Omega Products OM-3001 Installation Manual

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Trademark Notice
Registered trademarks belong to their respective owners.

COPYRIGHT – 2001 OMEGA Engineering



All Rights Reserved

2

CONTENTS

INTRODUCTION ............................................................ 7

1.1 STANDARD FEATURES...............................................8

1.2 STANDARD KIT ITEMS................................................9

1.3 SUMMARY OF PARTS ...............................................10

1.4 PRECAUTIONS...........................................................11

1.5 USING THIS MANUAL................................................13

1.5.1 Warnings ..........................................................................13

1.5.2 Names ..............................................................................13

1.5.3 Instruction Sequences......................................................14

1.5.4 Instruction Types ..............................................................14

BASIC OPERATION .................................................... 15

2.1 GENERAL...................................................................16

2.1.1 Powering Up.....................................................................16

2.1.2 Accessing Main Menu ......................................................16

2.1.3 Selecting a Main Menu Item.............................................17

2.1.4 Selecting an Option..........................................................17

2.1.5 Editing Names..................................................................19

2.1.6 Editing Numerical Values .................................................22

2.2 SETTING UP INPUTS.................................................23

2.2.1 Channel Selection & Setup ..............................................24

2.2.2 Temperature Channel Setup............................................25

2.2.3 Matching Inputs to Sensors..............................................26

2.2.4 Modifying the Input boxes ................................................27

2.2.5 Editing the Input Value: ....................................................28

2.2.6 Sampling the Input value:.................................................28

2.2.7 Modifying the Output boxes..............................................29

2.2.8 Modifying the Units...........................................................29

2.3 SETTING UP CHANNELS...........................................30

2.3.1 Setting Up Your Recording (The Trigger Menu) ..............30

2.3.2 Setting Display Options....................................................36

2.3.3 Graph Controls .................................................................37

2.4 RECORDING DATA ....................................................39

2.4.1 Setting Up the Filename...................................................39

3

2.4.2 Choosing a Folder ............................................................39

2.4.3 Starting a Recording.........................................................40

2.4.4 Auto-Repeating Recordings .............................................40

2.4.5 Chained Recordings.........................................................41

2.5 PLAYING BACK .........................................................42

2.6 FILE UTILITIES...........................................................43

2.7 OUTPUTTING SAMPLES FROM RS232....................44

UTILITIES..................................................................... 45

3.1 RESETTING THE INSTRUMENT................................46

3.2 ADJUSTING LCD........................................................47

3.2.1 Adjusting Contrast ............................................................47

3.2.2 Turning Backlight On........................................................47

3.3 SETTING CLOCK .......................................................48

3.3.1 Checking Date and Time..................................................48

3.3.2 Setting Date and Time......................................................48

3.4 MANA GING BATTERY...............................................49

3.4.1 Instrument Battery............................................................49

3.4.2 Checking Battery Capacity...............................................50

3.4.3 Charging Powered-up instrument.....................................50

3.4.4 Charging Powered-down instrument................................50

3.4.5 Reconditioning Battery Pack ............................................52

3.4.6 Power Saver.....................................................................52

3.4.7 Replacing Battery Pack....................................................53

3.5 ERASING MEMORY...................................................54

3.6 TROUBLESHOOTING................................................55

3.6.1 Power Problems...............................................................55

3.6.2 Data Problems..................................................................55

3.6.3 Data-Transfer Problems...................................................56

3.6.4 Other Problems ................................................................56

ANALYSIS SOFTWARE............................................. 57

4.1 INSTALLING OM-3000

4.1.1 License Agreement ..........................................................58

4.1.2 PC System Requirements................................................58

4.1.3 Installing OM-3000

4.2 STARTING UP

4

MAS

.....................................................60

MAS

........................................58

MAS

on a PC .....................................59

4.2.1 Starting up ........................................................................60

4.2.2 Configuring PC COM port ................................................60

4.3 TRANSFERRING DATA TO THE PC..........................61

4.4 MANA GING DATA......................................................62

4.4.1 Opening a File ..................................................................62

4.4.2 Merging Two Files ............................................................62

4.4.3 Using the Navigator..........................................................62

4.4.4 Deleting Data from a Folder.............................................62

4.4.5 Editing Recording Details.................................................63

4.4.6 Viewing and Printing Data Values....................................63

4.4.7 Exporting data ..................................................................64

4.5 CALCULATING DATA................................................65

4.6 PLOTTING DATA........................................................66

4.6.1 Plotting Single and Individual Charts ...............................66

4.6.2 Zooming & Panning..........................................................67

4.6.3 Printing Charts..................................................................67

4.6.4 Reading and Comparing Values ......................................68

4.6.5 Plotting Waterfall Charts...................................................70

4.7 UPGRADING FIRMWARE ..........................................71

Appendix SPECIFICATIONS ..................................... 73

Appendix Application Notes..................................... 75

6.1 Application Note 1..................................................... 75

Application Note 2...........................................................78

Appendix Optimizing Temperature Accuracy......... 79

Appendix OM-3000

8.1 FUNCTIONS................................................................82

8.1.1 Mathematical Functions ...................................................82

8.1.2 Iterative Functions ............................................................84

8.1.3 Logical Functions..............................................................84

8.1.4 Conditional Functions.......................................................85

8.1.5 Date and Time Functions.................................................85

8.2 OPERA TORS..............................................................86

8.2.1 Logical Operators .............................................................86

8.2.2 Arithmetic Operators ........................................................86

MATH ................................. 81

MAS

5

6

INTRODUCTION

Congratulations on purchasing the
The T4 allows up to four channels of

ranging from –250 to +1370
thermocouple type. Collected data can be trans ferred to a PC where
it can be analyze d in detail us ing the
supplied in the kit.

This manual has been f ormatted to a llow you to quic kly learn ho w to
use your
read it before operating your

OM3001

. Please keep this manual for futur e reference and

OM3001-T4

o

C (-418 to +2498oF) depending on the

MAS

OM3001

.

.

temperature

Windows



measurement

based software

7

1.1 STANDARD FE ATURES

• 24-bit A/D converter providing high-precision measurements

• 512kB non-volatile memory capable of storing up to 400,000

sample points

• Time and date stamped recordings

• Temperature compensated graphical L CD (liquid cr ystal displa y)

with 240x128 pixels

• Electro-luminescent LCD backlight

• Built-in battery charger and conditioner

• 1500mAh Ni-Cad (Nickel-Cadmium) battery pack

• Upgradeable firmware

• RS232 interface to communicate with a PC (personal computer)

• Windows

8



based Measurment Analysis Software (

MAS

)

1.2 STANDARD KIT ITEMS

9

1.3 SUMMARY OF PAR TS

10

1.4 PRECAUTIONS

WARNING

operating your instrument. Not heeding the warnings or
recommendations c ould res ult i n data loss, data inaccuracy, dam age
to the instrument, or injury to yourself.

WARNING

transfer cable and bootstrap
cannot be entangled with any
moving or rotating machinery.

: Please read and understand this section fully before

WARNING

connect any sensor to a high voltage i.e. a vo ltage
that exceeds 50VDC or 32VAC or the “safety extra
low voltage” (SELV) defined by your local power
authority.

: Ensure the data-

: To avoid electrical shock, do not

WARNING

an explosive environment.

: Do not operate the instrument in

WARNING

the instrument for more than 2 hour s as data and
settings may be lost.

: Do not detach the battery pack from

WARNING

a PC before Reprogramm ing the instrum ent with new
firmware – reprogramming the instrument erases all
data stored in the instrument (see section 4.6).

: Transfer data stored in t he instrument to

<

2 hours

11

WARNING

: Charge the battery pack up to at leas t 30%
capacity before taking a recording. If using the
instrument for 4 hours or more, first ensure that the
battery pack is fully charged.

