Omega Products OM-3002 Installation Manual

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Owner’s Manual

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owners.

Revision 270201



Contents

1. INTRODUCTION..............................................................................................4

2. FEATURES.........................................................................................................4

3. STANDARD ACCESSORIES...........................................................................4

4. OPTIONAL ACCESSORIES............................................................................5

5. SAFETY NOTES................................................................................................5

6. UNIT START-UP AND INITIALIZATION....................................................5

7. GENERAL OPERATION .................................................................................6

8. DATE AND TIME..............................................................................................7

9. BATTERY MANAGEMENT............................................................................7

10. MEASUREMENT SETUP.............................................................................10

11. MEASURE WITHOUT RECORDING........................................................11

12. NEW RECORDING.......................................................................................13

13. REVIEW DATA SET.....................................................................................16

14. MEMORY MANAGEMENT........................................................................18

15. TROUBLESHOOTING.................................................................................20

16. ANALYSIS SOFTWARE ..............................................................................21

17. INSTRUCTIONS............................................................................................21

18. INSTALLING

19. STARTING UP

20. TRANSFERRING DATA TO THE PC........................................................25

21. MANAGING DATA.......................................................................................26

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0$6

.......................................................................................24

.......................................................................23

22. CALCULATING DATA................................................................................ 28

23. PLOTTING DATA .........................................................................................29

24. ZOOMING & PANNING..............................................................................30

25. PRINTING CHARTS.....................................................................................30

26. READING AND COMPARING VALUES ..................................................31

27. PLOTTING WATERFALL CHARTS.........................................................33

28. UPGRADING FIRMWARE..........................................................................34

29. APPENDIX 1 SPECIFICATIONS................................................................35

30. APPENDIX 2

31. APPENDIX 3 APPLICATION NOTES....................................................37

32. APPENDIX 4

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MATH........................................................41

CONNECTOR DIAGRAM .....36

1. Introduction

THIS MANUAL COVERS MODEL:

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The

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channels of temperature measurement for temperatures ranging from -200 to +850°C (-328 to +1562°F) depending on RTD sensor type.

in the

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allows the user to simultaneously take six

2. Features

24-bit A/D converter providing high precision measurements

128 kilobyte non-volatile memory capable of storing 100,000 sample points

User-reprogrammable

240 x 128 pixel graphical liquid crystal display (LCD)

Electro-luminescent LCD backlight

Built-in battery charger and conditioner

Ni-Cad battery pack

RS232 interface

Battery-backed clock / calendar

Time and date stamped recordings

& &

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: Windows

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internal firmware

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based

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3. Standard Accessories

The

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AC/DC power transformer for battery charging

RS232 serial interface cable

Owner’s manual (incorporatin g

kit consists of the following: main unit

for temperature recording

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: Windows

based

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)

4. Optional Accessories

Pt100 RTD sensor

Car adapter charger lead

Soft carry case

5. Safety Notes

Warning:

To avoid damage to the

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and electrical shock do not allow more than 10VDC between RTD sensor inputs and do not connect any probes or sensors to any live surface (voltage which exceeds 50VDC or 32VAC or the “safety extra low voltage” (SELV) defined by your local power authority).

6. Unit Start-up and Initialization

Note: Before powering up the

LQSXW PRGXOH

tightened (but do not over-tighten).

PRESS the

confirming the firmware revision number and the current (

). If the

57'

to power down the

PRESS the

8 function choices, in addition to LCD screen contrast adjustment. Pressing

[MENU]

from most screens returns you to the Main Menu screen.

are attached securely to it. Ensure that the screws are

[ON/OFF]

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[MENU]

button once. The Main Menu screen will appear displaying

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button. The does not recognize the

and re-secure the

LCD Screen Contrast

From the Main Me nu screen, PRESS and HOLD the

desired contrast is achieved.

To return to the default contrast setting, PRESS [SHIFT] then [RESET].

