Zaxis Isaac PD User Manual
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Zaxis Isaac PD User Manual

Pressure decay leak tester
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Isaac
PD
Pressure Decay Leak Tester
A User's Guide
Ver. 1.00

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Summary of Contents for Zaxis Isaac PD

  • Page 1 Isaac Pressure Decay Leak Tester A User’s Guide Ver. 1.00...
  • Page 2 Isaac Pressure Decay Leak Tester A User’s Guide Ver. 1.00 WEBSITE: https://zaxisinc.com EMAIL: info@zaxisinc.com PHONE: 801.264.1000 HEADQUARTERS: 2442 South 2570 West West Valley City, UT 84119 *Wall or stand mounted *Fixture Not Included - (Example of use)
  • Page 3 For Your Safety. Install all equipment according to local safety codes. Additional guidelines when working with the Isaac PD Pressure Decay Leak Tester: » Always wear eye protection when working with compressed gas. » Beware of possible hazardous voltages present inside the enclosure.
  • Page 4 Please refer to your user manual for more detailed information. ZAXIS INC., therefore, warrants only as follows: Supply clean dry air only to the unit. Each unit is identified by serial number in a permanent record of the company. If at any time with-in three years after any ZAXIS INC.
  • Page 5 The Isaac PD Leak Tester is the latest product from Zaxis designed to meet today’s quality assurances demands. The compact size of the Isaac PD makes it easy to use in a variety of testing situations. By reducing the internal and connection volumes, the test sensitivity will increase and test times can be reduced.

  • Page 6: Table Of Contents

    6.1) Test Tooling and Fixtures 6.2) Engineering Data 6.3) Physical Laws 6.4) Glossary 7. Maintenance/Troubleshooting 7.1) Internal Leaks 7.2) Valve Cleaning 7.3) Filter 7.4) Fuse 8. Mount Installation Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 7: Front Panel

    Front Panel. Fig. 1. Front Panel of the Isaac PD. 1. Touch Screen Interface (TSi) — The liquid crystal touch screen display is the primary control of the leak tester. 2. Start Button — Push to Start. Push again during test to Abort.

  • Page 8: Bottom Panel

    Bottom Panel. Fig. 2. Bottom Panel of the Isaac PD. 1. Air Supply — (air or other test gas) Con- fuse holder. Power entry is capable of a nection is 1/8”-27 F NPT (Similar to R1/8 range of 109-255~VAC. 2A Fuse (Service...

  • Page 9: Control Screen

    Control Screens. Fig. 3. About Screen for the Isaac PD. Run Mode — Press this button to change to the run mode to begin testing. Program — Contains three sub-menus (Pressure, Fixture, and Settings) that Prog control the parameters of the test.

  • Page 10: Data Input

    Fig. 4a. Numeric Keypad Screen. Fig. 4b. Alpha-Numeric Keypad Screen. To access: press desired data field with your finger or stylus. Press the SHIFT key to change case. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 11: Run Mode Screen

    Fig. 5. Run Mode Screen. 1. Test Fail 2. Test Pass 3. Access Configuration Mode 4. Pressure over Time test graph 5. Test Result Value 6. Timer 7. Pressure in psig Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 12: Configuration

    Program Settings Three menus control all the parameters associated with the test process: Pressure test settings Pressure Fixture valve settings Fixture Test parameters Settings Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 13: Pressure

    5. Valve On — Check box the opens the test port valve. 6. Stats — 7. Loops — Loops programs however many times Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 14 Parameters to USB The parameters of test can be either saved to or loaded from an external USB plugged into the USB port on the front of the tester. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 15: Fixture

    3. Hold Clamps on Fail — Keeps the clamps in their test po- sition and the fail indicator LED will flash to alert the user of failure. 4. Output Results — Output the results via USB or Ethernet. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 16 Select the check boxes for USB or Ethernet, in conjunction with set Data Logging tions (discussed in Data Logging section) to output the desired results to either a USB drive or over Ethernet. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 17: Settings

    6. Vent — A safety mechanism to allow test pressure to be evacuated form the test part before the user removes the part from the tester. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 18 To see the decay in the full timer length, check the Evaluate at End of Test checkbox. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 19 Select the check boxes for USB or Ethernet, in conjunction with set Data Logging tions (discussed in Data Logging section) to output the desired results to either a USB drive or over Ethernet. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 20: Units