30%

>

WARNING

: Constantly charging the battery when it is not fully
drained will create a "Memory" effect and eventually shorten the
amount of charge that the battery can hold. Please read

Managing Battery

to learn how to prevent this.

WARNING

: Do not expose the instrument to large

3.4

impacts or pressure.

WARNING

solvent to clean the instrument.

: Do not use alcohol or any organic

WARNING

: Do not expose the instrument to wet

Kero

conditions or store it in a dam p place where the r elati ve

humidity exceeds 80% RH.

WARNING

: Do not place the instrument in a hot
place where the tem perature exceeds 140°F (60°C).
Otherwise, the battery pack will degrade.

WARNING

: Ensure that the battery pack is securely
fastened – but not over-tightened – to the instrument
before operating the instrument.

WARNING

: If the instrument malf unctions, return it
to an authorized dealer. Do not try to repair it
yourself, as this will invalidate the warranty.

WARNING

: Use only an approved power transformer
and ensure its voltage and frequency rating matches
that of your mains AC power.

12

DEALER

AUTHORIZED

1.5 USING THIS M AN UAL

1.5.1 Warnings

In this manual, the word
actions may lead to dam aging consequences. Please he ed all such
warnings.

WARNING

is displayed where certain

1.5.2 Names

In this manual, window and screen names are italicized. These
names refer to the names appearing at the top of windows/screens.

MAS

Window

The PC key names ar e shown as norm al tex t, e.g. Shif t ref ers to the
Shift key on the PC keyboard.

Keys on the instrument are shown as they appear on the instrum ent
keypad, e.g.
Some instrument keys have more than one function, e.g. the

key which is used as either t he ON k e y or the OFF key depending on
the state the instrument is operating in.

refers to the Shift key on the instrument.

13

1.5.3 Instruction Seque n ces

The ! symbol is used to indicate the sequence of menu selections.

Instruction Meaning

Click File ! Save. Select the File menu and t hen

select Save.

1.5.4 Instruction Types

The word “press” refers to key presses or menu selections on the
instrument.

The word “click” refers to menu selections on the PC, and “push”
refers to key presses on the PC keyboard.

Instruction Meaning

Click File ! Export.

Push the Esc key.

Some operating instructions are illustrated with examples. Such
instructions are marked with the word

14

Select File and then Export in
OM-3000

Push the Esc key on the PC
keyboard.

EXAMPLE

MAS

.

software.

BASIC

OPERATION

This section outl ines the procedure for perform ing basic operations
on your instrument. You will learn to:

• use the instrument menu system;

• record data; and

• playback recorded data.

WARNING

: Read section 1.4 before operating your instrument.

15

2.1 GENERAL

2.1.1 Powering Up

• Press

• Press

that is being measured (using previous settings).

• To power down, press
the instrument does not respond to any key press, reset it (see
section 3.1).

. The Initialization screen is displayed.

. Measurement begins and the screen displays data

*

and follow on-screen instructions. If

2.1.2 Accessing Main M e nu

To perform instrument operations, you need to access the main
menu. To access the main menu:

• Press

You can alternativel y press
top of the screen and consis ts of four items: File, Display, Trig(ger),

and Sys(tem). To cancel the main menu, press

.

. The main menu is dis played at the

again.

Every time the instrument is powered up, the power saver (a power-saving feature)

*

is automatically turned on. See section 3.4.6 for more details.

16

2.1.3 Selecting a Main M enu Item

• Press the number preceding the menu item.

Alternativel y, press

or .

EXAMPLE

The drop down menu above shows the available options for the
Trigger menu. To c a n c e l a d r opdown menu, press

: to select the main menu item Trig, press

and to cycle to the menu it em then pr ess

.

.

2.1.4 Selecting an Opti o n

The procedure for s electing an option in a dropdown m enu is similar
to selecting a main menu item i.e.

• Press the num ber preceding the opti on, or press
cycle to the option and then press

Selected options, where appropriate, are checked (!). Selecting
options with names ending with “…” br ings up windows that pr ovide
more options. These o ptions, and any further options they provide,
can be selected in the same manner. Most windows have self­explanatory instruc tions. If more than one window is displayed, the

topmost is the active one. To cancel a window, press

or .

and to

.

17

EXAMPLE:

to select Level Based… in the example below, press

18

2.1.5 Editing Names

To enter characters in the text editing window:

• Select Display from the m ain m enu an d then se lect Edit Ch annel
Units or Edit Channel Names.

• Pres s the ke y with the character you want un til it appears above
the flashing cursor.

e.g. to enter the letter B, press

• The cursor advances automatically when you press the next key.

e.g. if the next letter you want to enter is E, press
displayed.

• If the next letter of the word is on the same key just pressed,
press

e.g. press
(The cursor can be moved backwards by pressing

• More editing options (and their shortcut keys) are available by
pressing

to advance the cursor position.

then press key until the letter D appears .

.

until the B is displayed.

until E is

).

Note

:

and can be used to enter the space character.

19

Libraries are available to make entering text easier.

• Press

• Pressing

to access the library categories.

will show the last text library selected.

20

Table of Short Cut Keys

Short Cut Key Meaning

! or
! or

or

(press twice)

To toggle from upper to lower case press and choose the
desired case from the pop-up menu.

Folder, Recording and Channel names can have a maximum of 16
characters. Unit Names can have a maximum of 8 characters.

Clear all text
Move cursor forward
Move cursor back
Insert a space
Delete character

Can be used to enter a space

Text Library
Last Text Library

21

2.1.6 Editing Numerical Values

• Select the numeric field to be edited (using the normal option
selection procedure outlined in section 2.1.4).

• Press the appropriate digit keys to enter the desire d value. Ent er
a decimal point by pressing

• To make the number negative/positive press

• Clear floating point num bers by pressing

point numbers can sometimes be incremented or decremented
by pressing

SAMPLING PERIOD.

or

, e.g. This is possible when setting the

.

.

. Non-floating

22

2.2 SETTING UP I NP UTS

The T4 module is capable of simultaneous measurements of up to
four channels of data at a time.

WARNING

1. Never allow voltages of more than 10V between any two
thermocouple inputs, or 5V between an input and module
ground. This may damage the instrument.

2. For best accuracy, all sources being measured should be
perfectly isolated from each other (including thermocouple
inputs)

†

.

† See Appendix Optimizing Temperature Accuracy.

23

2.2.1 Channel Selection & Setup

The instrument needs to know what type of sensor is attached to
each input channel. You must set up the input channels one at a
time.

• Access the main menu (see section 2.1.2).

• Press Sys ! Setup Inputs… to display the “Setup Channel

Input” window.

• Press

• Select the channel you would like to setup.

Note:

24

or to display the channel drop down menu.

Channels can be named b y choosing “Edit/Names” from the
”Display” menu on the main menu bar (see section 2.1.2).
These names appear when downloading to a PC.

2.2.2 Temperature Chan ne l Setup

The options available for setup are as follows;

Thermocouple type can be selected

• This can be done b y moving the cursor to the “K-type”
option in the “Setup Channel Input” window and

pressing
displayed.

• All thermocouples attac hed to the instrum ent m u st be of
the same type.

Units can be selected

• Move the cursor to the units displayed below the
thermocouple type and press

through the units, “

or . The following screen will be

o

C”, “oF”, and “User”.

or to cycle

25

2.2.3 Matching Inputs t o Sensors

If you are using standard thermocouple, then no further setup is
required. However if you require to perform a correc tion or offset for
a particular therm ocouple you can m atch the inputs from the s ensor
to the values you would like displa yed.

EXAMPLE

The thermocouple is displaying:

: If you have a thermocouple that is out by 10

o

10

C at 0oC

and 110

o

C at 100oC

Then the following linear relationship is assumed:

100oC

Measurement

to display

o

C

50oC

o

0

C

o

10

C

Thermocouple reading

o

C

o

C;

110oC60oC

26

2.2.4 Modifying the Inp u t boxes

In this example we will setup the channel to match the following
sensor inputs:

• From the main menu, press Sys ! Setup Inputs… and select
the channel to be setup.

