TSI Incorporated VelociCalc Plus 8384, VelociCalc Plus 8384A, VelociCalc Plus 8385, VelociCalc Plus 8385A, VelociCalc Plus 8386 Operation And Service Manual

ENERGY AND COMFORT

Indoor Air Quality

VELOCICALC® Plus

Air Velocity Meter

Models 8384/8384A/8385/

8385A/8386/8386A

Operation and Service Manual

1980321, Revision J

July 2010

Copyright

TSI Incorporated / August 2000–2010 / All rights reserved.

Address

TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA

Fax No.

[phone]

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 shall have no liability in connection with, goods which are
incorporated into other products or equi pment, 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, 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 TSI's
Customer Service department at [phone] (USA) and 1 [phone] (International).

CONTENTS

Chapters

1. UNPACKING AND PARTS IDENTIFICATION ............................... 1

Parts Identification .......................................................................... 2

2. SETTING-UP ................................................................................... 3

Supplying Power to the VELOCICALC Plus ...................................... 3

Installing the Batteries ............................................................... 3

Using the Optional AC Adapter ................................................. 3

Selecting the Display Units ............................................................. 3

Using The Telescoping Probe ........................................................ 3

Extending The Probe ................................................................. 4

Retracting The Probe ................................................................ 4

Articulating Probe (Models 8384A/8385A/8386A Only) ............ 4

Changing the Real-Time Clock ....................................................... 4

Changing the Baud Rate ................................................................ 4

Connecting the Optional Portable Printer ....................................... 5

Connecting to a Computer .............................................................. 5

3. OPERATION .................................................................................... 7

Keypad Functions ........................................................................... 7

Common Terms .............................................................................. 7

ON/OFF Key...................................................................................... 7

Arrow () Keys ........................................................................... 8

ENTER Key ....................................................................................... 8

Backlight Switch .............................................................................. 8

VELOCITY/FLOWRATE Key ................................................................. 8

PRESSURE (zero) Key (Models 8385/8385A/8386/8386A Only) ..... 9

TEMPERATURE Key .......................................................................... 9

HUMIDITY Key (Model 8386/8386A Only) ...................................... 10

THERMAL/PITOT Key (Models 8385/8385A/8386/8386A Only) ...... 10

ACTUAL/STANDARD Key .................................................................. 10

SAMPLE INTERVAL Key ................................................................... 10

SAMPLE (options) Key .................................................................... 11

Discrete Data Logging (Single Point Measurements) ............. 11

Continuous Data Logging (Multiple Readings Over Time) ...... 11

Setting Data Storage Options .................................................. 11

NEXT TEST (clear) Key ................................................................... 13

STATISTICS (review data) Key ........................................................ 13

To View Statistics .................................................................... 13

To Review Data ....................................................................... 13

HEAT FLOW Key (Model 8386/8386A Only) ................................... 14

Printing Data Using the Portable Printer ...................................... 15

Downloading Data to A Computer ................................................ 15

Data Acquisition (Polling) .............................................................. 16

4. MAINTENANCE ............................................................................. 17

Recalibration ................................................................................. 17

Cases ............................................................................................ 17

Storage .......................................................................................... 17

5. TROUBLESHOOTING................................................................... 19

Appendixes

A. SPECIFICATIONS ........................................................................ 21

B. DIP SWITCH SETTINGS .............................................................. 25

Qty

Item Description

Model

1

Model 8384 V

Plus or

8384

Model 8384A V

Plus (articulating probe) or

8384A

Model 8385 V

Plus or

8385

Model 8385A V

Plus (articulating probe) or

8385A

Model 8386 V

Plus or

8386

Model 8386A V

Plus (articulating probe)

8386A

1

Carrying Case

1319156

4

AA Alkaline Batteries

1208013

1

AC Adapter (optional)

240 V, Australian, 50 Hz

2613106

1

Operation and Service Manual

1980321

1

Static Pressure Tip

3002017

1

Pitot Tube (optional)

3002018

8 ft.

