VELOCICALC® AIR VELOCITY METER MODEL 9535/9535-AOPERATION AND SERVICE MANUALP/N 1980563, REVISION J NOVEMBER 2020
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CopyrightTSI Incorporated / 2007-2020 / All rights reserved.AddressTSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USAFax No. (651) 490-3824LIMITATION OF WARRANTY AND LIABILITY (effective February 2015)(For country-specific terms and conditions outside of the USA, please visit www.tsi.com.)Seller warrants the goods, excluding software, sold hereunder, under normal use and service as described in the operator’s manual, to be free from defects in workmanship and material for 24 months, or if less, 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 and exceptions: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. Pumps are warranted for hours of operation as set forth in product or operator’s manuals;c. 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;d. 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;e. This warranty does not cover calibration requirements, and the seller warrants only that the instrument or product is properly calibrated at the time of its manufacture. Instruments returned for calibration are not covered by this warranty;f. This warranty is VOID if the instrument is opened by anyone other than a factory authorized service center with the one exception where requirements set forth in the manual allow an operator to replace consumables or perform recommended cleaning;g. This warranty is VOID if the product has been misused, neglected, subjected to accidental or intentional damage, or is not properly installed, maintained, or cleaned according to the requirements of the manual. Unless specifically authorized in a separate writing by Seller, Seller makes no warranty with respect to and 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 A PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE. WITH RESPECT TO THE SELLER’S BREACH OF THE IMPLIED WARRANTY AGAINST INFRINGEMENT, SAID WARRANTY IS LIMITED TO CLAIMS OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY OR INDUCED INFRINGEMENTS. BUYER’S EXCLUSIVE REMEDY SHALL BE THE RETURN OF THE PURCHASE PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT SELLER’S OPTION REPLACEMENT OF THE GOODS WITH NON-INFRINGING GOODS.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 THE CASE OF SOFTWARE, THE SELLER WILL REPAIR OR REPLACE DEFECTIVE SOFTWARE OR IF UNABLE TO DO SO, WILL REFUND THE PURCHASE PRICE OF THE SOFTWARE. IN NO EVENT SHALL THE SELLER BE LIABLE FOR LOST PROFITS, BUSINESS INTERRUPTION, OR ANY SPECIAL, INDIRECT, 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, 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 the Customer Service department at (800) 680-1220 (USA) or (1) 651-490-2860 (International).TrademarksTSI, the TSI logo, and VelociCalc are registered trademarks of TSI Incorporated in the United States and may be protected under other country’s trademark registrations. LogDat2 is a trademark of TSI Incorporated.
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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. If anything is missing or damaged, notify TSI® Incorporated immediately.
- Carrying case
- Instrument
- USB cable
- CD-ROM with downloading software
Chapter 2Setting-up
Supplying Power to the Model 9535/9535-A
The TSI® Model 9535/9535-A VelociCalc® Air Velocity Meter is powered with four size AA batteries.
Installing the Batteries
Insert four AA batteries as indicated by the diagram located on the inside of the battery compartment. The Model 9535/9535-A 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 will not recharge the batteries.
Using the Telescoping Probe
The telescoping probe contains the velocity and temperature sensors. When using the probe, make sure the sensor window is fully exposed and the orientation dimple is facing upstream.NOTEFor temperature measurements, make sure that at least 3 inches (7.5 cm) of the probe is in the flow to allow the temperature sensor to be in the air stream.
Extending the Probe
To extend the probe, hold the handle in one hand while pulling on the probe tip with the other hand. Do not hold the cable while extending the probe as this prevents the probe from extending.
Retracting the Probe
To retract the probe, hold the handle in one hand while pulling gently on the probe cable with the other hand.
Connecting to a Computer
Use the Computer Interface USB Cable provided with the Model 9535/9535-A to connect the instrument to a computer for downloading stored data.For more information on how to download stored data see Chapter 3 section titled LogDat2TM Downloading Software.
CAUTIONThis symbol is used to indicate that the data port of the Model 9535/9535-A is NOT intended for connection to a public telecommunications network. Connect the USB data port only to another USB port.
Chapter 3 Operation
Keypad Functions
| ON/OFF Key | Press to turn the Model 9535/9535-A 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 ( ) Keys |
Press to scroll through choices while setting a parameter. |
 (Enter) Key |
Press to accept a value or condition. |
Arrow (  ) and Menu Soft Keys |
Press arrow keys to change choices while setting a parameter. Press the Menu soft key to select the menu selections, which are Display Setup, Settings, Flow Setup, Actual/Std Set up, Data Logging, and 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”. |
DISPLAY SETUPThe display setup menu is where you will set up the desired parameters to be displayed on the running screen. With a parameter highlighted you can then use the ON soft key to having it show up on the running screen or select the OFF soft key to turn off the parameter. Use the 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
The 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 soft keys to adjust the settings for each option and use the key to accept settings.
FLOW SET UP
In Flow Setup mode, there are 4 types: Round Duct, Rectangle Duct, Duct Area and Horn. Use the soft keys to scroll through the types and then press the key to accept the desired type. To change the value, highlight the Enter Settings option and press the key. Use the instructions below to change the value of the type that you selected.NOTEThe horn numbers are the models of the horns. For example, 100 refers to a horn model number AM 100. Only horns with Model numbers as follows can be used with this function: AM 100, AM 300, AM 600, and AM 1200. If a horn model number is chosen, the instrument will return to measuring mode and use a preprogrammed curve to calculate flow rate from velocity.
