Model 100 LP29Hg Manual
Contents
1. NON INFRINGEMENT OR ANY OTHER WARRANTY EXPRESSED OR IMPLIED LIMITATION OF LIABILITY You agree and acknowledge DigiVac shall have no liability to you whatsoever for any direct indirect punitive incidental special consequential damages arising out of or connected with the use or misuse of its products In particular given the nature of DigiVac products you agree and acknowledge under no circumstances whatsoever shall DigiVac be liable to you for any consequential damages for damage to any non DigiVac product or service arising from the failure use or misuse of a DigiVac product including but not limited to any vacuum system engine vehicle factory or the like In the event a court of law with proper jurisdiction finds DigiVac liable to you for any purpose you agree and acknowledge DigiVac s maximum liability shall not exceed the purchase price of one unit of product giving rise to such liability or 250 00 whichever is greater ENTIRE OBLIGATION These terms and conditions express the entire obligation of DigiVac with respect to its products If any part of these terms and conditions are deemed void invalid unenforceable or illegal including but not limited to the warranty disclaimers liability disclaimers and liability limitations set forth above then the unenforceable clause or sentence may be disregarded with the remainder of these terms and conditions valid and enforced In the event the unenforceable clause or sentence lea2. based on a silicon piezoresistive sensor married to control and conditioning circuitry to yield fast sub second response 2 0 CONSTRUCTION The instrument is housed in a free standing plastic enclosure It is intended to be rack mounted on a panel or in a rack in a standard 1 8 DIN cutout The device has a rear bulkhead where the vacuum interface hose barbs are mounted 3 0 UNPACKING AND INSPECTION After the DIGIVAC is received it should be carefully unpacked and inspected for damage during shipment and for completeness The package should contain at a minimum the instrument power supply and an instruction manual In the event of a loss during shipment a claim should immediately be made to the common carrier or the postal service as applicable The DigiVac warranty pertains only to the instrument and does not cover losses in shipping The DigiVac Model 100LP29Hg includes 1 A Vacuum instrument with 0 56 4 Digit LED display and 3 32 hose barbs for vacuum suction and vent connections AC adapter that accepts 100 240VAC AC adapter pigtail to enable wiring to AC 3 feet of silicon tubing for suction Rack mount kit for installation in a 1 8 DIN cutout 3 32 hose barb to 1 8 MNPT brass fitting This Manual PNG Ov COTO 4 0 INSTALLATION The installation is fairly straight forward and can be performed by an electronics technician Choose a mounting location for the display unit that will be visible to the operator Make sure all
3. servicing of the unit is recommended Factory servicing and calibration are available at a nominal cost and turn around times of 24 hours are typical 6 2 FIELD CALIBRATION Each Digivac vacuum gauge controller is calibrated to the particular vacuum sensor that is shipped with the unit If a sensor or display is suspected for accuracy please send the device back to DigiVac for a recalibration 7 0 NOTES ON CALIBRATION The DigiVac device is calibrated under real vacuum using direct pressure standards traceable back to NIST 8 0 UNDERSTANDING PRESSURE Recall that the pressure of the atmosphere is 14 696 or approximately 14 7 pounds per square inch at sea level This pressure is due to the weight of all of the air in the earth s atmosphere above any particular square inch This 14 696 psi is equivalent to the pressure produced by a mercury column of approximately 29 92 inches high or 76 meters about 3 4 of a yard or 760 millimeters of mercury Atmospheric pressure varies greatly with altitude It decreases approximately 1 inch of mercury per thousand feet of altitude It also varies widely with local weather conditions Variations of one half inch in a single day are common The word vacuum means pressure lower than atmospheric or suction but in describing negative pressure the atmosphere is only a satisfactory reference if we are dealing with values of vacuum down to about 27 inches of mercury Below that it is much more useful to ta
4. DigiVac Precise Practical Personal INSTRUCTION MANUAL Digivac Model 100LP29Hg Differential Pressure Gauge Revsion 1 0 0 YOU MUST READ THIS MANUAL BEFORE USE The Digivac Company 105B Church Street Matawan NJ 07747 www digivac com 732 765 0900 732 765 1800 FAX CONTENTS 1 0 Description and Principle of Operation 2 0 Construction 3 0 Unpacking and Inspection 4 0 Installation 5 0 Operation 6 0 Servicing and Calibration 7 0 Notes on Calibration 8 0 Understanding Pressure 9 0 Accessories and Modifications 10 0 Attachments and Illustrations 11 0 Terms amp Conditions Digivac 501 series Instruction Manual Page 2 1 0 DESCRIPTION AND PRINCIPLE OF OPERATION The DigiVac Model 100LP29Hg is a highly reliable differential pressure gauge perfect when high accuracy is desired for clean dry air The differential pressure gauge has suction and vent ports The vent port acts as the reference for differential pressure If the vent port is exposed to atmosphere the gauge effectively becomes a gauge pressure gauge See our description at http www digivac com product_info understanding pressure in vacuum instrumentation pdf for more information on the difference between absolute gauge and differential pressure This device has a clearly marked terminal strips for all external connections Optional external connections include relays set points Analog out and RS232 digital output The pressure reading is
