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Ventilation Testing
DP-CALC
TM
Micromanometer
Model 5825
Operation and Service Manual
ENERGY AND COMFORT
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CONTENTS
CHAPTER 1 UNPACKING AND PARTS IDENTI F ICATION ............ 1
CHAPTER 2 SETTING-UP ................................................................. 3
Supplying Power to the Model 5825 DP-CALC Micromanometer ... 3
Installing the Batteries ............................................................... 3
Using the Optional AC Adapter ................................................. 3
Connecting to a Computer .............................................................. 3
CHAPTER 3 OPERATION ................................................................. 5
Keypad Functions ........................................................................... 5
Common Terms .............................................................................. 5
Menus ............................................................................................. 6
DISPLAY SETUP ................................................................................. 6
PRESSURE ZERO ............................................................................... 6
SETTINGS ......................................................................................... 6
FLOW SET UP .................................................................................... 6
ACTUAL/STANDARD SETUP ................................................................ 6
DATA LOGGING ................................................................................. 7
Measurements ........................................................................... 7
Log Mode/Log Settings ............................................................. 7
Delete Data ................................................................................ 7
% Memory ................................................................................. 7
LogDat2TM Downloading Software .................................................. 7
CHAPTER 4 MAINTENANCE ............................................................ 9
Recalibration ................................................................................... 9
Cases .............................................................................................. 9
Storage ........................................................................................... 9
CHAPTER 5 TROUBLESHOOTING ................................................ 11
APPENDIX A SPECIFICATIONS ..................................................... 13
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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 below. If
anything is missing or damaged, notify TSI immediately.
1. Carrying case
2. Instrument
3. Pressure tubing
4. Static pressure tip
5. USB cable
6. CD-ROM with downloading software
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Chapter 2
Setting-up
Supplying Power to the Model 5825 DP-CALC Micromanometer
The Model 5825
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 5825 is designed to
operate with either alkaline or NiMH rechargeable batteries, although it
will not recharge NiMH batteries. Battery life will be sho rter 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 batter ies (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.
Connecting to a Computer
Use the Computer Interface USB Cable to connect the instrument to a
computer. Connect the end labeled “COMPUTER” to the computer USB
port and the other end to the data port of the Model 5825.
For information on how to download stored data see Chapter 3 LogDat2™
Downloading Software.
Caution: This symbol is used to indicate that the data port
of the Model 5825 is not intended for connection to a
public telecommunications network. Connect the USB
data port only to another USB port.
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Chapter 3
Operation
Keypad Functions
ON/OFF Key
Press to turn the Model 5825 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 (or ) 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,
Pressure Zero, 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”.
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6 Chapter 3
Log 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, each sample
will be the average of the last 30 minutes.
Menus
DISPLAY SETUP
Display setup menu is where you will setup the desired parameters to be
displayed on the running screen. With a parameter highlighted you can then
use the ON soft key to have it show up on the running screen or select the
OFF soft key to turn off the parameter. Use 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.
PRESSURE ZERO
To zero the pressure reading, select the Pressure Zero menu. The instrument
will indicate if the pressure zero was successful.
SETTINGS
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
or soft keys to scroll through the settings for each option and
use the
key to accept settings.
FLOW SET UP
In Flow Setup mode, there are four types: Round Duct, Rectangle Duct, Duct
Area, and K-Factor. Use the
or soft keys to scroll through the types and
then press the
key to accept the desired type. To change the setting,
highlight the Enter Settings option and press the
key.
NOTE: K-Factors are intended for use with diffusers with pressure taps
and a manufacturer-supplied K factor.
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.
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Operation 7
DATA LOGGING
Measurements
Measurements to be logged are independent of measurements on the
display, and must therefore be selected under DATA LOGGING
Measurements.
Log Mode/Log Settings
You can set Log Mode to Manual and Auto-save.
• Manual mode does not automatically save data, but instead prompts
the user to save a sample.
• In Auto-save mode, the user manually takes samples that are
automatically logged.
• The Log Interval setting is active during Auto-save mode
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.
LogDat2
TM
Downloading Software
The Model 5825 comes with special software called LogDat2 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 LogDat2 CD-ROM.
To download data from the Model 5825, connect the supplied computer
interface USB cable to the Model 5825 and to a computer USB port. Then
run the LogDat2 downloading software. Within the LogDat2 software, either
select the tests to be downloaded or double-click on a test to open it.
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Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Model 5825. If your symptom is
not listed, or if none of the solutions solves your problem, please contact
TSI.
Table 5-1: Troubleshooting the Model 5825
Symptom
Possible Causes
Corrective Action
No Display
Unit not turned on
Switch unit on.
Low or dead batteries
Replace batteries or plug
in AC adapter.
Dirty battery contacts
Clean the battery
contacts.
Reading fluctuates
/ unstable
Fluctuating flow
Reposition probe in
less-turbulent flow or use
longer time constant.
No response to
keypad
Keypad locked out
Unlock 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 instrument.
WARNING!
The pressure sensor is protected from damage up to 7 psi (48 kPa or
360 mmHg). At higher pressure it can burst!
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13
Appendix A
Specifications
Specifications are subject to change without notice.
Static / Differential Pressure:
Range
1
: -15 to +15 in. H2O (-28.0 to +28.0 mm Hg, -3735 to
+3735 Pa)
Accuracy: ±1% of reading ±0.005 in. H
2
O (±0.01 mm Hg, ±1 Pa)
Resolution: 0.001 in. H
2
O (0.1 Pa, 0.01 mm Hg)
Velocity From a Pitot Tube:
Range
2
: 250 to 15500 ft/min (1.27 to 78.7 m/s)
Accuracy
3
: ±1.5% at 2000 ft/min (10.16 m/s)
Resolution: 1 ft/min (0.1 m/s)
Duct Size:
Range: 1 to 500 inches in increments of 0.1 in.
(2.5 to 1270 cm in increments of 0.1 cm)
Volumetric Flow Rate:
Range: Actual range is a function of actual velocity, pressure, duct
size, and K factor
Instrument Temperature Range:
Operating : 40 to 113°F (5 to 45°C)
Storage: -4 to 140°F (-20 to 60°C)
Instrument Operating Conditions:
Altitude up to 4000 meters
Relative humidity up to 80% RH, non-condensing
Pollution degree 1 in accordance with IEC 664
Transient over voltage category II
Data Storage Capabilities:
Range: 12,700+ samples and 100 test IDs
Logging Interval:
Intervals: 1 second to 1 hour
Time Constant:
Intervals: User selectable
External Meter Dimensions:
3.3 in. × 7.0 in. × 1.8 in. (8.4 cm × 17.8 cm × 4.4 cm)
Meter Weight:
Weight with batteries: 0.6 lbs (0.27 kg)
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14 Appendix A
Power Requirements:
Four AA-size batteries (included) or AC adapter (optional) 9 VDC, 300 mA,
4-18 watts (input voltage and frequency vary depending on which adapter is
used)
1
Overpressure range = 7 psi (190 in. H2O, 360 mmHg, 48 kPa).
2
Pressure velocity measurements are not recommended below 1,000 ft/min (5 m/s) and are best
suited to velocities over 2000 ft/min. Range can vary depending on barometric pressure.
3
Accuracy is a function of converting pressure to velocity. Conversion accuracy improves when
actual pressure values increase.
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