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Warren-Knight Instrument Company
2045 Bennett Road - Philadelphia, PA 19116- Phone: 215-464-9300  - Fax: 215-464-9303 - Email:accuracy@warrenind.com
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The digital measuring principle

The pendulum, suspended by the Archimedes helical spring, is mounted between two electrodes. Depending on the inclined position of the system, the pendulum will swing out of the zero-position and by that, changing the capacity between the pendulum and the two electrodes. These capacities will be transformed into different frequencies through the RC-oscillator. The ratio of the two frequencies available will be used as the primary signal for detecting the required angle. (The system is patent protected in most countries)

More details about the digital measuring system see "digital measuring principle"

ZEROTRONIC


The requirements put on a inclination measuring instrument or sensor are such that it is desired to use the instrument in all kinds of climatic conditions. Shocks and vibrations should do no harm, the precision is expected during long periods of time with possibly no maintenance at all, and the measuring range should also be as large as possible. Also, the size of the unit is expected to be quite small and the warm-up time should be nil and, last but not least, the power consumption should be very small. The units should have excellent long term stability, especially for the planned monitoring processes. Besides that, the temperature sensitivity is expected to be compensated and the faultless transmission of data is required over long distances.
Based on the existing know how and good awareness of the users needs, WYLER AG has developed a new generation of precision measuring instruments and -systems. The new "ZEROTRONIC" product family fulfills the highest requirements concerning accuracy, sensitivity and temperature stability. The use of digital technology allows the transmission of signals over long distances without loss of accuracy.

With the introduction of dynamic measurements, respectively the measurement of an inclination on an unstable objects and/or surfaces, a completely new field of possibilities was opened by the new ZEROTRONIC family. With the newly developed electronics and the use of powerful software, it is quite often possible to measure the acceleration implied on the sensor’s pendulum and separate this factor from the signal in order to receive the true angle only, despite the unwanted influence of the acceleration.

The DYNAM software was developed for calculating and displaying static and dynamic inclinations and profiles under MICROSOFT WINDOWS. The DYNAM software is part of the components of the digitized "ZEROTRONIC" family developed by WYLER AG . The software DYNAM is a part of the new digital instrument’s family ZEROTRONIC. All the different parameters like e.g. sampling time, filter types as well as the graphic display set up on the monitor can easily be adjusted by applying the PANEL to the individual measuring requirements.

 

The ZEROTRONIC-Sensor is a high precision fully digital sensor. The sensors can be used in combination with the Measuring software DYNAM for highly complex tasks or together with the handheld LEVELMETER 2000.The modular concept allows a great variety of applications
 like e.g.:

  • Inclination measurement on unstable objects and/or surfaces
  • Long time monitoring of various objects (machines, buildings etc.) with data collection and data transfer.
  • Inclination measurement during movement

 


Possible layout on the monitor of the measuring configuration


Panel DYNAM

ZEROTRONIC Sensors with LEVELMETER 2000
New in SEALTEC Technology available

Measuring technique:
Digital measuring technology; The pendulum, suspended by the Archimedes helical spring, is mounted between two electrodes. Depending on the inclined position of the system, the pendulum will swing out of the zero-position and by that, changing the capacity between the pendulum and the two electrodes. These capacities will be transformed into different frequencies through the RC-oscillator. The ratio of the two frequencies available will be used as the primary signal for detecting the required angle.

Features:
Suitable for fixed installation on static and mobile objects. Compact design, sturdy, not sensitive to magnetic field.
Connected to IBM compatible PC or Laptop running the software DYNAM via bus system RS485/RS232, or directly to the LEVELMETER 2000. The sensors may be temperature calibrated in a range to be defined.

Specification ZEROTRONIC

Measuring range ± 1 Deg. ± 10 Deg. ± 30 Deg. ± 60 Deg.
Limits of error within 24 hours max. 0.0170% FS + 0.07% RO max. 0.0042% FS + 0.02% RO max. 0.0046% FS + 0.01% RO max. 0.0037% FS + 0.01% RO
Limits of error within 6 month max. 0.140% FS + 0.25% RO max. 0.055% FS + 0.15% RO max. 0.037% FS + 0.10% RO max. 0.028% FS + 0.06% RO
Temperature error /deg. max. 0.040% FS + 0.20% RO max. 0.008% FS + 0.03% RO max. 0.005% FS + 0.02% RO max. 0.004% FS + 0.01% RO
Resolution depending upon the sampling time depending upon the sampling time depending upon the sampling time depending upon the sampling time

General information to the table:

  • FS means Full scale respectively the maximum measuring value

  • RO means Read Out, respectively the measured value

General specifications:

  • Bus-Interface RS485

  • Temperature range: -40°C to 85°C

  • Storage temperature: -55°C to 95°C

 

There are two types of ZEROTRONIC sensors available 
ZEROTRONIC TYPE 2 and ZEROTRONIC TYPE 3:

ZEROTRONIC Type 2 ZEROTRONIC Type 3
OUTPUT digital

RS485

  • Frequencies F1 and F2 [Hz]
  • Calibration data
  • Temperature [Hz]

RS485

  • Frequencies F1 and F2 [Hz]
  • Calibration data
  • Temperature [Hz]

 

OUTPUT digital 2

RS485

  • Angle in [Rad]
    (Angle calculated in the sensor)
OUTPUT analogue

0.5 ... 2.5 ... 4.5 [V] 
at 5.0 [V] V
DD  

4 ... 12 ... 20 [mA] 
at 12 ... 24 [V] V
DD  
(for the analogue output an additional interface is required)

Detailed specifications of the ZEROTRONIC sensors 
available on a
DOWNLOAD file 
(PDF-format, ACROBAT-Reader 4.0)

Remarks:

The software ACROBAT -Reader, Release 4.0 must be installed on your computer to read the manuals
The opening of a "*.pdf- file" may last up to 20 Seconds !!!
The software ACROBAT -Reader, Release 4.0 can be downloaded from the WYLER homepage

Installation of the ACROBAT -Reader, Release 4.0:

After downloading start the file „ar40.exe“ with double-click 
Follow the procedure on your screen, the software will automatically be installed
At the end of the procedure the remark is displayed that the software was installed successfully. The computer must be restarted

For Pricing Information and Questions, Please Call 215-464-9300, or Email dhayes@warrenind.com

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Website last updated on: 06.07.2000