5. et of suitable operating conditions as set forth in its User Manual or as indicated otherwise by DigiVac Any use of the DigiVac Product for any purpose or under any conditions other than those specified shall render any limited warranty void and shall expressly invalidate any liability of DigiVac for damages as a result of such misuse USER LIMITATION You may not modify copy distribute transmit display perform reproduce publish license create derivative works from transfer or sell any information software products or services obtained from or created by DigiVac to any third party without the express written consent of DigiVac to do otherwise Any violation of this provision shall give rise to an indemnification of DigiVac by you for any third party claims arising out of such violation THIRTY 30 DAY LIMITED WARRANTY All DigiVac products are warranted against any manufactured defect for a period of thirty 30 days from date of purchase unless such product is a custom work for you and not a standard DigiVac product Any product qualifying as a custom work shall not be warranted against any defects for any purpose and your acceptance of such custom work shall relieve DigiVac of any liability for any purpose WITH THE EXCEPTION OF THE LIMITED WARRRANTY ABOVE YOU AGREE ANY DIGIVAC PRODUCT IS PROVIDED AS IS EXCLUSIVE OF ANY WARRANTY INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE
6. lk in terms of absolute pressure starting from absolute zero Digivac 501 series Instruction Manual Page 4 9 0 ACCESSORIES AND MODIFICATIONS The following are offered as accessory equipment or field installed modifications e RS 232 digital output or Analog Recorder output e 2 relay type C contacts NO NC Common that are tripped based on user settable set points e DS DigiVac Software that enables logging and plotting of differential data when interfaced to a DigiVac or customer supplied PC 10 0 ATTACHMENTS AND ILLUSTRATIONS Below are the Specifications of the system Range 0 29 92 Units inches of Hg Accuracy 05 Hg Vac Interface 3 32 hose barb Sensor DigiVac Differential Display 4 Digit 0 56 high red LED Dimensions 1 66 x 3 625 Power 5 0 VDC or 100 240VAC via supplied adapter Environmental IP20 Digivac 501 series Instruction Manual Page 5 11 0 TERMS AND CONDITIONS TERMS OF USE LIMITED WARRANTY amp LIABILITY WAIVER THE DIGIVAC COMPANY DigiVac offers all of its products with the following terms and conditions and notices as follows By accepting and or using a DigiVac product you hereby acknowledge and agree to the following terms and conditions and acceptance of these terms and conditions are a condition precedent to any purchase sale agreement between you and DigiVac EXCLUSIVE OBLIGATION The DigiVac product you are purchasing has been designed for a specific use within a s
7. of the cabling is securely fastened to insure a robust installation General Instructions Find a secure place on the panel rack that has room sufficient for wiring and visibility Make 1 8 DIN 92mm wide x 42mm high rectangular mounting hole Run Wires AC and any other wires Connect Wires Assemble rack mount kit and install in panel Power on the device with AC main there is no power switch on the gauge Digivac 501 series Instruction Manual Page 3 5 0 OPERATION After installation the DigiVac Model 100LP29Hgq is ready for immediate operation As soon as the power is applied the unit will be displaying differential pressure When both ports are exposed to atmosphere the unit will read 00 00 When a differential pressure is applied across the ports the number indicated will be the differential pressure in units of inches of mercury When a vacuum is applied to the suction port an increasing number will appear in units inches of mercury When a pressure is applied to the vent side an increasing number will result indicating pressure The instrument is designed for continuous operation 6 0 SERVICING There are no standard service intervals required for this device If a NIST calibration is required typical intervals are annual 6 1 FACTORY REPAIR AND CALIBRATION The vacuum gauge assembly is designed to provide years of trouble free service and the liberal internal use of plug in components make it easily repairable No field
8. ves a void in these terms and conditions a provision closely matching the intent of the unenforceable provision should be deemed inherent within these terms and conditions slightly modified to render such provision valid and enforceable GENERAL These terms and conditions are governed by the laws of the State of New Jersey USA You hereby consent to the exclusive jurisdiction and venue of the Courts of New Jersey in all disputes arising out of or relating to the use of this product Use of this product is unauthorized in any jurisdiction that does not give effect to all provisions of these terms and conditions MODIFICATION OF TERMS AND CONDITIONS DigiVac reserves the right to change the terms conditions and notices under which their products are offered Digivac 501 series Instruction Manual Page 6
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