BEAMEX MC3 Portable Calibrator

PORTABLE CALIBRATOR

User Guide

Applies for Main Firmware version 1.10

Dear user, We have made every effort to ensure the accuracy of the contents of this manual.

Should any errors be detected, we would greatly appreciate to receive suggestions to improve the quality of the contents of this manual.

The above not withstanding, we can assume no responsibility for any errors in this manual or their eventual consequences.

We reserve rights to make modifications to this manual without any further notice. For more detailed technical data about the MC3 Portable Calibrator, please con-

tact the manufacturer.

8821000 / UEMC3 / 002794

Trademarks

Contents

QCAL® is a registered trademark owned by Oy Beamex Ab. Other trademarks are property of their respective owners.

Contents

A General

Contents

Introduction 2

About This Manual ................................. 2

Typographical Conventions .............. 3

Unpacking and Inspection ..................... 3

MC3 Hardware 4

Operational Sections and Connections . 4

The Upper Panel .............................. 5

The Connector on

the Left Side of MC3 ......................... 5

The Front Panel ................................ 6

Memory .................................................. 9

Batteries ............................................... 10

About the Charger and

the Charging Procedure ................. 11

Removing/Replacing

the Battery Pack ............................. 12

Support for Table Top Use ................... 13

The Wrist Strap and

the Neck Support Strap........................ 13

The Optional Carrying Case ................ 13

MC3 Firmware 14

General Description ............................. 14

Startup Procedure .......................... 14

Basic Mode ..................................... 15

Maintenance ................................... 15

Calibration Mode ............................ 15

The User Interface ............................... 16

The Status Bar................................ 16

The Function Key Bar .................... 17

Menus ............................................. 17

The Display Area ............................ 18

MC3s Firmware Option ....................... 21

Safety 22

Certifications and Compliances

(EC Declaration of Conformity) ............ 22

Safety Precautions and Warnings ....... 23

General Warnings .......................... 23

Warnings Concerning the use

of E and ET Sections ...................... 24

General Warnings Concerning

Pressure Measurement .................. 24

Warnings Concerning

High Pressure ................................ 25

Service 26

Recalibrating MC3 ............................... 26

Cleaning the Contacts of

the Internal Reference Junction ........... 26

The Battery Charger ............................ 26

Contents

B Startup and Basic Operation

Starting MC3 28

Startup Procedure ................................ 28

Basic Mode, Defined ............................ 29

Measuring 31

Pressure Measurement ........................ 32

Zeroing the Gauge Pressure .......... 32

Current Measurement .......................... 33

External supply ............................... 33

Internal Supply ............................... 33

Voltage Measurement .......................... 34

Measuring Low Voltages ................ 34

Measuring Voltages up to ±50 V .... 35

Resistance Measurement .................... 36

Switch State Sensing ........................... 37

Limit Switch Test .................................. 38

Performing the Limit Switch Test .... 38

Frequency Measurement ..................... 40

Pulse Counting .................................... 41

RTD Measurement (Temperature) ....... 42

Thermocouple Measurement

(Temperature) ...................................... 43

Internal Reference Junction ........... 43

External Reference Junction .......... 43

Generating/Simulating 45

General ................................................ 45

Changing the Value of the

Generated/Simulated Signal .......... 46

Current Generation .............................. 47

Using the ET sections

output terminals .............................. 47

Using the E sections

output terminals .............................. 47

Voltage Generation .............................. 49

Generating Voltages up to ±12 V ... 49

Low Voltage Generation ................. 49

Frequency Generation ......................... 51

Pulse Generation ................................. 52

RTD and Resistance Simulation .......... 53

Thermocouple Simulation .................... 54

Internal Reference Junction ........... 54

External Reference Junction .......... 54

Special Generations 56

Stepping ............................................... 57

Ramping ............................................... 58

C Advanced Operation and Configurations

Configuring the Calibrator 62

Settings ................................................ 62

Setting Time and Date ......................... 64

Additional Information 65

Things to Consider when Measuring

Pressure ............................................... 66

General ........................................... 66

Pressure Type ................................ 66

Pressure Inputs and their

Naming Conventions ...................... 67

Square Rooting .............................. 67

Thermocouple Measurement/Simulation,

Connections and Troubleshooting ....... 68

Internal Reference Junction ........... 68

External Reference Junction .......... 69

Error situations ............................... 71

Resistance and RTD Measurement,

Connections ......................................... 72

4-wire System ................................. 72

3-wire System ................................. 72

Using a Compensation Loop .......... 73

2-wire System ................................. 73

Current Measurement Parallel to

a Test Diode, Connections ................... 73

Parallel Functions in MC3 .................... 74

Contents

D Calibration

Contents

General 76

Phases of Instrument Calibration ........ 77

As Found Calibration ...................... 78

Adjustment ..................................... 78

As Left Calibration .......................... 79

Required Sections for Different Input/

Output Signal Combinations ................ 80

Calibrating an Instrument 82

Selecting the Instrument to

Be Calibrated ....................................... 82

The Instrument Window ....................... 83

A Calibration Procedure Using MC3 .... 84

About Automatic Calibration ........... 86

About Manual Calibration ............... 86

Examples of Instrument Calibration ..... 87

Pressure Transmitters .................... 88

Temperature Sensors ..................... 90

Temperature Indicators and

Recorders ....................................... 92

Electrical Limit Switches ................. 94

MC3s Support for

Instrument Adjustment ......................... 96

Maintaining MC3s Instrument

Database 97

Adding New Instruments ...................... 97

Editing Instrument Data ....................... 98

General Data Page......................... 98

Instrument Input Page .................... 99

Instrument Output Page ................. 99

Calibration Settings Page ............. 100

Calibration Instructions Page ....... 101

Deleting Instruments .......................... 101

Viewing Calibration Results 102

Calibration Result Windows ............... 103

How to Choose Which

Calibration Run is Viewed ............ 103

Deleting Calibration Results .............. 103

Appendix 1, Technical Data 106

Appendix 2, Index 110

General

Things discussed in Part A:

· An introduction to what MC3 is

and what the parts of this User Guide concentrate on.

· A general description of MC3s

hardware.

· A general description of MC3s

firmware and the available option.

· Safety precautions and warn-

ings.

· Briefly about how to service

MC3.

General

Introduction

Thank you for choosing a Beamex calibrator. MC3 comes in three different models:

· MC3

· MC3TE is intended for calibrating temperature instruments.

· MC3MF is a fully equipped multifunction calibrator including the

This manual applies to MC3 able in all MC3 models is presented, the models the feature applies to are listed in the beginning of the presentation.

As a member of Beamexs QCAL Quality Calibration family MC3 is, if equipped with the optional feature, able to communicate with the available QCAL calibration software.

Thanks to the logical user interface MC3 is very easy to use. The large backlit graphical display guides the user in different languages and it displays results both numerically and graphically.

is meant for calibrating pressure instruments.

capabilities of both MC3PE and MC3TE.

. Every time a feature that is not avail-

About This Manual

This User Guide is divided in four parts: A, B, C and D.

· Part A discusses general matters. There is also a chapter about safety.

· Part B describes the basic use of MC3 such as measuring and generating signals.

· Part C handles configuration level usage and also offers some additional information concerning pressure measurement, RTD and T/C measurement/simulation.

· Part D concentrates on calibration and matters related to calibration like handling instrument data.

The even page header displays the title of the active part. The odd page header displays the main subject (Heading level 1).

The header of each odd page also indicates the active part as shown in the adjacent picture (with Part B active). Use the information provided in the headers as a quick guide when searching for a particular subject.

Typographical Conventions

All examples of user interface texts are printed using 8 pt Arial

Black, e.g.

Selected port: ET:TCi(mea)

All front panel texts (fixed texts on MC3s cover) are printed using

8pt Eurostile, e.g.

Connectors marked T/C,LowV

Function and Menu keys are often referred to using both the key name in 8 pt Eurostile and the corresponding text (function) displayed on the screen in 8 pt Arial Black, e.g.

Function key D/Menu

Unpacking and Inspection

At the factory each new MC3 passes a careful inspection. It should be free of scrapes and scratches and in proper operation order upon receipt. The receiver should, however, inspect the unit for any damage that may have occurred during transit. If there are signs of obvious mechanical damage, package contents are incomplete, or the instrument does not operate according to specifications, contact the purchasing sales office as soon as possible. The standard accessories are as follows:

· Calibration Certificate (without numerical data)

· This User Guide

· Warranty Card

· Battery Pack, NiMH

· Charger for the Battery Pack

· Two test leads and clips

· If MC3 is equipped with a pressure input (models MC3

MC3PE): A pressure hose set

· If the temperature section is present (models MC3MF and

MC3TE): Four additional test leads and two clips

Introduction

and

For a description of the available firmware option, see MC3s Firm- ware Option on page 21.

If you have to return the instrument to the factory for any reason, use the original packing whenever possible. Include a detailed description of the reason for the return.

Warning! The accessory polyurethane hose supplied with the calibrator (models MC3MF and MC3PE) is rated to the maximum pressure of 20 bar at 21°C (290 psi at 70°F). Applying higher pressure can be hazardous.

General

MC3 Hardware

General features:

· IP65 water/dust proof case (EN60529) Battery pack IP30.

· Integrated impact protectors

· Both a wrist strap and a neck support strap

· A support for using the calibrator on the table

· Operating temperature: -10  +50 °C (14122°F).

+10  +40 °C (50104°F) when charging the batteries.

· Storage temperature: -20  +60 °C (-4140°F). Note: The stickers and the batteries may be affected when storing longer periods in extreme conditions.

· Humidity: 0  80 %RH

More comprehensive specifications are available in Appendix 1.

Operational Sections and Connections

T h e

T h e L e f t

S i d e

P r e s s u r e

I n p u t

C o m p u t e r

I n t e r f a c e

U p p e r

P a n e l

E l e c t r i c a l S e c t i o n ( E S e c t i o n )

T e m p e r a t u r e S e c t i o n ( E T S e c t i o n )

R e f e r e n c e J u n c t i o n B l o c k

T h e F r o n t P a n e

All sections and connections are presented in detail on the next pages.

Note. Keep in mind that the previous picture (as well as all pictures of

MC3 in this manual) has an example configuration of sections. The configuration of your MC3 may vary from the one in the picture.