, ensure that the battery pack and

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Initialization screen appears,

LQSXW PRGXOH

[

] or [

, PRESS

installed

[ON/OFF]

] keys until the

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The LCD contrast (which varies with temperature) i s auto matically comp en sated based on the internal temperature of the rapidly changed, the automatic compensation may not ensure optimum contrast. Typically, the default contrast is optimal if the to stabilize.

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. However, if the LCD temperature is

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temperature has been allowed

HELP

Help instructions are av ai la ble at som e s cre ens by pressing

[SHIFT]

then

[HELP]

7. General Operation

Backlight

Once the

to turn the backlight on or off.

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is powered up , PRESS

[SHIFT]

then

[LIGHT]

from any scr een

If the battery level is less than 20%, turning the backlight on may cause the to turn off automatically. The backlight draws a relatively high current and may drain a nearly-flat battery quickly. To check the battery level, see Section 9.

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Power Saver

Every time the default.

With the “power saver” mode turned on, the LCD and backlight (if it is on) will automatically turn off after 8 mi nut es if no keys are pressed (although the still be functioning). If any key is then pressed, the LCD and backlight (if it was on before) will turn on again.

If the “power saver” mode is turned on, the 15 minutes if no keys are pressed.

will shut off – all

To turn the “power saver” mode off, ac cess the Main Menu screen and press

•

to access the Battery Management screen. Then p ress saver” mode off.

With the “power save r” mode turned off, the the battery voltage drops to 5.5V (after which the

Resetting the

The

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should lose control for some reason (e.g. due to electrostatic discharge exceeding 8kV), the

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keypad is read by an internal microcomputer. If the microcomputer

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on or off.

is powered up, the “power saver” mode is turned on by

20

If a

recording

will not respo nd to an y k ey s and the user will n ot be abl e to turn the

functions will continue.

will shut down automatically after

is being taken, only the display

[2]

to toggle the “power

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will function continuously until

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will shut down).

will

[8]

If this situation arises the batteries from bein g run down (battery curren t is drawn continuously until the circuitry is turned off by the microcomputer). Keystrokes are ignored because the microcomputer does not execute the normal program and instead ignores all keys. Consequently, pressing the

reset

While HOLDING down the

Release the

the hardware:

[ON/OFF]

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should be reset as soon as possible to prevent the

[ON/OFF]

key and normal operation should resume.

key cannot turn off the

[ON/OFF]

key, PRESS and release the

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[RESET]

key.

8. Date and Time

From the Main Menu screen, PRESS

To edit the dat e an d ti me, PRESS the

meaning that it is in edit mode.

]

[

Pressing the

the date rapidly).

Once you have selected the desired date, PRESS the

cause the month field to flash. Again u se the

Repeat the process until you have selected and changed the date and time.

If an error is made, PRESS the

back to each field.

When you have finished, PRESS

[

key changes th e nu m eri c d at e (holding t he k ey down scrolls

[7]

[ENTER]

[MENU]

to access the Date & Time screen.

key. The d ate f iel d be gi n s to fla sh

[ENTER]

]

[

key repeatedly and the prompt will cycl e

to return to the Main Menu screen.

keys to change the month.

key. This will

9. Battery Management

The

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battery pack can be remov ed without loss of any d ata or settings because a secondary internal battery backs up the clock and memory. To minimize current drain on the internal battery, do not remove the battery pack for more than 2-3 hours.

The

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is true, it is recommended that the batteries be recharge d before a recording i s ini tiated if the remaining capacity is below 20%. If the battery voltage falls below 5.5V while the

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is powered by a rechargeable Nickel-Cadmium battery pack. The

will operate normally when the battery v olt age is abov e 6.0V. While this

is operating it will automatically shut down.

If the [ON/OFF] key is pressed and the unit does not appear to activate, it may be that the battery voltage has dropped below 5.5V. If this occurs, recharge the

battery pack (see the “Charging Battery Pack” instructions in this secti on).

Battery Check

From the Main Menu screen, PRESS key [8] to access the Battery Management

screen which displays the battery voltage and the percentage of batt ery capacity remaining.

