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IM CA71-E

5-3

Measurement

5.1 Connecting Cables to Terminals

CAUTION

• Before connecting the calibrator to the device under test, cut off the power

to the device.

• Do not apply any voltage or current exceeding the allowable voltage (300 V)

or current (120 mA). Otherwise, there will be a danger of not only damage to
the instrument but also personal injury due to electrical shock.

• Mistaking the H voltage input terminal for the mA current input terminal, and

vice versa, when wiring is extremely dangerous. NEVER make this mistake.

• The current input terminals are equipped with a built-in current input protec-

tion fuse. Overcurrent input to the terminals will cause the fuse to blow. If
the fuse is blown, replace it with one (P/N: A1501EF) with the specified rat-
ings. For details on fuse replacement, see subsection 5.2.3, "Measuring DC
Current."

Содержание HANDY CAL CA51

Страница 1: ...User s Manual Model CA51 71 HANDY CAL Calibrators IM CA71 E 1st Edition Feb 2002 IM CA71 E...

Страница 2: ...more multifunc tional than the CA51 The CA51 has no temperature measurement and communication functions The contents of this manual are subject to change without prior notice for reasons of improveme...

Страница 3: ...the product Main Unit Check the model specifications codes in the MODEL and SUFFIX fields of the nameplate at the back of the instrument to ensure that the instrument is exactly as specified in your...

Страница 4: ...oducts listed below are available as optional accessories If you purchased some of the optional accessories make sure the delivered package is complete with the ordered items and they are free from an...

Страница 5: ...arts Product Part Number Remarks Lead cable for source 98020 Lead cable for measurement RD031 Carrying case 93016 Terminal adapter 99021 Used for temperature measurement Fuse A1501EF 10 units as a kit...

Страница 6: ...s Manual in order to avoid the risk of injury or loss of life of personnel or damage to the instrument This symbol indicates DC voltage current This symbol indicates AC voltage current This symbol ind...

Страница 7: ...er test or an external con trol circuit or if you need to touch any external circuit cut off the power to the circuit and make sure no voltage is being supplied Fuses In order to prevent a possible fi...

Страница 8: ...nals 4 9 4 4 1 When RJ Sensor Is Used Making Use of Reference Junction Compensation 4 9 4 4 2 When No RJ Sensor Is Used 4 11 4 5 Sourcing Pulse Signals 4 12 4 5 1 Sourcing a Continuous Pulse Train 4 1...

Страница 9: ...lecting Desired Memory Number 6 6 6 3 2 Clearing All In Memory Data Globally 6 7 6 4 Sending Out Data from Memory CA71 only 6 7 7 Functions Provided by DIP Switch 7 1 7 1 Sweep Function 7 2 7 2 Auto S...

Страница 10: ...justing Source Functions 10 3 10 3 Adjusting Measurement Functions 10 6 10 3 1 Adjusting DC Voltage and DC Current Ranges 10 6 10 3 2 Adjusting AC Voltage and Resistance 400 Ranges 10 8 10 4 Notes on...

Страница 11: ......

Страница 12: ...onverter Measurement mode on off switch Power on off switch Output on off relay Batteries AC adapter MEASURE Mode Section SOURCE Mode Section MEASURE H L H L CPU Shunt resistor Multiplying D A convert...

Страница 13: ...rrent from an external power source in the 20 mA range Resistance Sources a resistance signal in the 400 range Thermocouple TC Sources a thermoelectromotive force corresponding to the temperature dete...

Страница 14: ...e 400 range Thermocouple TC Measures temperature according to the type of thermo couple K E J T R B S N L or U 1 CA71 only RTD Measures temperature according to the type of RTD Pt100 or JPt100 2 CA71...

Страница 15: ...rmocouples comply with the Japanese Industrial Standard JIS C1602 1995 ITS 90 except for the type L and U thermocouples that com ply with DIN 2 The RTD comply with the Japanese Industrial Standard JIS...

Страница 16: ...IM CA71 E 2 1 Names and Functions of Parts 2 2 Names and Functions of Parts 23 24 21 18 19 10 12 13 22 20 6 7 5 3 4 1 9 8 17 15 2 11 16 14...

