TSI Instruments VelociCalc 9555 Assembly instructions

135 Bernice Drive, Bensenville IL 60106-3366
Toll Free [phone] Phone [phone]
Fax [phone]
www.raecorents.com
Nationwide rental of industrial hygiene and safety instrumentation, from a service that treats you right.
©2014 RAECO Rents LLC, Bensenville IL. All rights reserved.
TSI VelociCalc 9555/9565 Quick Tips for Pressure Testing
For complete documentation, see http://mobibrix.com/0DKVGG
1. Probe Sampling
a. Connect probe to bottom of instrument, and turn
the instrument on
b. To change the readings displayed on screen...
1. Select [Menu] softkey
2. Select Display Setup
3. Use the softkeys to select display values
(Primary sets value to a larger font to make it
more visible to the user)
a. 964 probe – Flow, Temperature, and %rH set to ON
b. 982 Probe – CO, CO2, Temperature and %rh set to ON
c. 985 Probe – VOC and Temperature set to ON
d. 995 Probe – Flow and Temperature set to ON
4. Press [Enter] to save changes.
c. Set up data logging values
1. Select [Menu] softkey
2. Select Data Logging
3. Select Measurements
4. Select values to be logged by instrument
a. ON = Measurement is logged to memory
b. Display = Measurement will be logged if it is displayed on the main screen
c. OFF = Unit will not save data for that value
d. Hold probe to take samples
e. [NEXT TEST] key saves data up to the point it is pressed and begins a new session

135 Bernice Drive, Bensenville IL 60106-3366
Toll Free [phone] Phone [phone]
Fax [phone]
www.raecorents.com
Nationwide rental of industrial hygiene and safety instrumentation, from a service that treats you right.
©2014 RAECO Rents LLC, Bensenville IL. All rights reserved.
2. Differential Pressure Testing
a. Connect the two lengths of neoprene tubing to the positive and
negative ports at the top of the instrument
b. Place the free end of the positive port tubing in the area being
tested
c. Place the free end of the negative port tubing in the control/ambient zone
1. A positive reading means the variable/sample (+)zone is higher pressure than the
control/ambient (-)
2. A negative reading means the control/ambient zone (-) is higher pressure than the
variable/sample (+)zone
3. Static Pressure Testing
a. Connect one length of neoprene tubing to the positive port at the top of the instrument
b. Keep the negative (-) port open to measure ambient conditions
c. Attach the static pressure tip to the tubing on the positive (+)port
d. Point the static pressure tip directly into airflow to get an accurate reading
1. Positive reading means the pressure in the duct is higher than the measured ambient
conditions
2. Negative reading means the pressure in the duct is lower than the measured ambient
conditions
For complete documentation, see http://mobibrix.com/0DKVGG