Model 7425 TH-Calc Manual
Contents
1. try to keep the sensing probe surrounded by moving air Do not breathe on the probe since it may take time for the probe to re stabilize Use the probe holder when in continuous data logging mode Connecting to a Computer Use the Computer Interface USB Cable provided with the Model 7425 to connect the instrument to a computer for downloading stored data or for remote polling Connect the end labeled COMPUTER to the computer USB port and the other end to the data port of the Model 7425 For more information on how to download stored data see Chapter 3 section titled LogDat2 Downloading Software of the Model 7425 is not intended for connection to a public telecommunications network Connect the USB data port only to another USB port Ge Caution This symbol is used to indicate that the data port Chapter 3 Operation Keypad Functions ON OFF Key Press to turn the Model 7425 on and off During the power up sequence the display will show the following Model Number Serial Number Software Revision and Last Date Calibrated Arrow AV Keys Press to scroll through choices while setting a parameter Pressing the A Y keys simultaneously will lock the keypad to prevent unauthorized adjustments to the instruments To unlock the keypad press the AW keys simultaneously Enter Key Press to accept a value or condition Arrow lt or gt and Menu Soft Keys Press arrow keys to chang2. ENERGY AND COMFORT Indoor Air Quality TH CALc Thermohygrometer Model 7425 Operation and Service Manual 4 yo SCIENCE INNOVATION M Copyright TSI Incorporated 2007 All rights reserved Address TSI Incorporated 500 Cardigan Road Shoreview MN 55126 USA Fax No 651 490 3824 LIMITATION OF WARRANTY AND LIABILITY effective July 2000 Seller warrants the goods sold hereunder under normal use and service as described in the operator s manual shall be free from defects in workmanship and material for twenty four 24 months or the length of time specified in the operator s manual from the date of shipment to the customer This warranty period is inclusive of any statutory warranty This limited warranty is subject to the following exclusions a Hot wire or hot film sensors used with research anemometers and certain other components when indicated in specifications are warranted for 90 days from the date of shipment b Parts repaired or replaced as a result of repair services are warranted to be free from defects in workmanship and material under normal use for 90 days from the date of shipment c Seller does not provide any warranty on finished goods manufactured by others or on any fuses batteries or other consumable materials Only the original manufacturer s warranty applies d Unless specifically authorized in a separate writing by Seller Seller makes no warranty with respect to and
3. e choices while setting a parameter Press the Menu soft key to select the Menu selections which are Display Setup Settings Data Logging Applications Calibration Common Terms In this manual there are several terms that are used in different places The following is a brief explanation of the meanings of those terms Sample Consists of all of the measurement parameters stored at the same time Test ID A group of samples The statistics average minimum maximum and count are calculated for each test ID The maximum number of test IDs is 100 Time Constant The time constant is an averaging period It is used to dampen the display If you are experiencing fluctuating flows a longer time constant will slow down those fluctuations The display will update every second but the displayed reading will be the average over the last time constant period For example if the time constant is 10 seconds the display will update every second but the displayed reading will be the average from the last 10 seconds This is also referred to as a moving average Logging Interval The logging interval is a frequency period that the instrument will log readings For example if the logging interval is set to 30 minutes each sample will be the average of the last 30 minutes Menus DISPLAY SETUP Display setup menu is where you will setup the desired parameters to be displayed on the running scr
4. een With a parameter highlighted you can then use the ON soft key to have it show up on the running screen or select the OFF soft key to turn off the parameter Use PRIMARY soft key to have a parameter show up on the running screen in a larger display Only one parameter can be selected as a primary and up to 2 secondary parameters can be selected at one time SETTINGS Settings menu is where you can set the general settings These include Language Beeper Select Units Time Constant Contrast Set Time Set Date Time Format Date Format Number Format Backlight and Auto Off Use the lt or gt soft keys to scroll through the settings for each option and use the key to accept settings DATA LOGGING Measurements Measurements to be logged are independent of measurements on the display and must therefore be selected under DATA LOGGING gt Measurements 6 Chapter 3 Log Mode Log Settings You can set Log Mode to Manual Auto save Cont key or Cont time e Manual mode does not automatically save data but instead prompts the user to save a sample e In Auto save mode the user manually takes samples that are automatically logged e In Cont key mode the user starts taking readings and logging by pressing the key The instrument will continue taking measurements until the key is pressed again e In Cont time mode the user starts taking readings and logging by pressing the key The instrument will continue taking samp