If the battery pack has been replaced, it is necessary to dis charge and then recharge (i.e. recondition) the battery pack in order for the capacity displayed to be accurate see the “Reconditioning the Battery Pack” instructions in this section.

PRESS the [MENU] key to return to the Main Menu screen.

Charging the Battery Pack

The

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in the kit provides a DC voltage to the charger circuitry. The charger circuitry will

has built-in battery charging circuitry. The power transformer supplied

accept a 13.5 ± 1.5VDC input. When charging from a mains power outlet, use only an approved facilitates charging the system.

Note: Before using the power transformer, ensure th e v o l t ag e an d frequency of y our

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mains AC power matches that of the power transformer.

Charging with Unit Powered Down

Plug the power transformer into a standard AC power outlet.

Insert the connector of the power transformer into the charger socket on the

20

commence chargin g and th e Battery Management s cree n will be dis played.

Note: If the unit fails to power up when a charger is connected, it may be

The battery pack voltage and percent of capacity will be displayed and the

word “CHARGING” will flash indicating that battery charging is in process.

Charging will cease automatically when complete or you can PRESS the

[START/STOP] key while the Charger Control screen is displayed.

AC/DC power transf ormer. T he optional car adapter charging lead

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. If the

necessary to reset the

from a vehicle with a 12V negative chassis power

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was off, it will automatically power up and

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(see Section 7 for reset instructions).

The internal charger will fully charge the

approximately 2.5 hours.

Charging with Unit Powered Up

Plug the power transformer into a standard AC power outlet and insert the

connector of the power transf ormer into the charger socket on the

Access the Main Menu screen by pressing the [MENU] key.

PRESS key [8] to access the Battery Management screen.

PRESS key [1] to access the Charger Control screen .

PRESS key [1] to start charging the

If there is no power coming from the power transformer a flashing message

“NO CHARGER” will appear on the screen. If power is connected correctly the flashing message reads “CHARGING”.

Charging will cease automatically when complete or you can PRESS the

[START/STOP] key at any time while in the Charger Control screen.

The internal charger will fully charge the

approximately 2.5 hours.

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battery pack.

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battery pack in

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battery pack in

Reconditioning the Battery Pack

Battery pack reconditioning means putting the battery pack through a cycle of discharging and charging.

It is necessary to regularly recondition the Ni-Cad battery pack in order to reduce the “memory effect” in it.

The battery pack should be reconditioned:

when you use the

when you have just replaced the battery pack on the

at least once a month (to reduce the “memory effect”).

To recondition the and power applied. D i s char ging and /or charging can on ly be c arr ie d ou t when the

is turned on.



Note: Turning the

from charging or discharging the battery pack.

Access the Main Menu screen by pressing the

PRESS key

“DISCHARGING” will appear and flash. Once the internal charger has discharged the battery pack it automatically switches to charging.

PRESS

Note: All functions of the

[ENTER] [MENU]

charged or reconditioned.

20

[8]

to access the Battery Management screen.

[1]

to access the Charger Control screen.

[2]

to begin reconditioning the battery pack. The word

to return to the Battery Management screen.

to return to the Main Menu screen.

for the first time;

key.

; and

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battery

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battery pack the power transformer must be plugged in

off, or removing the power transformer w ill stop the uni t

[MENU]

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are usable while the battery pack is being

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Note: Battery capacity and life degrade with increased ambient temperature.

10. Measurement Setup

The

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is capable of simultaneous measurements of up to six channels of

temperature data.

WARNING

Never allow voltages of more than 10VDC between any two RTD senso r inputs. This may damage the See Application Note 1 in Appendix 3.

Plug the RTD sensor connectors into the RTD sensor sockets on the

noting carefully the polarity of the pins (see the connector diagram in Appendix 2).

Access the Main Menu screen by pressing the

PRESS key

PRESS keys

Select the RTD sensor type by pressing the arrow keys to cycle the selection

through the two supported RTD sensor types: 385 (α = 0.00385) and 392 (α =

0.00392). It is not possible to simultaneously use different RTD sensor types.

