Manual - Netech
Contents
1.2. DESCRIPTION On Power up after displaying the model and software version the display switches to the main menu as shown below lt AIR 0 00 SCCM gt GAS UNIT ZRO PEAK The top line indicates the gas selected The default selection is AIR the reading and the unit of measurement The bottom line shows four choices To select these functions use the function keys F1 to F4 The choices are GAS Selection of gas under measurement UNT Unit of Measurement The DigiFlo only measures in SCCM Standard Cubic Centimeters per Minute ZRO Zeros the display prior to actual measurement PEAK Enables the peak capture mode of operation FLOW MEASUREMENT From the main menu select the gas to be measured Connect the DigiFlo to the flow source Insure the system pressure will not exceed 20 PSI and the rate will not exceed 500 SCCM The gas flow rate will be indicated in SCCM and read directly without any conversion DIGIFLOW 1000 USER MANUAL REV 2 11 For in line operation connect the DigiFlo in line with the flow source Observe the correct orientation with respect to input output GAS SELECTION PEAK From the main menu press F1 key to select the desired gas under measurement The available gases are displayed on the bottom line Gases that the DigiFlo will measure are AIR N2 O2 and CO2 The gas to be measured can then be selected by pressing the corresponding function key The selected gas will then be displayed on th
3. misuse of the unit by the purchaser his employees agents or customers In no event shall Netech Corporation be liable for consequential damages Trademarks Netech and Digiflo 1000 are trademarks of Netech Corporation Any other trademark names used in this manual are only for editorial purposes and the benefit of the respective trademark owner with no intention of improperly using that trademark DIGIFLOW 1000 USER MANUAL REV 2 4 Safety Considerations General Before using the DigiFlo 1000 read the instruction manual and become familiar with all of the functions and controls Safety Symbols WARNING The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met CAUTION The CAUTION sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the instrument Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met The symbol to the left is the operator s manual symbol When you see this symbol on the instrument refer to the operator s manual DIGIFLOW 1000 USER MANUAL REV 2 5 TABLE OF CONTENTS Introduction Caut
4. INSTRUCTION MANUAL DIGIFLO 1000 Digital Gas Flow Meter NETECH 110 Toledo Street eFarmingdale NY 11735 e USA www netech org Dear User We appreciate your purchase of the Digiflo 1000 Digital gas flow meter Properly used the Digiflo 1000 will deliver years of high performance and accuracy This instruction manual has been designed as a tool to assist you in getting the most from your Digiflo 1000 In order to properly use and to maintain this instrument please read the manual carefully Netech is recognized as an innovative designer and manufacturer of advanced biomedical and industrial test instruments We are ISO 9001 2000 registered and fully committed to a continual improvement process Further we guarantee absolute satisfaction with our products Your business is important to us and we are dedicated to providing you with the best customer and technical service possible Please contact us should you have any questions or concerns regarding your instrument We hope you will consider us again when you have a requirement for accurate reliable affordable test instruments Sincerely NETECH CORPORATION DIGIFLOW 1000 USER MANUAL REV 2 Copyright Copyright 2003 by Netech Corporation All rights reserved No part of this publication may be reproduced or transmitted in any form other than for the purchaser s personal use without written permission from Netech Corporation Quality Assurance Net
5. ce the input pressure should not exceed 20 PSI Hammer pressure levels in excess of 20 PSI will cause damage to the transducer Do not use the DigiFlo to measure gases containing liquid or liquid vapor Do not exceed a flow rate of 500 SCCM If the DigiFlo is subjected to an overflow condition erroneous readings will occur and the unit may require re calibration Do not use the DigiFlo to measure corrosive gases or H2 gas and He gas Any of the above conditions may cause damage to the transducer and is not covered under Warranty DIGIFLOW 1000 USER MANUAL REV 2 FUNCTIONAL OVERVIEW On Power up the microcontroller performs a self test and displays the model and software version for five seconds If the battery voltage drops to below 6 8 volts the microcontroller senses this and alerts the user by flashing the message Low Battery Do not use the DigiFlo should this message appear unless a fresh battery is installed or the unit is powered with the optional AC power adapter For the accurate performance of the DigiFlo always use a fresh battery or AC adapter Low battery condition will cause erroneous readings OPERATIONS amp CONTROL The display on the DigiFlo is a two line 16 character LCD The Keypad consists of 8 tactile momentary keys marked as F1 through F4 hereafter referred to as the function keys Left arrow lt right arrow gt menu and on off DIGIFLOW 1000 USER MANUAL REV 2 10 MENU
