User Manual
Contents
1. Ce Hold down and press 3 images appear in the display e The first display image shows the software version e After approx 1 second the serial number of the pcb is shown e After another approx 1 second the text O g E is shown code must be keyed in E Press to exit service mode This option can be selected at any time Key in the following code E Press 3 times LS Press 5 times LS Press Twice LS Press Once The following display image appears mn SOURCE INT Press Jor until the display shows the same value 4 j as that measured with the external precision instrument Press to approve the value 12 103887 01 following display image appears annnmn SOURCE INT Press lo until the display shows the same value i as is measured with the external precision instrument Press to approve the value The mAcal now carries out a self calibration and adapts its circuits to that measured Switch on the mAcal It is now adjusted and ready for use 103887 01 6 TECHNICAL SPECIFICATIONS 23 3 Current generation Range Resolution Accuracy k 2 Max load Current measurement Range Resolution Accuracy k 2 Input impedance Voltage measurement Range Resolution Accuracy Operation temperature Storage temperature Battery life Battery types Mains a2. now measures the voltage shown in the display 3 6 HOW NEW PARAMETERS ARE SELECTED SETUP e Press for 2 seconds present selection of MODE is now shown in the display e g 4 20 ma L Dress to cancel a selection SETUP is exited it is necessary to start all over again This option be selected at any time 3 6 1 Selection of MODE It is possible to choose between 5 different MODES e 4 20mA LIN e 0 20mA LIN e 4 20mA FLOW e 0 20mA FLOW e 4 20mA VALVE LIN calculated linearly FLOW calculated logarithmically VALVE not calculated AUTO STEP function 3 8 4 4 2 4 or 19 20 21 20 mA E Press or for selection of new MODE Press s LAA to save the present selection 3 6 2 Selection of SLOPE TIME After MODE has been selected SLOP TIME ramp time in the case of AUTO can be changed The text SLOPEs is shown on the display for approx 1 second Press or for setting of SLOPE TIME The time be adjusted between 30 999 S 8 103887 01 Press to save the present selection 3 6 3 Selection of STEP SIZE After SLOPE TIME has been selected STEP SIZE step size in of range can be selected for the transmitter types LIN and FLOW If MODE 4 20mA VALVE is selected a fixed STEP SIZE is applied The text SE EP is shown in the display for approx 1 second Press or 1 for setting of STEP SIZE A choice b
3. LVE change over takes place between 3 8 4 4 2 4 and 19 20 21 20 mA the range is selected using the up arrow or down arrow keys The mAcal now generates the current shown in the display 3 4 HOW THE CURRENT IS MEASURED Connect the mAcal to the transmitter to be tested as shown in Fig 5 or Fig 6 on the cover of the user s guide and switch the unit on L Press until the display shows MEASURE mA or MEASURE L Press for selection of INT or EXT the present selection is shown in the display If INT is selected the 24VDC of the current loop is generated by the mAcal itself If EXT is selected the 24VDC of the current loop is generated by an external power supply Press MAA for selection of readout in mA The display thus has the following appearance in the measurement of 20mA in the current loop The current is printed out with a resolution of 0 001mA 4 20 LULU INT MEASURE The mAcal now measures the current shown in the display 3 5 HOW THE VOLTAGE IS MEASURED Connect the mAcal to the instrument to be tested as shown in Fig 7 on the cover of the user s guide and switch on the unit LS Press until the display shows MEASURE V Readout in 4 cannot be selected The display thus has the following appearance in the measurement in V The voltage is printed out with a resolution of 0 1Volt 103887 01 7 mAcal
4. User Manual mAcal mA loop Calibrator Copyright 2005 AMETEK Denmark A S pp Pt SF INDUSTRY Ameiek Denmark 4 8 FIG 7 21 11 2006 LIST CONTENTS 1 INTRODUCTION 1 1 PACKING LIST 2 SAFETY 65 1 2 OPERATION 222 See 4 3 1 DISPLAY AND KEYBOARD 4 3 2 SWITCHING THE MACAL ON OFF 6 3 3 HOW THE CURRENT IS 6 3 4 HOW THE CURRENT IS 7 3 5 HOW THE VOLTAGE IS MEASURED 7 3 6 HOW NEW PARAMETERS ARE SELECTED SETUP 8 3 6 1 SELECTION OF 8 3 6 2 SELECTION SLOPE TIME 8 3 6 3 SELECTION OF STEP SIZE 9 3 6 4 SELECTION OF STEP TIME mere 9 3 6 5 SELECTION OR DE SELECTION OF AUTOMATIC OFF FUNCTION 9 4 ERROR 5 10 4 1 TEST FOR OPEN LOOP 10 4 2 TEST FOR INCORRECT POLARITY 10 4 3 TEST FOR OVERRANGE recenser 10 4 4 INDICATION OF BATTER
