background image

16

 

 16

6.  Enter the filename under which you will store 

the data. 

7. Choose 

the 

OK

 

key. 

Serial Communication Through 
Windows 95 

 

Click on 

Hyperterminal.exe

 located in the 

accessories menu. 

 

If a box comes up requesting modem 
installation, click 

No

 

Enter a name (Alnor) and choose an icon for 
meter downloading to the PC, click 

OK

 

Connect using 

Com1

 connection, click 

OK

 

Set port settings under 

Com1 Properties

 

to 

1200BPS, 8 data bits, no parity, stop bits 1, 
and 

Flow Control

 to 

None

, click 

OK

 

Click 

File 

and choose 

Properties

 

Click on 

Settings

, choose 

ASCII

 

set up. 

Verify checkmark for 

Terminal Keys

Emulation

 

to 

Auto Detect

, and 

Backscroll Buffer Lines

 to 

500

 

Place a check mark under 

ASCII Receiving

 

in the boxes marked 

Append Line Feeds

 

To Incoming Line Ends

 and 

Wrap Lines 

That Exceed Terminal Width

, click 

OK

 

Click 

O

K

 

again to exit 

Properties

 

Hyperterminal

 

is now ready to receive 

information from the meter. 

 

Save terminal configuration for future use. 

Appendix D: 

Pressure to Velocity Conversion Charts 

The AXD 550 MicroManometer converts pressure 
readings to velocity using the formula for standard 
conditions: 

V

(fpm)

 = 4005

P

 

Pressure in inches H

2

V

(m/s)  

= 1.29

P

 

Pressure in Pa 

Please note that for small pressure readings, an 
increment in pressure can cause large steps in 
velocity, but at larger readings, the steps in  

velocity are much less pronounced as a percentage 
of reading. A Micro-Manometer should not be 
used with a pitot tube at very low differential 
pressures to measure velocity, because resolution 
errors will be large. 

The following graphs show approximate velocities 
for certain differential pressures in the range0–
0.10 inches H

2

0 (0–25 Pa).  

   

 

Содержание ALNOR MicroManometer AXD 550

Страница 1: ...AXD 550 MicroManometer OWNER S MANUAL...

Страница 2: ...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 A...

Страница 3: ...items to select any of the following press 7 Using the AXD 550 8 Basic Functions 8 To Change Units 8 To Hold a Reading For storage or printing 9 Measurement Modes 9 Pressure Selection 9 Velocity Selec...

Страница 4: ...ication Through Windows 95 16 Appendix D Pressure to Velocity Conversion Charts 16 Appendix E Correction Factors for Non Standard Conditions 17 Method 1 17 Method 2 17 Method 3 17 AXD 550 Density Corr...

Страница 5: ...can hold 100 readings of pressure velocity or volume For convenience memory can be organized into sections called pages All data is saved by the instrument s own battery powered system Readings can al...

Страница 6: ...unit off after a twenty minute period of keyboard inactivity To disable this feature follow the instructions in the menu selections section of this manual Attach hoses to the pressure ports at the top...

Страница 7: ...ions the AXD 550 will read small pressure changes Clearing the Memory If this is the first time you are using the AXD 550 clear the memory before using the instrument Clearing the memory is done with...

Страница 8: ...he RUN mode If the instrument is in any other mode pressing this key will exit that function and go back to the RUN mode without making any changes VOL The VOL key prepares the AXD 550 for air volume...

Страница 9: ...es and menu items After each entry appears on the display as the AXD 550 stores new information Menu Selections Pressing the MENU key activates the main menu Use the and keys to scroll through the ava...

Страница 10: ...he key scroll to or Press the key Press the ON OFF key to return to the RUN mode Note the serial port must be when interfacing to a computer Keep the port when not in use to conserve batteries tc allo...

Страница 11: ...rsion charts Volume Selection or reviewing the latest area Air volume measurement is achieved by multiplying a velocity reading by an area When you press the VOL key the menu appears on the display an...

Страница 12: ...ld the ON OFF key until appears then press the ON OFF key to return to the RUN mode To erase stored data Press the CLR key until appears Push the or key until appears Press to clear the memory Note Ke...

Страница 13: ...computer Make sure the serial port on the meter is enabled Review the stored date There must be data stored for printing If any of these problems persist call TSI for assistance Maintenance Periodic m...

Страница 14: ...s able to calculate averages automatically thus eliminating the need for additional calculations Refer to AVE on page 6 of this manual Traversing a Round Duct Using the log Tchebycheff method the duct...

Страница 15: ...ing the log Tchebycheff method Number of points or traverse lines per side Position relative to inner wall 5 0 074 0 288 0 500 0 712 0 926 8 0 061 0 235 0 437 0 563 0 765 0 939 10 0 053 0 203 0 366 0...

Страница 16: ...ll be used In any circumstance if the new value is more than 50 different than the old value 100 of the new value will be used This override percentage allows the meter to quickly attain a new value w...

Страница 17: ...l type in GEE1 then press the ENTER key Notice keep typing the G until it reappears on the terminal screen then continue typing EE1 Second method At the terminal and after following the steps under To...

Страница 18: ...eeds To Incoming Line Ends and Wrap Lines That Exceed Terminal Width click OK Click OK again to exit Properties Hyperterminal is now ready to receive information from the meter Save terminal configura...

Страница 19: ...te pressure temperature and relative humidity record the differential pressure from the AXD 550 the absolute pressure the temperature and the relative humidity at the measurement location Compute the...

Страница 20: ...1 29 1 32 1 35 250 1 15 1 18 1 20 1 22 1 25 1 27 1 29 1 31 1 34 1 36 1 40 300 1 20 1 22 1 24 1 27 1 29 1 31 1 34 1 36 1 39 1 41 1 44 350 1 24 1 27 1 29 1 31 1 34 1 36 1 39 1 40 1 43 1 46 1 49 400 1 27...

Страница 21: ...cy approximates the resolution e g differential pressure of 01 inches H2O accuracy statement is 01 x 01 01 or 0101 inches H2O or reading error is 101 of reading As differential pressure increases the...

Страница 22: ..._______________________________________________________________ Where Purchased _________________________________________________________________________ Describe Malfunction _________________________...

Страница 23: ...urrounded by at least 2 inches 5 cm of suitable shock absorbing material Include a purchase order that clearly shows the instrument model number and serial number a contact name phone fax number and R...

Страница 24: ...___________________________________________________________________________________ _______________________________________________________________________________________ ____________________________...

Страница 25: ...gh 4 digit 7 segment LCD no backlight 15 inch high 2 1 2 digit memory indicator Data Memory One hundred memory locations are available to store units of measure and pressure velocity or volume reading...

Страница 26: ...Cardigan Road Shoreview MN 55126 USA Toll Free 800 424 7427 Telephone 651 490 2811 September 2002 Fax 651 490 3824 Printed in USA www alnor com Part No 116 159 128 Rev 13 customerservice alnor com Co...

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