5. except by writing signed by an Officer of Seller Service Policy Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our customers our service policy is designed to give prompt attention to any problems If any malfunction is discovered please contact your nearest sales office or representative or call Customer Service department at 800 874 2811 USA or 1 651 490 2811 International CONTENTS CHAPTER 1 UNPACKING AND PARTS IDENTIFICATION CHAPTER 2 SETTING UP uuussuusssnussnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nen Supplying Power to the Model 7425 TH CaLc Thermohygrometer unnssnnnesnnnnnnnnnnennnnnnnennnnnnnnnnnnnnnnn nn Installing the Batteries 244444n nn ne nnnnnnnennnnnnennnn nn Using the Optional AC Adapter 4snenenenenennennennene Using The Probe 240sss2s44nnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nennen Connecting to a Computer uussssnneeesssnnnnnnnsnnnnnnnnnnnnnnnnnnnn nenn CHAPTER 3 OPERATION nnuussusuasanennnnnnnnnnennnnnnnnnnnnunnnennnnennnnnnnnnnen Keypad FUNCUONS cuidat abe Common TEMS asensin oiiaii naa nn nnnn cnn RE SETTINGS cocinada a aa DATALOGGIN O ee aa Measurements cceceeeeeeeeeeeenneeeeeeenteeeeeeteeeeeeaeeeeeeaeeeeeenaeeeeeeaas Log Mode Log Settings sinsa aena NE Ea a Delete Data ua ee SO MEMO nel APPLICATIONS count dde LogDat2 Downloading Software o
6. l value Sensor type Thin film capacitive Instrument Temperature Range Operating Electronics 40 to 113 F 5 to 45 C Operating Probe 14 to 140 F 10 to 60 C Storage 4 to 140 F 20 to 60 C Instrument Operating Conditions Altitude up to 4000 meters Relative humidity up to 80 RH non condensing Pollution degree 1 in accordance with IEC 664 Transient over voltage category II Data Storage Capabilities Range 12 700 samples and 100 test IDs one sample can contain fourteen measurement types Logging Interval Intervals 1 second to 1 hour Time Constant Intervals User selectable External Meter Dimensions 3 3 in x 7 0 in x 1 8 in 8 4 cm x 17 8 cm x 4 4 cm Meter Probe Dimensions Probe Length 7 0 in 17 8 cm Probe Diameter of Tip 0 75 in 19 0 mm 13 Meter Weight Weight With Batteries 0 6 lbs 0 27 kg Power Requirements Four AA size batteries included or AC adapter optional 9 VDC 300 mA 4 18 watts input voltage and frequency vary depending on which adapter is used l Accuracy with instrument case at 77 F 25 C add uncertainty of 0 05 F F 0 05 C C for change in instrument temperature Accuracy with probe at 77 F 25 C Add uncertainty of 0 1 RH F 0 1 RH C for change in probe temperature Includes 1 hysteresis 14 Appendix A UK Tel 44 149 4 459200 E mail tsiuk tsi com Website www tsiinc co uk France Tel 33 491 95 2190 E mail tsifrance t
7. les until a set period of time has passed e Auto save Cont Key and Cont time modes have the following additional Log Settings Mode Log Settings Auto save Log Interval Cont key Log Interval Cont time Log Interval Test Length e Pressing the AW keys simultaneously will lock the keypad to prevent unauthorized adjustments to the instruments To unlock the keypad press the A Y keys simultaneously Delete Data Use this to delete all data delete test or delete sample Memory This option displays the memory available Delete All under Delete Data will clear memory and reset the memory available APPLICATIONS You can choose Outside Air in the Applications menu After choosing this application take measurements or enter data for each line LogDat2 Downloading Software The Model 7425 comes with special software called LogDat2 Downloading Software which is designed to provide you with maximum flexibility and power To install this software on your computer follow the instructions on the label of the LogDat2 CD ROM Operation 7 To download data from the Model 7425 connect the supplied computer interface USB cable to the Model 7425 and to a computer USB port Then run the LogDat2 downloading software Within the LogDat2 software either select the tests to be downloaded or double click on a test to open it 8 Chapter 3 Chapter 4 Maintenance The Model 7425 requires very little maintenance to keep it perfo
8. ooocccononiccconociccccnnonnnccanancnnnnnons CHAPTER 4 MAINTENANCE uussuunessnenennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 9001 2000 ili Chapter 1 Unpacking and Parts Identification Carefully unpack the instrument and accessories from the shipping container Check the individual parts against the list of components below If anything is missing or damaged notify TSI immediately 1 2 3 4 5 Carrying case Instrument USB cable CD ROM with data analysis software Calibration collar Chapter 2 Setting up Supplying Power to the Model 7425 TH CALc Thermohygrometer The Model 7425 can be powered in one oftwo ways four size AA batteries or the optional AC adapter Installing the Batteries Insert four AA batteries as indicated by the diagram located on the inside of the battery compartment The Model 7425 is designed to operate with either alkaline or NiMH rechargeable batteries although it will not recharge NiMH batteries Battery life will be shorter if NiMH batteries are used Carbon zinc batteries are not recommended because of the danger of battery acid leakage Using the Optional AC Adapter When using the AC adapter the batteries if installed will be bypassed Be sure to provide the correct voltage and frequency which is marked on the back of the AC adapter The AC adapter is not a battery charger Using The Probe The sensing probe relies on the diffusion of air For best results
