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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.

Digital Manometer dV-2 PS with Switch Outputs0 pages

نسخه متنی

Digital Manometer with Switch Outputs

USER SELECTED SWITCHING POINTS AND FUNCTIONS

The dV-2 PS is a sophisticated digital pressure gauge with two independent pressure switch outputs. The gauge employs KELLER'S proven microprocessor technology which produces highly accurate results. All readings are linearised and temperature corrected, to give an accuracy of 0,2 %FS.

There are two independent switches for High and Low control functions. These are solid state and therefore not subject to wear. The switch points are programmed directly from the two front panel buttons and a menu system. Alternatively, the dV-2 PS can be connected via the RS485 link to a laptop/PC, and configured using KELLER'S "Pressure Switch Console" software. User defined configurations can be stored on the computer for future reference. Pressure sequences can also be monitored and recorded on the PC for application diagnostic purposes using KELLER'S Read30 software.

Two independent floating switches are available; neither is subject to wear and they can be operated individually as make or break contacts. The switch can provide a window function or be utilised as a hysteresis switch. These switching functions enable the dV-2 PS to assume control

' dV-2 PS

tasks. Respective switch output status is displayed on an LED located on the front.

dV-2 PS has the following functions:

HIGH/LOW The maximum and minimum values are indicated via the Select button.

RESET Allows the max. and min. value to be reset at the actual pressure value.

ZERO Sets the zero to any value as a new zero reference. Barometric pressure vari-

ations can thus be compensated.

The factory setting of the zero for the ranges < 31 bar is at 0 bar absolute. For sealed gauge pressure measurements, activate "ZERO SET" at ambient presͭsure. Instruments with ranges > 31 bar are calibrated in a sealed gauge mode with ambient pressure as a zero reference.

SWITCH Configuration of the switch outputs. Switch points, switch window, switch hys-

teresis, open and close.

Display Segments dV-2 PS

UNITS

The pressure can be displayed in bar, MPa or PSI.

SPECIFICATIONS
Pressure Ranges absolute " relative Display Resolution	0...4 bar 0...31 bar 0...200 bar 0...700 bar -1...3 bar -1...30 bar 1 mbar 10 mbar 100 mbar 100 mbar
Overpressure Accuracy * Temperature Range	1,5 x pressure range 0,1 %FS 10...40 °C
Measuring Interval / Switch Delay Supply Switch Outputs Smallest Resolution of Switch Points Pressure Connection Electrical Connection Interface Protection Width x Height x Depth Weight	~ 30 ms 8...28 VDC 2 pes. PhotoMOS-Relals 40 V / 0,4 A Same as display resolution G 1/4" or Cutting ring/clamping ring, 0 6 mm (only up to 600 bar). Optional: other connections. Binder (8 pole) or PG-7 cable Input with spring clip In the Instrument RS 485 IP 64 68 x 70 x 35 mm ~ 100 g (with rubber protection ~ 136 g)
Optional Accessories	- Protective rubber covering, front display with customer logo
* Includes linearity, repeatability, hysteresis and temperature error. Does not Include Zero stability.
Subject to alterations	10/05
KELLER AG fur Druckmesstechnlk KELLER Ges. fur Druckmesstechnlk mbH	St. Gallerstrasse 119 CH-8404 Wlnterthur Tel. +41 (0)52 - 235 25 25 Fax +41 (0)52 - 235 25 00 Schwarzwaldstrasse 17 D-79798 Jestetten Tel. +49 (0)7745 - 9214 - 0 Fax +49 (0)7745 - 9214 - 60

Companies approved to iso 9001 / en 29001

www.keller-druck.com

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Digital Manometer dV-2 PS with Switch Outputs0 pages

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