ACTUAL/STANDARD SETUP
Choose Actual/Standard measurements and parameters in the Act/Std Setup menu. Within this menu, the user can also select Standard Temperature, Standard Pressure and a source for the actual temperature. The actual barometric pressure must be entered to convert air velocity and volume measurements to actual conditions.
DATA LOGGING
Measurements to be logged are independent of measurements on the display, and must therefore be selected under DATA LOGGING Measurements.
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.
LogDat2TM Downloading Software
The TSI® Model 9535/9535-A comes with special software called LogDat2TM 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 LogDat2TM CD-ROM.To download data from the Model 9535/9535-A, connect the supplied computer interface USB cable to the Model 9535/9535-A and to a computer USB port. Then run the LogDat2TM software. Within the LogDat2TM software, either select the tests to be downloaded or double-click on a test to open it.
Chapter 4 Maintenance
The Model 9535/9535-A requires very little maintenance to keep it performing well.Recalibration To maintain a high degree of accuracy in your measurements, we recommend that you return your Model 9535/9535-A to TSI® Incorporated for annual recalibration. Please contact one of TSI’s offices or your local distributor to make service arrangements and to receive a “Service Request” number. To fill out an online “Service Request” form, visit TSI’s website at tsi.com/service.U.S. & International TSI Incorporated 500 Cardigan Road Shoreview MN 55126-3996 Tel: (800) 874-1220(651) 490-2860 Fax: (651) 490-3824
The Model 9535/9535-A 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 9535/9535-A. If the enclosure of the Model 9535/9535-A 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 list the symptoms, possible causes, and recommended solutions for common problems encountered with the Model 9535/9535-A. If your symptom is not listed, or if none of the solutions solves your problem, please contact TSI® Incorporated.Table 5-1: Troubleshooting the Model 9535/9535-A
| Symptom | Possible Causes | Corrective Action |
| No Display | Unit is not turned on | Switch unit on. |
| Low or dead batteries | Replace batteries or plug in an AC adapter. | |
| Dirty battery contacts | Clean the battery contacts. | |
| Velocity reading fluctuates unstable | Fluctuating flow | Reposition probe in less-turbulent flow or use longer time constant. |
| No response to keypad | Keypad locked out | Unlock the keypad by pressing keys simultaneously. |
| Instrument Error message appears | Memory is full | Download data if desired, then DELETE ALL memory. |
| Fault in instrument | Factory service required on the instrument. |
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.
Velocity:Range: Accuracy1&2: 0 to 6000 ft/min (0 to 30 m/s)Resolution: ±3% of reading or ±3 ft/min (±0.015 m/s), whichever is greater 1 ft/min (0.01 m/s)
Duct Size:Range: 1 to 250 inches in increments of 0.1 in. (1 to 635 cm in increments of 0.1 cm)
Volumetric Flowrate:Range: The actual range is a function of actual velocity, pressure, duct size, and K factorTemperature:Range: 0 to 200°F (-18 to 93°C)Accuracy3: ±0.5°F (±0.3°C)Resolution: 0.1°F (0.1°C)Instrument Temperature Range:Operating (Electronics): 40 to 113°F (5 to 45°C)Operating (Probe): 0 to 200°F (-18 to 93°C)Storage: -4 to 140°F (-20 to 60°C)
Instrument Operating Conditions When Using the Optional AC Adapter:Altitude up to 4000 metersRelative humidity up to 80% RH, non-condensingPollution degree 1 in accordance with IEC 664Transient overvoltage category II
Data Storage Capabilities:
Range: 12,700+ samples and 100 test IDs (one sample can contain fourteen measurement types)Time Constant:User-selectable
Response Time:Velocity: 200 msecTemperature: 2 minutes (to 66% of final value)
External Meter Dimensions:3.3 in. 7.0 in. 1.8 in. (8.4 cm 17.8 cm 4.4 cm)
Meter Probe Dimensions:
Probe length: 40 in. (101.6 cm)Probe diameter of tip: 0.28 in. (7.0 mm)Probe diameter of base: 0.51 in. (13.0 mm)
Articulating Probe Dimensions:Articulating section length: 6.0 in. (15.24 cm)Diameter of articulating knuckle: 0.38 in. (9.5 mm)
Meter Weight:Weight with batteries: 0.6 lbs (0.27 kg)
Power Requirements:Four AA-size batteries (included) or AC adapter 9 VDC, 300 mA min.
- Temperature-compensated over an air temperature range of 40 to 150°F (5 to 65°C).
- The accuracy statement of ±3.0% of reading or ±3 ft/min (±0.015 m/s), whichever is greater, begins at 30 ft/min through 6000 ft/min (0.15 m/s through 30 m/s).
- Accuracy with instrument case at 77°F (25°C), add the uncertainty of 0.05°F/°F (0.03°C/°C) for change in instrument temperature.
Notes ___________________________________________________________________________________________________________________________________________
UNDESTASTADING, ACCELERATED
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P/N 1980563 Rev J©2020 TSI IncorporatedPrinted in the U.S.A.
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