5. Y 5 5 11 5 HOW IS ADJUSTED service mode 12 6 TECHNICAL SPECIFICATIONS 23 C 3 C 14 103887 01 1 INTRODUCTION mAcal is loop calibrator for measuring and generating mA mAcal is specially designed for use in industrial plants with 4 20mA signals The mAcal can be operated with one hand and operation is simple and intuitive 1 1 PACKING LIST When the instrument is received the box should contain the following e mAcal e Bag 2 test leads with crocodile clip e 4 batteries type LR6 AA e This user s guide 2 SAFETY INSTRUCTIONS gt 154 Read this manual carefully before using instrument In order to avoid any personal injuries and or damage to the instrument all safety instructions and warnings must be observed Disposal WEEE Directive These calibrators contain Electrical and Electronic circuits and must be recycled or disposed of properly in accordance with the WEEE Directive 2002 96 EC WARNING The calibrator must not be used for any purposes other than those described in this manual Follow all equipment safety procedures The calibrator has been designed for interior use only and should not be used in hazardous areas where vapour or gas leaks etc may constitute a danger of explosion Do not apply more than the rated voltage See specifications for supported ra
6. ase do not use solvents or abrasive cleansers 103887 01 3 OPERATION 3 1 DISPLAY AND KEYBOARD The various keys on the keyboard have the following functions cf Fig 1 on the cover of the user s guide ITEM 0 OG KEYBOARD ON OFF mA SETUP AUTO DOWN ARROW UP ARROW STEP FUNC FUNCTION PWR POWER Description Switching instrument on off Alternating between readout in mA and If the key is held down for more than 2 sec a change to SETUP takes place Under SETUP this key is used to select next parameter AUTO ramp or AUTO STEP function is started or stopped Less key If the key is held down the key press is repeated More key If the key is held down the key press is repeated The STEP function is activated or de activated Change over takes place between SOURCE mA MEASURE mA and MEASURE Volt function Change over takes place between EXT the 24VDC of the current loop is generated by an external power supply and INT the 24VDC of the current loop is generated by the mAcal itself The various segments of the display indicate the following cf Fig 1 on the cover of the user s guide ITEM DISPLAY SEGMENT Description 49 88888 Shows numerical value in mA or sec for readout of error codes etc EXT EXTERNAL External loop supply is selected 43 INTERNAL Internal loop supply is selected the internal 24VDC of the
7. ay CAUSE The unit measures a negative current REMEDY The test leads and are probably to be changed over 4 3 TEST FOR OVERRANGE The text EEEEE flashes in the display CAUSE The unit measures a current which is greater than 24mA or a voltage which is greater than 45Volts or less than 45Volts REMEDY Measure only voltages in the range 45 to 45 Volts Measure only in current loops where the current is less than 24mA Check that the instrument is connected properly See Fig 3 to Fig 7 on the cover of the user s guide 10 103887 01 4 4 INDICATION OF BATTERY STATUS The text LOW BAT lights up in the display The text LOW BAT flashes in the display CAUSE LOW BAT lights up The batteries are about to be used up However the instrument can still be used LOW BAT flashes The batteries are used up The instrument cannot be used The display goes out However the keyed in values are retained REMEDY LOW BAT lights up Change the batteries See Fig 2 on the cover of the user s guide LOW BAT flashes The batteries must be changed See Fig 2 on the cover of the user s guide 4 used LR6 AA batteries are removed and new ones inserted 103887 01 11 5 HOW mAcal IS ADJUSTED service mode Connect the mAcal to an external precision instrument with an accuracy higher than 0 02 of F S as shown in Fig 3 on the cover of the user s guide
8. dapter Dimensions x w xh Weight inc batteries bag and test leads Standard complied with Warrenty 103887 01 0 24mA 0 01mA 0 05 F S 900 Ohm 0 24mA 0 001mA 0 05 F S 10 Ohm OV to 45V 0 1V 0 5V 10 C to 40 C 20 C to 50 C 200 hours with external loop pwr 20 hours with 12mA output internal loop pwr 4 types LR6 AA 1 5V Alkaline 103950 6V DC 230mA EURO with 1 3 mm DC female connector 103957 6V DC 230mA UK with 1 3mm DC female connector 103964 6V DC 240mA US JAPAN with 1 3 mm DC female connector 174 x 66 x 26mm 89 336 50081 1 50081 2 50082 1 50082 2 91 157 EEC According to current terms af sale Delivery The guarantee only applies to factory faults and ceases to apply if the instrument has been subjected to un authorised interference and or incorrect operation 14