The Upper Panel

Pressure Section

MC3 Hardware

The pressure section is on models MC3MF and MC3PE. The recommended pressure medium for the Pressure Input is clean

air. Clean non-corrosive liquids may optionally be used in inputs with a measuring range of 20bar/300psi or more. Avoid spilling liquid on MC3 when connecting/disconnecting pressure hoses to/ from the pressure input.

To avoid damaging the calibrator, use hand tightening only when connecting the pressure measurement hoses (max. torque 5 Nm, approx. 3.6 lbfft). If the use of tools is required to secure the connection (typically pressure inputs with a pressure range higher than 20 bar), apply the counterforce with a spanner on the connector bodys hexagonal part.

In addition to the gauge Pressure Input MC3 may be equipped with a Barometric Option.

The possible Barometric Option is located as second from right and it measures the barometric pressure through a connection in the back panel of MC3. Normally nothing need to connected to the barometric pressure option.

Remember to be cautious when working with pressure. See also chapters Safety on page 22 and Safety Precautions and Warn- ings on page 23.

The Connector on the Left Side of MC3

Computer Interface

The Computer connector may be used when connecting to a serial port in a PC. The PC may have a calibration software capable of communicating with MC3 or, e.g. a software that can be used when updating MC3s firmware.

Warning! Use only cables provided by Beamex when connecting MC3 to

a PC.

General

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

m e a s / s in k

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 -w m e a s

V , 1 ,

+ 2 4 V

V , ,

T / C I N T . R J

T / C O R E X T W IR E S O N L Y

2 - w x m t r

E T E

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

m e a s / s in k

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 -w m e a s

V , 1 ,

+ 2 4 V

V , ,

T / C I N T . R J

T / C O R E X T W IR E S O N L Y

2 - w x m t r

E T E

The Front Panel

The front panel has several sections. Some of them are pointed out with a callout in the picture of Operational Sections and Connections, and some of them not (e.g. display and keyboard). The ones with a callout are discussed first in the following paragraphs.

Electrical Section (E Section)

The E section can measure the following quantities: voltage, current and frequency. It can also be used when counting pulses or detecting the state of a switch. Additionally there is a possibility to generate current and supply an instrument with a 24VDC power

supply. The E section is part of all MC3 models.

Electrical and Temperature Section (ET Section)

The ET section is specially designed for temperature instrument calibration needs. It is not however restricted to only temperature instrument use because it can also generate voltage, current, fre- quency and pulses. The ET section is on models MC3

Measuring capabilities:

· Low Voltage measurement and T/C measurement using either the internal reference junction or the Low Voltage connectors.

· Resistance and RTD measurement.

Generation/simulation capabilities:

· T/C simulation using either the internal reference junction or the Low Voltage connectors.

· Resistance and RTD simulation.

· Voltage, current, frequency and pulse generation

and MC3TE.

Reference Junction Block

The T/C measurement/simulation internal reference junction is specially designed for MC3 and therefore best suited for reference junction compensation when calibrating thermocouples or instruments connected to a thermocouple.

The Reference Junction Block is suited for all standard T/C plugs and stripped wires. Open the fixing screw on the left side of MC3 before connecting the wires/plug to the Reference Junction Block. Make sure to connect the wires/plug as the polarity is indicated on the Reference Junction Block. Remember to tighten the fastening screw when the wires/plug are connected. Hand tightening is adequate. Do not pull out the wires/plug without first opening the fixing screw. Otherwise you might damage the contact surface of the connectors.

T/C measurement and simulation may also be done without the internal reference junction by using the Low Voltage terminals in the ET section. Then the reference junction arrangements have to be done outside MC3 and the correct reference junction settings as well as the reference junction temperature have to be informed to MC3.

Part C of this manual describes in detail what kind of reference junction settings are available.

MC3 Hardware

T / C I N T . R J

T / C , L o w V

T / C O R E X T W IR E S O N L Y

2 - w x m t r

4 - w m e a s

R , R T D

3 & 4 -w m e a s

V , 1 ,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

+ 2 4 V

m e a s / s in k

Display

MC3 has a backlit transreflective display. The resolution of the display is 240 x 320 pixels.

To quickly tune the contrast/viewing angle of the display:

· Press and hold the light button

down.

· Use the up and down arrow keys to change the contrast/

viewing angle.

To quickly tune the backlight brightness:

· Press and hold the light button

down.

· Use the left and right arrow keys to change the backlight

brightness.

The changed settings are automatically saved as default settings.

Keyboard

General

The keys on the MC3s keyboard are grouped according to their function as follows:

The Cursor Keys and the Enter Key

The Cursor keys and the Enter key are located close to the upper left corner of the display. The Cursor keys are used when moving the cursor on the screen. They also have several special functions in certain situations, e.g. when tuning the contrast/viewing angle of the display. The Enter key finishes the entering of values.

The Keys Above the Display

The Light key toggles the back light of the display on and off. It is also used when setting the contrast/viewing angle and the brightness of the display (see chapter Display on page 7).

The Info key displays information on MC3 and its sections. The On/Off key switches MC3 on and off. Press the On/Off key for

about half-a-second to switch on/off. This delayed function prevents accidental on/off switching of MC3.

MC3 Hardware

Pressing the +/- key toggles the sign of the entered numeric value. Note. The +/- key is applicable only in numeric fields.

The Decimal key adds the decimal point to the numeric value that is currently edited.

The Function Keys

The Function Keys are located below the display. The meaning of each Function Key varies depending on the situation. The lower part of the display indicates what the Function Key stands for at the moment.

The Numeric Keys

The Numeric keys are not only used when entering numbers:

· Keys 1 to 7 are used as menu selector keys.

· Keys 0 and 8 may be used when browsing through options in

drop down lists and selection lists.

· Key 9 can be used when accepting a selection or when finish-

ing a data entry. The functionality of the 9 key is almost similar to the Enter key, except for one situation: When entering numbers, the 9 key produces the number 9. To finish entering a number, you will have to use the Enter key or use the Function Key when available.

D/OK

Memory

MC3 has a dynamic memory allocation system. This means that there is not a specific area of memory reserved for, e.g. instrument data. All free memory may be used for anything that requires more memory. Thus there is no exact limit for the number of instruments that MC3 can maintain in its memory. It all depends on how much memory is allocated by other data.

Batteries

Full batteries:

Empty batteries:

General

MC3 uses rechargeable batteries. The charger for rechargeable batteries operates in the following environments:

- Voltage: 100240 VAC,

- Frequency: 50/60 Hz

The charging electronics is in the Battery Pack. Therefore the batteries may be charged although the Battery Pack is disconnected from MC3s Base Unit. If you have two sets of rechargeable batteries you may charge the disconnected Battery Pack while at the same time use MC3 with the connected Battery Pack.

The maximum operating time without recharging varies depending on the usage and brightness setting of the display light. Also the generated output current and the usage of the 24V transmitter supply affect the maximum operating time. Even with constant maximum load, the standard rechargeable batteries should last for 6 hours. A good average operating time is 10 hours.

The upper left corner of MC3s display shows a picture of a battery. The whiter the picture is, the more acute is the need for recharging.

Notes. MC3s memory and the internal clock/calendar uses a small amount

of power although the calibrator is switched off. Remember to check the capacity of the batteries from time to time although MC3 is not in use.

Do not leave MC3 without a Battery Pack for a long time. MC3 may loose its settings if it is left without a support voltage for an extended period.

MC3 Hardware

About the Charger and the Charging Procedure

The charger is connected to the charger connector at the bottom of MC3. The charging electronics informs you of the phases of the charging procedure with the help of the charge status light.

C h a r g e r c o n n e c t o r

C h a r g e s t a t u s l i g h t

When connecting the charger, the charging electronics first checks the charge level of the batteries. At this stage, no light is visible in the charge status light.

When the charge status light is red, a recharging is either starting (blinking red light) or in progress (constant red light). MC3 may be used during the recharging phase. Empty batteries are fully charged in approx. 2½ hours.

When the charge status light is green, the batteries are charged. At this stage the charging electronics provide a support voltage that prevents the batteries from discharging

Warnings! USE ONLY THE CHARGER PROVIDED WITH THE CALIBRATOR. The charger accepts input voltages from 100 to 240VAC. The charger should only be used indoors and the temperature

should not exceed 40 °C (104 °F).

General

Removing/Replacing the Battery Pack

To remove or replace the Battery Pack, perform the following procedure:

1. 2.

1. Turn MC3 upside down (the display facing the table top) and lift the support.

2. Pull the lever that is hidden under the support. The Battery Pack pops out allowing you to pull it out.

To replace the Battery Pack, simply slide it on its place. When you hear a click, the Battery Pack is secured in its place.

Note. Although the Base Unit is IP65 protected, the Battery Pack is not.

The Battery Pack has holes in order to vent generated gas and heat. Avoid exposing the Battery Pack to liquids.

MC3 Hardware

Support for Table Top Use

The support gives you a good viewing angle when MC3 is placed on a table top. Lift the support at the back of MC3 and place MC3 on the table top as shown in the picture.

The Wrist Strap and the Neck Support Strap

MC3 has a wrist strap to enable ease of use when MC3 is held in one hand. The neck support strap helps you during field calibration: Position MC3 in an angle that allows reading the display when working. Alternatively: Hang MC3 from, e.g. a valve shaft so that the display is on the same level as your eyes. Then your hands are free for working with the connections etc.

The Optional Carrying Case

MC3s soft carrying case is practical when moving from a location to another. The carrying case can also be used for transporting utilities, like:

· Test hoses, test leads and clips

· A pressure pump

· Temperature sensors

· Charger and its cable

· User Guide (this book)

The carrying case is suited for use in normal industrial environment.

General

MC3 Firmware

General Description

The following picture shortly describes the functions of the firmware. All main functions are marked with a black border. Each main function has several tasks which are displayed as shaded boxes without a black border.

M E N U S T R U C T U R E

I n s t r u m e n t A d j u s t m e n t

I n s t r u m e n t C a l i b r a t i o n

V i e w i n g t h e R e s u l t s

I n s t r u m e n t D a t a b a s e M a i n t e n a n c e

P R O C E D U R E

C A L I B R A T I O N

M O D E

S T A R T U P

B A S I C

M O D E

S t e p p i n g a n d R a m p i n g

M e a s u r e m e n t / G e n e r a t i o n / S i m u l a t i o n

M A I N T E -

N A N C E

C o n f i g u r i n g t h e C a l i b r a t o r

S e t t i n g T i m e a n d D a t e

A d j u s t i n g t h e C a l i b r a t o r

Startup Procedure

The following chapters briefly describe each main function.

