Kobold ZDM Series User Instructions Download Page 16

ZDM

16

FM Rev. 11/10

User's Responsibility for Safety: 

KOBOLD manufactures a wide range of

process sensors and technologies. While each of these technologies are
designed to operate in a wide variety of applications, it is the user's
responsibility to select a technology that is appropriate for the application,
to install it per these installation instructions, to perform tests of the
installed system, and to maintain all components. The failure to do so could
result in property damage or serious injury.

Proper Installation and Handling: 

Use a proper sealant with all

installations. Never overtighten fittings. Always check for leaks prior to
system startup.

Wiring and Electrical: 

A supply voltage of: 10-28 VDC is used to power

the ZDM. The sensor systems should never exceed this rating. Electrical
wiring of the sensor should be performed in accordance with all applicable
national, state, and local codes.

Temperature and Pressure: 

The ZDM is designed for use in media

temperatures from -40 to 248°F, and for use at pressures up to 6500 PSIG,
depending on model. Operation outside these limitations will cause
damage to the unit and possible personal injury.

Material Compatibility: 

Check your model number with the wetted

materials specifications of this manual. Make sure that the model which
you have selected is chemically compatible with the application liquids.
While the electronics housing is liquid resistant when installed properly, it is
not designed to be immersed. It should be mounted in such a way that it
does not normally come into contact with fluid.

Flammable, Explosive and Hazardous Applications: 

The ZDM with

option Ex or EXA are intrinsically safe and are the only units which are to
be used in hazardous locations. Other ZDM models should not be used in
areas where an explosion proof design is required.

Make a Fail-Safe System: 

Design a fail-safe system that accommodates

the possibility of switch or power failure as well as operator error. In critical
applications, KOBOLD recommends the use of redundant backup systems
and alarms in addition to the primary system.

Summary of Contents for ZDM Series

Page 1: ...sitive Displacement Flow Meter User Instructions USA 1801 Parkway View Drive Pittsburgh PA 15205 PH 412 788 2830 Canada 9A Aviation Point Claire QC H9R 4Z2 PH 514 428 8090 www koboldusa com ZDM_manual...

Page 2: ...g Plate 4 3 1 3 Bolt Torque Specifications 4 3 1 4 Connecting Piping to the Sensor 5 3 2 Electrical Connections 5 4 0 Operating Instructions 6 4 1 Turning the Unit On 6 4 2 Flow Measurement 6 4 3 Turn...

Page 3: ...tation by the force of liquid moving past the gears along the meter s housing Engagement of the gear teeth with the housing walls entraps a defined volume in the cavity between the gear teeth A detect...

Page 4: ...port The resolution of the ZDM is therefore determined by the volume between the gear teeth This entire procedure is completely independent of the properties of the liquid making the system applicabl...

Page 5: ...F Accuracy 0 3 of reading with viscosity 20 cSt Repeatability 0 05 of reading Electrical Data Sensor Type Qty 2 Push Pull Outputs Channels A B A B Signals are 90 out of phase Phase difference can be...

Page 6: ...h use of the four threaded holes in the base of the mounting plate These holes are metric and sized as follows ZDM XX02 to ZDM XX08 M6 6 mm metric ZDM XX09 to ZDM XX40 M8 8 mm metric 3 1 2 Attaching t...

Page 7: ...ation by purchasing a different mounting plate 3 1 4 1 If you have NPT threads coat the threads with a paste type pipe sealant before threading into the mounting plate We recommend that PTFE tape NOT...

Page 8: ...pply voltage Vcc minus 1 0 VDC A representation of the waveform is given in Diagram 4 2 1 ZDM Frequency Output Waveform on page 6 Each pulse in the transmitted signal represents a fixed quantity of li...

Page 9: ...oning condition The frequency of filter replacement and maintenance will depend on the level on cleanliness of the metered liquid The only wear component in the ZDM are the gear teeth The gear teeth w...

Page 10: ...9 ZDM FM Rev 11 10 Appendix A Pressure Loss vs Flow Rate at Various Viscosities...

Page 11: ...ZDM 10 FM Rev 11 10...

Page 12: ...11 ZDM FM Rev 11 10...

Page 13: ...ZDM 12 FM Rev 11 10 ZDM 0010 Pressure Loss...

Page 14: ...13 ZDM FM Rev 11 10...

Page 15: ...v 11 10 CAUTION PLEASE READ THE FOLLOWING WARNINGS BEFORE ATTEMPTING INSTALLATION OF YOUR NEW DEVICE FAILURE TO HEED THE INFORMATION HEREIN MAY RESULT IN EQUIPMENT FAILURE AND POSSIBLE SUBSEQUENT PERS...

Page 16: ...designed for use in media temperatures from 40 to 248 F and for use at pressures up to 6500 PSIG depending on model Operation outside these limitations will cause damage to the unit and possible pers...

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