Multifunction Process Calibrator
Contents
1. Step 8 To turn off the output press the ON key again The OFF icon appears on the LCD and no signals are sourced between the terminals Notes The frequency range can only be changed by pressing the RANGE key in the frequency set mode The frequency value and range can be changed when the frequency source function is in the ON or the OFF state 5 5 Sourcing a Number of Pulses The calibrator can source a preset number of pulse signals according to the preset frequency and amplitude Step 1 Using the PULSE key select the pulse source function The LCD shows the default value 10 Hz Step 2 Using the RANGE key select a frequency range 100Hz 1KHz 10Hz The selected function the default range source value and the unit of measure are shown in the lower portion of the LCD Step 3 Set the output value digit by digit using each pair of A V output setting keys Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Step 4 Pressing the VPEAK key switches to the amplitude setting2. For DC Current signal Figure 10 Step 1 Connect the black test lead cable for measurement to the COM input terminal and the red test lead cable to the mA input terminal Step 2 Connect the other end of the cable to the measuring terminals of the equipment under test while making sure the polarities are correct SOURCE CoM Viz om o 1 NNT om A S Figure 10 Measuring DC Current A Warning Before connecting the calibrator to the device under test switch OFF the power to the device Do not apply voltage or current exceeding the allowable voltage 60 V peak or current 55 mA Exceeding the limits will endanger the instrument and create a risk of personal injury due to electrical shock Mistaking the voltage input terminal for the mA current input terminal and vice versa when wiring is extremely dangerous Take great care in making connections always check the accuracy of the connection configuration The current input terminals are equipped with a built in current input protection fuse Over current input to the terminals will cause the fuse to blow If the fuse is blown replace it with one with the specified ratings For details on fuse replacement see the Replacing the battery and fuse section A Warning Wiring or operational errors can lead to damage to the instrument and personal injury due to electrical shock Exercise the utmost care when carrying out the measurement tasks 6 2
3. V keys Step 3 To save the setting press the ON key and the LCD will show the SAVE symbol Page 19 PRCSO EN V2 1 11 11 7 4 Setting CMSET Step 1 Use the MODE key to move to the CMSEt parameter at the top of the LCD if it s not already displayed Step 2 From selections PCM DPM select DPM using the right pair of A V keys Step 3 To save the setting press the ON key and the LCD will show the SAVE symbol 7 5 Factory default Step 1 Use the MODE key to move to the FACry parameter at the top of the LCD if it s not already displayed Step 2 Press the ON key to revert to the default values as shown below AP OFF 10 minutes BL OFF 10 seconds FRSET 50 Hz CMSET PCM Page 20 PRCSO EN V2 1 11 11 8 Replacing Batteries or fuses A Warning To avoid possible electric shock remove the test leads from the calibrator before opening the battery door and ensure that the battery door is tightly closed before switching the calibrator ON Caution To avoid battery leakage and possible explosion ensure correct battery polarity Do not short circuit the batteries Do not disassemble heat or expose batteries to fire When replacing the batteries use only the specified type four AAA 1 5V Remove the batteries if the meter is to be stored for a long period Step 1 Remove the test leads and charger before replacing the batteries or fuses and switch OFF the meter Figure 16 Rep
4. LCD shows the circuit OPEN or CLOSED icon 6 6 Measurement filtering function The measurement filtering function stabilizes the measured value displayed on LCD In the DCV or DCmA function pressing the AVG key facilitates an averaging calculation of the samples and the LCD shows the AVGP symbol Pressing the AVG key again cancels the calculation and the AVG symbol switches OFF 6 7 Measured Value holding function The read hold function can be used to freeze a measurement the held measurement is shown on the upper area of the LCD Pressing the HOLD key selects the read hold mode and the LCD displays the HOLD symbol To cancel the selection press the HOLD key again and the HOLD symbol will switch OFF Page 18 PRCSO EN V2 1 11 11 7 Programming the Calibrator s Global Settings Press and hold the ZERO key while switching the meter ON Release the ZERO key 3 seconds after the LCD switches ON The following parameters can be programmed by the user when the meter is in this state The top row of the LCD display shows the parameter name and the bottom row of the LCD shows the setting Use the MODE key to scroll the parameters and then follow the instructions below to configure each parameter 7 1 Setting Auto power off time AP OFF Step 1 Use the MODE key to move to the AP OFF parameter at the top of the LCD if it s not already displayed Step 2 Set the time from 0 60 min