Every time MC3 is started the Startup Procedure checks the functionality of the device by performing a self test.

If the self-test is passed successfully, some basic calibrator data is displayed.

After that MC3 automatically proceeds to Basic Mode. A more comprehensive description of the Startup Procedure is in the beginning of Part B of this manual.

Basic Mode

Maintenance

Calibration Mode

MC3 Firmware

In Basic Mode you can measure and generate/simulate signals. There are two separately configurable windows available. Basic Mode is often used for testing connections before starting the actual calibration procedure of an instrument.

Stepping and Ramping tools enable generating/simulating signals that vary with time.

All main functions of Basic Mode are described in part B of this manual.

This main function handles calibrator configuration settings. Additionally there is the possibility to recalibrate MC3 (requires a

password). Maintenance level subjects are handled in Part C of this Manual.

MC3s main duty is calibrating instruments. Therefore very special attention was directed on this matter when creating the calibrator. MC3 may be used as a stand-alone calibrator i.e. all instrument data and calibration data is saved in MC3s own memory. Optionally MC3 also communicates with calibration software.

MC3 supports the use of instruction texts. They help the technician to perform the calibration as fluently as possible. You may enter three kinds of instruction texts: Starting Guide, Adjusting Guide and Finishing Guide. Additionally, calibration notes can be entered after the calibration procedure.

More calibration related information is available in Part D of this manual.

Calibration Results

The graphical representation as well as numeric data of the calibration results may be viewed in MC3. Transferring the results to QCAL calibration software makes it possible to view the results in PC environment.

More information concerning calibration results is presented in Part D of this manual.

The User Interface

The main elements of the User window can be seen in the following picture:

All possible elements are not included in the previous picture, but the important ones are discussed in the following chapters.

The Status Bar

The Status Bar at the top of the display is visible all the time. It is divided into three main sections.

The first (leftmost) section displays the charge level of the battery. The second section displays the time and date.

The third section (rightmost) section displays additional information in the form of symbols, like:

Note that the third section is empty for most of the time. The symbols are visible only when needed.

General

M e n u

A l a r m <

Q u a n t i t y [ P r e s s u r e ]

( g a u g e )

F u n c t / P o r t

m b a r

[ P 1 : P R 2 C ]

b a r

k P a

U n i t

P a

[ b a r ]

b a r p s i m m H

m m H g

P r e s s u r e T y p e [ g a u g e ] Z e r o P r e s s u r e M o d u l e

C l o s eW i n d o w 1 W i n d o w 2

O t h e r s

M E N UM o d e

S e c t i o n s :

1 2 3

T i m e & D a t e

A d d i t i o n a l i n f o r m a t i o n

P o p - u p l i s t

P r e s e n t s e l e c t i o n

B a t t e r y ' s c h a r g e l e v e l

M e a s u r e m e n t r e a d i n g

D i s p l a y a r e a d i v i d e d i n t o W i n d o w 1 a n d 2

S t a t u s B a r

2 5 . 0 4 . 2 0 0 1 1 1 : 5 9

P r e s s u r e

P 1 : P R 2 C / - 1 . 0 0 0 0 0 0 . . . 2 b a r

0 . 4 5 2 1

2 C u r r e n t

E : C u r r e n t M e a s u r e m e n t

0 . 1 1 2

S e t u p S e t u p

F u n c t i o n k e y b a r

E x a m p l e o f S t a t u s

B a r a p p e a r a n c e

· An hourglass when MC3 is working on something that takes time.

· A question mark when an error occurred.

The Function Key Bar

C l o s e M E N UM o d e

O t h e r s

0 . 7 0 8 3 4

m b a r

( g a u g e )

A l a r m <

P 1 : P R 2 C / - 1 . 0 0 0 0 0 0 . . . 2 b a r

0 . 5

0 . 4 3 7 4

2 C u r r e n t

b a r

P r e s s u r e

E : C u r r e n t M e a s u r e m e n t

Q u a n t i t y [ P r e s s u r e ]

[ P 1 : P R 2 C ]

U n i t [ b a r ]

F u n c t / P o r t

2 9 . 0 1 . 2 0 0 1 1 3 : 2 0

P r e s s u r e T y p e [ g a u g e ] Z e r o P r e s s u r e M o d u l e

W i n d o w 1 W i n d o w 2

S e t u p S e t u p

Menus

MC3 Firmware

The Function Key Bar at the bottom of the display is visible all the time. The meaning of the Function Keys varies depending on the situation. A grayed Function key text means that the function is disabled at the moment.

C l o s eW i n d o w 1 W i n d o w 2

S e t u p S e t u p

O t h e r s

M o d e

M E N U

The Function Key for opening the menu is always D/Menu. The same key is used when closing the menu. If a menu is not needed for the current subject, the fourth Function Key is used for other needs.

A menu option is selected with the numeric keys to . Selecting a menu option results in one of the following events:

1. An immediate action follows and

the menu closes automatically, e.g. when selecting the

Pressure Module option in the

Zero

picture above.

2. A pop-up list opens for selecting one of the available options.

The current selection is displayed inside brackets in the menu. Use the and keys or the and keys to scroll the popup list. To select an option in the pop-up list, use either the

key or the D/Select Function key. To close the pop-up menu without selecting anything, press the key or the A/Cancel Function Key.

3. A new window opens for, e.g. viewing additional information or

for configuring the selected task.

Sometimes a Function Key can open another menu. In the previous picture, the Window 1 setup menu is opened. In this case Function Key used for opening other menus.

B/Window2Setup and Function Key C/Others can be

The Display Area

General

The layout of the display area varies according to the needs of the active tasks/settings. The following pictures give an overview of typical elements seen in different display area layouts.

Basic Measurement/Generation:

2 9 . 0 1 . 2 0 0 1 1 3 : 2 3

F r e q u e n c y

E T : F r e q u e n c y G e n .

1 . 0 0 0 0 0

A m p l i t u d e [ V p p ]

p o s . s q u a r e k H z

5 . 0 0

The display area is divided into two windows with informative texts and numeric measurement/generation values.

C u r r e n t

E : C u r r e n t M e a s u r e m e n t

1 1 . 9 8 3 7

m A

A border surrounding a numeric value indicates that the field is editable. It is, e.g. a generation field for entering generation values.

If several editable fields are visible, choose the active field with the cursor keys or the

B/Field Function

Key.

Calibration:

The display area is divided into three windows during a calibration.

The first window displays data related to the instruments input signal. The second corresponding data related to the output signal.

The third window displays the error graph. The error graph is also seen among calibration result data.

Configuration Window:

There are plenty of configuration windows in MC3. The picture beside is the configuration window for Ramping settings.

The common thing for all configuration windows is that they reserve the whole display area for the con-

C a l i b r a t i o n

I n p u t

O u t p u t

E r r o r 0 . 4 0 +

Q u a n t i t y P o r t

W a i t i n 0 % R i s e T i m e W a i t i n 1 0 0 % F a l l T i m e

R e p e a t s 0 = c o n t i n u o u s

F i e l d

M o d e

2 9 . 0 1 . 2 0 0 1 1 2 : 1 4

R T D T e m p e r a t u r e [ E T : S i m u l . ]

5 0 . 0 0

C u r r e n t [ E : M e a s . ]

1 1 . 9 9 2 5

0 % 5 0 % 1 0 0 %

F o r c e

P a u s e

A c c e p t

2 9 . 0 1 . 2 0 0 1 1 3 : 2 6

R A M P I N G

C u r r e n t E : I ( g e n )

2 1 2 2

P t 1 0 0 =3 8 5 ° C ( I T S 9 0 )

m A

- 0 . 0 5 % o f s p a n

s s s s

M E N U

figuration fields. Use the cursor keys to move be-

tween fields.

R a n g e 0 %

C a n c e l S t a r t

1 0 0 %

8 . 0 0 0 0 1 6 . 0 0 0 0

m A

2 5 . 0 4 . 2 0 0 1 1 2 : 1 3

W a i t

S e r i a l n u m b e r

E m o d u l e v e r s i o n

C a l i b r a t i o n d u e d a t e

M a i n v e r s i o n

E T m o d u l e v e r s i o n

2 3 5 1 2 3 6 5

1 . 3 0

1 0 . 1 2 . 2 0 0 1

1 . 0 0

1 . 5 0

M C 3 S e r i a l N u m b e r : 3 0 3 2 8 2 5 2 M a i n V e r s i o n : 1 . 1 0 E m o d u l e v e r s i o n : 1 . 3 0 E T m o d u l e v e r s i o n : 1 . 5 0

M o d u l e N a m e

S e r i a l N u m b e r § D a t e

R J

7 3 3 4 4 § 1 5 . 1 2 . 2 0 0 0

E T

5 2 2 2 5 § 1 5 . 1 2 . 2 0 0 0

3 1 2 0 2 § 1 5 . 1 2 . 2 0 0 0

P R B

1 5 7 6 3 § 1 5 . 1 2 . 2 0 0 0

P R 2 0 C

1 5 4 4 2 § 1 5 . 1 2 . 2 0 0 0

C l o s e

M F

MC3 Firmware

Tables:

Tables are used, e.g. when viewing calibration results in numeric format. Tables reserve the whole display area.

The tables are often larger than the display. In that case there are small arrows added to the table borders. They indicate that more information may be seen by using the arrow keys.

and keys scroll the list one

The line at a time. The

and keys scroll the list one page at a time (if applicable).

Info window:

Pressing the Info key

opens up the info window. It can be called at any time. The info window displays information on the available sections and the firmware version numbers.

Display Area Elements that are Used for Editing Data

There are four different fields/elements that are used for editing data in the display area. Use the

Field Function Key to move between editable fields in Basic Mode.

In configuration windows, use the cursor keys.