Rubber Tubing

801039

1

Interface Cable (Instrument to Computer)

8940

1

Downloading Software

800832

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 in
Table 1-1. If anything is missing or damaged, notify TSI immediately.

Table 1-1: List of Components

Part /

ELOCICALC

ELOCICALC

ELOCICALC

ELOCICALC

ELOCICALC

ELOCICALC

120 V, NEMA-5, 60 Hz, or
230 V, European, CEE 7/16, 50 Hz or
230 V, Great Britain, 50 Hz, or

2613033
2613078

800169

1

2

1. Backlight Switch

5. Pressure Measurement Ports

2. Display

6. Battery Access Cover

3. Keypad

7. AC Adapter port

4. Probe Mounting Clips

8. Printer Output / Communications Port

Parts Identification

2 6

5

3

8

7

Figure 1-1: V

4

1

ELOCICALC Plus

Chapter 1

Air Velocity

Alkaline

(ft/min)

(m/s)

(hrs)

100

0.5

>8.0

5000

25.0

5.0

Chapter 2

Setting-up

Supplying Power to the VELOCICALC Plus

The V

ELOCICALC Plus can be powered in one of two 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 V
operate with either alkaline or NiCd rechargeable batteries. Battery life
will be shorter if NiCd batteries are used. Carbon-zinc batteries are not
recommended because of the danger of battery acid leakage.

Table 2-1 Typical Battery Life at 20°C

ELOCICALC Plus is designed to

Using the Optional AC Adapter

When using the AC adapter, the batteries (if installed) will be bypassed.
The AC adapter is not a battery charger. Be sure to provide the correct
voltage and frequency which is marked on the back of the AC adapter.

Selecting the Display Units

ELOCICALC Plus is capable of displaying the measured values in

The V
several different measurement units. To change the display units on your

ELOCICALC Plus, refer to Appendix B, DIP Switch Settings.

V

Using the Telescoping Probe

The telescoping probe contains the velocity, temperature, and humidity
sensors (humidity sensor, Models 8386 and 8386A only). When using the
probe, make sure the sensor window is fully exposed and the orientation
dimple is facing upstream. NOTE: For temperature and humidity

measurements, make sure that at least 3 inches (7.5 cm) of the probe is in
the flow to allow the temperature and humidity sensors to be in the air
stream.

3

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 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.

Articulating Probe (Models 8384A/8385A/8386A Only)

The articulating probe has the ability to bend at a 90° angle for those
hard to reach places. To bend the probe, loosen the knurled nut on the
joint, bend the probe, and tighten the nut. To straighten the probe,
loosen the nut, straighten the probe, and tighten the nut.

Changing the Real-Time Clock

ELOCICALC Plus has an internal real-time clock that keeps track of the

The V
time of day (the format is HH.MM where HH is the hour in 24-hour format
and MM is minutes) and the date. It is very important to set the time and
date correctly, otherwise date and time stamping of recorded data will not be
correct. This information has been set to Central Time at the factory before
shipping.

To change the time and date, press and hold both  and  keys during the
power-up sequence when the time is displayed. Release the keys when the

ELOCICALC Plus beeps twice. You will have an opportunity to view and/or

V
change the hours, minutes, year, month, and day of month in sequence. Use
the up and down arrow keys () to change any settings. Use the ENTER
key to store each setting and advance to the next one.

Changing the Baud Rate

ELOCICALC Plus has a variable baud rate that is used when

The V
downloading or printing data from the instrument. By changing the baud rate
to a higher rate, the data will be downloaded faster. NOTE: The baud rate

must be equal to that of your computer or printer.

The instrument baud rate is displayed during the initial power up sequence.
To change the baud rate, press and hold both  and  keys during the
power-up sequence while the baud rate is displayed. Release the keys when

ELOCICALC Plus beeps twice. Use the  and  keys to scroll through

the V
the available values of 1200, 2400, 4800, 9600, and 19200. Press ENTER to
set the value that is displayed.