PRESS

60 Hertz as needed. This selects the appropriate filter to reject mains power interference as defined by your local power authority.

20

[1]

[SHIFT]

. It is recommended that isolated RTD sensors be used.

[MENU]

to access the Measurement Setup screen.

through

then

[6]

to toggle the selection of channels 1 to 6.

[+]

to toggle the mains frequency setting between 50 and

key.

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PRESS

This screen, hereafter referred to as the Measure Without Recording screen, allows the verification of proper setup.

[ENTER]

to begin measuring.

11. Measure Without Recording

Measure Without Recording - Screen Options

Pressing key

measuring and displaying the channels selected.

[2]

at the Main Menu screen will cause the

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to begin

To modify the parameters or display options, PRESS

access the Help screen that allows modification of parameters and options as detailed below.

Measure Without Recording

1 - Measurement Units

PRESS key

Fahrenheit. Changing the unit does not affect the data recorded. User settings are saved even when the

2 3 - Measurement Setup

4 - Display Options

[2]

- Key

PRESS key

channel selection to be changed (see Section 10).

PRESS key

the way data is displayed. Display changes do not affect the data recorded.

PRESS key

Digital

When digital is chosen each cha nnel selec ted in the M ea surem ent Setup

screen will be displayed in an alphanumeric format in the Measure Without Recording screen. Ei ther temp erature o r resistance value s can

be displayed. PRESS key between displaying (1) the present, minimum, and maximum temperature readings, and (2) the resistance between the positive and ground RTD terminals , betw een the negativ e an d gro und RTD terminals, and of the RTD element alone.

All keys displayed in the

screen.

[1]

to toggle the temperature unit between Celsius and

- No function assigned.

[3]

and the Measurement Setup screen reappears a llowing the

[4]

and the Display Options screen appears allowing changes to

[1]

to toggle the display between digital and graphic

Help

20

[5]

in the Display Options screen to toggle

[SHIFT]

screen also operate from the

is turned off.

then

[HELP]

If temperature is displayed, you can press

Measure Without Recording screen to reset the minimum and maximum values.

Graphic

When graphic is chosen, PRESS key

and a bar graph display.

Note: The X-Y option displays only a single channel of data at any given

time even when multiple channels are being recorded. Changing display options does not affect the data being recorded.

[SHIFT]

[2]

to toggle between an X-Y plot

then

[RESET]

in the

X-Y Plot

PRESS key [3] and the display option toggles between a single line

of data and a s ol id shaded ar ea in d icating sample magnitud es of th e channel being displayed.

PRESS key [4] to cycle through all selected recording channels.

Key [5] - No function assigned.

PRESS key [6] to toggle the “auto scale” function on or off. This

function causes the scale of the Y-axis on the X-Y plot to be automatically set according to the present data values.

Bar Graph

If the bar graph option is selected, each channel selected at the

Measurement Setup screen will be displayed simultaneously with constantly updated horizontal bars for each channel.

PRESS key [6] to toggle the “auto scale” function on or off.

PRESS [ENTER] to return to the Measure Without Recording

screen.

5 - New

PRESS key [5] and the New Recording screen will appear allowing the

6 - Key [6] - No function assigned. 7 - Key [7] - No function assigned. 8 - Key [8] - No function assigned. 9 - Key [9] - No function assigned. 0 - Zero Position

PRESS key [0] to cycle the placement of the zero point of the bar graph.

Adjust Scale (bar graph and X-Y plot

While holdi n g d o w n [SHIFT], PRESS either [

Scroll Y-Axis (X-Y plot display ONLY)

PRESS and HOLD either of the [

Recording

initiating of a new recording session without returning to the Main Menu screen (see Section 12 for instructions).

Choices are “left”, “right”, and “center”.

displays)

] to adjust the scale on

] or [

the bar graph, or the Y-axis scale on the X-Y plot.

] and [

Without Recording screen, to scroll the Y-Axis without affecting the scale.