2 9 . 0 1 . 2 0 0 1 1 3 : 2 7

1 2 . 0 2 . 2 0 0 0 1 0 : 2 9 - A s F o u n d - P a s s e d

I n p u t

- 0 . 0 0 0 0 2 0 . 9 9 9 9 6 1 . 9 9 9 9 8

3 . 0 0 0 0 4 . 0 0 0 0 5 . 0 0 0 0 6 . 0 0 0 0 7 . 0 0 0 0 8 . 0 0 0 0 9 . 0 0 0 0 9 . 9 9 9 9 9 . 0 0 0 0 8 . 0 0 0 0

B a c k

O u t p u t

N e x t P a g e

[ V ]

- 0 . 0 0 0 0 5 0 . 9 9 9 9 6

2 . 0 0 0 0 3 . 0 0 0 1 4 . 0 0 0 1 5 . 0 0 0 2 6 . 0 0 0 1 7 . 0 0 0 1 8 . 0 0 0 1 9 . 0 0 0 2

1 0 . 0 0 0 1

9 . 0 0 0 2 8 . 0 0 0 2

[ V ]

1 2

E r r o r

0 . 0 0 3 0 . 0 0 0 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2

[ % ]

M E N U

Numeric Fields

There are two ways to start editing a numeric field:

1. Press a numeric key,

key. Then the entered value re-

R a n g e 0 %

1 0 0 %

4 . 0 0 0 0 1 6 . 0 0 0 0

4 . 0 0 0 0 2 0 _

m A

places the old value.

2. Press the key or the C/Edit Function Key available in some configuration windows. Then you can edit the old value. New digits appear at the end of the old value.

Accept the new value by pressing the

key or the D/OK Function

Key. To discard the edited value, use the A/Cancel Function Key.

General

Notes. You cannot add more digits if the length of the number is at its

maximum limit. Use the C/çDelete Function Key to remove unwanted digits first and then enter the new digits.

The dual function of the keys: , and is not available in a numeric field. The keys only represent numbers.

Text fields

P o s i t i o n I D

P T 1 0 6 . 1

Press any of the numeric keys or

C/Edit Function Key available

the in some configuration windows to start editing a text field. Then the

2 9 . 0 1 . 2 0 0 1 1 3 : 1 2

P T 1 0 6 . 1

menu with the available characters opens for selecting. Use the numeric keys (1 to 7) to select the character. Use the cursor keys to move the cursor in the text field. Select the character with the key. Use the C/çDelete Function Key to remove unwanted characters. If the character you want to use is not seen in the list of available

characters, try the

or the key

D e v i c e I D

D e v i c e N a m e

E r r o r C a l c . M e t h o d R e j e c t i f A d j u s t i f D o n o t A d j u s t i f A d j u s t t o

C a n c e l D e l e t e A c c e p t

% o f s p a n 0 . 5 0

0 . 3 0

0 . 1 0

to see more alternatives.

Accept the new text with the

D/Accept Function Key. To discard

(cancel) the edited text, use the A/Cancel Function Key.

A B C

D E F

G H I J K L

M N O P Q R

S T U V W X

Y Z Å Ä Ö O

Æ Ë Ï Ü Â Ê

Î Ô Û Ç ß

MC3 Firmware

Drop Down Lists

I n p u t M e t h o d

M e a s u r e d

Drop Down Lists are used when there is a limited amount of preset values. You have to select one of the available options. The list of avail-

I n p u t M e t h o d

M e a s u r e d

K e y e d C o n t r o l l e d

able options is displayed either below or above the Drop Down List field.

A Drop Down List opens when you press the

key or any of the numeric keys or the C/Edit Function Key available in some configuration windows. Small arrows in the upper right and/or lower right corner indicates that the list is longer than the visible part.

Selection Lists

Selection lists are used when you have to choose one of several options. Selection lists are often large, thus almost reserving the whole window. Selection lists can be longer than the visible part. When the cursor (the row with the inverted text) is on the bottom and you press

key, the list scrolls and dis-

the plays more options. The and keys scroll the list one line at a time.

The and keys to scroll the list one page at a time (if applicable). Select one of the options with the

C/Select Function Key or either the

2 9 . 0 1 . 2 0 0 1 1 3 : 1 5

P O S I T I O N / D E V I C E I D 1 0 1 - X L - 0 0 1 . 1 1 1 2 - T T - 0 0 3 . 1

1 1 2 - T T - 0 0 7 . 1

E S w P T 1 0 6 . 1 P T 1 1 2 . 1 2 P T 1 1 2 . 1 5 - 1 P T 1 1 2 . 1 5 - 2 P T 1 1 2 . 1 6 T I V V

D e v i c e I D

T T 1 1 2 . 0 9

P o s i t i o n N a m e

P r o d u c t t e m p e r a t u r e

C a l i b r a t e d

2 2 . 0 2 . 2 0 0 1

B a s i c M o d e

S e l e c t

M E N U

key or the key.

MC3s Firmware Option

The standard firmware shipped with MC3 is capable of performing all normal measurement, generation/simulation and calibration tasks.

The following firmware option is available:

· Communication with QCAL® software. The option also includes a cable for communication between MC3 and the QCAL® software.

General

Safety

MC3s case is water/dust proof (IP65). The battery pack does however have holes to enable proper ventilation and heat transfer. So be careful when working in wet conditions.

The materials of MC3s case withstand normal industrial conditions. MC3 endures shocks with the help of the built in impact protectors

Certifications and Compliances (EC Declaration of Conformity)

MC3 conforms to the EMC directive 89/336/EEC as attested by conformity with the following harmonized standards:

EN 50081-1 Emission, EN 50081-1 Immunity, EN 61000-3-2 Harmonic currents, EN 61000-3-3 Voltage fluctuations,

and the low voltage directive 73/23/EEC as attested by conformity with the following harmonized standard:

EN 60950 Low Voltage.

Safety Precautions and Warnings

MC3 calibrator is a precision calibration tool that should be used by skilled people. Working with MC3 involves the usage of pressure, temperature and/or electrical instruments. Be sure to know how to work with these instruments and how to safely connect/disconnect pressure hoses as well as electrical test leads clips, etc.

Use MC3 only if you are certain of that it can be used safely. Safe use of MC3 is no longer possible if one or more of the following cases are true:

· When the case of MC3 is evidently damaged

· When MC3 is not functioning as expected

· After prolonged storage in unfavorable conditions

· After serious damage during transport

Sometimes it is necessary to use a portable radio transceiver while working with the calibrator. To prevent calibration errors caused by the radio frequency interference, keep the radio far (at least 1 meter) from the calibrator and the circuit under calibration while sending.

General Warnings

Use only cables provided by Beamex when connecting MC3 to a PC.

Use the MC3 battery charger in a non-hazardous indoor location only and only with Beamex calibrators.

MC3 uses rechargeable batteries. They are considered as hazardous waste. Dispose used batteries properly according to local regulations.

Avoid short circuiting the batteries. The short circuit current may cause burns to you, damage to the device or even fire. Notice, that also new replacement batteries are shipped in charged state.

Rechargeable batteries may vent small amounts of gas during recharge. The vented gas mixture may be highly explosive, but normally it diffuses rapidly into the atmosphere. To avoid danger, use only the original charger and never recharge in a gastight container.

The charger should only be used indoors and the temperature should not exceed 40 °C (104 °F).

Safety

General

Warnings Concerning the use of E and ET Sections

The measurement and generation terminals of MC3 are protected against over voltage and over current as far as it has been possible without affecting the accuracy. The circuits are designed so, that you can connect a voltage source 50VDC/2A between any terminals without damaging the device. However, long exposure to this kind of stress may affect the accuracy.

Although there is a galvanic isolation between MC3s ET and E sections, it is for functional purposes only. The max. 50 V restriction applies between these sections too.

Maximum output voltage from MC3s terminals is below 30V. If you, however, connect together voltages from the ET and E sections or if you connect external voltages to MC3, the resulting voltage may be high enough to be hazardous.

General Warnings Concerning Pressure Measurement

The accessory polyurethane hose supplied with an MC3 with a pressure input is rated to the maximum pressure of 20bar at 21°C (290psi at 70°F). Applying higher pressure can be hazardous.

To avoid damaging the calibrator, use hand tightening only when connecting the pressure measurement hoses (max. torque 5 Nm). If the use of tools is required to secure the connection (typically pressure inputs with a pressure range of 20 bar or more), apply the counterforce with a spanner on the connector bodys hexagonal part.

Always depressurize the system before opening or connecting any pressure fittings or connectors. Use proper valves for venting the system. Ensure that all connections are made correctly and that the hose and the connectors are intact.

Always use the pressure media stated in the inputs sticker. Using unsuitable pressure media may destroy the pressure sensor. The pressure inputs sticker is located at the rear of MC3.

Never exceed the maximum pressure of a pressure input. The pressure inputs maximum pressure is stated on the inputs sticker.

Never plug a hose with your hands or put the hands in front of a gas spray coming from a leakage. A gas bubble in the blood circulation can cause death.

Warnings Concerning High Pressure

High pressure is always dangerous. Only personnel with good experience and knowledge of high pressure liquid, air and nitrogen operations are allowed to work with the input. Read carefully all these instructions and local safety instructions for high pressure operations before starting the use.

When using gas, the system must not contain any liquid, especially if you do not know how they may react under pressure. Use of clean air or nitrogen is recommended as gaseous pressure media. Liquid pressure media should be preferred when using inputs with a pressure range of 60 bar (30000 psi) or more.

If you use nitrogen, minimize the leak to the atmosphere and take care of sufficient ventilation. Close the valve of the nitrogen cylinder, when the system is not in use. Increase in the percentage of nitrogen in the ambient air may cause unconsciousness and death without warning. Read carefully the safety instructions for nitrogen and make sure that the other people in the same space are aware of the danger.

Use of liquid pressure medium is recommended with pressure measurement inputs at higher pressure range. Use water or suitable hydraulic oil. Check that the used liquid is not aggressive against the materials used in the transducer or tubing. When using liquid, minimize the amount of air in the system. So you can minimize the amount of spilled liquid in case of leakage.

Do not use the same tubing with different liquids or gases. Check what the local regulations say about construction and

use of pressurized vessels. The regulations normally control construction and use of systems where the product of the pressure and volume exceeds a certain limit. The volume of this system depends on the instrument connected to it.

High pressure gas is dangerous because it can break the container and the flying splinters may cause injury. Also small leaks of gas may be dangerous because the high velocity of the leaking gas jet enables penetration through skin. If a gas bubble gets into the blood circulation, it can cause death. The leak jet is particularly penetrative, if some liquid is coming with the gas.

Safety

General

Service

Only qualified service personnel may perform higher level maintenance for MC3. Never open the case unless have explicit in- structions from Beamex or a local representative.

There are, however a few things that anyone using MC3 may do.

Recalibrating MC3

Only laboratories approved by Beamex may recalibrate MC3. Contact Beamex or your local representative for information concerning the recalibration of MC3. Contact information is on the first pages of this User Guide.