5. Measuring DC Voltage Step 1 Ensure that the test lead cables are not connected to the instrument or device under test Step 2 Using the function key V select DC Voltage measurement function Step 3 Connect the test lead cables to the terminals of the instrument under test Step 4 Using the RANGE key select a desired range from 200m V 5V 50V The selected function the measured value and the unit of measure are shown in the upper area of the LCD Page 16 PRCSO EN V2 1 11 11 6 3 Measuring DC Current Step 1 Ensure that the test lead cables are not connected to the instrument or device under test Step 2 Using the function key mA select the DC Current measurement function Step 3 Connect the test lead cables to the measuring terminals of the instrument under test Step 4 The selected function the measured value and the unit is shown in the upper area of the LCD 6 3 1 mA Display In the mA measurement mode the preset value is displayed on the primary numerical display area and the mA is displayed on the smaller secondary numerical display area See the equation below 100 current measured value mA 4mA mA _ 16 mA 6 3 2 Using the Calibrator as a 24 V Loop Power Supply This function helps to switch ON a 24V loop power supply connected in line with the measured DC current circuit in which the calibrator can be used as a loop power supply that can calibrate a 2 wire converter Step 1 When the calibrator
6. Source current Source pulse 24V Loop Power Supply ON Not used Beeper for measurement continuity Not used Measured value HOLD Measurement average value Not used Main numerical display Unit of measure for main display DCmA 25 or 100 manual step source Figure 4 LCD display PULSE LOOP PRESSURE kg cm H 0 mmHg psimbar ee C0 Ee E SA p 2a A a E mAV Start source number of pulses DCmA auto stepping or sweeping source function 24V Loop Power Supply ON DCmA auto stepping or sweeping source Unit of measure for secondary display Secondary numerical display Page 6 PRC50 EN V2 1 11 11 Source Measurement Preparations Precautions for Safe Use of the Instrument When using the instrument for the first time be sure to read the instructions given in Section 4 Precautions for Safe Use of the Instrument Do not open the instrument s case Contact the vendor for service In case of failure Should the instrument begin to emit smoke give off an unusual odor or show any other anomaly immediately switch OFF the POWER Also switch OFF power to the object under test that is connected to the input terminals Contact the vendor General Handling Precautions Before transporting the instrument switch OFF power to the object under test and then power off the meter Finally detach all lead cables from the instrument Use a dedicated carry case when transporting the instrument Do not bring any el
7. Source value set keys Decrement source set point 11 MODE key Mode key press to change the function mode 12 ON key Switch ON OFF measurement source function 13 Power key Switch ON OFF power 14 Backlight Switch ON OFF backlight 15 V Key Select measurement source DCV function 16 PULSE Key Select source pulse function 17 mA Key Select measurement source mA function 18 FREQ Key Select measurement source FREQ function 19 gt Key Select measurement continuity function 20 RANGE Key Select measurement source range mA percentage toggle key 21 UNIT Key not used 22 LOOP key Switch ON OFF 24V Loop power 23 ZERO Key Set the source value to its default value In pulse source function set the pulse value 24 START Key Source auto pulse value Switch ON the mA auto stepping or sweeping function HOLD freeze the measured value 25 Mr Key In DCMA source function select the auto wave type In frequency or pulse source set the frequency value 26 In mA source function select 25 or 100 manual step output type 25 100 Key In pulse number mode frequency source set the amplitude value Measure the average value Page 5 PRCSO EN V2 1 11 11 4 3 Display Screen Figure 4 shows a typical display screen samo ao 0 DB sx rH 7 OD 0 SB lt x lt e lt c Measurement Source Measurement Source frequency Not used Battery level indicator Measurement Source function ON Source function OFF Measurement Source voltage Measurement