] keys, while in the Measure

12. New Recording

Definitions:

Note: The standard system memory of 128 kilobytes will allow for a total of

Note: Specifying the number of samples to be recorded before beginning to record

Recording

measurement session regardless of the number of channels selected during that session. The maximum number of samples that can be collected in any recording is 9999 per channel (up to a maximum of 6 channels).

Data set

sessions). The unit will store up to 50 data sets in memory allowing for a total of 2500 recordings to be stored.

approximately 100,000 measurement data points to be stored. This number reflects the total nu mber of i ndiv i dual data points w hich can be measured an d recorded by each channel. Memory can quickly be used up if recordings of long duration and multiple channels are taken (i.e. one recording of 6 channels at 9999 sample s equal s 59 ,994 data points and approx imately 6 0% usage of memory).

will optimize memory usage.

New Recording

PRESS key

This screen allows for the measurement and recording of data w ith user -def inab le parameters entered, such as data set ID, size of recording, sampling interval, “auto size”, a n d b ee p alert settings. The following o pt ions are listed accor di n g to menu choice.

[3]

represents the data collected during a single

is a collection of up to 50 recordings (or data collection

Screen

at the Main Me n u screen to access the New Recording screen.

1 - Measurement Setup

PRESS key

the channel selection.

2 -

Data Set

Note: By default, when a new recording is initiated, the data set in whic h th e

unit selects to store the new recording is the first “empty” data set. However, any data s et can be chos en for a new recor d ing (even one th at already contains recordings) by performing the steps outlined below.

PRESS key

numbers and user-entered ID’s.

PRESS the

for the new recording. Data sets w ith n o re cording s asso cia t ed w ith th em are tagged “available”. Any of the 50 data sets can be selected.

Once the desired data set is highlighted, PRESS

[1]

to access the M easurement Setup screen to verify or chang e

Number

(assign data set number for storing the new recording)

[2]

and a complete list of data sets are displayed with their

]

[

keys to highlight the specific data set you wish to use

[ENTER]

to select it.

3 -

Data Set

Note: Different

this is best avoided to prevent confusion.

PRESS key [3] to access the Edit Name screen.

To Enter a New ID

PRESS [SHIFT] then [RE SET] to clear the ID field of all characters to the

right of the underlined character, if necessary.

PRESS [

characters. Numeric characters can be entered using the digit keys. Repeated presses of the digit keys enter the alphabetic characters shown on top of the digit keys. Pressing [0] or [1] twice enters a space character. To toggle a character from upper case to lower case, press

], and to toggle it otherwise, press [

[

[SHIFT] then [-], and to insert a character before it, pr ess [SHIFT] then [+]. Up to 16 characters can be entered for each ID.

PRESS [ENTER] to move forward or [SHIFT] then [BACK] to move

backward through the other ID characters and edit them.

PRESS [MENU] to save the new ID and return to the New Recordi ng

screen or press [START/STOP] to qu it t he edit process and return t o the New Recording screen with the ID remaining unchanged.

To Enter a Previously Used ID

PRESS [SHIFT] then [NEXT] for a list of the 10 most recently used ID s.

PRESS [

[ENTER] to confirm the selection. The ID may now be edited.

data sets

] or [

can share the same user-entered ID, however

] to cycle the under lin ed character through all alp hab eti c

]. To delete the character, press

] to highlight the ID you wish to use and then PRESS

PRESS [MENU] to save the new ID and return to the New Recordi ng

screen or press [START/STOP] to q uit t he e dit process and return to the New Recording screen with the ID remaining unchanged.

4 - Size (number of samples)

PRESS key [4] to enter the number of samples to record. The number of

samples previously stored for that data set will be displayed. If the number of samples has not been previously set, a “? samples” message is displayed.

Type in the number of samples (up to 9999). If an entry error is made, press

the [0] key repeatedly until the “?” appears again.

PRESS [ENTER] when finished to return to the New Recording screen.

Note: If the number of samples is set, the recording will automatically be

terminated when that number of samples is collected. If the number of samples is not set (i.e. left as “? samples”) then the recording must be terminated manually, otherwise 9999 samples will be recorded.

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