Cleaning the Contacts of the Internal Reference Junction

The contacts of the Internal Reference Junction may need cleaning from time to time. The time period varies depending on the environment MC3 is used in.

Carefully open the cover of the Internal Reference Junction by using a screwdriver as a wrench. Now you can see the contacts. Remove all impurities and press back the cover. The cover is secured when you hear a click.

The Battery Charger

The charger is not intended to be serviced. When unusable it can be thrown away according to local waste disposal regulations.

Startup and Basic Operation

Things discussed in Part B:

· What happens during the

· Measuring signals.

· Generating/simulating signals.

· Step and Ramp functions.

startup procedure.

Startup and Basic Operation

Starting MC3

Startup Procedure

When MC3 is started, a startup picture appears. After a self test, some basic information of the calibrator at hand appears in the lower part of the screen. The graphic in the upper part includes information on the model of the MC3 at hand (MC3MF, MC4PE or MC3TE). If you want to view the calibrator information for a longer period, press

1 8 . 0 6 . 2 0 0 1 1 2 : 2 9

M F

S e r i a l n u m b e r M a i n v e r s i o n

C a l i b r a t i o n d u e d a t e

3 0 3 2 8 2 5 2 1 . 1 0

1 0 . 1 2 . 2 0 0 1

W a i t

the D/Wait function key. Then the calibrator information is visible until you press the D/Continue function key.

The calibration due date that is listed in the startup window is the earliest calibration due date for all sections.

Basic Mode, Defined

Every time MC3 is switched on, the startup procedure ends in Basic Mode.

All non-calibration related measurements and generations are performed in the Basic Mode. Briefly: in Basic Mode MC3 works like a high quality multimeter. When returning from MC3s higher level operations (calibration, viewing of calibration results, calibrator and user configurations), you always return to the Basic Mode.

Starting MC3

B a s i c M o d e :

M e a s u r e m e n t G e n e r a t i o n . . .

W h e r e s h o u l d I g o t o d a y . . .

In Basic Mode, the two available measurement/generation/simulation windows have default settings based either on factory settings or settings defined when MC3 was previously used.

The first time the D/Menu key is pressed, the Window1Setup menu is available. Other possible menus can be selected from the function keys: B/Window2Setup and C/Others. The latter function key opens a menu with a possibility to change the general setiings of MC3.

Startup and Basic Operation

Example of a Basic Mode screen with pressure measurement configured in Window 1 and current measurement configured in Window 2:



What can be done in Basic Mode

· Measure signals (*

· Generate signals (*

· Simulate signals (**

· Perform a Limit Switch Test

· Use the ramping function

· Use the stepping function

*) Available options depend on the installed sections. **) Simulation only available in models MC3

2 9 . 0 1 . 2 0 0 1 1 3 : 2 5

P r e s s u r e

P 1 : P R 2 0 C / - 1 . 0 0 0 0 . . . 2 0 . 6 8 4 0 b a r g

2 . 6 4 7 5

C u r r e n t

E : C u r r e n t M e a s u r e m e n t

1 2 . 4 7 3 1

C a l i b r a t i o n

M o d e

and MC3TE.

g a u g e b a r

m A

M E N U

Next

Measuring on page 31 Generating/Simulating on page 45 Special Generations on page 56.

Measuring

All measurements in Basic Mode require that you first select the Window to be used (Commands: Start with D/Menu and continue either with A/Window1Setup or B/Window2Setup). Each measurement has its own unique 1/Quantity and 2/Function/Port set- tings in their windows menu. The other window menu settings, e.g. measuring unit, refine the measurement characteristics.

Because all measurements are not available in all MC3 models, the presentation of each measurement include a description of MC3 models supporting this measurement. The required section for the measurement is also mentioned. If the section is not included in your MC3, the

1/Quantity and 2/Function/Port settings needed

for the measurement are not available as choices in the pop-up lists.

Each measurement also has at least one picture with a circle around some of MC3s terminals, like the one below.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

1/Quantity and

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

The circle indicates active terminals for each

2/Function/Port setting in the window menu.

If the picture has more than two terminals circled, then the lighter part is somehow optional. In the following picture, the third and fourth RTD measurement terminals are optional.

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Warning! Do not apply voltage higher than 50V (max 2A) between any

terminals.

Startup and Basic Operation

Pressure Measurement

Pressure measurement is possible with models MC3MF and MC4PE. See chapter Things to Consider when Measuring Pressure on page 66 for more infor-

mation on pressure measurement and pressure inputs. Required settings Options/description

Quantity Pressure Port P1:PRxxxx (or P3:PRB, if applicable) Pressure Type g gauge pressure or

abs absolute pressure.

The available pressure types may be restricted because of the selected pressure port/pressure input. For more information concerning pressure types, see chapter Pressure Type on page 66 .

The following picture displays the active input, when P1:PRxxxx is selected. If the barometric option is available, it measures the barometric pressure through an opening at the back side of MC3.

T / C IN T . R J

T /C O R EX T W IR E S O NL Y

T / C , L o w V

4 -w m e as

R , R T D

3 & 4- w m e a s

V , 1,

V , ,

O U TP U TM E A SU R E & S IM U L AT E M E A S U RE

E T E

2 -w x m t r

+ 2 4 V

m e as / s in k

Zeroing the Gauge Pressure

If the pressure input does not display zero gauge pressure when the applied pressure is zero, it has to be zeroed.

Open the appropriate window setup menu (

Setup or B/Window2Setup) and select menu option 7/Zero Pres- sure Module.

NOTE! Zeroing a pressure input is especially important when the op-

erating position of MC3 is changed or the location of MC3 is changed in the vertical direction. Both of the above mentioned factors affect notably on the pressure measurement input. Measuring pressure below 100 mbar (approx. 40 iwc) should be done with a firmly mounted MC3 (e.g. placed on a table top).

Next

Calibration, see Part D.

D/Menu, A/Window1

Measuring

Current Measurement

Current measurement is possible with all MC3 models. The current measurement terminals are located in the E section.

Required settings Options/description

Quantity Current Funct/Port E:I(meas)

External supply

When the measuring circuit includes an external power supply, use the terminals shown in the picture below.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

Next

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Based on the terminals in use, MC3 automatically acts as either a pure current measuring unit or as a current measuring unit while at the same time supplying the measuring circuit.

Notes. Check the polarity of your connections. The arrows in the previous

pictures describe the correct flow of current. Information concerning current measurement parallel to a test di-

ode can be found in part C, chapter Current Measurement Paral-

lel to a Test Diode, Connections on page 73.

Current Generation on page 47 Calibration, see Part D.

Internal Supply

When you want to use MC3s 24 V terminal to supply the measuring circuit, use the terminals shown in the picture below.

V , 1,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

V , ,

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Startup and Basic Operation

Voltage Measurement

Voltage measurement is possible with all MC3 models. Low Voltage measurement is however only possible with MC3MF and MC3TE.

E section has terminals for voltage measurement within ±50V range. The ET section

The has low voltage measurement terminals with a range of ±500mV. The ET section terminals are also used when measuring/simulating thermocouples using an external Reference Junction.

Required settings Options/description

Quantity Voltage Funct/Port ET:LowV(mea), or E:V(meas)

Measuring Low Voltages

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s i n k

Select Function/port ET:LowV(mea) and choose a suitable unit. The following picture displays the active terminals.

MC3 displays the measured low voltage in the selected window.

T / C I N T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Hint! Low voltage measurement can be used for non-standard thermo-

couple measurement. You will see the measured temperature in millivolts and need a table to convert the measured millivolt value to corresponding temperature values. In this case, use copper extension cords to connect the non-standard thermocouple to MC3s terminals.

Measuring Voltages up to ±50 V

Select Function/port E:V(meas) and choose a suitable unit.

Measuring

Next

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

MC3 displays the measured voltage in the selected window.

Warning! Do not apply voltages higher than 50 V between any of MC3s

terminals.

Voltage Generation on page 49 Thermocouple Measurement (Temperature) on page 43 Calibration, see Part D.

Startup and Basic Operation

Resistance Measurement

Resistance measurement is possible with models MC3MF and MC3TE. Resistance measurement terminals are located in the ET section.

Required settings Options/description

Quantity Resistance Funct/Port ET:R(meas)

The following picture displays the active terminals:

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Note. If the measured resistance value is infinite or very high (>4000ohm),

the text +OVER is displayed in the measuring window. This means that the circuit is broken or the connection is wrong. Wrong connection may also cause erroneous reading, typically too low. If necessary, use the 2-wire ohm measurement to check the wiring before final connection.

Next

RTD and Resistance Simulation on page 53 RTD Measurement (Temperature) on page 42 Calibration, see Part D.

The two leftmost terminals are used in 2wire systems. MC3 automatically checks the connection and displays the found wiring system (2-wire, 3-wire or 4-wire) in the measuring window. For more information concerning wiring options, see Resistance and RTD Measurement, Connections on page 72.

Measuring

Switch State Sensing

Switch state sensing is possible with all MC3 models. The switch state detection terminals are located in the E section.

Required settings Options/description

Quantity Switch Funct/Port E: Switch (selected automatically when the

corresponding Quantity setting is activated )

Also check the

Sound setting. The option

Change means that MC3 beeps every time

the switch changes its state. When using options Open or Closed the sound is con- tinuously on when the switch is open respectively closed.

The contact should be free of external potential. If this is not possible, use DC voltage within the range -10V to +30V. MC3

Hint! Switch state detection may also be used for binary signal detection.

Next

Limit Switch Test on page 38 Calibration, see Part D.

shows voltages above approx. +1.5V as open contact and voltages below approx. +1.5V as closed contact.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Startup and Basic Operation

Limit Switch Test

A limit switch test displays the opening and closing point of a limit switch. MC3 supports limit switch testing of any type of limit switches as long as MC3 is able to either measure or generate/simulate the switchs input signal and is also capable of detecting the switch state.

Notes. This limit switch test is a restricted version compared to the limit

switch test available in Calibration Mode. This test gives you the approximates of the latest opening and closing points and also the current switch status. The limit switch test in Calibration Mode offers more accurate results and additionally, statistical data of repeated switch tests. More of the limit switch test in Calibration Mode in Part D of this manual.

MC3 does not support limit switch testing when simulating resistance or an RTD sensor.