• Use
through the options to se lect User type. The Input, Output, and
Units boxes will appear.

• Use the
input box you wish to edit.

• Press

or

to select the unit type and press to cycle

or

or to display a list of edit options.

arrows to move the flashing cursor to the

27

2.2.5 Editing the Input V alue:

• Select “Edit Input…” to enter the thermocouple input in

• Press

or to accept the entered value.

o

C.

2.2.6 Sampling the Inpu t value:

It is also possible to set th e input boxes b y sampli ng the t em perature
being monitored by the instrument.

This is very useful if you know what you’re measuring, but do not
know what temperature your input thermocouple is providing.

• To match the input box follow the steps from the previous
example, but choose “Sample Input”.

• The input box will update with the sample taken being displayed
in the selected input box.

• If you are not happy with the sampled value keep selecting
“Sample Input” until you are, then press

menu.

Note

: • The first input box reading must be lower than the

second input box.

• Input box readings must be more than 50

28

to close the options

o

apart.

2.2.7 Modifying the Out p ut boxes

• Use the
output box to be altered.

• Press
become highlighted, with its previous value cleared. Now enter in

the value, and press

• Now press
should flash beneath it).

• Press

or to accept this value.

Note

: Output box values • Can be positive or negative.

or

or to edit the value in this box. The box will

to begin editing. T ype in the number 3.4, and press

arrows to move the flashing cursor to the

or to accept this value.

arrow to select the nex t output box (The cursor

• Can contain decimal places.

• Can be in any order (i.e. box 1 can be

greater than box 2).

2.2.8 Modifying the Uni t s

• To change the units (e.g. to mm), press
flashing cursors appear below the unit boxes.

• Press
window will appear (see section 2.1.5).

to begin editing the unit. The “Enter Channel Unit”

arrow until two

29

2.3 SETTING UP C HAN NELS

2.3.1 Setting Up Your R ec ording (The

Trigger M enu)

Most of the important information involved in your recording is
entered under the trigger menu. Trigger T ype, which Channels are
enabled, Sample Period, and Recording length/time.

Below are examples of all the trigger menu item s. Each item can be
configured by follo wing the pop-up m enus as per previous sections.

Timer and level b ased trigger optio ns can be selected by t he

arrows and pressing or .

The Trigger Type (how recordings are started).

or

There are three main types of trigger available:

•

Manual Trigger

•

Time Based Trigger

•

Level Based Trigger

30

1 Manual Trigger

button.

- recording started and stopped by pressing

2 Timer Based Trigger

e.g. • Log data every day

Starting at 10:05:00am

• Record 5 samples

• Sample Period = 1 second

• After Recording

Power Down
(30 sec sensor warm up)

10:05:00am

Recording Period

W

Sample Period

= 1 second

Logging Period = 1 day

= 5 Samples

10:05:00am 10:05:00am

Warm up time
= 30 seconds

- data is recorded at regular intervals.

Log Period
Recording Period

Sampling Period
Stay Awake or Power

Down and Warm Up
Instructions

The user selectable warm

up time can be used to

allow sensors to stabilize

before recording begins.

W

Recording

W

Waiting

31

3 Level Based Trigger

specified level.

- data is recorded if a sensor reaches a

e.g. Trigger if lake
temperature is above 6
below 2

Outside Window Level

O

C.

Available level trigger opt ions .

Trigger if signal is: Above Below Inside Outside
Level(s)

The Level based triggering option also allows for two more
types of triggering to be used:

•

Pre-Triggering

•

Post-Triggering

o

C or

32

4 Pre-Trigger

- record data for a specified time before a level

trigger occurs (level trigger must also be selected).

Chan 1

e.g.

Crater Lake

Water
temperature

What is the temperture of a
crater lake 1 hour before the
earth temperture reaches

o

10

C?

Chan 2
Earth
temperature

Instrument Settings
Channel 1 – No trigger setting
Channel 2 – Trigger if temperature level is

above 10

o

C

Pre-Trigger set to 1 hour
Sample period = 1 second

Quake triggers data logger

Record for 2 hours

Pre-trigger Data after quake

Days/weeks etc. 1 hour data

Press

recorded before
quake

2 hours data recorded
after quake

Once Pre-trigger is set, the d ata logger can be left for da ys, weeks
etc. When the specified trigger level occurs, pre-trigger data is
already saved in memory.

33

5 Post Trigger

- start recording data to mem ory after a specified

time has elapsed once a level trigger has occurred.

Trigger occurs

Data recorded

Press

6 Enable Channels

record.

Note

: • Faster sampling rates are available if fewer channels

are selected.

• Less memory is used if few channels are enabled.

7 Sampling Period

Water

temperature

Channel 1

Sample

recorded to

memory

Post-trigger time

- select the channels you would like to

- the amount of time between samples.

1 second
sampling

period

Note

: There is a fraction of a second delay between channel 1, 2, 3

1 second
sampling

period

1 second
sampling

period

etc. recordings.

34

7 Record For…

samples to take before recording automatically stops.

Note

:If “Auto Repeat Recordings” (under the file menu) is

the amount of time to record for, or the number of

selected and level trigger is also selected, a new file will
be created as soon as the recording time has finished.
This way you can get a separate file every time a lake
level goes into flood for example.

35

2.3.2 Setting Display Op ti ons

To specify how measured data is to be displayed:

• Access the main menu (see section 2.1.2).

• To display measured data in the form of text, press Display !

Text. The real-time readings are displayed for each enabled
channel.

• To display measured data in a text with minimum and maximum
values, press Display ! Min/Max.

• The min and max values are reset whenever a new recording is
started, or

• To edit the measurement unit for a channel, press Display !
Edit Units… In the Enter Channel Unit window, select the

channel by pressing
unit (see section 2.1.5).

• To edit the name of a channel, press Display ! Edit Names…
In the Enter Channel Name window, select the channel by

pressing
section 2.1.5).

is pressed.

or and then edit the name of the

or , and then edit the name of the channel (see

• To swap temperature units between degrees Celsius, degrees
Farenheit and User defined setup, pres s Display ! Temperature

Units:

Note

: It is possible to change the displayed Temperature units

during a recording by using the Display menu, but any
triggers that have been applied to Temperature channels
may accidentally trigger. The trigger levels that have been
set for any of the temperature channels are not converted
when you change your selection of Temperature units.

36

2.3.3 Graph Controls

To view an xy-graph:

• Press Display ! Graph.

The following controls are available wh en viewing a graph. When a
file is being played back, additional cursor and zoom controls are
available.

Option Meaning

Active cursor moves right
(Playback only)*

Active cursor moves left
(Playback only)*

Toggle active cursor (Playback only)*

Zoom In and Out between cursors
(Playback only)*

KEYS 1 – 9, 0

(quick key press)

(quick key press)

(continuous key press)

(continuous key press)

Select channel 1 to 0
Increase y-axis scale

Decrease y-axis scale

Scroll graph up

Scroll graph down

Resets graph settings to default

37

*(Playback only) - Cursors are available only when playing back a
file. For more inf orm ation on Playback mode please s ee sec tions 2.5
and 2.6.

o

Ch1 123.8

C !! 257

Channel being

examined

Note

: To leave the “Playback ” environment either press

Value at

active cursor

or select Display ! Exit Playback.

Sample

number at

active cursor

38

2.4 RECORDING D ATA

2.4.1 Setting Up the Fi l ename

The data recorded in a single recordi ng session is stor ed as a file.
The name of the f ile into which data wil l be recorded is d isplayed at
the bottom of the data-display screen.

• T o edit the nam e of the file, pr ess File ! New Recording. In the
New Recording Setup window, select Filename and edit the
filename in the New File Name window (see section 2.1.5).

• File nam es are automatically num bered after the first recording
e.g. Lake level, Lake level 1, Lake level 2… etc.