4 Chapter 2

Connecting the Optional Portable Printer

To connect the printer to the V
Cable (supplied with the optional printer) and connect the 9-pin end labeled
“PRINTER” to the printer and the other end to the data port of the

ELOCICALC Plus. The printer must be set to the same baud rate as the

V

ELOCICALC Plus. See Changing the Baud Rate section for details on how

V
to change the baud rate for the V
of the printer, please refer to that operation and service manual. Always turn

VELOCICALC Plus on before the printer. If the printer prints question

the
marks (??????), asterisks (******), or random characters, reset it by turning
it off and then on again. If necessary, refer to the Portable Printer Manual.

Connecting to a Computer

Use the Computer Interface Cable provided with the V
connect the instrument to a computer for downloading stored data or for
remote polling. Connect the 9-pin end labeled “COMPUTER” to the
computer COM port and the other end to the data port of the V

A 9-pin to 25-pin adapter will be required if your computer has a 25-

Plus.
pin serial port connector.

For more information on how to download stored data see Chapter 3 section
titled Downloading Data to a Computer
Chapter 3 section titled Data Acquisition (Polling)

Caution: This symbol is used to indicate that the data port
of the V

ELOCICALC Plus is not intended for connection to a

public telecommunications network. Connect the data port
only to another RS232 port.

ELOCICALC Plus, locate the Printer Interface

ELOCICALC Plus. To change the baud rate

ELOCICALC Plus to

ELOCICALC

. For polling instructions, see

.

Setting-up 5

Chapter 3

Operation

Keypad Functions

When pressing the keys on the front panel, the V
to confirm the function. If you press a key and the V
not beep, then the V
selected mode.

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 (a more detailed explanation is found in the Setting Data Storage
Options section of this chapter). The maximum number of samples is 1394.

Test ID: A group of samples. A test ID can contain one sample or up to
1394 samples. The statistics (average, minimum, maximum, and count) are
calculated for each test ID. The maximum number of test IDs is 275.

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, readings will be taken and recorded every 30 minutes.

ELOCICALC Plus does not allow that function during the

ELOCICALC Plus will beep

ELOCICALC Plus does

ON/OFF Key

Press to turn the V
sequence the display will show the following: all characters, % battery life,
% log (memory available), baud rate, time (HH:MM), entered barometric
pressure, entered temperature, and then velocity readings.

ELOCICALC Plus on and off. During the power up

7

Arrow (

) Keys

Press to scroll through choices while setting a parameter.

ENTER Key

Press to accept a value or condition.

Backlight Switch

Slide the switch in the upward position to turn on the backlight. The
backlight switch is marked in the international symbols ‘|’ for on and ‘O’ for
off. The backlight will remain on until switched off.

VELOCITY/FLOWRATE Key

Press to toggle back and forth between displaying velocity and flow rate. In
flow rate mode, there are 3 options: flow rate from velocity and area, flow
rate from velocity and a horn, and flow rate from pressure and a K factor.
These are indicated by circle, rectangle, horn symbol and pressure units. Use
 keys to scroll through and select the desired symbol, then press ENTER
to accept the choice. To change the flow rate mode, press either the  or 
key while displaying flow rate, use the  keys to make your selection,
then press ENTER to accept the choice. The test ID will automatically
increment to the next test ID if flow data has previously been stored in the
current test ID.

• If circle is chosen:

SIZE will flash on display. Use  keys to select size (diameter), then
press ENTER to accept the choice and return to measuring.

• If rectangle is chosen:

X SIZE will flash on display. Use  keys to select the x-size of the
duct, then press ENTER to accept the choice and advance to the next
dimension. Y SIZE will flash on display. Use  keys to select the y­size of the duct, then press ENTER to accept the choice and return to
measuring.

• If horn symbol is chosen:

Use  to scroll through horn numbers shown on the display (100,
300, 600, 1200) and K

symbol, then press ENTER to accept the choice.

f

NOTE: The 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. If K

is chosen, the K factor

f

choices will be shown in the following order: last 5 values used, then a

8 Chapter 3

new value which can be adjusted from 0.01 to 999.9. Use the  to
scroll through the K

NOTE: This measurement can only be made with the thermal
anemometer sensor, not the Pitot tube.