8. as percentage of set value percentage of range Function Reference Range Resolution Remark Accuracy DC voltage 1000mV 100 00mV 1100 00mV 10V 0 02 rdg 0 01 range Maximum output current 2mA 10V 1 0000V 11 0000V 0 1mV 0 02 rdg 0 01 range Maximum output current 5mA DC current 20mA 0 000mA 22 000mA 1pA 0 02 rdg 0 02 range External supply for simulate mA 5V 28V Maximum load 1KQ at 20mA FREQ 100Hz 1 00Hz 110 00Hz 0 01Hz Output voltage 1 11 Vp p zero based waveform Amplitude accuracy 10 0 5V 1KHz 0 100KHz 1 100KHz 1Hz eaten Maximum load gt 100 KQ Duty Cycle 50 10KHz 1 0KHz 11 0KHz 0 1KHz PULSE 100Hz 1 to 100 000cycles 1cyc 1KHz 10KHz LOOP 24V Maximum current 25 mA 10 Short circuit protected Notes Temperature Coefficient 0 1 times the applicable accuracy specification per degree from 41 F to 64 F 5 C to 18 C and 82 F to 104 F 28 C to 40 C Maximum voltage between any output terminal and earth ground 30Vpeak Maximum output current Approximately 25mA Copyright 2011 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form Page 24 PRCSO EN V2 1 11 11
9. is in the current measurement mode pressing the LOOP key causes the LCD to show the LOOP symbol and the built in 24V loop power of the calibrator will be switched ON Step 2 Connect the calibrator with the loop current terminals of the converter as shown in Figure 11 5 s transmitter Wa Figure 11 A 24v loop power circuit supply Note Since the function discussed above requires a significant amount of DC current 25 mA battery operation will reduce the battery life considerably Page 17 PRCSO EN V2 1 11 11 6 4 Measuring Frequency Step 1 Ensure that the test lead cables are not connected to the instrument under test Step 2 Using the function selector key FREQ select the frequency measurement function Step 3 Connect the test lead cables to the measuring terminals of the instrument under test Step 4 Using the measurement RANGE key select the suitable range 500Hz 5KHz 50KHz The selected function the measured value and the unit is shown in the upper part of the LCD 6 5 Measuring Continuity Continuity measurements are used to detect the completeness of a circuit or wire e g a resistance smaller than 250 ohms Using the function selector key select the continuity measurement function The LCD displays the continuity symbol e on the upper area Connect the device as shown in Figure 8 the beeper will sound continuously if the loop circuit resistance is below 2500 The
10. lead continuity Replace damaged test leads before using the meter When using the probes keep fingers behind the finger guards on the probes Connect the common test lead before connecting the live test lead When disconnecting test leads disconnect the live test lead first Do not use the meter if it operates abnormally Protection may be impaired When in doubt have the meter inspected Do not operate this instrument in areas where inflammable or explosive gases or vapor exists It is extremely hazardous to use the instrument under such environments Do not operate the meter near explosive gas vapor or dust Use only four 4 AAA 1 5V batteries properly installed in the meter case to power the meter Disconnect the test leads before changing source or measurement functions When servicing the meter use only specified replacement parts To avoid false readings which could lead to possible electric shock or personal injury replace the batteries as soon as the low battery indicator appears Page 3 PRCSO EN V2 1 11 11 Caution To avoid possible damage to meter or to equipment under test Disconnect the power and discharge all high voltage capacitors before testing resistance or continuity Use the proper jacks functions and ranges for the measurement or source operation in question 4 Calibrator Description Refer to Figure 1 1 LCD display Digit up down adjust buttons Control keypad Measurement terminal
11. 2 F 18 C to 28 C Relative humidity of 35 to 70 non condensing Accuracy is expressed as percentage of reading percentage of range Function Range Resolution Accuracy Remark Reference DCV 200mV 20 00mV 220 00mV 10yuV 0 02 rdg 0 02 range Input Resistance 100MQ 5V 0 5000V 5 5000V 0 1mV 0 02 rdg 0 01 range Input Resistance 1MQ 50V 5 000V 55 000V 1mV 0 03 rdg 0 01 range DCmA 50mA 4 000mA 55 000mA 1pA 0 02 rdg 0 01 range Input Resistance 50 FREQUENCY 500Hz 3Hz 500 00Hz 0 01Hz 2 digits Input Impedance 100kQ min Sensitivity 3Vp p min Duty Cycle 50 5KHz 3Hz 5 0000KHz 0 1Hz 50KHz 3Hz 50 000KHz 1Hz CONTINUITY 2500 beeper Open circuit voltage 2 5V Notes DCV Normal Mode Rejection Ratio NMRR 260dB at 50Hz or 60Hz Common Mode Rejection Ratio CMRR 2120dB at 50Hz or 60Hz Reading rate 2 readings per second Temperature Coefficient 0 1 times the applicable accuracy specification per degree from 41 F to 64 F 5 C to 18 C and 82 F to 104 F 28 C to 40 C Maximum voltage between V Q Hz terminal and COM terminal 60 Vp p Maximum Input current 55mA Protected with a 63mA 250V fast blow fuse Page 23 PRC50 EN V2 1 11 11 General Specifications for Source Mode These specifications assume e 1 year calibration cycle e Operating temperature of 64 F to 82 F 18 c to 28 c e Relative humidity of 35 to 70 non condensing Accuracy is expressed