9. r common problems encountered with the Model 7425 If your symptom is not listed or if none of the solutions solves your problem please contact TSL Table 5 1 Troubleshooting the Model 7425 Possible Causes Corrective Action No Display Low or dead batteries Replace batteries or plug in AC adapter Dirty battery contacts Clean the battery contacts Instrument Error Memory is full Download data if desired message appears then DELETE ALL memory Fault in instrument Factory service required on instrument Temp initially Temperature sensor is Allow sufficient time for reads high or low still adjusting to the temperature to temperature stabilize Humidity reading Probe exposed to intense Shade the probe while near zero or not light taking samples believable WARNING Remove the probe from excessive temperature immediately excessive heat can damage the sensor Operating temperature limits can be found in Appendix A Specifications Appendix A Specifications Specifications are subject to change without notice Temperature Range 32 to 140 F 0 to 60 C Accuracy 1 0 F 0 6 C Resolution 0 1 F 0 1 C Response time 30 seconds 90 of final value air velocity at 2 m s Display units C or F user selectable Type Thermistor Humidity Range 5 to 95 RH Accuracy 3 RH includes 1 hysteresis Resolution 0 1 RH Response time 20 seconds for 63 of fina
10. rming well Recalibration To maintain a high degree of accuracy in your measurements we recommend that you return your Model 7425 to TSI for annual recalibration Please contact one of TSI s offices or your local distributor to make service arrangements and to receive a Return Material Authorization RMA number To fill out an online RMA form visit TSI s website at http service tsi com U S amp International TSI Incorporated 500 Cardigan Road Shoreview MN 55126 3996 Tel 800 874 2811 651 490 2811 Fax 651 490 3824 The Model 7425 can also be recalibrated in the field using the CALIBRATION menu These field adjustments are intended to make minor changes in calibration to match a user s calibration standards The field adjustment is NOT intended as a complete calibration capability For complete multiple point calibration and certification the instrument must be returned to the factory Cases If the instrument case or storage case needs cleaning wipe it off with a soft cloth and isopropyl alcohol or a mild detergent Never immerse the Model 7425 If the enclosure of the Model 7425 or the AC adapter becomes broken it must be replaced immediately to prevent access to hazardous voltage Storage Remove the batteries when storing the unit for more than one month to prevent damage due to battery leakage Chapter 5 Troubleshooting Table 5 1 lists the symptoms possible causes and recommended solutions fo
11. shall have no liability in connection with goods which are incorporated into other products or equipment or which are modified by any person other than Seller The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE TO THE EXTENT PERMITTED BY LAW THE EXCLUSIVE REMEDY OF THE USER OR BUYER AND THE LIMIT OF SELLER S LIABILITY FOR ANY AND ALL LOSSES INJURIES OR DAMAGES CONCERNING THE GOODS INCLUDING CLAIMS BASED ON CONTRACT NEGLIGENCE TORT STRICT LIABILITY OR OTHERWISE SHALL BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE PRICE OR AT THE OPTION OF SELLER THE REPAIR OR REPLACEMENT OF THE GOODS IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES SELLER SHALL NOT BE RESPONSIBLE FOR INSTALLATION DISMANTLING OR REINSTALLATION COSTS OR CHARGES No Action regardless of form may be brought against Seller more than 12 months after a cause of action has accrued The goods returned under warranty to Seller s factory shall be at Buyer s risk of loss and will be returned if at all at Seller s risk of loss Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND LIABILITY which contains the complete and exclusive limited warranty of Seller This LIMITATION OF WARRANTY AND LIABILITY may not be amended modified or its terms waived
12. si com Website www tsiinc fr Germany Tel 49 241 523030 E mail tsigmbh tsi com Website www tsiinc de Sweden Tel 46 8595 13230 E mail tsiab tsi com Website www tsi se India Tel 91 80 41132470 E mail tsi india tsi com China Tel 86 10 8260 1595 E mail tsibeijing tsi com ER 5081 2000 TSI Incorporated 500 Cardigan Road Shoreview MN 55126 U S A USA Tel 1 800 874 2811 E mail info tsi com Website www tsi com q Contact your local TS Distributor or visit our website www tsi com for more detailed specifications P N 1980570 Rev C Copyright 2007 by TSI Incorporated Printed in U S A
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