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Summary of Contents for Kobold VKA-*102 series
- Page 1 KOBOLD VKA FLOWMETER/SWITCH User Instructions Manual-VKA_03-04...
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Page 2: Table Of Contents
Table of Contents General ..........1 Specifications . -
Page 3: General
1.0 __General The KOBOLD VKA is a viscosity compensated flowmeter intended for use in applications where changing viscosities of the measured media make flow determination difficult. The VKA offers viscosity independent behavior for fluids in the range of 30-300 cSt (full compensation). -
Page 4: Specifications
2.0 __ Specifications Table 2.1; Material Composition Material: Brass Nickel-plated Brass Housing 301 Stainless Steel Spring 301 Stainless Steel Orifice Ceramic Oxide Magnet Nickel-plated Brass Connections Brass Float PTFE Seal Table 2.2; Operational Limits Viscosity Range: v = 30-300 cSt (mm²/s) Maximum Medium Temperature: 212°... -
Page 5: List Of Diagrams Diagram 2.3 Dimensions
Diagram 2.3; Dimensions HEX (in) L (in) B (in) D (in) E (in) Weight (lb.) 1.57 0.87 VKA-.102 1.42 1/2 (3/4)* VKA-.104 1.42 1/2 (3/4)* 1.57 0.87 VKA-.106 1.42 1/2 (3/4)* 1.57 0.87 VKA-.108 1.42 1/2 (3/4)* 1.57 0.87 VKA-.110 1.42 1/2 (3/4)* 1.57... -
Page 6: Diagram 2.4 Wiring Of The Reed Switch
Diagram 2.4; Wiring of Reed Switch N/O Contact SPDT Contact Table 2.5; Electrical Data and Operational Limits Maximum Voltage: 240 VAC Maximum Current: N/O: 1.5 A SPDT: 0.8 A Maximum Power Dissipation: N/O: 50 VA SPDT: 30 VA Environmental Protection: IP 65 (IEC 259) (Equal to NEMA 4) UL recognized, CSA approved... -
Page 7: Principle Of Operation
3.0 __Principle of Operation The KOBOLD VKA flowmeter has a spring-loaded float which slides within a cylindrical measuring tube. Our patented process for achieving viscosity compensation hinges on the use of the nonlinear behavior of the float spring in combination with a unique orifice integral to the float itself. -
Page 8: Adjusting The Set Point For Increasing Flow
This would prevent proper operation of the device. Unclean media should be filtered upstream of the VKA. KOBOLD offers a magnetic/membrane filter for such purposes (Type MFR). 4. Do not install the meter on large masses of ferritic materials or in areas where strong electric fields are present, as this will hamper proper operation of the reed contact. -
Page 9: Contact Protection
If continuous load values exceed contact rating, we recommend the use of an isolation relay. KOBOLD provides a line of relays for such instances. Diagram 2.6; Contact Protection... - Page 10 If damage is visible, notify your local carrier at once, since the carrier is liable for a replacement under these circumstances. If your claim is refused, please contact KOBOLD Instruments for further advisement. 6.0 __Need help with your VKA? Call one of our friendly engineers at 412-788-2830.
- Page 11 Caution PLEASE READ THE FOLLOWING GENERAL FLOW METER/ MONITOR WARNINGS BEFORE ATTEMPTING INSTALLATION OF YOUR NEW DEVICE. FAILURE TO HEED THE INFORMATION HEREIN MAY RESULT IN EQUIPMENT FAILURE AND POSSIBLE SUBSEQUENT PERSONAL INJURY. FM Revision 3/24/04...
- Page 12 • 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 properly, to perform tests of the installed system, and to maintain all components.
- Page 13 Design a fail-safe system a. Design a fail-safe system that accommodates the possibility of switch or power failure. In critical applications, KOBOLD recommends the use of redundant backup systems and alarms in addition to the primary system. FM Revision 3/24/04...
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