2.4.2 Choosing a Folde r

For identification purposes, it is convenient to group files that are
related under a common folder.

• To choose the folder under which the recording file is to be
grouped, press File ! New Recording. In the New Recording

Setup window, select Folder, and in the Save Recording in
Folder… window, select the folder.

• If a new folder is require d, pr ess Folder in the Save Recording in
Folder… window, sel ect the new f older, and then press Rename

to edit its name. Then select the newl y created folder in order to
place the recording file in it.

39

2.4.3 Starting a Record i ng

• From the main display screen press

Data will be recorded and displayed according to how the inputs,
trigger, and display options were set up. The sample number is
updated on the bottom right of the screen as the samples are
collected.

The data is recorded into the file and f older you chose earlier (the
name of the file is displayed at the bottom of the screen).

to start the recording.

2.4.4 Auto-Repeating Re cor dings

If recordings are le vel-triggered, the ins trument can be instr ucted to
take recordings repeatedl y. This is us eful for captur ing the next level
trigger event.

To auto-repeat level-triggered recordings:

• Press File ! Auto Repeat Recordings to check (!) the option.

• To stop a recording press the

key.

40

2.4.5 Chained Recordin gs

The instrument has a maximum capability of approx 60,000 data
points per individual recording. When this size is reached, another
file is created and recording c ontinues witho ut intervention or loss of
data.

Note

: Each sample of each channel uses up a data point, e.g. a 4

channel recording of length 10,000 samples uses up
40,000 data points.

Chained recordings are denoted with an x/ y extens ion. Which can be
interpreted as the xth number part of a total of y parts.

e.g. Untitled 1/2

Untitled 2/2

When transferring to
then the chained recordings will be recombined into a single long
recording.

MAS

, if the entire folder is selected and sent,

41

2.5 PLAYING BACK

To play back a recording:

• Press File ! Examine files…

• In the Playback File window, select the recording to be played

back and press

Note

: Recordings can be played back in either the text, bar or

graph display modes, irrespec ti ve of the mode that the y were
recorded in.

• In the data-display screen, press
the samples and

the beginning of the recording ( the sample number is dis played
at the bottom right of the screen). The instrument beeps when
you have reached the first and last samples.

• T he display type and units can be altered i n the playback, any
changes made during p layback are only for the durati on of the
playback. This all ows recordings to be viewed in a n alternative
view from the way that they were recorded.

• T o exit Playback mode either press
Playback.

Note

: In the Playback File window, there are also options to

rename or erase a folder or recording, create a new folder
and collapse or expand the data tree.

42

.

to move forward through

to move backwards. Press to return to

or Display! Exit

2.6 FILE UTILITIES

In the file selection window (File!Examine Files) the following
utilities are available:

Option Meaning

1. Shrink /
Expand

2. Folder

3. Rename

4. Copy

5. Lock

6. Erase

7. Snd to PC

or

Shrinks or Expands the File Folder structure to
make selecting a folder easier and quicker.

Creates a NEW FOLDER.
Renames a file or a folder.
Copies the selected file’s s etup (channel names,

units, trigger type etc.) so that the next
recording’s setup is the same.

Prevents a file from being erased with the
“ERASE” option. T his option can be used to loc k
your recordings so th eir setups are protected a nd
can then be copied at a later date. WARNING:
File! Erase All Memory will erase a locked file.

Erases the selected f ile or folder (does not erase
locked files/folders).

Sends the selected file or folder to the PC (see
section 4).

Selects a file for playback or selects the active
FOLDER to record int o (if Window Title is “Save
Recordings in Folder…”).

43

2.7 OUTPUTTING SAM PLES

FROM RS232

Press File!Output Samples to RS232 to send real time data in
ASCII format from the instrument’s RS232 port.

This data can be captured by a PC (e.g. using HyperTerminal).

Channel Number Values

14.5000

6.8251

100.02

99.800

4.6000

6.8252

100.00

200.00

Format of Data

<channel number><space><channel value><CR><LF>
(8 data bits, no parity bit, 1 stop bit)

The default bit rate is 9600 bits/secon d, but it is p ossible to ha ve the
instrument send data at 57600 or 19200 bits/second.

Approximately 200ms between
channel readings

Cycle continuously repeats

To select a higher rate, send the instrument approximately 20 ’Q’
characters (e.g. pres s Q in HyperTerminal 20 times ) at the bit rate
you desire.

Note

: • ‘∗’ characters will be echoed while the ‘Q’ characters are

being transmitted.

• Operating the instrument’s menus may temporary
disrupt the transmission of samples from the RS232
port.

• Transferring files to
transmission.

• When using Timer Trigger, COMs will default to 9600
bits/second after the first wakeup.

44

MAS

cancels RS232 sample

UTILITIES

This section outlines the procedure f or perform ing utility funct ions on
your instrument . You will learn to:

• reset the instrument ;

• adjust the instrument LCD;

• set the instrument clock;

• manage the instrument battery pack;

• manage memory usage on the instrument ; and

• troubleshoot the instrument .

WARNING

: Read section 1.4 before operating your instrument .

45

3.1 RESETTING T HE
INSTRUMENT

Sometimes, due to electrostatic discharge exceeding 8kV, the
instrument may not respond to any key presses (including

presses). In such cases, it is important to reset the instrument as
soon as possible. To reset the instrument :

• Press

simultaneously, once the initialization screen has been
displayed.

Once reset, the instrument displays the Initialization screen and
resumes normal operation. Res etting the instrument does no t erase
data or settings stored in the instrument .

while holding down and then release th em both

46

3.2 ADJUSTING L CD

3.2.1 Adjusting Contras t

• Press Sys ! LCD-Contrast…

• To darken the LCD, press

• To restore the default contrast, press

If the screen flickers when cursors are moved, make the LCD darker.

. To lighten it, press .

then .

3.2.2 Turning Backlight On

To toggle the backlight ON and OFF press then .

47

3.3 SETTING CLOC K

3.3.1 Checking Date an d Time

• Press Sys !Clock.

All recordings are date and time stamped according to the clock
shown in the Date & Time window.

3.3.2 Setting Date and T ime

• Press Sys ! Clock.

• To cycle to a particular field, press

• To edit the value of a field, press

• Press

If the am/pm hour f ormat is chosen, the hour s witches back to 1 at
the thirteenth hour. If the 24h format is chosen, the hour c ontinues
incrementing until 23 before switching back to 0.

48

when you have finished.

.

and .

3.4 MANAGING BA TTERY

3.4.1 Instrument Battery

The instrument is powered by a rechargeable Nickel-Cadmium (Ni­Cad) batte ry pack. The normal operating voltage is 6.0 to 8.5 Volts.

Some automatic features have be en built into the inst rument to help
ensure that the battery pack is alwa ys suf f ic ientl y charge d. Be lo w 6.6

Volts, the instrument displays a flashing
corner of the screen and beeps once every minute as a reminder
that the battery pack needs to be charged. Below 6.1 Volts, the
instrument automatically turns off the backlight to prevent further
power draining. Below 80% battery capacity, the instrument
automatically begins to charge the batter y pack (if external power is
supplied). At 5.5 Volts, the instrument automatically powers down.
The power saver is anot her f eatur e tha t he lps c o nser ve po wer on the
instrument – see section 3.4.6.

There is also an internal backup battery that backs up data and
settings in the instrument in the event that the battery pack is
detached from the instrum ent . The backup battery is kept char ged
by the battery pack if the battery pack is functioning normally.

icon at the bottom right

WARNING

more than 2 hours as this will drain the backup battery, thereby
causing data and settings to be lost.

The battery pack can be charged by supplying 13.5 ± 1.5VDC, 1A
power to the instrument charger socket. The power transformer
supplied in the k it provides t his DC voltage . The optio nal car ad apter
charging lead may also be used to charge the battery pack in a
vehicle with a 12-Volt negative-chassis power system.