    Standard Cubic Centimeters column per Minute (SCCM) leak rate calcu- lation. a. The default value is set to the pressure at sea level (14.70 psi). Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 21: Calibrate

    All Zaxis calibrations are traceable to standards set by the NIST. The Isaac PD Pressure Leak Tester uses up to ten calibration points. All ten points are dynamic and can be adjusted to match the user’s accuracy needs across the sensor range.
  • Page 22 WARNING! Calibration should always be performed in units of psig. Calibration of this instrument is for the sensor only (not a leak calibra- tion) and is factory set. Leak standards can be obtained from Zaxis Inc. and can be used as a transfer standard to establish applicable leak rates.
  • Page 23 Vacuum Even though both sensor types are shown each unit will have model specific sensors installed. For details, see the calibration report shipped with the tester. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 24 (upper right corner). Repeat for all required calibration points. » Zero/Tare To set zero, uncap port, disconnect air, open valve, and touch the Zero/Tare but- » ton. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 25 Sequential models can trap a small amount of pressure internally between the channel selection valve and the pressure transducer. Make sure to open the valves to clear any pressure before pressing the “TARE” button. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 26: Options

    There are eight menu options: 1. Touchscreen Calibration 2. Clock 3. I/O Setup 4. Data Logging 5. Lock Tester 6. Change PIN 7. Other Options 8. Ethernet Settings Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 27: Touchscreen Calibration

    On the calibration screen, the user is asked to touch specific targets with their stylus to adjust the touch pad to the display. Settings will automatically save. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 28: Clock

    A numeric keypad screen will open. Changes will not appear until the unit’s power has been cycle on/off. Change one field at a time and cycle power after changing each field. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 29: I/O Setup

    START button is pressed. Typical door interlock option. If the input is released before the test ends, the test will abort. A typical application would be for a door switch on a safety enclosure. (Input 1) Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 30 This screen allows the user to test the input bit pattern to help de bug wiring from the remote control (PLC etc). The value from the input register will display when the input is held active. (See I/O pin out chart for Input Test Values) Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 31 In the case that a thumb drive is inserted but isn’t recognised ‘Mount’ the drive by going to Setting -> Data Logging and Press the ‘Mount’ button. Figure 1.3 Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 32: Data Logging

    In Figure 1.4 under “Output Results” by clicking ‘USB’ nyou have the option to save your “Data Logging Output” to the USB Thumb Drive. If “Disable data logging” is selected under “Data Logging Output” no data will be saved to the USB Thumb Drive. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 33 - If you are still having trouble make sure you are using a High Quality Thumb Drive and that the File System is formatted in Fat 32. NTFS Formats will not work Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 34: Lock Tester

    Lock Tester. Fig. 15. Lock Tester Screen. There are three lockable sections of the Isaac PD. Select the section to lock by touching its radio button with your finger or stylus. Locking the calibration will not allow access into the screens entirely.

  • Page 35: Change Pin

    Fig. 16. Change PIN Screen. To lock the tester, a Personal Identification Number (PIN – 4 digits) must be established. The Current PIN from the factory is blank. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 36: Ethernet Settings

    ASCII Data Over the Ethernet Test data can be collected via the Ethernet connection on the rear panel of the Isaac PD. To collect data on a laptop, you will need a crossover Ethernet cable and a termi- nal emulation program, such as HyperTerminal.
  • Page 37 Ethernet connections. 3. Scroll down to the section Ethernet adapter Local Area Connection record the value of the IPv4-Address. 4. On the Isaac PD: under OPTIONS → ETHERNET SETTINGS, turn the DHCP selection to OFF. 5. The...