12. ON The calibrator sources the preset 4 20 mA current signal between the output terminals Step 4 To turn off the output press the ON key again The OFF icon appears on the LCD and no signals are sourced between the terminals 5 3 2 Auto stepping and auto sweeping 4 20mA function The user can set a 4 20 mA range within which to source current in 4 20mA increments or decrements in auto stepping mode or in auto sweeping mode 80 seconds are required to finish a 4 20mA cycle in auto sweeping mode and 20 seconds are required for auto stepping mode Step 1 In the DC current mode press the Mr key to display the auto stepping mode signal m on the lower part of the screen and press it again to display the auto sweeping mode signal M The default source value will be shown Step 2 Pressing the ON key causes the indicator on the LCD to change from OFF to ON The calibrator sources the default 4 20 mA current signal between the output terminals Step 3 Pressing the START key starts the auto stepping and auto sweeping mode The RUN icon is displayed in the lower part of the LCD Step 4 Pressing the START key again stops the auto stepping and auto sweeping mode The RUN icon switches OFF Step 5 Pressing the ON key stops sourcing and the OFF icon is displayed on the screen No signals are sourced between the terminals Notes Press t
13. User Guide EXTECH INSTRUMENTS A FLIR COMPANY Multifunction Process Calibrator Model PRC50 MEASURE SOURCE J FREQ we an oN DCV DCA PULSE LOOP PRESSURE Am Dea kg cm H dila psimbar f C amp CYC BE ti f Hz n a p A AR see a a mAV Set 25100 RUNMA LOOP Multifunction Calibrator PRC50 CE 2 ls EE mA FREQ V PEAK AVG HOLD MEASURE SOURCE a a f Hz ATE m pa an VHz Maxam G Loop T 30V is 6 Page 1 PRCSO EN V2 1 11 11 1 Introduction This multifunction process calibrator is a handheld battery operated instrument that measures and sources electrical and physical parameters Main Features Measure DC voltage DC current frequency and continuity Source DC voltage DC current simulation transmitter frequency and pulse Additional features Manual step source auto step and sweeping step source Measure source mA display Wave filter function Manual hold function 2 Standard Accessories Ensure that the package contains all of the accessories listed below If items are damaged please contact the vendor from which the product was purchased One 1 set of Industrial Test Leads One 1 set of Standard Test Leads One 1 set of Alligator clips User s Guide Two 2 Fuses 50mA 250V and 63mA 250V Page 2 PRC50 EN V2 1 11 11 3 Safety Information For the correct and safe use of the instrument be sure to follow the cautionary notes stated in th
14. e the calibrator is used together with the supplied test lead cables for measurement the allowable voltage to ground of the input terminals is 60 V peak maximum To avoid electrical shock do NOT use the calibrator at voltages exceeding the maximum voltage to ground Notes Using the HOLD key the measured value can be frozen on the display The LCD shows all dashes on the upper area when the range is changed by the user If the input is over loaded over range the measured value on the LCD indicates oL 6 1 Connecting Cables to Terminals For DC voltage mV and continuity Figure 8 Step 1 Connect the black test lead cable for measurement to the COM input terminal and the red test lead cable to the mV input terminal SOURCE black MEASURE mA red Figure 8 Measuring DC voltage and continuity Step 2 Connect the other end of the cables to the terminal points of the equipment under test while ensuring that the polarities are correct For DC Voltage V signal Figure 9 Step 1 Connect the black test lead cable for measurement to the COM input terminal and the red test lead cable to the VHz input terminal Step 2 Connect the other end of the cable to the measuring terminals of the equipment under test while making sure the polarities are correct Z nae yl V aeo He PEAK NI ale red Figure 9 Measuring DC Voltage and Frequency Page 15 PRCSO EN V2 1 11 11
15. e to the presence of flammable gases exists Notes Use the instrument under the following environmental conditions when precise measurements are required Ambient temperature range 74 F 23 C 5 ambient humidity range 20 to 80 RH non condensing When using the instrument within a temperature range of 32 to 64 F 0 to 18 C or 82 to 122 F 28 to 50 C add a value based on the temperature coefficient shown in the Specifications section to the given accuracy rating When using the instrument at an ambient humidity of 30 or lower prevent electrostatic charges by using an anti static mat or other alternative means Condensation may occur if the instrument is relocated from places with low temperature and humidity to places with high temperature and humidity or if the instrument experiences a sudden temperature change In these cases leave the instrument under the given ambient temperature for at least one hour to ensure that the instrument is free from condensation before using the instrument Page 7 PRCSO EN V2 1 11 11 Indication of Battery Level The battery replacement indicator shows the battery level in five stages Full battery man The battery level is below 50 full oe The battery level is below 25 full Low battery The battery icon flashes in sequence when charging Note that the battery replacement indicator is driven by directly measuring the battery voltage when the calibrator is in actual ope