Performing the Limit Switch Test

Configure, e.g. Window 1 to either measure or generate/simulate the switchs input signal (Function keys D/Menu and

A/Window1Setup in Basic Mode) and

Window 2 for switch state detection (Function keys D/Menu and B/Window2Setup in Basic Mode). It doesnt matter which window is assigned for which function as long as both the switchs input signal and the switch state are available for MC3.

Slowly change the switchs input signal and watch how the Opened@ and Closed@ data is updated as the switch changes its state.

3 0 . 0 1 . 2 0 0 0 1 3 : 3 5

V o l t a g e

E T : V o l t a g e G e n e r a t i o n

1 . 8 7 0 0 0

M e a s u r e m e n t V

S w i t c h

E : S w i t c h S e n s e

C l o s e d

O p e n e d @ V C l o s e d @ V

C a l i b r a t i o n

M o d e

F i e l d

S t o p

R a m p i n g

1 . 8 6 7 1 2

1 . 2 9 9 9 0 0 . 9 8 5 4 9

M E N U

Measuring

Note. The accuracy of the Opened @ and Closed @ values depend

greatly on the change rate of the switchs input signal.

Hint. If you use MC3 to generate/simulate the switchs input signal, you

can use ramping to create changing input signals for the switch under test.

Where to find more information when measuring a switchs input signal

Pressure Measurement on page 32 Voltage Measurement on page 34 Current Measurement on page 33 Thermocouple Measurement (Temperature) on page 43 RTD Measurement (Temperature) on page 42

Where to find more information when generating a switchs input signal

Voltage Generation on page 49 Current Generation on page 47 Thermocouple Simulation on page 54 Ramping on page 58

Startup and Basic Operation

Frequency Measurement

Frequency measurement is possible with all MC3 models. The frequency measurement terminals are located in the Required settings Options/description

Quantity Freq. Funct/Port E: f(meas)

Also check the Unit setting. MC3 compares the external potential

against an adjustable reference voltage

Trigger Level, range: -1+15V) when

( measuring the frequency.

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

E section.

T / C , L o w V

R , R T D

3 & 4 - w m e a s

4 - w m e a s

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

Next

Switch State Sensing on page 37 Pulse Counting on page 41 Frequency Generation on page 51 Calibration, see Part D.

Measuring

Pulse Counting

Pulse counting is possible with all MC3 models. The pulse counter terminals are located in the E section.

Required settings Options/description

Quantity Pulses Funct/Port E: Pls(count)

Also check the Trigg.Edge setting. MC3 compares the external potential

against an adjustable reference voltage

Trigger Level, range: -1  +15V) when

( counting pulses.

The counter may be cleared (zeroed) by selecting

D/Menu, 6/Clear counter.

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

Next

Frequency Measurement on page 40 Switch State Sensing on page 37 Pulse Generation on page 52 Calibration, see Part D.

Startup and Basic Operation

RTD Measurement (Temperature)

RTD measurement is possible with models MC3MF and MC3TE. RTD measurement terminals are located in the ET section.

Required settings Options/description

Quantity RTD-Temp. Funct/Port ET:RTD(mea) Sensor Type Available RTD sensors

The following picture displays the active terminals:

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s i n k

T / C I N T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Note. If the measured resistance value is infinite or very high (> 4000

ohm), the text +OVER is displayed in the measuring window. This means that the circuit is broken or the connection is wrong. Wrong connection may also cause erroneous reading, typically too low. If necessary, use the 2-wire ohm measurement to check the wiring before final connection.

Next

RTD and Resistance Simulation on page 53 Thermocouple Measurement (Temperature) on page 43 Resistance Measurement on page 36 Calibration, see Part D.

Measuring

Thermocouple Measurement (Temperature)

Thermocouple measurement is possible with models MC3MF and MC3TE. Thermocouple measurement terminals are located in the ET section.

Required settings Options/description

Quantity T/C-Temp Funct/Port ET:TCi(mea) (for the internal Reference Junction), or

ET:TCx(mea) (for other RJ compensation methods) Sensor Type Available thermocouples Reference Junction Depends on the Function/Port setting.

See subsequent chapters.

Internal Reference Junction

To use the Internal Reference Junction, select Function/Port ET:TCi(mea). The Reference Junction compensation method

Internal is automatically selected.

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

Additional information is found in chapter Internal Reference Junction on page 68.

External Reference Junction

To use an External Reference Junction, select Function/Port ET:TCx(mea) and choose one of the available Reference Junction compensation methods: Entered,

0°C or available RTD sensors.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

Additional information is found in chapter External Reference Junction on page 69.

Next

Startup and Basic Operation

Warning! If you connect an RTD sensor to the ET sections

R, RTD con-

nectors, there is no galvanic isolation between the thermocouple and the RTD sensor.

Thermocouple Simulation on page 54 RTD Measurement (Temperature) on page 42 Voltage Measurement on page 34 Calibration, see Part D.

Problems with thermovoltage measurement? See Error situations on page 71.

Generating/Simulating

General

MC3 is capable to perform the following generation/simulation functions:

· Voltage generation

· Current generation

· Frequency and pulse generation

· Thermocouple simulation

· RTD and resistance simulation

Generation/simulation in Basic Mode require that you first select the Window to be used (Commands: Start with tinue either with A/Window1Setup or B/Window2Setup). Each generation/simulation has its own unique 1/Quantity and 2/Func-

tion/Port settings in their windows menu. The other window menu

settings (generation/simulation unit etc.) refine the generation/simulation characteristics.

Because all generations/simulations are not available in all MC3 models, the presentation of each generation/simulation include a description of MC3 models supporting this generation/simulation. The required section for the generation/simulation is also mentioned. If the section is not included in your MC3, the

2/Function/Port settings needed for the generation/simulation are

not available as choices in the pop-up lists. Each generation/simulation also has at least one picture with a circle

around some of MC3s terminals, like the one below.

D/Menu and con-

1/Quantity and

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s i n k

T / C I N T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

The circle indicates active terminals for each

2/Function/Port setting in the window menu.

1/Quantity and

Startup and Basic Operation

Warnings! When selecting a generation/simulation function, MC3 always

starts with zero output (not when simulating a resistance). This is done to prevent damages in the connected instrument.

Be careful when increasing the generated/simulated signal. If an instrument that cannot withstand the generated signal is connected to MC3, the instrument may get seriously damaged.

Changing the Value of the Generated/Simulated Signal

Move the field indicator on the display until it surrounds the value of generated/simulated signal (use the B/Field Function Key or the cursor keys).

Enter the new value using the numeric keys. You may cancel the editing by pressing the A/Cancel Function Key. The C/çDelete Function Key removes the rightmost digit.

Accept the new value by pressing either the Function Key.

key or the D/OK

Note.

The dual function of the keys: generation field. The keys only represent numbers.

, and is not available in a

Generating/Simulating

Current Generation

Current generation is possible with all MC3 models. MC3 can generate current both with the E and the ET section. Additionally the E section can be used both in source and sink mode.

Required settings Options/description

Quantity Current Funct/Port ET:I(gen) or E:I(control)

Using the ET sections output terminals

When generating current from the ET sections output terminals, select Funct/

Port option ET:I(gen). The following pic-

ture displays the active terminals:

Notes. If you are simultaneously using the ET sections output terminals

and some of the ET sections measuring terminals, there is no galvanic isolation between the measuring circuit and the current generation.

The voltage between the output connectors of the ET section is limited to ±15 Volts. There is no sinking possibility in the ET section.

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

Using the E sections output terminals

When generating current from the E sections output terminals, you can either use MC3s internal 24V supply (source mode) or use an external supply and let MC3 control the current (sink mode).

Based on the terminals in use, MC3 automatically selects either source or sink mode.

Active terminals in source mode (below):

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Active terminals in sink mode (below):

V , 1,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

V , ,

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Startup and Basic Operation

Notes applying to both the ET:I(gen) and the E:I(control) ports: Check the polarity of your connections. The arrows in the previous

pictures describe the correct flow of current. If the loop resistance of the external circuit is too high or infinite, the

message O.LOAD is displayed until the load is reasonable.

Warnings! Make sure that you dont exceed the maximum current allowed

by the instrument under test. If you open the mA generation loop, MC3 tries to maintain the

current by increasing the output voltage. If you then close the loop again, the current is first too high, but returns quickly to the correct level. If this current peak could damage the components of the loop, make sure that the loop will not open or protect it against overcurrent. For the same reason, always enter 0mA output before connecting the loop.

Next

Current Measurement on page 33 Special Generations on page 56 Calibration, see Part D.

Generating/Simulating

Voltage Generation

Voltage generation is possible with models MC3MF and MC3TE. The ET section has terminals for voltage generation within ±12V range and terminals for low voltage sensor simulation with the range ±500mV. The low voltage terminals are also used when measuring/ simulating thermocouples using an external Reference Junction.

Required settings Options/description

Quantity Voltage Funct/Port ET: V(gen) or ET:LowV(sim)

Generating Voltages up to ±12 V

Select Function/port ET: V(gen) and choose a suitable unit.

MC3 displays both the set value and the

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

internally measured value for the generated voltage in the selected window. Max. output current depends on the voltage level as follows:

10 mA if the Voltage is within ±10V or

3 mA if the Voltage is outside of ±10V.

Low Voltage Generation

Select Function/port ET:LowV(sim) and choose a suitable unit. The max. output current is 5mA.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

MC3 displays both the set value and the internally measured value for the generated voltage in the selected window.

Startup and Basic Operation

Note. If the resistance of the external circuit in voltage generation is very

low (obvious short circuit), the message O.LOAD is displayed until the load is reasonable.

Hint! Low voltage generation can be used when calibrating instruments

with millivolt input. You can use it also to simulate special thermocouples not defined in MC3. If you simulate a thermocouple in millivolt mode, you must convert from temperature to millivolts manually.

Warning: If you short circuit the voltage output, MC3 tries to maintain the

voltage by increasing the output current. If you then remove the short circuit, the voltage is first too high, but returns quickly to the correct level. If this voltage peak could damage the components of the circuit, make sure that the circuit can not be shorted or protect the circuit against overvoltage. For the same reason, always enter 0V output before connecting the circuit.

Next

Voltage Measurement on page 34 Thermocouple Simulation on page 54 Special Generations on page 56 Calibration, see Part D.

Generating/Simulating

Frequency Generation

Frequency generation is possible with models MC3MF and MC3TE. The frequency generation terminals are located in the ET section.

