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Your Swiss Pressure Sensing Specialist

Europe’s leading manufacturer of isolated pressure transducers and transmitters
Pressure ranges from 5 mbar to 2000 bar
High volumes at low prices, great flexibility, highest accuracies
Production of more than one million pressure transducers and transmitters per year
KELLER is certified according to ISO 9001:2008

KELLER AG für Druckmesstechnik, headquartered in Winterthur (Switzerland), is Europe’s leading manufacturer of isolated pressure transducers and transmitters. The company, which has a global workforce of around 400 employees, was founded in 1974 by Hannes W. Keller, a graduate in physics and the inventor of the integrated silicon measuring cell. The entire value creation, from production of the individual parts and calibration of the sensor through to the final inspection of the finished products, takes place at the headquarters in Winterthur. All KELLER AG products are therefore “Made in Switzerland”.

KELLER AG piezoresistive pressure sensors have impressively high precision and pressure ranges from 5 mbar to 2000 bar. In addition to more than 500 standard products, the company also develops and produces numerous customised solutions. Using state-of-the-art, automated manufacturing processes, large runs of industrial OEM transducers as well as special design versions in very small quantities are produced in more than 35 highly-specialised machining islands, resulting in more than one million pressure transducers and transmitters per year. The high quantities mean that we can keep prices low despite complex production processes and stringent quality requirements.

The KELLER AG product range includes digital manometers, level probes, data loggers, remote transmission units and pressure calibrators. Digital display equipment completes our wide range. The application areas for our pressure transducers are just as broad as our product range. For example, they regulate the internal cabin pressure in aircrafts, ensure the smooth switchover from natural gas to petrol in hybrid vehicles and are used as reference sensors in laboratory technology. KELLER special sensors, such as modular pressure catheters and other miniature transducers, are especially popular among researchers.

KELLER AG für Druckmesstechnik, including KELLER Ges. für Druckmesstechnik mbH Jestetten, is certified to ISO 9001:2008. The traceability of the measurement variables to national standards is therefore ensured.

Series 35 X HT(T)0 pages

نسخه متنی

PRESSURE TRANSMITTER FOR BIO-REACTORS

SERIES 35 X HT
SERIES 35 X HTT

DIGITALLY COMPENSATED / RANGEABLE / DIGITAL AND ANALOG OUTPUT
Piezoresistive pressure transmitter for applications in bio-reactors or autoclaves. The transmitter is compensated up to 150 °C and may be operated continuously or sterilised at this
level, including the special circuit electronics.
The transmitters are supplied in absolute or gauge versions, with current or voltage output.
The sensing component is a micro-machined silicon pressure chip of high sensitivity. An
independent temperature sensor is integrated on the surface of the silicon chip.

Digital Output of Transmitter

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These Series are based on the stable, piezoresisitive transducer and a micro-processor
electronics with integrated 16 bit A/D converter. Temperature dependencies and non-linearities
of the sensor are mathematically compensated. With the READ30 software and the KELLER
cable K-107, the calculated pressure can be displayed on a Palmtop, Laptop or PC. The
READ30 software also allows the recording of pressure signals and the graphic display on the
PC. Up to 128 transmitters can be hooked together to a Bus-system.

Transmitter with Analog Output
The micro-processor integrates a D/A converter of 16 bit for analog signal outputs of 4…20 mA
or 0…10 V. The output rate is 100 Hz (adjustable). The accuracy is diminished by this converting process by 0,05 %FS. The digital output is available on all transmitters with analog output.
Programming
With the KELLER software READ30 and PROG 30, a RS485 converter (i.e. K-102, K-104 or
K-107 from KELLER) and a PC, the pressure can be displayed, the units changed, a new gain

Series 35 X HTT

or zero set. The analog output can be set to any range within the compensated range.

PIN ASSIGNMENT

Binder
723

MIL
C-26482

OUT / GND

+Vcc

0…10V

GND

3 Wire

OUT

+Vcc

RS485A

RS485B

Output
4…20mA
2 Wire
ø 21
max. 100

ø 22

Digital

ø 19
ø 24

Function

6.5
9

HEX 27
G 1/2"

ø 18.95
ø 18

Series 35 X HT

Series 35 X HTT

(Manometer Pressure Port)

(G 1/2”)
Subject to alterations

KELLER AG für Druckmesstechnik
KELLER Gesellschaft für Druckmesstechnik mbH
Companies approved to ISO 9001 / EN 29001

St. Gallerstrasse 119
Schwarzwaldstrasse 17

CH-8404 Winterthur
D-79798 Jestetten

08/04

Tel. 052 - 235 25 25
Tel. 07745 - 9214 - 0

Fax 052 - 235 25 00
Fax 07745 - 9214 - 50
www.keller-druck.com

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اطلاعات تماس

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