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TSI Incorporated VELOCICALC Plus 8360, Operation And Service Manual

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 Model 

8360/8382/8383/8388 

 
 

V

ELOCI

C

ALC

 Plus 

 
 

Air Velocity Meters 

 
 
 

Operation and Service 

 Manual 

 

 

September 1998 

P/N 1980253 Rev C 

 

Summary of Contents for VELOCICALC Plus 8360

Page 1: ...Model 8360 8382 8383 8388 VELOCICALC Plus Air Velocity Meters Operation and Service Manual September 1998 P N 1980253 Rev C ...

Page 2: ......

Page 3: ...98 P N 1980253 Rev C SHIP TO MAIL TO TSI Incorporated TSI Incorporated 500 Cardigan Road P O Box 64394 Shoreview MN 55126 3996 St Paul MN 55164 0394 USA USA U S INTERNATIONAL Sales and Customer Service Sales and Customer Service 800 777 8356 651 490 2711 1 651 490 2711 Fax Fax 651 490 2874 1 651 490 2874 ...

Page 4: ... LIEU OF all other warranties and is subject to the conditions and LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE THE EXCLUSIVE REMEDY OF THE USER OR PURCHASER AND THE LIMIT OF THE LIABILITY OF SELLER FOR ANY AND ALL LOSSES INJURIES OR DAMAGES IN CONNECTION WITH THIS PRODUCT INCLUDING CLAIMS BASED ON CONTRACT NEGLIGENCE S...

Page 5: ...Measuring Velocity 5 Measuring Temperature 5 Measuring Pressure 6 Zeroing Pressure 6 Measuring Humidity Model 8360 and 8388 Only 6 Dew Point Function Model 8360 and 8388 Only 6 Flow Rate Function 7 Flow Rate Calculated Using Velocity and Duct Area 7 Entering Shape and Size 7 Flow Rate Calculated Using Pressure and Flow Factor Models 8382 8383 and 8388 Only 8 Entering Flow Factor 8 Time Constant Fu...

Page 6: ...ication Notes Constant Temperature Thermal Anemometry Theory TI 105 Traversing a Duct to Determine Average Air Velocity or Volume TI 106 Applications Using the VELOCICALC Plus to Measure Pressure TI 107 VELOCICALC Serial Interface Connections TI 108 To obtain any of the listed Application Notes contact TSI at U S 800 777 8356 651 490 2711 Fax 651 490 2874 International 1 651 490 2711 Fax 1 651 490...

Page 7: ...st of components Qty Item Description Part model 1 Model 8360 VELOCICALC Plus or 8360 Model 8382 VELOCICALC Plus or 8382 Model 8383 VELOCICALC Plus Articulating Probe or 8383 Model 8388 VELOCICALC Plus 8388 1 Carrying Case 800277 4 AA Alkaline batteries 1208013 1 AC Adapter Optional 115 V NEMA 5 230 V European CEE 7 16 230 V Great Britain 240 V Australian 2613033 2613078 800169 2613105 1 Operation...

Page 8: ...Chapter 1 2 Parts Identification 3 2 4 1 6 5 Figure 1 1 VELOCICALC 1 On Off Switch 4 Probe Mounting Clips 2 Display 5 Pressure Measurement Ports 3 Function Keys 6 Battery Access Cover ...

Page 9: ... Using the AC Adapter When using the AC adapter the batteries if installed will be bypassed The AC adapter is not a battery charger Selecting the Display Units The VELOCICALC is capable of displaying the measured values in several different measurement units The choices of measurement units are shown in Table 2 2 Table 2 2 Choices of Measurement Units Velocity Temperature Dew Point Flow Rate Press...

Page 10: ...e other hand Do not hold the cable while extending the probe as this prevents the probe from moving Retracting The Probe To retract the probe hold the handle in one hand while pushing on the probe tip with the other hand If you feel the probe antenna binding pull gently on the probe cable until the smallest antenna section is retracted Collapse the rest of the antenna by pressing the probe tip Whe...

Page 11: ... on it goes through a preprogrammed power up sequence that includes an internal self check First all displayable items will appear for a few seconds If a problem is detected the display will light CAL to indicate that it should be returned for servicing and calibration When the VELOCICALC completes the internal self check it will display the approximate percentage of battery life remaining This fe...

Page 12: ...The readings will be in units of percent relative humidity RH The reading may need time to stabilize if the ambient conditions have recently changed In order to see if the humidity reading has stabilized extend the probe and gently wave it back and forth or place it in a location where there is a sufficient quantity of moving air while checking the display for an upward or downward trend in the re...