Required settings Options/description

Quantity Freq. Funct/Port ET: f(gen)

Also check the Unit and Waveform settings.

MC3 generates sine or square wave with given amplitude and frequency. Sine can only be generated above 40 Hz. When generating a square wave, the output DClevel can be set to symmetric or all positive.

The amplitude (V to 12V.

) setting range is: 0.01V

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

Next

Pulse Generation on page 52 Frequency Measurement on page 40 Special Generations on page 56 Calibration, see Part D.

Startup and Basic Operation

Pulse Generation

Pulse generation is possible with models MC3MF and MC3TE. The pulse generation terminals are located in the ET section. Pulse generation is similar to square wave frequency output, but it generates a predefined count of all positive or symmetric pulses.

Required settings Options/description

Quantity Pulses Funct/Port ET: Pls(gen)

Also check the Polarity setting. Enter the amount of pulses MC3 should

generate in the pulse generation window. Also enter the amplitude and frequency to be used.

The pulse generation starts immediately after the amount of pulses value is entered.

Note. If you change the frequency after the pulse generation has started,

the frequency is adjusted during the current cycle, but the frequency is not correct until the next cycle.

Next

Frequency Generation on page 51 Pulse Counting on page 41 Special Generations on page 56.

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

2 - w x m t r

4 - w m e a s

R , R T D

3 & 4 - w m e a s

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

+ 2 4 V

m e a s / s in k

Generating/Simulating

RTD and Resistance Simulation

MC3 mimics the RTD or the resistor to be measured by the instrument under test. The instrument under test generates the current for the resistance measurement. MC3 controls the voltage across its terminals so that the resistance (voltage to current ratio) corresponds to the simulated temperature or resistance. MC3 can simulate resistance between 1 to 4000 ohm.

Voltage measurement is possible with models MC3 simulation terminals are located in the ET section.

Required settings Options/description

Quantity RTD-Temp. (for RTD simulation)

Resistance (for resistance simulation)

Funct/Port ET:RTD(sim) (for RTD simulation)

ET:R(sim) (for resistance simulation)

Sensor Type Available RTD sensors. Only needed

when doing RTD simulation.

The correct resistance value is between the resistance simulation terminals of the calibrator. Use of 2-, 3- or 4-wire connection is up to the receiver instrument. Use only the two leftmost

R,RTD terminals with every

wiring option. Connect the possible third and fourth wire according to the requirements of the connected instrument, but use only the two leftmost R,RTD terminals.

and MC3TE. RTD and resistance

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

T / C O R E X T W I R E S O N L Y

T / C , L o w V

4 - w m e a s

R , R T D

3 & 4 - w m e a s

Notes. In RTD and resistance simulation MC3

monitors the resistance measurement current. If the current is too high, it cannot simulate the right resistance value. In that case it shows the message H.CURR. Respectively, if the measurement current is so low that it may affect the accuracy, the message L.CURR is displayed.

Next

Thermocouple Measurement (Temperature) on page 43 RTD Measurement (Temperature) on page 42 Resistance Measurement on page 36 Special Generations on page 56 Calibration, see Part D.

Accurate operation of the simulation electronics requires that the current supplied by the instrument under test does not vary rapidly. The simulation result is not accurate if the instrument under test uses AC current. If the instrument under test uses pulsed measurement current it should wait a few milliseconds before starting the measurement after setting the current.

Startup and Basic Operation

Thermocouple Simulation

MC3 is able to mimic a thermocouple at given temperatures. This property is called thermocouple simulation. It enables checking and calibration of temperature indicators, recorders, transmitters and other equipment related to temperature measurement with a thermocouple probe.

In thermocouple simulation the original thermocouple is disconnected from the instrument under test and replaced with MC3. To the instrument under test MC3 appears as a thermocouple at the given temperature.

Voltage measurement is possible with models MC3 tion terminals are located in the ET section.

Required settings Options/description

Quantity T/C-Temp Funct/Port ET:TCi(sim) (for the internal Reference Junction), or

ET:TCx(sim) (for other RJ compensation methods) Sensor Type Available thermocouple types Reference Junction Depends on the Function/Port setting.

See subsequent chapters.

and MC3TE. Thermocouple simula-

Internal Reference Junction

The use of MC3s Internal Reference Junction is optional. To use the Internal Reference Junction, select Function/Port

ET:TCi(sim). The Reference Junction

compensation method Internal is automatically selected.

+ 2 4 V

V , 1,

V , ,

O U T P U TM E A S U R E & S IM U L A T E M E A S U R E

E T E

2 - w x m t r

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

Additional information is found in chapter Internal Reference Junction on page 68.

External Reference Junction

To use an External Reference Junction, select Function/Port ET:TCx(sim) and choose one of the available Reference Junction compensation methods: Entered,

0°C or available RTD sensors.

V , 1,

V , ,

O U T P U TM E A S U R E & S I M U L A T E M E A S U R E

E T E

2 - w x m t r

+ 2 4 V

m e a s / s in k

T / C IN T . R J

4 - w m e a s

R , R T D

3 & 4 - w m e a s

T / C O R E X T W I R E S O N L Y

T / C , L o w V

Additional information is found in chapter External Reference Junction on page 69.

Generating/Simulating

Notes. If the resistance of the external circuit in thermocouple simulation is

very low (obvious short circuit), the message O.LOAD is displayed until the load is reasonable.

Check that the instrument under test is set for the same thermocouple type as selected in MC3. If the type is not one of the available types, you should simulate in millivolt mode and convert from temperature to millivolts manually. More information concerning millivolt generation is in chapter Voltage Generation on page 49.

Wire-wound thermocouple temperature indicators and recorders are calibrated with known loop resistance, commonly ten or

twenty ohms. The required resistance of the conductors is usually marked on the device. When calibrating such a device, tune the loop resistance to the nominal value with an additional resistor.

Use MC3s 2-wire resistance measurement to tune the loop resistance of a wire wound device. Short circuit the measuring device for the time of resistance measurement. The resistance measurement may damage the device, if you do not install the short circuit. For more information on resistance measurement, see chapter

Resistance Measurement on page 36.

Warning! If you short circuit the thermocouple simulation output, MC3

tries to maintain the voltage by increasing the output current. If you then open the output again, the voltage is first too high, but returns quickly to the correct level. If this voltage peak could damage the components of the circuit, make sure that the circuit can not be shorted or protect the circuit against overvoltage. For the same reason, always enter 0°C output before connecting the circuit.

If you connect an RTD sensor to the ET sections R, RTD connectors, there is no galvanic isolation between the thermocouple and the RTD sensor.

Next

Thermocouple Measurement (Temperature) on page 43 RTD and Resistance Simulation on page 53 Special Generations on page 56 Calibration, see Part D.

Problems with thermovoltage simulation? See Error situations on page 71.

Startup and Basic Operation

Special Generations

Manual change of generated signals is sometimes a restriction. Therefore MC3 includes Stepping and Ramping as standard utilities for creating automatically alternating output signals (special generations).

To be able to start the definition of a special generation, a suitable generation/simulation field has to be active in the Basic Mode Window. If a generation/simulation is not started, select either A/Window1Setup or B/Window2Setup to configure a generation/simulation. For more information on how to configure a generation/simulation, see chapter Generating/Simulating on page 45 and its subchapters.

Notes. Only one of the special generations may be active at a given time. Special generations are available only in Basic Mode.

D/Menu and

Stepping

Special Generations

Open the window setup menu for the generation/simulation quantity that you want to configure a Stepping function for (D/Menu and either A/Window1Setup or B/Win-

dow 2Setup ). Choose 3/Step,Ramp and 1/Step in the next menu.

3 0 . 0 1 . 2 0 0 1 1 3 : 3 5

S T E P P I N G

Q u a n t i t y P o r t

S t e p p i n g M o d e

S t e p T i m e R e p e a t s 0 = c o n t i n u o u s S t a r t i n g P o i n t

S t e p S i z e N u m b e r o f S t e p s D i v i s i o n o f S t e p s

R a n g e

C u r r e n t , m A

1 2

1 1

1 0

10- 1 5 1 0 1 4

S t a r t

1 0 0 %

0 %

F i e l d

C u r r e n t E T : I ( g e n )

U p

1 . 0 0

3 F r o m p r e s e n t

1 . 0 0 4 L i n e a r

8 . 0 0 0 0 1 2 . 0 0 0 0

S t o p

E d i t

R a m p i n g

m A

S t a r tC a n c e l

T i m e , s

Configure the Stepping settings according to your needs. The following pictures are examples of stepping configurations. The graph below the configuration window displays the result of the settings.

3 0 . 0 1 . 2 0 0 1 1 3 : 3 6

S T E P P I N G

Q u a n t i t y P o r t

S t e p p i n g M o d e

S t e p T i m e R e p e a t s 0 = c o n t i n u o u s S t a r t i n g P o i n t

S t e p S i z e N u m b e r o f S t e p s D i v i s i o n o f S t e p s

R a n g e

C u r r e n t , m A

1 2

1 1

1 0

10- 1 5 1 0 1 4

S t a r t

1 0 0 %

0 %

F i e l d

C u r r e n t E T : I ( g e n )

U p / D o w n

0 . 5 0

0 F r o m 0 %

1 . 5 0

- - - - - - L i n e a r

8 . 0 0 0 0 1 2 . 0 0 0 0

S t o p

R a m p i n g

m A

S t a r tC a n c e l E d i t

T i m e , s

Note that because of the

Starting point

setting, the first repeat of the leftmost example is limited to a small starting step and only two full steps. Generally: if the stepping settings limit the first repeat to only a fraction of a full repeat it is still calculated as one repeat.

You may enter either the

Number of Steps. Because these values

Step Size or the

depend on each other, the value of the other field is calculated whenever you make any changes. Also, you can only enter an integer as the Number of Steps value. If you enter a step size that results in a non-inte-

ger value for the Number of Steps field, MC3 displays a dashed line instead of a value for the Number of Steps field. This indicates that the size of the step that reaches the 100 % range limit is smaller than the defined step size. See the rightmost example.

To stop stepping press the function key C/

StopStepping. This applies for both a

continuous stepping (Repeats field set to zero) and a stepping with a predetermined amount of repeats (max. value 65535).

Ramping

Startup and Basic Operation

Warning! Do not configure the range settings so that they exceed the

allowed input range of the connected instrument. MC3 determines the limits of the range settings based on the selected quantity and port, not the connected instrument.