  • Page 38: Reference

    • Size — How much production space do you have? • Component Selection — Custom designed pieces or off-the-shelf technology? Zaxis can deliver a complete turn-key system designed to your specifications. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 39: Engineering Data

    Volume = Volume of product and leak tester and any fixture volume. Atm = Atmosphere pressure (psia) eg sea level = 14.7 at 68 F. Adjust at elevation is required. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 40: Physical Laws

    0.9%, and the remaining 0.1% is composed of many trace gases, the most significant being carbon dioxide and water vapor. Water vapor is present in highly variable quanti- ties ranging from 0 to 4% by volume. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 41 Fluid mechanics is mostly concerned with Newtonian fluids, or those in which stress, viscosity, and rate of strain are linearly related. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 42 With rho {ρ}, L, and mu {μ} constant, Re varies simply as velocity changes. For flow in smooth round pipes, critical value is about 2,000, with L equal to the diameter of the pipe. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 43 Charles’s Law to be written V/T = Constant, where V is the volume of the gas, T is the temperature on the absolute scale, and the constant depends on the pressure and the amount of gas present. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 44 Any process that occurs without heat transfer is called an adiabatic process. The adiabatic compression, or expansion of a gas, can occur if the gas is insulated from Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 45 For example, when air is pumped into an automobile tire, the air temperature rises as a result of adiabatic compression. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 46: Glossary

    Standard bulkheads on the front have a 1/8” NPT (similar to R1/8 BSPT British Standard Pipe Taper) female thread. Isaac offers a variety of bulkhead options. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 47 Isaac applies test pressure. Decay — The amount of pressure a product can lose during a test period before going out of an established tolerance. Also called pressure drop. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...
  • Page 48 (2) A calibrated device to challenge the tester on an as needed basis. This de- vice is calibrated and traceable. For example, a daily verification can be done to ensure the tester will still find the required flow value. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 49 Interface — Communication between the Isaac and a peripheral device such as a computer or printer. The Isaac PD has three interfaces: an Ethernet port, discrete I/O points, and a footswitch connector. I/O (Input/Output) — Connections the Isaac uses to communicate with computers or Programmable Logic Controllers (PLCs).
  • Page 50 Operator — The person who connects products to the Isaac, presses the START but- ton, and monitors the system while under test. For the purposes of this guide, the op- erator is separate from the user. Users typically handle Isaac’s setup and programming. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 51 Pilot Air — Certain applications require the use of pneumatics that is pilot actuated. A steady air supply is required to assist in the operation of these valves. Zaxis’ propri- etary air valve requires 85-100psi to function correctly.
  • Page 52 Supply Air — Compressed air or gas connected to the rear fitting labeled Supply. Isaac’s standard fitting is a 1/8” NPT (Similar to R1/8 BSPT British Standard Pipe Taper) female thread bulkhead. Air must be clean, dry, and free of oil. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...
  • Page 53 Target — A preprogrammed number that Zaxis stores in firmware used to calibrate the Isaac’s pressure and flow sensors. The target value is matched to a pressure or flows standard to create a lookup table for sensor linearity adjustment. Test Circuit — The pneumatic tubing, fittings, valves, and sensors that make up Isaac’s internal air passages.
  • Page 54 Isaac’s internal chamber. If a vent step is not required (for instance if you want to unplug product to vent pres- sure), set the Vent timer to 0.0 and uncheck the Auto box. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 55: Maintenance/Troubleshooting

    Printed Circuit Board (PCB) and the main PCB to the I/O are seated and square to the connectors (See Fig. 16). Out of alignment flex ribbons will cause damage to the PCB. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 56: Internal Leaks

    2-way valve, holding the valve in an open position. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 57: Valve Cleaning

    The valve is re-assembled by placing the spider seal into the lower section of the valve with the bottom facing the valve seat, followed by the spacer ring, and lastly the valve coil is pressed into the lower section secured by the knurled ring. Zaxis Inc. LLC 801.264.1000 2442 South 2570 West...

  • Page 58: Filter

    Some units will have a regulator/filter combination. Disassembly of the filter portion is identical. The filter size is 5 micron. Filter Element Element Lock Nut Capture Bowl Protective Cover Fig. 22. Disassembly of Filter Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 59: Fuse

    Fig. 23. Fuse. The installed fuses are: 5 X 20mm, 250V F 2.0A. Both line and neutral are fused. The fuse should be seated towards the insertion end of the cradle Zaxis Inc. LLC 801.264.1000 2442 South 2570 West West Valley City, UT 84119...

  • Page 60: South 2570 West

    Isaac PD metal backplate comes with four pre drilled holes for mounting screws Place Isaac PD on top two screws then screw bottom two screws. Once secure, tighten all screws. Connect all connectors and...

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