• If pressure units (in H

Use  keys to select the K factor, then press ENTER to accept the
choice. The K factor choices will be shown in the following order: last 5
values used, then a new value which can be adjusted from 0.01 to 999.9.
You can zero the pressure while in flow rate from pressure mode by
pressing and holding the pressure key for three seconds. The unit will
double beep to confirm that the pressure has been zeroed. NOTE: This

measurement method is intended for use with diffusers with pressure
taps and a manufacturer-supplied K factor.

When measuring velocity or flow rate, and the measurement type is
changed, the next time the VELOCITY/FLOWRATE key is pressed, the last
measurement used will be displayed. For example, if you were measuring
flow rate, switched to measuring humidity, and then back to VELOCITY/
FLOWRATE, the V
you were measuring velocity, then humidity, and returned to VELOCITY/
FLOWRATE, the instrument will return to velocity.

PRESSURE (zero) Key (Models 8385/8385A/8386/8386A Only)

Press and release to display pressure. Press and hold for three seconds to
zero the pressure reading. The unit will double beep to confirm that the
pressure has been zeroed. NOTE: Make sure that all tubing is disconnected
or open to ambient conditions before zeroing.

choices, then press ENTER to accept the choice.

f

O, mm Hg, Pa, hPa, or mm H2O) are chosen:

2

ELOCICALC Plus will go back to displaying flow rate. If

TEMPERATURE Key

Press and release to display temperature on the large digits instead of
showing it on the small digits. Temperature is usually displayed on the small
digits when other measurement types are on the large digits.

NOTE: For temperature and humidity measurements, make sure that at
least 3 inches (7.5 cm) of the probe is in the flow to allow the temperature
and humidity sensors to be in the air stream.

Operation 9

HUMIDITY Key (Model 8386/8386A Only)

Press to toggle between displaying % relative humidity, dew point
temperature, and wet bulb temperature on the large digits. (The first time
that the button is pushed it will display the last measurement type that was
displayed.) NOTE: To display accurate wet bulb temperature, the correct

barometric pressure must be entered. See Actual/Standard Key
details on setting the barometric pressure. NOTE: For temperature and
humidity measurements, make sure that at least 3 inches (7.5 cm) of the
probe is in the flow to allow the temperature and humidity sensors to be in
the air stream.

THERMAL/PITOT Key (Models 8385/8385A/8386/8386A Only)

Press to toggle back and forth between measuring velocity or flow rate with
the thermal anemometer sensor or with a Pitot tube attached to the pressure
ports. NOTE: If this key is pressed while displaying anything other than
velocity or flowrate, it will have no effect on the readings.

ACTUAL/STANDARD Key

Press to toggle between displaying actual and standard velocity or flow rate.
Press and hold to view, enter, or change ambient conditions. When the key is
pressed and held, the pressure units will flash and the last barometric
pressure entered will be displayed. Use the  keys to change the
barometric pressure and press ENTER to accept it. Then the temperature units
will flash and the last temperature entered will be displayed. Use the 
keys to change the temperature and press ENTER to accept it and return to
measuring mode. The ranges that can be entered are as follows: Pressure: 15
to 40 in. Hg (381 to 1016 mm Hg), 29.92 in. Hg (760 mm Hg) is default;
Temperature: -80 to 400°F (-62 to 204°C), 70°F (21.1°C) is default. NOTE:

When obtaining wet bulb temperature or heat flow readings, the correct
barometric pressure must be entered. Both the barometric pressure and
temperature need to be entered when measuring the following: 1) actual
velocity (or flow rate) with either the thermal anemometer or the Pitot tube,
or 2) standard velocity (or flow rate) with a Pitot tube.