Page 13: ...LC will request entry of the shape by alternately flashing the circle and rectangle and pressure units if DIP switch 6 is ON on the display If shape and size have been entered the VELOCICALC will go directly to displaying flow rate Press the SHAPE key to select the shape of the area rectangular square or circular to measure Each time the SHAPE key is pressed the shape will change back and forth be...

Page 14: ... area To zero the pressure transducer while in this measurement mode press and hold the PRESSURE key The pressure will zero and the VelociCalc will return to flow rate from pressure measurement mode Entering Flow Factor Press the FLOWRATE key to put the VELOCICALC in flow rate mode The VELOCICALC will prompt you to enter the shape size or flow factor if this has not been done since the instrument ...

Page 15: ... key is pressed the readings in the store buffer are divided by the number of stored readings to get the average The CLEAR key is used to clear out the store buffer in order to start taking a new average Store Function Press and hold the STORE key to store the currently displayed measurement The display will show STORE and the number of stored data points that are in memory for about two seconds a...

Page 16: ...d The next time the AVERAGE key is pressed the additional values are averaged with those already accumulated Clear Function Press the CLEAR key to erase the stored value in the buffer of the currently active function Pushing the CLEAR key in one function will not affect the values stored in other buffers However velocity and flow rate from area use the same buffer so clearing velocity will also cl...

Page 17: ...lso for the 8383 be careful not to allow water to enter the articulating probe joint Caution Never use heat to dry the probe Permanent damage to the sensor could result Recalibration To maintain a high degree of accuracy in your measurements TSI recommends that you return your instrument for annual recalibration For a nominal fee we will recalibrate the unit and return it to you with a certificate...

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Page 19: ...place or recharge batteries Wrong AC adapter Replace with the correct AC adapter Low AC line voltage Correct the AC line voltage or use batteries Dirty battery contacts Clean the battery contacts Temperature initially reads high Temperature sensor is still warm from velocity mode Allow about 30 seconds before reading temperature Display reads ERR You are trying to enter more than 255 readings Read...

Page 20: ... temperature and wet bulb temperature when comparing VELOCICALC humidity readings to sling psychrometer readings Dew point temperature and wet bulb temperature are not the same thing On the psychometric chart used with a sling psychrometer dew point temperature is a flat horizontal line wet bulb temperature is a straight line angling downwards from the left dry bulb temperature is a straight verti...

Page 21: ...0 to 200 F 17 8 to 93 3 C 22 to 194 F 30 to 90 C Relative Humidity Range Accuracy 0 to 95 3 rh3 N A N A Dew point Range 5 to 120 F 15 to 49 C N A Static Differential Pressure Range4 Accuracy5 10 00 to 10 00 inches H2O 2 500 to 2 500 kPa or 20 00 to 20 00 mm Hg 0 5 of rdg 0 01 in H2O 0 002 kPa or 0 02 mm Hg Same Same Volumetric Flow Rate 0 2 to 4 50 000 ft3 min 0 0424 to 1 170 000 m3 hr or 0 1 to 3...

Page 22: ... 5 kg Same Printer Interface Type Serial BAUD Rate 1200 Same Power Four AA size NiCd rechargeable or Alkaline Batteries included or AC adapter Same 1 Temperature compensated over an air temperature range of 40 to 150 F 5 to 65 C 2 Accuracy with instrument case at 77 F 25 C Add uncertainty of 0 05 F F 0 03 C C for change in instrument temperature 3 Accuracy with probe at 77 F 25 C Add uncertainty o...

Page 23: ...te l s m3 hr 3 Pressure in H2O kPa and mm Hg 4 Pressure kPa mm Hg 5 Temperature Degrees Fahrenheit F Degrees Celsius C 6 Flow Rate 8382 8383 8388 only Flow rate from velocity and area Flow rate from pressure and flow factor or from veloctiy and area 7 Reserved Reserved 8 Beep Beep Disabled Beep Enabled The ON position is away from the batteries and OFF is towards the batteries Always leave DIP swi...

Page 24: ...18 Appendix B DIP SWITCH ON OFF 1 8 Figure B 1 DIP Switch Location ...

Page 25: ...seful measure of airflow because it defines the heat carrying capacity of the air Actual velocity is the velocity at which a microscopic particle of dust would be traveling if it were in the air stream In some instances actual air velocity rather than standard velocity may be of interest To obtain the value for actual velocity multiply your standard velocity by the following density correction fac...

Page 26: ... take a measurement and the display reads 1200 feet per minute ft min ActualVelocity 1200 460 55 460 70 14 7 14 24 12037 ft min Example No 2 You need to measure the actual velocity in a plenum The air pressure is 99 4 kPa and the temperature is 27 C The display reading is 2 3 meters per second m s ActualVelocity 2 3 273 27 273 211 101 99 2 39 4 4 m s ...

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