WARNING

transformer used is an approved ins trument po wer transform er (13.5
± 1.5VDC, 1A output) and that the voltage and frequency of your
mains AC power match that of the power transformer.

: Do not detach the ba ttery pack from the instrument for

: Before charging the batter y pack, ensure that th e power

49

3.4.2 Checking Battery C apacit y

• Press Sys

The remaining battery capacity and voltage are displayed.

3.4.3 Charging Powered - up instrument

WARNING

• Plug the instrument power transformer into a standard power

outlet and its connector to the instrum ent charger socket. If the
battery capacity is less than 80%, charging begins automatically.

• If charging does not begin automatically, press Sys ! Charge

Batt Charging, as ind icated b y the

begins.

If the
on. Charging stops automatically when complete or you can press
Sys ! Charge Batt to stop it. A full charging cycle takes
approximately 150 m inutes. All other functions are usable while the
battery pack is being charged.

: See the warnings in section 3.4.1.

icon in the dropdo wn menu,

icon is not displayed, ch eck that the mains power is turned

3.4.4 Charging Powered - down

instrument

WARNING

• Plug the instrument power transformer into a standard power

outlet and its connector to the instrument charger socket. The
instrument powers up and charging, as indicated by the flashing
“CHARGING” message beside the Charge Batt option in the Sys
dropdown menu, begins.

: See the warnings in section 3.4.1.

50

If the instrument does not power up, reset the instrument (see
section 3.1), or unplug the power transformer connector and re-plug
it in. See also section 3.4.3 notes.

51

3.4.5 Reconditioning Ba t tery Pack

WARNING

Battery reconditioning is the process of first discharging and then
charging batteries. It reduces the undesirable memory effect in Ni­Cad batteries. The batter y pack should be reconditioned when it is
first used (for its capacity to be displayed correctly) and monthly
thereafter (to prevent battery d egr adatio n). T o recondi tion th e batter y
pack:

• Plug the instrument power transformer into a standard power

outlet and its connector to the instrument charger socket.

• Press Sys ! Recondition Batt.

After discharging the battery pack, the instrument automatically
proceeds to charge it. See also section 3.4.3 notes.

: See the warnings in section 3.4.1.

3.4.6 Power Saver

Everytime the instrum ent is powered up, the power sa ver – a power
saving feature – is automatically turned on. With the power saver
turned on, the following occurs autom atically if no keys are pr essed
for a period of time, after 8 minutes the LCD is turned off (but any
key press will turn it on a ga in) a nd af ter 1 5 minutes, the instrument is
powered down. To turn the power saver on or off:

• Press Sys ! Power Saver.

52

3.4.7 Replacing Battery Pack

• Lift the boot stand.

• Unscrew the battery pack and screw in the new one using a

suitable screwdriver or coin.

WARNING

not over-tightened – to the instrument .

: Ensure that the battery pack is securely fastened – but

53

3.5 ERASING MEMO RY

WARNING
ALL

recordings in the instrument .

Before erasing data, you may wish to archive it on your PC (see
section 4.3). To erase all folders and recordings:

• Press File ! Erase ALL Memory…

• In the Erase All ! window, press

for the data to be erased.

To erase only one particular recording or folder, see section 2.5.

WARNING:

default settings. All locked folders and files will be erased.

: Following the proce dure below erases

and together and wait

Erase All Memory will reset the instrument to factory

ALL

folders and

54

3.6 TROUBLESHOO TING

3.6.1 Power Problems

Symptom Cause Remedy

Instrument cannot powerupLow battery capacity

Electrostatic discharge
(ESD) exceeding 8kV

Instrument powers down
when backlight turned on

Instrument powers down
shortly after powering up

Flashing icon and
beeping every minute

Low battery capacity Charge battery pack

Low battery capacity Charge battery pack

Low battery capacity Charge battery pack

Charge battery pack
Reset instrument

3.6.2 Data Problems

Symptom Cause Remedy

Data lost when battery
pack detached for more
than 2 hours

Data lost when battery
pack detached for less
than 2 hours

Flat backup battery Charge battery pack

Faulty backup battery Send instrument

authorized dealer for
servicing

to

“Insufficient memory”
displayed

Measured data seems
incorrect

No memory sp ace left
for recordings

Sensor wired wrongly

Faulty sensor

Erase obsolete
recordings (transfer to
PC first if necess a r y)

Wire as recommended

Replace sensor

55

3.6.3 Data-Transfer Pro b lems

Symptom Cause Remedy

“No PC ?” displayed, and
data cannot be transferred
to PC

OM-3000
transfer data and “Transfer
failed” or “
Dialog” displayed on PC

MAS

MAS

unable to

Error

Data-transfer cable not
properly connected

Data-transfer cable
connected to wrong PC
COM port

Baud rate setting OM-

MAS

3000

Baud rate setting OM­3000

MAS

too high

too high

Re-secure cable
connections

Test COM port
availability and use
available port

Select a lower baud rate
in OM-3000

Select a lower baud rate
in OM-3000

MAS

MAS

3.6.4 Other Problems

Symptom Cause Remedy

Instrument does not
respond to any key press

“Module fault” displayed Module‡ damaged Send instrument to

Electrostatic discharge
exceeding 8kV

Reset instrument

authorized dealer for
servicing

“Switch off then connect
module” displayed

Module not properly
plugged into instrument

Power down instrument
then re-secure module,
making sure not to bend
the connection pins

The “module” is the measurement hardware unit of the instrument . It has the six

‡

temperature measurement channels and 4 voltage measurment channels att ached to
it and is fastened to the rest of the instrument

by means of two M3x0.5x12mm screws.

56

ANALYSIS

SOFTWARE

Recordings made on your instrument can be transferred to the
software running on a Windows

M

easurement Analysis Software.

analyse, print & export your recordings.
It is assumed that the user of

Windows
Windows
commands.

Note

WARNING



commands. Please ref er to the appropriate lit erature on



if clarification is needed on mouse and keyboard

Throughout
a comprehensive topic-specific
the right mouse but ton an ywhere in
up menu of the applicable commands.

: Read section 1.4 before operating your instrument .

MAS

, pressing F1 on your keyboard will bring up



based PC.

MAS

can be used to stor e, graph,

MAS

is already familiar with basic

Help screen

MAS

MAS

stands for

. Also, clicking

will bring up a po p-

MAS

57

4.1 INSTALLING O M-3 000

MAS

4.1.1 License Agreemen t

Please read the license and warrant y agreement printed on the CD
cover found in the jewel c ase that t he

MAS

is licensed for individual use and for installation on one
computer. The software contained on the CD-Rom remains the
intellectual proper ty of OMEGA Engineerin g who retain the tit le and
ownership of the software.

4.1.2 PC System Requi r ements

The following are the minimum system requirements for installing

MAS

:

• Pentium or better

• 32MB RAM (64MB recommended)

MAS

CD-Rom was suppli ed in.

• 10MB hard disk space

• CD-Rom drive



• Windows

• Windows

• Windows

• An unused COM Port for communication with the instrument

58

95, 98, Me, NT or 2000 operating system



compatible displa y and print er



compatible mouse or other pointing device

4.1.3 Installing OM-300 0

• Close all programs on your PC.

MAS

on a PC

• Insert the

• Wait for the

OR
Run the

• Follow the instructions given to complete the installation.

MAS

CD-Rom into the CD-Rom drive.

MAS

Installation program to automatically start.

MAS

Install.exe program located on the CD-Rom.

59

4.2 STARTING UP

MAS

4.2.1 Starting up

• Click Start ! Programs ! OM-3000 ! OM-3000 MAS 5.00

4.2.2 Configuring PC CO M port

• To allow data transf er between the instrument and t he PC, you

must first configure your PC COM port as follows:

• Connec t the instrument to one of the COM ports usin g the data-

transfer cable and power up the instrument .

• Click Tools menu! Configure COM port.