section for

SAMPLE INTERVAL Key

The SAMPLE INTERVAL key is used to set the time constant and logging
intervals. Press to display current time constant. Use  to scroll through
the time constant choices, which are 1 s, 2 s, 5 s, 10 s, 15 s, 20 s, and LOG
symbol, then press ENTER to accept the choice. If LOG was chosen, the
first logging interval choice will be disp layed. Use  to scroll through the
logging interval choices, which are 2 s, 5 s, 10 s, 15 s, 20 s, 30 s, 1 min, 2
min, 5 min, 10 min, 15 min, 20 min, 30 min, 60 min, and OFF. Press
ENTER to accept choice and return to measuring mode. If a logging interval
is chosen that is shorter than the time constant, the time constant will be
shortened to be equal to the logging interval.

10 Chapter 3

NOTE: To operate the instrument in discrete data logging (or single point)
mode, the logging interval must be set to OFF. To operate the instrument in
continuous data logging mode, the logging interval must be set to something
other than OFF.

SAMPLE (options) Key

Discrete Data Logging (Single Point Measurements)

The instrument must first be in discrete data logging mode. See SAMPLE

INTERVAL Key section for more details. Press the SAMPLE key to take a

sample. The sample that gets stored is the measurement types that were
chosen in sample options (see Setting Data Storage Options
details) and

the measurement type that is on the large digits. While the
sample is being taken, the small digits will read the sample number, the
COUNT indicator will be lit, and the SAMPLE indicator will flash
during the length of the sample. The sample will last until the length of
a time constant has passed. Then the V

ELOCICALC Plus will display the

sample number and the value that was recorded.

Continuous Data Logging (Multiple Readings Over Time)

The instrument must first be in continuous data logging mode. See

SAMPLE INTERVAL Key

section for more details. Press the SAMPLE key

to start a sample. The parameters that are stored are those that were
turned on in the options menu as well as that on the large digits.
Samples will be taken at intervals that were set in the SAMPLE INTERVAL
menu (see the SAMPLE INTERVAL Key

section for more details). The

display will light LOG while samples are being taken an d SAMPLE will
light as the data is stored. Press the SAMPLE key again to stop the
sample. The display will then scroll through the following: number of
samples stored, test ID number and average of the measurements that
were stored. To review this data and/or individual data points, please
see STATISTICS (review data) Key

section.

for more

Setting Data Storage Options

In this section the terms “On” and “AUtO” are referred to. The
following brief explanations may help to understand what function is
being performed. “On” means that measurement type will log whenever
the SAMPLE key is pressed. “AUtO” means that measurement type will
automatically log if it is needed to calculate the measurement type on
the large digits when the SAMPLE key is pressed.

For example, if dew point is being displayed on the large display digits
and SAMPLE is pressed, then dew point, humidity, and temperature will
all be stored automatically because dew point is calculated using

Operation 11

Displayed Measurement

Type

Measurement Types Automatically

Stored

Thermal Velocity

Velocity

Pitot Velocity

Velocity, Pressure

Temperature

Temperature

Pressure

Pressure

Humidity

Humidity

Wetbulb

Humidity, Temperature, Wetbulb

Dew point

Humidity, Temperature, Dew point

stored separately)

Flow rate from duct size

Velocity, Flow rate, Pressure if velocity
Flow rate from a horn

Velocity, Flow rate

Flow rate from Pressure

Pressure, Flow rate

humidity and temperature. Table 3.1 shows what measurements are
stored automatically when a specific measurement type is on the
display.

Table 3.1: Measurement Types Stored When SAMPLE is Pressed

Heat flow Heat flow, Humidity, Temperature

(Flow rate is needed, but must be

and shape

Press and hold the SAMPLE key to view, enter, or change data storage
options. “SET” lights up on the small display. The velocity units light
up, and the large display says “On” or “AUtO”, depending on how it
was set previously. Use  to toggle between on and auto, then press
ENTER to accept setting and advance to next parameter. The flow rate
units light up, and lower display says “On” or “AUtO”, depending on
how it was set previously. Use  to toggle between on and off, then
press ENTER to accept setting and advance to next measurement. This
pattern will continue through the following measurements: differential
pressure, temperature, relative humidity, dew point temperature, and
wet bulb temperature. Follow the same instructions as set forth above
for each parameter. Once all the measurement parameters have been
displayed, the instrument will return to measurement mode.