9. e made between the step sizes 5 10 20 25 50 and 100 Press to save the present selection 3 6 4 Selection of STEP TIME After STEP SIZE has been selected STEP TIME the time between changes in the AUTO STEP function can be changed Either 305 or 10 s is shown in the display Press 1 or for setting of STEP TIME E Press to save the present selection 3 6 5 Selection or de selection of automatic OFF function After STEP TIME has been selected it is possible to select or de select the AUTOMATIC OFF function mAcal automatically switched off approx 30 minutes after a key has last been activated The text A OFF is shown in the display for approx 1 second Alongside the text 0 or OFF appears amp Press I and AUTOMATIC OFF is selected appears in the i gt display Press and AUTOMATIC OFF is deselected OFF appears in the display Press to save the present selection SETUP is exited and the mAcal is now ready for normal operation with new parameters 103887 01 9 4 ERROR SITUATIONS 4 1 TEST FOR OPEN LOOP The text LOOP flashes in the display CAUSE The unit is unable to generate the desired current The current loop is probably open or selection of PWR is incorrect REMEDY e Check whether instrument is connected correctly e Check that PWR selection is correct 4 2 TEST FOR INCORRECT POLARITY The text POL flashes in the displ
10. mAcal being used to supply the current loop with power 44 MEASURE Measurement of current or voltage is selected indicated by unit B SOURCE Generation of current is selected 48 STEP The STEP function is active When the segment flashes this indicates that the AUTO STEP function is activated D s V or mA Indication of unit for readout numerical values 4 103887 01 ITEM DISPLAY SEGMENT 8 LOW BAT LOW BATTERY 66 0 20 900 4 20 Si FLOW VALVE ITEM CONNECTIONS Description When this segment is lit the voltage in the batteries is less than 3 5 and they should be replaced When the segment flashes the voltage is less than 3 1 V and the instrument cannot be operated 0 20mA is selected as the range which affects the readout in as well as STEP values 4 20mA is selected as the range which affects the readout in as well as STEP values FLOW transmitters are selected which affects the readout in as well as STEP values Proportional transmitters are selected which affects STEP values and the AUTO STEP function Description Connection of black test lead Connection of red test lead Connectio230mA n to E mains adaptor 6V DC 230mA Note The mains adapter does not charge rechargeable batteries 103887 01 3 2 SWITCHING THE ON OFF Ce Press and the unit is switched on off When the unit is switched on the present battery voltage appears in the display fo
11. nges 103887 01 Do not use the calibrator if it is damaged Before you use the calibrator inspect the case Look for cracks or missing plastic Pay particular attention to the insulation surrounding the connectors Select the proper function and range for your measurement Make sure the battery cover is closed and latched before you operate the calibrator Remove test leads from the calibrator before you open the battery door Inspect the test leads for damaged insulation or exposed metal Check test leads continuity Replace damaged test leads before you use the calibrator When using the probes keep your fingers away from the probe contacts Keep your fingers behind the finger guards on the probes Do not use the calibrator if it operates abnormally Protection may be impaired When in doubt have the calibrator serviced Disconnect test leads before changing to another measure or source function To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears To avoid personal injury or damage to the calibrator use only the specified replacement parts and do not allow water into the case Caution e Disconnect the power and discharge all high voltage capacitors before testing resistance or continuity Use the proper jacks function and range for your measurement or sourcing application To avoid damaging the plastic lens and c
12. r approx 1 second Fit the red test lead into the connector marked Fit the black lead into the connector marked The mAcal is now ready for use The unit automatically starts up in the function SOURCE mA MEASURE mA or MEASURE Volt which was active when it was last switched off 3 3 HOW THE CURRENT IS GENERATED Connect the mAcal to the instrument to be tested as shown in Fig 3 or Fig 4 on the cover of the user s guide and switch the unit on L Press until the display shows SOURCE mA or SOURCE LS Press for selection of INT or EXT the present selection is shown in the display If INT is selected the 24VDC of the current loop is generated by the mAcal itself If EXT is selected the 24VDC of the current loop is generated by an external power supply Press E LAA for selection of readout in mA or The display has the following appearance when is generated with internal loop supply 4 20 AA LI SOURCE INT Press and the generated current is increased 8 Press ff and the generated current is decreased Sa E Press for activation of pre defined current values values depend on selection of MODE and STEP SIZE 6 103887 01 Press MEN for automatic changing of current value If STEP is selected the AUTO STEP function change over takes place automatically between the pre defined current values For proportional transmitters VA
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