Страница 17: ...options within the selected function If you have selected the 1 V 10 V or 100 V range use this key to toggle between the DC and AC options If you have selected the FREQ range use this key to select t...

Страница 18: ...n and its range 13 RANGE Key Used to further select from range options within the selected function If you have selected the 100 mV TC range use this key to select the voltage output or the type of th...

Страница 19: ...d m when you have selected the divided output func tion n m See Section 4 6 Divided Output Function n m for further details The and keys labeled MEM NO SAVE and READ serve as keys for working with the...

Страница 20: ...es the output is on OFF Indicates the output is off f SWEEP indicator for sweep function Comes on when the sweep function is selected using the DIP switch g MEM NO indicator Shows a memory number when...

Страница 21: ...rding to the level of remain ing electricity l RJON indicator Indicates reference junction compensation is active when thermoelectromotive force is being sourced The thermoelectromotive force output w...

Страница 22: ...input terminals Then contact the vendor from which you purchased the instrument AC adapter Use an AC adapter dedicated to the instrument Avoid placing any load on the AC adapter or prevent any heat em...

Страница 23: ...page 3 3 Never use the instrument with the cover of the battery holder opened Environmental Requirements Use the instrument in locations that meet the following environmental requirements Ambient temp...

Страница 24: ...re and humidity to places with high temperature and humidity or if the instrument experiences any sudden temperature change In that case leave the instrument under the given ambient temperature for at...

Страница 25: ...vel The battery replacement indicator shows the battery level in three steps according to the measured voltage of the batteries lit constantly The battery level is normal lit constantly The battery le...

Страница 26: ...dapter from Yokogawa M C Corporation Step 1 Make sure the calibrator is turned off Step 2 Insert the plug of the optional AC adapter into the AC adapter connection jack Turning On Off the Power Turnin...

Страница 27: ...s running on batteries and no key is operated for approximately nine minutes all elements on the LCD begin to blink The calibrator gives off a buzzer sound to alert you If you still do not operate any...

Страница 28: ...ff This feature makes it easier for you to view the LCD when operating the calibrator in dark places or when carrying out source or measurement Note that battery life shortens when the calibrator is o...

Страница 29: ......

Страница 30: ...voltage to ground below 30 V CAUTION Do not apply any voltage to the output terminals for ranges other than 20 mA SINK Otherwise the internal circuitry may be damaged The instrument has been calibrat...

Страница 31: ...ips of the cables to the input of equipment under test while making sure the polarities are correct For 3 wire connection resistance or RTD signal Step 1 Connect the red lead cable for source P N 9802...

Страница 32: ...ach digit of the LCD reading Each press of the and key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing you to se...

Страница 33: ...setting keys which corre spond to each digit of a value from 4 to 20 set the signal in a step by step manner You can set the signal in 4 mA incre ments or decrements in the order 4 8 12 16 18 20 mA Us...

Страница 34: ...or as indicated by the dashed lines in the following figure MEASURE CA71 SOURCE 24V DC AC or DC power supply 1 5 V output 4 20 mA Distributor H L mA H L Drawing SINK Current Step 1 Before connecting t...

Страница 35: ...ng the supplied terminal adapter P N 99021 makes it easy to wire the calibrator for this application NOTE Since the function discussed above requires a significant amount of DC cur rent 22 mA operatio...

Страница 36: ...resistance signal being sourced does not include the resistance component of the lead cables for source The calibrator is adjusted so that the signal has a resistance value as viewed from the output t...

Страница 37: ...ses the digit to overflow or underflow allowing you to set the output value without interruption Holding down the or key continuously changes the digit in question Pressing the key initializes the out...

Страница 38: ...ion selector switch select Step 3 Using the key select the type of thermocouple Select the type from K J E T R B S N L and U The selected type of thermocouple is shown on the LCD Step 4 When the RJ se...

Страница 39: ...ve attached the RJ sensor to the device being calibrated wait until the detected temperature stabilizes before you begin using the calibra tor If no reference junction compensation is required be sure...