is from Pitot

12 Chapter 3

NEXT TEST (clear) Key

Press to advance to the next test ID. If the current test ID does not have
anything stored, it will not advance to the next test ID. To clear the last
sample, press and hold the key and the display will begin a countdown from
5 to 0. Release the key at any time during the countdown before zero is
displayed. To clear all memory, keep holding key during the countdown.
Release the key when 0 is displayed. The display will flash ‘CLEAR LOG’.

NOTE: Only the last sample recorded can be cleared without clearing the
entire memory. You cannot go back to a previous test ID and clear a single
reading. Also, you cannot add data to a previous test ID. Sample clear does

not work in continuous data logging mode.

STATISTICS (review data) Key

The STATISTICS key has two purposes. One is to view the statistics for the
currently displayed parameter and the other is review data for a particular
test ID.

To View Statistics

Press STATISTICS to view statistics for the parameter cur rently shown
on the large digits. The count will be shown on the small digits and the
test ID on the large digits. Count will stay on the small digits and the
large digits will change to displaying average. Press STATISTICS again
(before the average disappears from the display) to proceed to
maximum and again to display minimum.

To Review Data

Press and hold STATISTICS. The V

ELOCICALC Plus will beep twice,

release the key and the test ID number will be displayed on the small
digits and the TEST ID symbol will light up. Use  to select the
desired test ID. Press ENTER to accept the test ID number. Use  to
select and view average, maximum, minimum, count, and individual
sample numbers with values for the selected test ID. The samples will
be displayed in the order that they were taken, from the first sample of
that test ID to the last. To view a different test ID, press STATISTICS
again to return to test ID on small digits and nothing on large digits. Use
 to choose a new test ID, then press ENTER to accept the choice and
continue as above to review the data. To review data of a different
measurement type, press the desired measurement type button while
AVG, MAX, MIN, COUNT or sample is being displayed. If there is no
data for that measurement type, “----” will be displayed. Press another
measurement type key to view more data or press ENTER to return to
measuring mode.

Operation 13

HEAT FLOW Key (Model 8386/8386A Only)

In order for the V
temperature, and humidity need to be recorded at one location before the
heating (or cooling) source and one location after the source. The data at
these locations must be stored in two sequen tial test IDs. The first test ID is
used as reference for calculating heat flow in the second test ID. To store the
required data for heat flow calculations, proceed as outlined below.

1. Make sure that the correct barometric pressure is entered in the

instrument or the obtained readings will be incorrect. If flow is being
measured from a Pitot tube, make sure the correct flow temperature is
also entered. The flow rate displayed must be is STANDARD flow, not
ACTUAL flow, or the “nO rEF” message will appear on the display.
This message indicates that there is missing or incorrect reference data
for calculating heat flow. (See ACTUAL/STANDARD Key
details on setting these parameters.)

2. Make sure the instrument is in discrete (or single point) sampling mode.
(See SAMPLE INTERVAL Key
details on how to be in discrete sampling mode.)

3. Press NEXT TEST to start a new test ID.

4. Press VELOCITY/FLOWRATE key to display flow rate.

5. Press SAMPLE key and store multiple readings at the first (reference)
location. Taking several samples in the traverse of the duct provides
accurate average readings.

6. Press TEMPERATURE key.

7. Press SAMPLE to record the temperature readings.

8. Press HUMIDITY key to display relative humidity (% RH).

9. Press SAMPLE to record the relative humidity.

10. Press NEXT TEST key to advance to the next test ID. Move probe to the
second location. (Make sure that at least 3 inches (7.5 cm) of the probe
are in the flow to allow the temperature and humidity sensors to be in
the air stream.)

11. Press HEAT FLOW key to get instantaneous readings of sensible heat
flow. Press key three more times to display latent heat flow, total heat
flow, and sensible heat factor.