• Select the COM port that the instrument is connected to.

• Select a baud rate. The baud rate is t he speed (in bits/secon d) at

which data is trans ferr ed. The lo wer t he baud rate, the less lik ely
are data-transfer err ors. Automatic is the default cho ice as it is
sufficient for normal transfers.

• Click Test port

• Click Yes in the Confirm window to test the connection.

Connection failure may be due to the selection of the wrong
COM port in
connectors being not p lugged in properly, or the PC serial port
being not set up properly. If the con nection is good, co ntinue as
follows:

• Click OK in the sec ond confirm windo w to acknowledge that t he

instrument is attached to the COM port.

• Click OK to leave the
60

MAS

, the instrument being not powered up,

MAS

Configuration window.

4.3 TRANSFERRIN G DATA

TO THE PC

Data transferred to the PC is stored in
and have the .das extension.
To transfer data from the instrument to the PC:

• Turn on the instrument Check its battery capacit y and if less than

30%, charge the battery pack.

• Connect the RS232 por t of the instrument to the configured PC

COM port using the data-transfer cable. On the PC click the
Receive button.

• On the instrument , press File menu! Examine F iles… Use the

arrow keys to select the individual recording or folder to be
transfered. If a folder is highlighted, all recordings within the
folder will be transferred.

• Press

Once the data-transfer is complete, the data will appear in the
current file in
a new file.

• To append more data fr om the instrument to the c ur rent f i le, c lic k

the Receive button.

• Alt ernatively, to receive more data but in its own new file, click

File menu ! Receive from OM-3000 ! Transfer to a New File.

SndToPC to send the selected recording or folder.

MAS

or if no files wer e ope n, the d ata wi ll app ear i n

MAS

files. These are text files

• To save the data in the current file, click the Save button, nam e

the file and click Save. If the file was an already existing file,
clicking the Save button will autom aticall y save the fil e under th e
same name and in the same location on the PC.

61

4.4 MANAGING DA TA

4.4.1 Opening a File

• Click Open button and select the file.

4.4.2 Merging Two Files

• Open one of the files.

• Click File m enu! Import & Merge a file… and select the other

file to be merged into the open file.

The merged data can be viewed but is not autom atically saved on
the computer. To save it, click File menu! Save or Save As.

4.4.3 Using the Navigator

When a file is open, the navigator that consists of two boxes is
displayed on the left side of the s creen. The top box shows all the
folders in the file. The bottom box shows all the recordings in the
selected (highlighted) folder above.

4.4.4 Deleting Data from a Folder

• Select the folder in the Folder section of the navigator.

• Using the navigator, select the individual recordings and/or

channels to be deleted.

• Click File ! Delete, or press the Delete key. You will then be

prompted to confirm that you wish to delete the selected
recordings/channels

62

4.4.5 Editing Recordin g Details

• Select the folder, and th en the recordin gs and/or channels to be

edited.

• Click the Info tab to access the Info page wher e you can e dit the

User Details (eg. Company Name, instrum ent serial number…),
Folder Name, and the Recording Details (eg. recording name,

remarks, channel labels and un its …) .

• From the Edit User Details screen there is access to edit the

Default User Details. These values are written to all future

recordings, while they are being transferred from the instrument .

4.4.6 Viewing and Print i ng Data Values

• Open the file and using the navigator, select the recordings

and/or channels to be viewed and/or printed.

• Click the Values tab. T he data in the selec ted recordings and/or

channels can now be viewed.

• To change the value in a cell, clic k the cell and type in the new

value.

• To reduce the amount of data by averaging, click the Average

button.

• To print the data, click the Print button.

• To copy the values to a s preadshee t progr am , click the Copy (to

clipboard) button, go to the Spreadsheet program and use its'
"Paste" command.

• To print a report on the data, click File ! Summary Report

§

or

Full Report** and s elect the pr int option in the Data Summary or
Report Generator window that appears.

§ The Summary report produces a data summary about the selected
recordings/channels. For more information consult the

MAS

help file.

63

4.4.7 Exporting data

• In the Navigator select the folders or r ecordings to be exported

as a .das file.

• Click File ! Export and select the option required.

• Provide the nam e and location of the export file t o be produced

and then click the Save button.

** The Full report produces at printout of the pages selected in the report generator
window. For more information consult the

MAS

help file.

64

4.5 CALCULATIN G DATA

You can perform calculations on your r ecorded d ata b y creati ng ne w
"calculated" channels:

• Open the file and using the navigator, select the recordings

and/or channels to be used in calculations.

• Click the Values tab to displa y the data and click the Calculate

button to access the Calculate window.

• Each channel is automatically given a "

used to identif y the channel. It is a lett er of the alphabet t hat c an
be used to reference the values of a recording for use in
calculations.

• Expressions can then be derived using the provided functions

and the channel tags

eg. TempChange = ChangePerHr(B) with units degC/hr

This example will create a channel called
"TempChange" which is calculated as the rate of
change per hour of the channel which has tag 'B'.

• Constants can also be used in calculations. You may need to

use constants in your expressions, for example:

To find the "difference from the mean value" for a particular channel,
say the channel represented by "

A constant should be defined to provide the mean value of
channel 'D', "K0 = Mean(D)"

This constant is then used in the express ion,
"DiffFromMean = D – K0"

††

.

tag

" 'D'.

tag

" character that is

See Appendix OM-3000

††

MAS

MATH for a complete list of functions available.

65

4.6 PLOTTING DAT A

4.6.1 Plotting Single an d Individual

Charts

• Open the file and using the navigator, select the recordings

and/or channels to be plotted.

• Select the Chart tab and click the Plot button. You can also plot a

recording or channel by double-clicking it in the navigator.

• To display the selected recordings and/or channels on individual

charts, click the Individual button.

• To change the format of charts, click the Adjust button to access

the Adjust Axes & Colors window. This window allows for
changes to be made to the axes and colors of the plotted
recordings displa yed on the chart.

• To clear all plotted recordings, click Chart menu ! Clear Chart.

To retain existing plots when adding to the chart, click the Hold
button. A maximum of 16 plots can be displayed at a time

To enlarge a chart, you can hide the legend by clicking Chart menu

! Show Legend. You can also Hide the navigator by clicking
Window menu ! Show Navigator.

66

4.6.2 Zooming & Panni ng

To zoom in on any part of a chart:

• Click a point to the left of that part of the chart and drag a

rectangle across and down to the right over the section to be
enlarged (while holding down the lef t mous e butt on) . Re le ase th e
mouse button to perform the zoom.

To zoom in horizontally:

• Proceed as above, but only move the m ouse direc tly up or down

to select the area to be enlarged. Two horizontal lines will be
displayed across the chart to indicate the selection.

To zoom in vertically:

• Proc eed as abov e, but onl y move the m ouse dir ectly lef t or ri ght

to select the area to be enlarged. Two vertical lines will be
displayed across the chart to indicate the selection.

To unzoom from any view:

• Left click on any point in the chart and drag a rectangle up and to

the left to display a rectangle with a cross in it. When the m ouse
button is released all zoom ing will be undone and the char t will
be returned to its original view.

Panning

• T he chart displayed can be dragged i n any direction to dis play

sections that are hidden from the current view. To pan around
the chart click and h old down th e right m ouse but ton in the chart
display. The curs or will turn into a pointing hand icon. Drag the
mouse pointer in the direction that you wish to move the chart.

Note:

If you move the cursor of f the chart, you will have to re lease
the right mouse button and return it to within the chart
boundaries to continue panning.

4.6.3 Printing Charts

• Click Print while the chart is displayed and choose the color

scheme for printin g (e.g. Black & White, Full Color or Color on
White bkgnd)

67

4.6.4 Reading and Comp a ring Val ues

To place cursors on charts to read the data values on curves:

• Plot the recordings and/or channels on a single chart.