6. e carrier On receipt if the shipping container appears to have been damaged during shipment the instrument should be thoroughly inspected The delivering carriers paper should be signed noting the apparent damage If the instrument is damaged beyond use a new order should be placed with NETECH while awaiting reimbursement from the carrier for the damaged instruments Malfunction Please follow these steps for the repair or recalibration of your NETECH instrument 1 Obtain a Service Repair Form from our website at www Netech org Or from Customer Service Department Phone 631 531 0100 Fax 631 531 0101 Toll Free 800 547 6557 2 Complete the Service Form indicating the instruments model number serial number shipping and billing information Include the purchase order number or credit card information for the cost of the repair and or recalibration DIGIFLOW 1000 USER MANUAL REV 2 15 3 Securely package your instrument in a strong box surrounded by at least two inches of suitable shock absorbing material 4 Include a copy of the purchase order or reference your purchase order on your packing slip 5 Include the completed Service Form 6 Ship the instrument to the following address NETECH CORPORATION 110 TOLEDO STREET FARMINGDALE NY 11756 USA ATTN SERVICE DEPT Please visit our web site www Netech org for the latest product updates and new product releases DIGIFLOW 1000 USER MANUAL REV 2 16
7. e top line After the gas selection is made pressing menu will return the user to the main menu The unit of measurement cannot be changed on the DigiFlo 1000 For PEAK readings press F4 The PEAK function flashes indicating that the value displayed is the PEAK capture reading To remain to the normal mode press PEAK F4 again GAS CONNECTIONS The gas connections are made through the two Lure Lock connections on top of the unit The left connector is for the input The right connector is for the output Reversal of these connections will result in a negative reading DIGIFLOW 1000 USER MANUAL REV 2 12 SPECIFICATIONS FLOW RANGE 0 1 to 500 SCCM auto ranging MAX PRESSURE 20 PSI CALIBRATED GASES Air N2 O2 and CO2 ACCURACY 2 FS 10 Digits SENSOR TYPE Micro Bridge Mass Flow POWER REQUIREMENTS One 9 volt alkaline battery or Optional AC Adapter DISPLAY 2 Line 16 character LCD CONNECTORS Luer Lock PHYSICAL DIMENSIONS Size 6 0 X 3 5 X 1 5 inches 15 2 X 8 9 X 3 8 cm Weight 10 oz 28 kg ENVIRONMENTAL Operating range 59 to 95 F 15 to 35 C Storage Temperature 0 to 122 F 18 to 50 C Relative Humidity 90 max at Temperatures DIGIFLOW 1000 USER MANUAL REV 2 13 APPENDIX DIGIFLOW 1000 USER MANUAL REV 2 14 INSTRUCTIONS FOR RETURN Damaged in Transit All shipments are carefully examined by NETECH and carefully packaged for shipment They are insured in the customer s name with th
8. ech Corporation is ISO 9001 2000 registered This instrument was thoroughly tested and inspected according to Netech s ISO 9001 2000 quality standards and test procedures and was found to meet those specifications when it was shipped from the factory Warranty Netech warranties the Digiflo 1000 against defects in materials and workmanship for one year from the date of original purchase The standard warranty is extended for a second year if the instrument is returned to Netech for its recommended yearly recalibration During the warranty period we will repair or at our option replace at no charge a product that proves to be defective provided you return the product shipping prepaid to Netech Corporation This warranty does not apply if the product has been damaged by accident or misuse or as the result of service or modification by other than Netech Corporation or if its serial number is defaced or removed DIGIFLOW 1000 USER MANUAL REV 2 Netech reserves the right to discontinue the Digiflo 1000 at any time and change its specifications price or design without notice and without incurring any obligation Netech guarantees availability of service parts for 5 years after the manufacture of the unit is discontinued The warranty is void if you elect to have the unit serviced and or calibrated by someone other than Netech The purchaser assumes all liability for any damages or bodily injury that may result from the use or
9. ion Functional Overview Operations amp Control Menu Description Flow Measurement Gas Selection Peak Gas Connections Specifications Instructions for Return LIST OF FIGURES Figure 1 Front View DigiFlo 1000 DIGIFLOW 1000 USER MANUAL REV 2 10 10 11 11 12 12 13 15 INTRODUCTION DigiFlo is a micro controller based hand held air and gas flow meter designed for the accurate measurement of volumetric flow which is independent of temperature and pressure The measurement of the DigiFlo is direct and no correction is required for temperature and pressure unlike the bubble flow meters and diaphragm type flow meters No water vapor corrections are necessary as with bubble meters DigiFlo incorporates an accurate micro mass flow sensor which operates on the theory of heat transfer due to mass airflow directed across the surface of the sensing element Though the DigiFlo is menu driven and user friendly it is recommended to read the following sections to familiarize the user of all aspects of operation DIGIFLOW 1000 USER MANUAL REV 2 7 ONETECH DigiFio Display Two line 16 Character LCD Keypad Function Keys Two Lure Locks for Gas Connection ROD Figure 1 Front view of DigiFlo 1000 DIGIFLOW 1000 USER MANUAL REV 2 CAUTION Before attempting to use the DigiFlo please observe the following precautions 1 When using the DigiFlo in line with a flow sour
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