12. Press SAMPLE key to store readings at second location.

ELOCICALC Plus to calculate heat flow, the flow rate,

section for

and SAMPLE (options) Key sections for

14 Chapter 3

To record readings of heat flow over time, proceed as above with steps 1-11
and then follow the steps below.

1. Change from discrete to continuous data logging (See SAMPLE

INTERVAL Key and SAMPLE (options) Key sections for details on how to

change to continuous sampling mode).

2. Press SAMPLE to start a sample. This will automatically log data that is
required.

3. Press SAMPLE to stop the sample.

This will allow you to record data over time which, when downloaded to a
computer, can be graphed.

Printing Data Using the Portable Printer

The following will be printed as long as a printer is connected. When
viewing statistics, the statistics shown on the d isplay for the current test ID
will be printed automatically when the STATISTICS key is pressed. When
reviewing data, nothing will print. When taking a sample, the reading will be
printed automatically each time the SAMPLE key is pressed.

To print everything in memory, press and hold the ENTER key. This will
initiate a countdown from 5 to 0. When the display shows zero, release the
key and everything in memory will print to the printer. The display will re ad
“Send dAtA” while dumping the memory. If you release the key at any time
other than 0 during the countdown, nothing will print. To stop printing at
any time, turn the V

rate on the V
is 1200).

ELOCICALC Plus off. NOTE: In order to print, the baud

ELOCICALC Plus must be set to the same as the printer (default

Downloading Data to a Computer

“LOGDAT” is a windows-based program from TSI designed to download
the data stored in the memory of the V

ELOCICALC Plus to a computer. This

data includes the test ID, measurement, unit of measure, flow area, and
sample interval. This data is date and time stamped. In addition, the s tatistics
for each test ID are provided. The file containing the downloaded data is
sorted and tab delimited to allow it to be imported into a spreadsheet for
further data analysis.

To install LogDat software, run the SETUP.EXE file on the LogDat
distribution disc. Once you open the program, it is self-directing and
provides all the necessary instructions for downloading data.

To download data from the V
computer interface cable to the V

ELOCICALC Plus, connect the supplied

ELOCICALC Plus and to a computer serial

port. Any serial port from COM1 to COM4 can be used.

Operation 15

Data Acquisition (Polling)

ELOCICALC Plus is designed to allow you to perform polling through

The V
the use of a computer. To do this your computer must be hooked up and in
terminal mode and the baud rate for the computer and the V
must be set to the same value. For details on viewing or changing the baud
rate see Changing the Baud Rate

section in Chapter 2. You must then send
an upper case V to the instrument. Th e values that are sent back to the
computer are for those measurement types that are turned “on” in “Sample
Options” menu. See Setting Data Storage Options

and SAMPLE INTERVAL

Key sections earlier in this chapter for more details.

You must write their own routine (program) to obtain information at specific
intervals from the V

ELOCICALC Plus. The meter will only print information

when the SAMPLE button is pressed.

Caution: This symbol is used to indicate that the data port
of the V

ELOCICALC Plus is not intended for connection to a

public telecommunications network. Connect the data port
only to another RS232 port.

ELOCICALC Plus

16 Chapter 3

U.S. & International

TSI Incorporated

500 Cardigan Road

Shoreview MN 55126-3996

Tel: [phone]

[phone]

Fax: [phone]

Chapter 4

Maintenance

The VELOCICALC Plus 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 V
recalibration. For a reasonable fee, we will quickly recalibrate the unit and
return it to you in “as new” working condition; it is especially important in
applications where strict calibration records must be maintained. 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://rma.tsi.com

.

ELOCICALC Plus to TSI for annual

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

ELOCICALC Plus. If the enclosure of the VELOCICALC Plus or the AC

V
adapter becomes broken, it must be replaced immediately to prevent access
to hazardous voltage.

Storage

When storing the V
batteries is recommended. This prevents damage due to battery leakage.

ELOCICALC Plus for more than one month, removing the

17