• To place a cursor at a particular point on a curve, place the

mouse cursor at that point, follow the curve until a crosshair
appears, and then click the left mouse button. If the default
cursor options are used, the cursor com prises a hori zontal and a
vertical dashed l ine, and the values ind icated by the cursor are
displayed at the edge of the chart next to the dashed lines.

• To move the cursor to a differ ent point on t he sam e curve, pres s

the horizontal arro w k e ys. T o move in small steps , hol d d o wn the
Ctrl key when pressing t he horizontal arrow ke ys. You can also
move the cursor by clicking the left mouse button on the new
point (first allowing a crosshair to appear).

• To move the cursor t o a different curve, push the vertical arrow

keys. Alternativel y, click the left mouse button on the new curve,
or on the appropriate symbol on the legend.

• To place a second c ursor on the chart, place th e mouse cursor

at the point of interes t, foll ow the cur ve u ntil a cros shair ap pears ,
and then click the right mouse button. If the default cursor
options are used, the dif ference be tween th e values indicate d by
the cursors is shown at the t op right corner of th e char t. Curs or A
corresponds to left mouse button and cursor B to the right.

• To toggle the focus between t he cursors, push the spac e bar, a

cursor must be focused before it can be moved using th e arrow
keys. A cursor is focused if it has a rectangular target.

• To clear the cursors, push the Esc key.

• To change cursor options, click Chart menu ! Cursor Options....

68

EXAMPLE

cursors displayed (using the default cursor options).

Each cursor displ ays the x and y axis va lues and the difference in
both the x and y axis values of the two cur sors in the top rig ht hand
side of the chart.

: a two-channelled temperature recording with both

69

4.6.5 Plotting Waterfal l Charts

• Plot the recordings and/or channels on a single chart.

• Click Chart menu ! Waterfall Chart and select the depth

required.

Waterfall charts are useful for trending data behaviour. As on
ordinary charts, cursor and zooming functions can be used on
waterfall charts.

EXAMPLE

to three sets of data pertaining to the same measurement point. It
can be seen that the peak value has a rising trend.

: the four curves on the waterfall chart below correspond

70

4.7 UPGRADING F IRMWARE

When an upgraded instr um ent firm ware versio n is a vaila ble, it wil l be
posted on the OMEGA website. Once you have obtained the
firmware file, the firmware can be upgraded using the
Reprogramming procedure below.

WARNING

• Check the instrum ent battery capacity and if it is less than 30%

charge the battery pack.

• Connect the RS232 por t of the instrument to the configured PC

COM port using the data-transfer cable.

• Po wer up the ins trument and tr ansfer an y data you wish to keep

to

• In

Reprogram window click the Reprogram button! Automatic
search.

: Upgrading the firmware erases all data in the instrument.

MAS

on a PC.

MAS

click Tools menu! Reprogram OM-3000. In the

• Click Select Drive to Search a nd select the drive wher e the ne w

firmware version is located.

71

• Click Start S earch, and when the sear ch is com pleted select the

new firmware file.

• Click Start Reprogram using this file.
Once the reprogramm ing is complete, the instrument will be ep and

the Initialisation scr een will appe ar. If an error oc curs, check that the
data-transfer cable has been connected properly and that the
instrument is powered up.

72

Appendix

SPECIFICATIONS

The following are the specifications for:

• instrument firmware version 2.10

MAS

•
These specifications may be changed in future versions.

software version 5.00

73

Model:

Specifications

Range

T Type Thermocouple
E Type Thermocouple
J Type Thermocouple
K Type Thermocouple

Temperature
Resolution

Temperature Accuracy

Minimum Sampling
Interval

Data Logging

Data Storage Format

Data Storage

Folder Name

Display

Resolution
Viewing Area
Backlight

Reprogramming

Communications

Baud Rate

Channel Organiz a tion
Input Termination

Input Impedance

Isolation

Battery

Type
Voltage
Capacity
Operating Time

Charger & Conditioner

Fast Charge Rate
Discharge Rate

Mechanical

Size
Weight

Environmental

Temperature/Humidity
Operating

Storage
EMC

© 2001 OMEGA Engineering Ltd. The manufacturer reserves the right t o modify specifications

OM-3001-T4

Incorporating 4 Temperature Channels

-418 to +743°F (-250 to +395°C)

-418 to +1823°F (-250 to +995°C)

-346 to +2183°F (-210 to +1195°C)

-418 to +2498°F (-250 to +1370°C)

Above -148°F (-100°C): 0.1°F or °C
At or below -148°F (-100°C): 1°F or °C Effective resolution decreases at or below - 148°F (-

Above -148°F (-100°C): ±0.1% of reading ±0. 9°F ( 0.5°C )
At or below -148°F (-100°C): ±1% of reading ±0.9°F (0.5°C)

Number of channels selected

(user-selectable)

1
2
3
4

Up to 50 named folders
Multiple recordings per folder
Recording length: 1 sample … entire memory

512 kilobytes – approximately 400, 000 indiv idual data points

Up to 16 alphanumeric characters
LCD with graphic capabilities

240 x 128 pixels

4.3" x 2.3" (110mm x 60mm)
Electro-luminescent

Allows internal firmware to be upgraded via built-in serial port

RS232
9600, 19200, 57600 bits per second

Any combination of up to 4 channels for any recording

Sockets accept miniature thermoc ouple twin blade plug Blades spaced 5/16" (7.9mm) center-to- c enter.
Channels 1, 2, 3, & 4: greater than 100k

50VDC minimum Between inputs and

Custom Nickel-Cadmium pack

7.2V nominal
1500mAh nominal
13 hours nominal with backlight off, 7 hours nominal wi th backlight on

Built-in dual rate charger – automatic and m anual c ontrol

0.7A nominal

0.5A nominal

9.7" W x 6.1" L x 3.0" H (247mm x 154mm x 75mm)

4.4lb (2kg)

32°F to 122°F (0°C to 50°C) / 80% RH 32°F to 86°F
70% RH 32°F to 122°F
14°F to 140°F (-10°C to 60°C) / 95% RH
EN50081-1
EN50082-1

Temperature or temperature and

voltage channels selected

(seconds)

0.2

0.3

0.5

0.6

Ω

Remarks

Operating temperature range is determined by
operating
range of thermocouple.

100°C).

Temperature measurement accuracy depends on

and thermocouple accuracy. Only

OM3001-T4

accuracy is given here.

OM3001-T4

temperature 73 ± 9°F (23 ± 5°C), charger off. See
Appendix Optimizing Temperature Accuracy.

Minimum time to scan all
each channel.

Sampling interval is programmable f rom 0.2 seconds
to 60 hours.

User-specified name entered from keypad.
Each recording has unique time/date stamp.
Supports long recordings by chaining 60,000 data
point recordings. Each ample contains one dat a poi nt
per channel.

Non-volatile memory (battery backup). Number of
samples depends on the number of recordings and
the variability of the readings.

Download firmware updates from the Omega
website.

15kV ESD protected. Cable with DB9 connector
included. Automatic baud rate selection.

Terminal-to-terminal.

port. No isolation between channels.

Power transformer (13.5 ± 1.5VDC, 1A output)
included in kit.

2.5 hours for complete charge nominal.
Combats Ni-Cad battery memory effect.

Including protective boot.
Including protective boot and strap.

Non-condensing.
Non-condensing.

Radiated and conducted emissions.
RF field, ESD and fast transient immunity.

selected channels - not

OM3001-T4

OM3001-T4

outputs e.g. RS232

74

Appendix

Application Notes

6.1 Application No te 1

Using the

T4

The
four differential input channels which are multiplexed into the A/D converter.

All channels are isolated from
battery etc. If only one channel is connected, then there is no need to
consider the effects of common mode

However, the channels are not isolated from each other. Each channel has
differential inputs (i.e. they measure the voltage between +ve to -ve), which
allows non-isolated thermocouples to be used provided that they are not
connected to electrical conductors of potentials greater than 10VDC relative
to each other. Connecting non-isolated thermocouples to electrical
conductors of different potentials introduces an error called “common mode
error”.