Страница 40: ...eys corresponds to each digit of the LCD reading Each press of the or key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow...

Страница 41: ...f the key cycles through the 500 0 Hz 1000 Hz and 10 kHz options Step 3 Set the output value digit by digit using each pair of and output setting keys Each pair of and keys corresponds to each digit o...

Страница 42: ...initializes the output setpoint to the de fault value 0 1 V Step 6 Press the key once again to show on the LCD Then press the key one more time to revert to fre quency setting mode Step 7 Pressing th...

Страница 43: ...sing the key initializes the output setpoint to the de fault value differs depending on the frequency range Step 4 Pressing the key once switches to amplitude setting mode The LCD provides a reading o...

Страница 44: ...utput setpoint to the default thus reverting to the mode of sourcing continuous pulse trains Step 8 Pressing the key causes the indicator on the LCD to change from to The calibrator sources the preset...

Страница 45: ...ns Step 3 Set the output value digit by digit using each pair of and output setting keys Each pair of and keys corresponds to each digit of the LCD reading Each press of the or key increases or decrea...

Страница 46: ...turn off the output press the key once again The appears on the LCD and the output terminals are open cir cuited NOTE The contact has polarities Always connect the positive side to the H output termin...

Страница 47: ...w with the calibrator output turned off Step 1 When the setting of the sourced signal level of each range is complete follow step 2 and later steps Step 2 Using each pair of or keys set the main setpo...

Страница 48: ...7 To turn off the output press the key once again The appears on the LCD and the output terminals are open cir cuited Step 8 Pressing the key one more time cancels the divided out put n m mode TIP To...

Страница 49: ...reading of a sourced signal remains changed to the temperature detected by the built in temperature sensor of the calibrator as long as the key is kept held down Thus you can monitor the room s tem pe...

Страница 50: ...ernal temperature may become higher than the room s tempera ture because of a temperature rise within the calibrator With an external RJ sen sor it is possible to measure the room s temperature more p...

Страница 51: ......

Страница 52: ...t tached to the input terminals is 30 Vpeak maximum To avoid electrical shock do not use the terminal adapter for measuring any circuit voltage exceeding the maximum voltage to ground TIP With the key...

Страница 53: ...clips of the cables to the measuring termi nals of equipment under test while making sure the polarities are correct For thermocouple signal CA71 only Step 1 Connect the terminal adapter P N 99021 to...

Страница 54: ...instrument but also personal injury due to electrical shock Mistaking the H voltage input terminal for the mA current input terminal and vice versa when wiring is extremely dangerous NEVER make this m...

Страница 55: ...ing instrument under test Step 2 Using the function selector switch select Step 3 Connect the lead cables for measurement to the measuring terminals of the measuring instrument under test 5 2 2 Measur...

Страница 56: ...ce the fuse first remove the fuse holder labeled FUSE by turning the holder counterclockwise with a flatblade screwdriver Then replace the fuse and insert the fuse holder back in place Fasten the fuse...

Страница 57: ...100 and JPt100 options TIP If you select the 400 RTD range of the SOURCE mode at the same time the RTD selected on the SOURCE mode side precedes the one selected on the MEA SURE mode side Thus you can...

Страница 58: ...e 100 mV TC range of the SOURCE mode at the same time the thermocouple selected on the SOURCE mode side precedes the one selected on the MEASURE mode side Thus you cannot select any thermocouple for t...

Страница 59: ...Reading Range 100Hz 1000Hz 10kHz 5 5 2 Operating the Calibrator for Measuring Number of Pulses The CPM option in this measurement counts pulses per minute while the CPH option counts pulses per hour S...

Страница 60: ...ment The LCD shows the number of pulses counted up to the moment If the count exceeds the limit the calibrator shows the maximum number and stops counting When counting pulses the calibrator disables...

Страница 61: ......

Страница 62: ...mory MEM READ You can show data in memory on the LCD When data is being read from memory the source output remains turned off Thus you cannot do any source task using data stored in memory 3 Clearing...