Open the window setup menu for the generation/simulation quantity that you want to configure a Ramping function for (D/Menu and either A/Window1Setup or B/Win-

dow 2Setup ). Choose 3/Step,Ramp and 2/Ramp in the next menu.

3 0 . 0 1 . 2 0 0 1 1 3 : 3 8

R A M P I N G

Q u a n t i t y P o r t

W a i t i n 0 % R i s e T i m e W a i t i n 1 0 0 % F a l l T i m e

R e p e a t s 0 = c o n t i n u o u s

R a n g e

C u r r e n t , m A

1 6

1 4

1 2

1 0

S t a r t

C u r r e n t E T : I ( g e n )

2 1 1 2

0 %

8 . 0 0 0 0

1 0 0 %

1 6 . 0 0 0 0

S t o p

F i e l d

R a m p i n g

10- 1 5 1 0 1 4

s s s s

m A

S t a r tC a n c e l E d i t

T i m e ,

Configure the ramping settings according to your needs. The following pictures are examples of ramping configurations. The graphs presented after the configuration windows display the result of the settings.

3 0 . 0 1 . 2 0 0 1 1 3 : 3 9

R A M P I N G

Q u a n t i t y P o r t

W a i t i n 0 % R i s e T i m e W a i t i n 1 0 0 % F a l l T i m e

R e p e a t s 0 = c o n t i n u o u s

R a n g e

C u r r e n t , m A

1 6

1 4

1 2

1 0

10- 1 5 1 0 1 4

S t a r t

1 0 0 %

0 %

F i e l d

C u r r e n t E T : I ( g e n )

0 5 0 0

8 . 0 0 0 0 1 6 . 0 0 0 0

S t o p

R a m p i n g

s s s s

m A

S t a r tC a n c e l E d i t

T i m e ,

To stop ramping press the function key

C/Stop Ramping. This applies for both a

continuous ramping (Repeats field set to

zero) and a ramping with a predetermined amount of repeats (max. value 65535).

Special Generations

Note. MC3 actually makes the ramp in small steps. The steps are as small

as possible, slower ramps use smaller steps.

Warning! Do not configure the range settings so that they exceed the

allowed input range of the connected instrument. MC3 determines the limits of the range settings based on the selected quantity and port, not the connected instrument.

Startup and Basic Operation

(Empty)

Configurations and Additional Information

Things discussed in Part C:

· How to configure MC3 to suit

your requirements.

· Additional information: Useful

during pressure measurement, thermocouple measurement/ simulation and resistance/RTD measurement/simulation.

Advanced Operation and Configuration

2 9 . 0 1 . 2 0 0 1 1 0 : 3 0

N e t F r e q u e n c y B a c k l i g h t P o w e r

N o r m a l

5 0 H z

T e m p e r a t u r e U n i t T e m p e r a t u r e S c a l e

° C I T S 9 0

S E T T I N G S

C l o s e

P a g e

N e x t

E d i t

Configuring the Calibrator

A group of settings are available in MC3s Others menus Mainte-

nance option. The following chapters tell how you can change them

and what the default settings are.

Settings

The settings window has two pages. To open the settings window starting from Basic Mode, press D/Menu, C/Others and 1/Set-

tings. The leftmost picture is the settings page that opens first.

2 9 . 0 1 . 2 0 0 1 1 0 : 2 9

S E T T I N G S

D a t e F o r m a t T i m e F o r m a t

L a n g u a g e

A u t o - o f f D e l a y s ( 0 = n e v e r ) [ m i n ]

C a l i b r a t o r B a c k l i g h t

S o u n d V o l u m e s

K e y C l i c k

d d . m m . y y y y h : m m 2 4 h

E n g l i s h

0 5

L o w

N e x t

C l o s e

You can scroll between the pages using the

P a g e

E d i t

B/NextPage Function

Key.

Note. All changes in settings become valid immediately.

Configuring the Calibrator

Date Format

A drop down list of available date formats: dd.mm.yyyy, yyyy.mm.dd and mm.dd.yyyy.

The default format is dd.mm.yyyy.

Time Format

A drop down list of available time formats. 24 hour format: h:mm 12 hour format: h:mm am/pm.

The default setting is the 24 hour format.

Language

A drop down list of available User Interface languages. The default language is English.

Auto-Off Delay for the Calibrator

Wait time before auto power off is executed. The default setting is 0 (never).

Auto-Off Delay for the Display Backlight

Wait time before the display light is automatically switched off.

The default setting is 5 min. Setting the time to zero disables display

backlight auto-off.

Sound Volume Setting

The sound of the key click may be set to one of the following values: Off, Low, Medium or High.

Line Frequency

Select the setting that suits the local line frequency (50 or 60 Hz).

Note that wrong line frequency setting affects the accuracy of MC3.

The default setting is 50 Hz.

Display Backlight Power

Select the backlight power from the available options:

· Economy

· Normal

· Efficient

The default setting is Economy.

Temperature Unit

Select either °C (Centigrade) or °F (Fahrenheit) as the temperature unit.

The default setting is °C.

Temperature Scale

MC3 supports the use of both international temperature scales: ITS90 and the older IPTS68. Select which one of them is in use.

The default setting is ITS90.

Advanced Operation and Configuration

Setting Time and Date

To change the time and date (starting from Basic Mode), press

D/Menu, C/Others, 2/Maintenance and 2/Time/Date.

Notes. The date must always be given in dd.mm.yyyy format no matter

what the configured date format is. The time must always be given in the 24 hour format no matter

what the configured time format is. The date and time will be updated when you press the

Function Key.

2 9 . 0 1 . 2 0 0 1 1 0 : 3 2

T I M E / D A T E S E T T I N G S

D a t e ( d d . m m . y y y y )

T i m e ( h h : m m : s s )

C a n c e l A c c e p tE d i t

2 9

0 1

2 0 0 1

1 0

3 2

2 2

D/Accept

Additional Information

Most of the measurements, generations and simulations presented in this manual are straight forward: Just make the required window settings and connect the instrument under test in the active terminals and thats it!

Some cases require additional settings and things to check before you can be certain that the measurement, generation or simulation works as expected. A typical example of this is temperature measurement using a thermocouple. It is not enough to select the correct quantity and port in MC3. The Sensor type and the Reference Junction Mode have to be correct too. Wrong settings give erroneous results.

Whenever this additional information may be of use in a measurement, generation or simulation, text describing the function refers to one of the following chapters. An experienced user need not jump to read this supplemental text, but for a beginner we highly recommend it.

The main subjects described here are:

Things to Consider when Measuring Pressure on page 66, Thermocouple Measurement/Simulation, Connections and Troubleshooting on page 68, Resistance and RTD Measurement, Connections on page 72

and

Current Measurement Parallel to a Test Diode, Connections

on page 73. Parallel Functions in MC3 on page 74

Advanced Operation and Configuration

Things to Consider when Measuring Pressure

General

MC3 measures pressure with its internal gauge pressure input, if present. Additionally, if the barometric option is present, the measurement results of the gauge pressure input can also be shown as absolute pressure.

Pressure Type

Every pressure measurement is in fact a pressure difference measurement: a given pressure value is compared against a reference pressure. In certain cases the reference pressure has a special meaning (like the atmospheric pressure) and the pressure measurements compared against these points are given a special name:

· Absolute pressure measurement uses vacuum as the refer-

ence pressure.

· Barometric pressure (or atmospheric pressure) is the ab-

solute pressure of the surrounding atmosphere. It is specially titled because of its importance.

· Gauge pressure measurement uses the atmospheric pres-

sure as the reference. Gauge pressure may be zero, negative or positive. Most of MC3s pressure inputs actually measure gauge pressure although they may be used for measuring other pressure types too.

· Differential pressure measurement requires a special dif-

ferential pressure module that has an input available for both the reference pressure and the given pressure.

To be able to measure absolute pressure with MC3s gauge pressure input, you need the barometric pressure option. Certain high pressure inputs may approximate absolute pressure measurement by adding an entered barometric pressure to the measured gauge pressure.

Always ensure that the pressure type setting of your pressure measurement is what you intended it to be. The pressure type setting is crucial for getting meaningful pressure measurement results.

Additional Information

Pressure Inputs and their Naming Conventions

MC3s software refer to pressure inputs as follows:

Port: Input Name, e.g. P1: PR2C

which means that there is a pressure input in port P1 with a -1 to 2bar (-14.5 to 30psi) gauge pressure range.

The names of pressure inputs always start with the letters PR. The names also include numbers and possible additional letters as follows:

1. The number defines the max. nominal pressure in the SI pres-

sure unit bar.

2. If there is an additional letter C, the pressure input is a com-

pound input with an ability to also measure negative gauge pressures.

Examples: Name Max. nominal pressure in psi

PR2C -1  2 bar -14.5  30 PR160 0  160 bar 0  2400

Square Rooting

Pressure transmitters or converters used for flow measurement often have square rooting character. To enable correct percentage error calculation of square rooting transmitters, select square rooting as the Transfer Function.

Square rooting is required when entering instrument data for a pressure instrument (see Part D, Calibration). Standard pressure measurement in Basic Mode does not require any Transfer Function information.

Advanced Operation and Configuration

Thermocouple Measurement/Simulation, Connections and Troubleshooting

To accurately measure the thermovoltage caused by the temperature to be measured, the second thermovoltage caused by the Reference Junction needs to be compensated. This is done using one of the Reference Junction compensation methods described in the subsequent chapters.

The Reference Junction compensation method has to be chosen both when measuring and simulating thermocouples.

Internal Reference Junction

If the measuring/simulating port is set to the Internal Reference Junction (ET:TCi(mea) or ET:TCi(sim)), MC3 auto- matically selects the Internal Reference Junction compensation method. No other Reference Junction compensation methods are available unless the measuring/ simulating port is changed.

Connection when measuring/simulating thermovoltage using Internal Reference Junction Mode:

T / C m a t e r i a l s

( T / C , e x t e n s i o n o r

c o m p e n s a t i o n w i r e s )

T / C s e n s o r o r a

T / C IN T . R J

T / C O R E X T

T / C O R E X T W I R E S O N L Y

W I R E S O N L Y

T / C s i g n a l r e c e i v e r

T / C , L o w V

M E A S U R E & S I M U L A T E

4 - w m e a s

R , R T D

3 & 4 - w m e a s

BEAMEX MC3 Portable Calibrator

Specifications and Main Features

Frequently Asked Questions

User Manual