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Sapcon CASPER Instruction Manual

Capacitance level limit switch
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INSTRUCTION MANUAL
CASPER
Capacitance Level Limit Switch
Version 1.2

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Summary of Contents for Sapcon CASPER

  • Page 1 INSTRUCTION MANUAL CASPER Capacitance Level Limit Switch Version 1.2...

  • Page 2: Table Of Contents

    22.1 Electrical Connections ..........® Sapcon Instruments Pvt.Ltd.
  • Page 3 31 Product Selection Order Code ..........® Sapcon Instruments Pvt.Ltd.
  • Page 4 Casper Product Image ........
  • Page 5 Casper with Baffle ........
  • Page 6 Certifications ........... . ® Sapcon Instruments Pvt.Ltd.

  • Page 7: Revision History

    • Copyright: All content on this document, such as text, graphics, logos and images is the property of Sapcon Instruments Pvt. Ltd. The selection, arrangement and presentation of all materials on this document and the overall design of this document is the exclusive property of Sapcon Instruments Pvt.

  • Page 8: Introduction

    • Grain Handling 2 Operating Principle Casper works on the principle of capacitance. The probe comprises a sense electrode, electrically isolated from the metallic tank using a suitable insulator. The sense and the vessel wall serve as the two electrodes of a capacitor with the service material acting as the dielectric.

  • Page 9: Electrical Specifications

    Up to Operating Pressure Up to 10 bar Mounting • Screwed: 1/2",1”,1 1/2", 3/4” BSP / NPT • Flanged: As per user specification Probe Length 100 mm to 3000 mm Insulation Full PTFE Table 2: Mechanical Specifications ® Sapcon Instruments Pvt.Ltd.

  • Page 10: Application Specifications

    Baffle Use external line suppressors and fuse wires to con- tain the risk of damage to the circuit. CASPER Figure 4: Casper with Baffle COVER RELAY 1 UNCOVER CALIBRATE 3. To prevent the ingress of moisture and water seepage...

  • Page 11: Calibration

    Follow the given procedure to calibrate the sensor: terial. For applications using conductive materials (water, • acid based pastes etc.), Casper needs to be calibrated with Install Casper in an empty tank. the application material. This will make the instrument spe- •...

  • Page 12: For Two Point / Pump Control Logic

    1. Low Calibration For Low Calibration, fill the tank with UNCOVER the application material such that it touches the tip of CALIBRATE Casper’s probe as shown in Figure 16 and follow the HI CALIBRATE instructions given in the section Calibration for Non- conductive Material.

  • Page 13: For Two Point / Pump Control Logic

    12 Uncover Delay When the application material uncovers Casper’s probe, • To test, dip Casper into the application material until the changeover of the output can be delayed by a pre- the switching point is reached. determined time. This time is called UNCOVER Delay. For For Two Point / Pump Control Logic 11.2...

  • Page 14: Two Point / Pump Control Logic

    12.2 Two Point / Pump Control Logic dia. Casper has a LED bar display which helps in visualizing the desired sensitivity level. The device ships with a default sensitivity level of 3.

  • Page 15: Failsafe

    Figure 35: Failsafe Low Please refer to Table 10 before selecting sensitivity value. 15 Display Indications SENSITIVITY DIELECTRIC CONSTANT As seen in Fig.36, Casper has STATUS LEDs and a 6- point LED bar display. 20-30 5-20 CASPER COVER...

  • Page 16: Status Led

    Casper’s probe and vice- 17 Selection of Output Options versa, as shown in Figure 37. Casper can be used with 3 output options as per require- Material moves far ment which are as follows: Downward movement of LEDs 1.

  • Page 17: Indication Of Output Options

    To see the output mode, press and hold ENTER key. 19 Error Indication • If the only the first LED lights up, Casper is operating On error, the status LED starts blinking RED and GREEN in the single point switching mode without material.

  • Page 18: For Namur Module

    II & IO = 16 mA Power Consumption PI & PO = 65 mW Input Capacitance 0 uF Input Inductance LI = 22 uH ° ° Certification Ex ia IIC T6 Ga (-20 Tamb Table 8: Namur Isolation Barrier Specifications ® Sapcon Instruments Pvt.Ltd.

  • Page 19: Installation Guidelines

    User Manual & Datasheet V 1.2 Material Inlet Source 22 Installation Guidelines Baffle The Casper can be installed in the vessel in almost any position. While installing, please take care of the following points: • Ensure that atleast 10 mm for the "Grounding" elec- trode on the Casper probe should be completely inside Figure 47: Casper with Baffle...

  • Page 20: Normal Calibration

    To start the calibration process, set the CALIBRATE switch to CLOSE (Opposite of OPEN in a DIP switch) • Dip the Casper in test tank & fill the tank with the ap- position as shown in Figure 53. plication material such that the Casper’s probe is com- pletely covered with the material.

  • Page 21: Remote Calibration

    For applications using conductive materials (water, acid Note: Remote calibration is performed when test based pastes etc.), Casper needs to be calibrated with the tank is not available in Safe Zone (Zone 2) and cal- application material. This will make the instrument specific ibration needs to be performed in Hazardous Zone to the application material i.e.

  • Page 22: Output Current Configuration

    Change to the "Functional Operating Voltage" may cause instrument will not be able to switch. To resolve this condi- a change in power consumption for Casper Namur level tion, the value of output current should be adjusted by set- sensor. The output current can be configured is required as ting High Current Configuration.

  • Page 23: Sensitivity

    GREEN NOT USED Figure 70: Saving Sensitivity Tank 8. Check operation of Casper by filling in and draining out Figure 67: Sensitivity Setting the material. 2. Kept the electronics in Safe Zone(Zone 2) and then set 9. If the instrument does not switch when covered fully the Sensitivity.

  • Page 24: Failsafe

    The electronics of Casper needs no maintenance. When sensitivity value to default values. Factory Rest does not cleaning and checking the vessel, free the Casper from de- reset any calibration values. posits. If the material has tendency to form a hard sticky 1.

  • Page 25: Customer Support

    To further ease the process of installation and use, we have developed special demo videos which are hosted on YouTube. Sapcon’s YouTube channel, SAPCON INSTRUMENTS, lists all these videos: https://goo.gl/dnxfcz Should you require further information regarding installa- tion, use or working of the instrument, please don’t hesitate to contact us.

  • Page 26: Namur Selection Order Code

    User Manual & Datasheet V 1.2 30 Namur Selection Order Code Product CPR : Casper - Microcontroller based Capacitance type Level Limit Switch (Use in Fine Powder, Bulky Solids, Slurries, Liquids etc.) Type I : Integral (sensor in same unit)
  • Page 27 STS4 : SS 304 STS6 : SS 316 Probe Length 1H5H : 100 mm to 1500 mm (Only with 1/2” Mounting) 5H30H : 500 mm to 3000 mm (Only with “Grounding”) 1H30H : 100 mm to 3000 mm ® Sapcon Instruments Pvt.Ltd.

  • Page 28: Product Selection Order Code

    User Manual & Datasheet V 1.2 31 Product Selection Order Code Product CPR : Casper - Microcontroller based Capacitance type Level Limit Switch (Use in Fine Powder, Bulky Solids, Slurries, Liquids etc.) Type I : Integral (sensor in same unit)
  • Page 29 STS4 : SS 304 STS6 : SS 316 Probe Length 1H5H : 100 mm to 1500 mm (Only with 1/2” Mounting) 5H30H : 500 mm to 3000 mm (Only with “Grounding”) 1H30H : 100 mm to 3000 mm ® Sapcon Instruments Pvt.Ltd.

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