Страница 63: ...address Executing the MEM SAVE function cancels the state of selecting memory reverting to normal setting mode Step 3 To save the next data item into the area with the next memory number press the ke...

Страница 64: ...ata is saved into the area with memory number 14 and the memory mode is cancelled Data is saved into the area with memory number 21 and the memory mode is cancelled All these are not yet used NOTE In...

Страница 65: ...area with the selected memory number address TIP To cancel the memory mode saving reading press the key one more time Executing the MEM SAVE function automatically cancels the memory mode 6 1 3 Overw...

Страница 66: ...used to save data Memory is ready for data saving Step 2 Pressing the key causes the on screen indication to blink indicating the calibrator is reading from memory Step 3 Using the pair of key select...

Страница 67: ...er whose data you want to clear Step 3 Pressing the key causes the LCD to show the alarm indi cation Step 4 Pressing the key once again clears the data with the se lected memory number TIP To cancel c...

Страница 68: ...econds The LCD shows the alarm indication Step 3 Pressing the key once again clears all of the data in memory ALL CLEAr alarm indication TIP To cancel clearing the data after the alarm indication is g...

Страница 69: ......

Страница 70: ...setpoint of the sweep or auto step function Selects the internal reference junction compensation for TC signal generation Selects the IPTS 68 temperature scale for temperature signal generation or mea...

Страница 71: ...ey is pressed at midpoints during a change in the output Sweep Mode Operation Step 1 Press the key to turn off the calibrator Step 2 Place switch 1 Sweep switch in the ON right side position Step 3 By...

Страница 72: ...begin decreasing The output value decreases down to the lower limit in the same amount of time it took to increase up to the upper limit When the output reaches the lower limit the calibrator retains...

Страница 73: ...to turn off the calibrator Step 2 Place switch 1 Sweep switch in the ON right side position Step 3 By setting the position of switch 2 Speed switch set the time of one step OFF left side 2 5 sec step...

Страница 74: ...ing value of the variable n is 1 the output cyclically changes with the variable n as n changes in the fol lowing manner n 1 2 3 m 1 m m 1 2 1 2 3 Step 10 To quit the auto step function turn off the c...

Страница 75: ...appropriate for the detected tem perature Step 3 To disable the INT RJ function turn off the calibrator by pressing the key Step 4 Place switch 3 back in the OFF left side position TIP Even when the I...

Страница 76: ...right side position you can measure transistor contact on off signals If you select the contact input function the contact symbol appears on the LCD By placing the switch in the OFF position you can...

Страница 77: ......

Страница 78: ...l communication cable P N 91017 you can use the RS232 serial port 9 pin D sub of a personal computer or any other equipment In talk only or printer mode you can output the source setpoint and mea sure...

Страница 79: ...to 3600 TIP To close the communication setting screen press the key once again while simultaneously holding down the key Even if you turn off the calibrator the communication mode and interval you ha...

Страница 80: ...ed if you select or 8 4 Data Format Data is output from the calibrator in the following format Source Function 1V Range DC V Data 1 0000 Measure Function 100 mV Range k Data 25 5C 8 5 Data Structure T...

Страница 81: ...urced setpoint queries the current setting SF Queries the source function SO On Off of source output queries the current setting SR Sets the sourcing range queries the current setting SY Switches betw...

Страница 82: ...t by one digit When normal condition Syntax for setting UPm delimiter Description of parameter m Specifies a digit 1 the lowest digit to 5 the highest digit H Enables Disables the output data header q...

Страница 83: ...Description of parameter m On Off condition m 0 Off m 1 On MR Sets the measuring range queries the current setting Syntax for setting MRm delimiter Syntax for query MR delimiter Response MRm delimite...

Страница 84: ...rror m 11 Received command not used in this instrument m 12 Specified parameter value is outside allowed range m 13 Attempt made to execute a command that is not permitted in a certain status of the i...

Страница 85: ...tput queries the current setting When normal condition adjustment Syntax for setting SOm delimiter Syntax for query SO delimiter Response SOm delimiter Description of parameter m Condition of generati...

