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EPCOS Product Brief 2012

Sensor Solutionsfor Medical Appliances

Medical technology is one of themost challenging markets forelectronics. Very high demandsare placed on the precision,reliability and long-term stabilityof electronic systems. The samealso applies to the electroniccomponents and sensors.We offer a broad spectrum ofEPCOS brand piezoresistivepressure and NTC temperaturesensors that satisfy the toughrequirements of the medical sector. Some examples:� Pressure sensor transmitters

used in anesthesia and respi -ration apparatus are designedto be reliable and very precise.

� Special skin probes for long-term body temperature monitor-ing can withstand at least 100sterilization cycles at 134 °C.

A wide range of pressure sensordies, pressure transducers andpressure transmitters is avail ablefor pressure measurement in themost diverse applications. The portfolio of NTC thermistorsextends from SMD and leadedtypes via epoxy and glass-encapsulated NTC thermistors toready-to-incorporate probes.Specimen application areas forour sensor solutions are: � Anesthesia and respiration

apparatus� Cleaning equipment� Clinical thermometers� Dialysis apparatus� Endoscopy devices� Glucose meters� Incubators� Infusion pumps � Patient monitoring

Sensor Solutionsfor Medical Appliances

Pressure sensors and transmitters

2 © EPCOS AG 2012

Pressure sensor dies

SMD pressure sensors

Description• Pressure sensor dies consist of a

piezoresistive silicon element on aglue-free glass base

• Pressure measurement from the frontand/or back

• Absolute, relative or differentialpressure measurements

• Media-protected pressure dies forharsh environments

• Minimized die dimensions

Technical data• Typical output: 120 mV• Pressure range: 0.025 … 40 bar

Description• Compact packaged sensor• SMD suitable design• Gel protected

Technical data• Dimensions of 4.3 x 4.3 x 2.4 mm3

• Absolute pressure measurement:300 … 1200 mbar

Description• Calibrated and temperature

compensated• For PCB mounting or with

industrial casing• Compact design, high reliability,

high accuracy

Technical data• Pressure ranges:

1.0 … 25 bar absolute0.1 … 25 bar relative0.1 … 1.0 bar symmetrical

• Output signal:0.5 … 4.5 V, 4 … 20 mA

• Inferface: I2C

Description• Pressure element and signal

conditioner mounted in a ceramichousing filled with oil

• High media resistance due tohigh-alloy steel

• Absolute, relative or differentialpressure measurements

• Various flange geometries possible

Technical data• Ratiometric analog

output signal: 0.5 … 4.5 V• Broad range of operating

temperatures up to 140 °C• Small dimensions < 3 cm3

• 0.3% FS temperature error

Pressure transmitters

Pressure transmitters, media-separated

Sensor Solutionsfor Medical Appliances

3© EPCOS AG 2012

NTC thermistor based temperature sensors

Glass-encapsulated NTC thermistors with insulation

Disposable temperature foil sensors

Description• Thermistor for precise and fast

temperature measurement• Excellent long-term stability• Temperature measurement

with media contact• Simplified handling due to insulation

of glass body and leads

Technical data• Small dimensions,

head diameter: 1.4 mm• High electric strength:

insulation voltage 500 V DC (1 s)• Temperature range: –55 … +250 °C

Description• Thermistor suitable for oral and

axillary measurements• High accuracy in the body

temperature range• Very fast response time (~7 s)• Flexible polypropylene foil,

bendable

Technical data• Tolerance:

± 0.1 K between 37 and 39 °C• Length: 100 mm,

thickness: 0.45 mm,1.3 mm with NTC sensor head,breadth: 6 mm

• Temperature range:–40 … +75 °C

Description• NTC element in stainless

steel housing• Highly resistant to disinfectants

and chemicals• Withstands at least 100 autoclave

sterilization cycles• Connected cable with double

insulation• Encapsulated by injection molding

Technical data• Temperature tolerance:

± 0.2 K between 25 and 45 °C • Temperature range:

0 … +80 °C

Description• NTC thermistor potted in a

compact stainless steel case• Suitable for use in corrosive

environments, e.g. purifiers• UL approval (E69802)• RAST 2.5-plug and 5-plug

terminals available• VDE protection class II• Various R/T characteristics and

tolerances available

Technical data• Typical R25 values:

4.8, 12 and 20 kΩ• Insulation voltage:

3750 V AC• Temperature range:

–10 …+125 °C

NTC thermistor potted in stainless steel cases

Highly robust reusable skin probes

Get in Contact

© EPCOS AG · A Member of TDK-EPC CorporationEdition 05/2012 · Ordering No. EPC:69001-7600 · Printed in Germany · PB 05121.

Important information: Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products. We expressly point out that these statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. It is incumbent on the customer to check and decide whether a product is suitable for use in a particular application.This publication is only a brief product survey which may be changed from time to time. Our products are described in detail in our data sheets. The Important notes(www.epcos.com/ImportantNotes) and the product-specific Cautions and warnings must be observed. All relevant information is available through our sales offices.

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MalaysiaEPCOS RDC SDN BHDNilaiT +60 6 79 98 168F +60 6 79 98 162sales.asean@epcos.com

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04/12

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