WARNING: Do not connect a non-isolated thermocouple to any
electrical conductor of voltage greater than SELV relative to earth (see
Section 5). The isolation within the
protect the user from hazardous voltages.

To avoid damage:

thermocouple input pins (this would damage the protection diodes in the
multiplexer – see the “T4 module equivalent input circuit” diagram below).
Example: To measure the temperatures of both terminals of a 12V battery it
is essential to use isolated thermocouples.

Module’s Inputs

T4

module’s internal circuitry measures low level signals from one of

OM3001

Do not apply more than 10V between any of the 4

internal circuitry and the serial cable,

voltage

or AC noise.

module is not intended to

T4

75

To minimize common mode errors:

Ensure the voltage difference between
channels is as small as possible. The best way to do this is to electrically
isolate (but thermally couple) the thermocouples from voltage sources. For
example, when measuring the temperature of both sides of a power diode
(less than 1V across it) that is continuously conducting, it is alright to solder
the thermocouples on. If however the diode is rectifying AC, at least one of
the thermocouples needs to be electrically isolated.

To avoid problems with common mode noise:

(See Application Note 2)
When isolating thermocouples, ensure that the insulation impedance of this
isolation is significantly higher than the

OM3001

’s input impedance (for AC
signals too). If this is not so, common mode voltages applied may be larger
than when they were not isolated. Example: thermocouple runs, when
isolated, may act as aerials and pick up large AC voltages (say 50VAC)
which would overload the input multiplexer, resulting in erroneous readings
or even damage.

Module Equivalent Input Circuit

T4

Protection

Diodes

+5V

Four dedicated
thermocouple
inputs like this

1nF
1nF

Module Isolated Ground

-5V

Switch
Array

A/D

Inputs

150k

equivalent input

structure

+

-

Ω

76

Example on Application Note 1:

Measuring case temperature of both
sides of a continuously forward conducting power diode while it is operating
at SELV (safety extra low voltage).

Thermocouple

1234

++++

See MENU for Thermocouple Types

77

Application Note 2

Grounding

In an industrial environment, it is common to have AC and/or DC voltages
between conductive surfaces that are not bonded together. Conductors that
are assumed to be isolated may in fact have a DC leakage, a 50Hz/60Hz AC
voltage from inductive or capacitive coupling, or a continual presence or
bursts of r.f. voltage (emc).

In such an environment, it is recommended that the metal surface to which
the thermocouple is connected, be grounded.

Example on Application Note 2:

surfaces in a noisy environment.

Metal Surface

Metal Surface

Connecting thermocouple to conductive

Thermocouple 2

Ground

Thermocouple 1

Ground

1234

See MENU for Thermocouple Types

78

Appendix

Optimizing Temperature

Accuracy

For optimum accuracy when measuring temperature, the
internal temperature needs to be stabilized.

This is best achieved by connecting the thermocouple, turning the

instrument

Begin your actual measurement or recording immediately after the 30-minute
stabilization period.

For optimum accuracy, the battery charger should not be operated while
measuring temperature.

on and then leaving it on for 30 minutes‡‡.

instrument

The “power saver” must first be turned off – see Section 3.4.6 for more details.

‡‡

79

80

Appendix

OM-3000

MAS

The following are the mathematical functions and operators that can be used

MAS

in OM-3000
The symbols A,B,C,… represent channel tags; and L1, L2, …, Ln represent

logical expressions (e.g. int(A) > 3).
The notation used for functions and operators is similar to that used in

common computer-programmin g langu ag es and spreadsheet programs.

calculations.

MATH

81

8.1 FUNCTIONS

8.1.1 Mathematical Fun c tions

Function Meaning

Abs(A) Absolute value
Cos(A) Cosine
Deg(A) Convert from radians to degrees
DegC_to_DegF(A) Converts Celcius to Fahrenheit
DegF_to_DegC(A) Converts Fahrenheit to Celcius
Exp1 Base of natural logarithm, e (constant)
Exp(A) Exponent
Frac(A) Fractional part
Int(A) Integer part
Ln(A) Natural logarithm
Log(A) Base 10 logarithm
Max(A, B, … ) Return the maximum value
Min(A, B, … ) Return the minimum value
N Sample number (starting from zero)
Pi
Power(base, power) base to the power of power e.g.

Rad(A) Convert from degrees to radians
Round(A) Rounded value
Sgn(A) Sign (-1 if negative; +1 if positive; 0 if zero)
Sin(A) Sine

(constant)

π

Pow(A,3) gives A
Pow(3,k1)
Pow(A,B)

3

82

Function Meaning

Sqr(A) Square
Sqrt(A) Square root
Tan(A) Tangent
ChangePerDay(A)
ChangePerHrs(A)
ChangePerMin
ChangePerSec
SumOverDays
SumOverHrs
SumOverMins
SumOverSecs

Rate of change (differentiation)
e.g. If channel ‘A’ changes smoothly from 10 to

25 over a 1 minute period, then
ChangePerMin(A) will be 15 over that period.

Summation over time (integration)
e.g. If channel ‘A’ is a 2hr recording with all

values = 3.5, then SumOverHrs(A) changes
smoothly from 0 to 7 over the recording.

83

8.1.2 Iterative Function s

The following iterative functions can be used for constants only. Cell level
expressions cannot contain iterative functions.

Function Meaning

Count(A) Number of sample s
Maxsample(A) Maximum sample value
Mean(A) Mean
Minsample(A) Minimum sample value
Stddev(A) Standard deviation
Sum(A) Sum

8.1.3 Logical Functions

Function Meaning

AND(L1, L2, …, Ln) Logical AND e.g.

AND(n = 10, k2 > 0.5, k3 > 0.5, k2 <> k3)
False Logical constant, has va lue 0
OR(L1, L2, …, Ln) Logical OR e.g.

OR(k0 = True, k1 < 3, n >= 30)
True Logical constant, has value 1
AOR(L1, L2, …, Ln) Logical AOR (exclusive OR) e.g.

AOR(k0 = True, k1 < 3, n >= 30)
NOT(L1, L2, …, Ln) Logical NOT e.g.

NOT(k1 =True, k2< 10, n>30)

84

8.1.4 Condition al Funct i ons

Function Meaning

IF(L1, true result, false result)

If logical expression L1 is true,
execute true result, otherwise
execute false result e.g.

IF(k2 > k3, k2*A, k3*A)
IF(k0 = True, n, n*2)
IF(n < 10, n, Log(n))

8.1.5 Date and Time Fu n ctions

In OM-3000
floating-point number. The integer part of the number represents the date: it
is the number of days since the first day of 1 AD. The fractional part of the
number represents the time: it is the proportion of time that has passed since
the beginning of the day.

Function Meaning

Date(year, month, day)

Time(hour, minute, second, ms)

Elapsed(sample number)

SampleDate(n) Date of the nth sample
SampleTime(n) Time of the nth sample

MAS

, the date and time value of when a sample is taken is a

Return the date in
format e.g.

Date(1999, 07, 25)
Return the time in

format e.g.
Time(16, 59, 31, 965)
Return the date and time of the

sample in
DAT(36)

OM-3000

OM-3000

OM-3000

MAS

format e.g.

MAS

MAS

85

8.2 OPERATORS

8.2.1 Logical Operators

Operator Meaning

< Less than
<= Less than or equal to
<> Not equal to
= Equal to
>= Greater than or equal to
> Greater than

8.2.2 Arithmetic Operat or s

Operator Meaning

+Addition
– Subtraction
/ Division
* Multiplication

The order of precedence is as in standard arithmetic (i.e. /, *, +, –). An
operand between two operators of different precedence is bound to the
operator with higher precedence. An operand between two equal operators
is bound to the one on its left. Expressions within parentheses are evaluated
before being treated as a single operand.

86