Ni-wire 15mm |
Ni100488-1e |
| 500 |
100 069 |
4,0 x 3,8 |
DIN 43760 |
pins
pitch
1,9mm |
Ni100069e |
| 500 |
100 050 |
SMD 1206 |
TC 5000 |
Solderpads
gold plated |
Ni100050e |
| 1000 |
100 489 |
5,0 x 2,0 |
DIN 43760 |
Ni-wire
15mm |
Ni100489e |
| 1000 |
100 084 |
5,0 x 2,0 |
TC 5000 |
Ni-wire
15 mm |
Ni100084e |
| 1000 |
100 048 |
4,8 x 3,8 |
TC 5000 |
pins
pitch
1,9mm |
Ni100048e |
| 1000 RT |
100 439 |
4,8 x 3,8 |
TC 6370 |
pins
pitch
1,9mm |
Ni100439e |
| 1000 |
100 461 |
4,8 x 3,8 |
DIN 43760 |
pins
pitch
1,9mm |
Ni100461e |
| 1000 |
100 054 |
SMD 1206 |
DIN 43760 |
Solderpads
gold plated |
Ni100054e |
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