Страница 86: ...digits ex 1 00003 CL Sets the adjustment item queries the current setting When adjustment Syntax for setting CLm delimiter Syntax for query CL delimiter Response CLm delimiter Description of paramete...

Страница 87: ...When normal condition Syntax for query OMm delimiter Response abcde fghij fghij delimiter Header section of measured value a V Voltage A Current O Resistance T Temperature F Frequency b DC Direct cur...

Страница 88: ...lue 2 digits among numbers from 01 to 19 where n m TE Sets the temperature monitor display for sourced TC RTD range queries the current setting TC RTD mode only When normal condition Syntax for settin...

Страница 89: ......

Страница 90: ...current signal source check if the load resistance is too large The built in fuse may blow off if any abnormal voltage level is applied to the output terminals If this is the case the calibrator needs...

Страница 91: ......

Страница 92: ...table and accuracy levels equal to or higher than those shown in the table Source Functions Digital multimeter DMM Note Also use a 100 standard resistor for the DCA and SINK functions and a high preci...

Страница 93: ...ments Ambient temperature 23 1 C Relative humidity 45 to 75 Warm up Before use warm up the calibration standard for the period of time specified for the stan dard Auxiliary digit indicator The value s...

Страница 94: ...ou can also select only the range in need of readjustment to adjust it separately Always make zero point 0 adjustments together with full scale FS adjustments CA71 24V 20mA 20 mA output SINK SINK H L...

Страница 95: ...nt Step 7 Using the lowest order pair of and keys adjust the reading of the calibration standard so that it matches the given CAL FS adjustment setpoint in Table 10 1 Step 8 Press the key to confirm t...

Страница 96: ...t be made Contact the vender from which you purchased the instrument 2 Notes on Resistance measuring Current Adjusting the 400 range requires drawing two types of resistance mea suring current 1 mA an...

Страница 97: ...ion standard TIP You can also select only the range in need of readjustment to adjust it separately Always make zero point 0 adjustments together with full scale FS adjustments 10 3 1 Adjusting DC Vol...

Страница 98: ...th reference to the input applied as described above Therefore you need not make any range adjustment with and keys Saving the adjustment setpoint results in the overwriting of existing data Be extrem...

Страница 99: ...t setpoint input of each range in Table 10 2 from the calibration standard to the H and L input terminals of the calibrator Step 7 Pressing the key confirms the CAL FS adjustment setpoint At this poin...

Страница 100: ...stment of Temperature Ranges CAL71 only Adjusting the temperature measuring ranges of the thermocouple func tion involves using special equipment to make reference junction com pensation adjustments F...

Страница 101: ......

Страница 102: ...positioned in the correct orientation Lead cables for source 98020 Black Black Black Black Red Red Red RJ sensor B9108WA Fuse A1501EF RS232 communication cable 91017 for CA71 only AC adapter A1020UP A...

Страница 103: ......

Страница 104: ...output 10 mA 1 Maximum load 12 V External power supply 5 28 V Excitation current 0 5 5 mA 3 If 0 1 mA add 0 25 or 0 6 C Subject device input capacitance 0 1 F or less TC source accuracy does not incl...

Страница 105: ...ut Maximum 100 Hz Notes CPM Counts per minute CPH Counts per hour Input frequency 45 65 Hz Input voltage range 10 100 Measurement method Average value rectification Temperature coefficient Accuracy sh...

Страница 106: ...ately 32 seconds 50 value sets sourced and measured values are stored as value sets with the same address up to 50 value sets can be stored Voltage terminal 300 V AC Current terminal 120 mA DC Fuses 1...

Страница 107: ...r measurement one red one black RD031 Carrying case 93016 Terminal adapter for CA71 99021 User s manual IM CA71 E Fuse A1501EF for current terminal input protection Four AA size LR6 alkaline batteries...

Страница 108: ...GAWA AMERICA DO SUL S A BRAZIL Phone 55 11 7295 1433 Facsimile 55 11 5522 5231 YOKOGAWA ENGINEERING ASIA PTE LTD SINGAPORE Phone 65 241 9933 Facsimile 65 241 2606 YOKOGAWA MEASURING INSTRUMENTS KOREA...

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