16. ectrified object close to the input terminals since this may damage the internal circuitry Do not apply any volatile chemical to the instrument s case or operation panel Do not leave the instrument in contact with any product made of rubber or vinyl for a prolonged period Be careful not to let a soldering iron or any other heat emitting object come into contact with the operation panel panel is made of thermoplastic resin Use a soft damp cloth to gently wipe the outer surfaces of the instrument Water that is allowed into the instrument can result in malfunction For handling precautions regarding the batteries see Installing or Replacing the Batteries 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 temperature range 32 to 122 F 0 to 50 C ambient humidity range 20 to 80 RH non condensing Place the instrument on flat and level areas Do not use the instrument in locations that are Exposed to direct sunlight or close to any heat source Exposed to frequent mechanical vibration Close to an electrical noise source such as high voltage equipment or motive power sources Close to any source of intensive electric or electromagnetic fields Exposed to large amounts of grease fumes hot steam dust or corrosive gases Exposed to unstable areas such as where a risk of explosion du
17. eys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit in question quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Pressing the ZERO key initializes the output set point to the default value 0 Step 3 Pressing the ON key causes the indicator on the LCD to change from OFF to ON The calibrator sources the present DC voltage between the output terminals Step 4 To turn off the output press the ON key again The OFFI icon appears on the LCD and no signals are sourced between the terminals 5 3 Sourcing DC Current Step 1 Use the mA key to select the desired source function 20mA The default value and unit of the selected source function will be displayed on the LCD Step 2 Set the output value digit by digit using A V keys Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously chan
18. eys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Step 4 Pressing the Vpeak key once switches to amplitude setting mode The LCD provides a reading of 1V Step 5 Set the output value digit by digit using each pair of A V output setting keys Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Page 12 PRC50 EN V2 1 11 11 Step 6 To re enter into the frequency set mode press the FREQ key to set the frequency Step 7 Pressing the ON key causes the SOURCE indicator on the LCD to change from OFF to ON The calibrator sources constant pulse signals responding to the preset frequency and amplitude between the output terminals
19. ges the digit in question quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Pressing the ZERO key initializes the output set point to the default value 0 o Step 3 Pressing the ON key causes the indicator on the LCD to change from OFF to ON The calibrator sources the preset DC current between the output terminals Step 4 To turn off the output press the ON key again The OFF icon appears on the LCD and no signals are sourced between the terminals Page 10 PRCSO EN V2 1 11 11 5 3 1 Manually Set 25 100 4 20 mA Function The source value in 4 mA or 16mA increments or decrements can be set within the 4 20 mA current range Step 1 In the DC current function press the 25 100 key to display 25 SET on the lower part of the screen and press it again to display 100 SET The default source value will be displayed Step 2 Using each pair of A VY output setting keys set the signal in a step by step manner In 25 set point mode set the signal in 4 mA increments in the order 4 8 12 16 20 with each press of the key In 100 set point mode set the signal in 16 mA increments in the order 4 20 with each press of the key Pressing the ZERO key initializes the signal set point to the default value 4mA Step 3 Pressing the ON key causes the indicator on the LCD to change from OFF to
20. he START key again to continue the auto stepping and auto sweeping mode after stopping them The RUN icon is displayed on the lower part of the screen The ability to use the START key to start mA auto stepping and auto sweeping mode is only available when the source function is in the state Page 11 PRCSO EN V2 1 11 11 5 3 3 mA display In the mA source mode the preset value is displayed on the primary numerical display and the ma is displayed on the smaller secondary numerical display 100 current measured value mA 4mA nA 16 mA Note Increment decrement set is not available in mA mode 5 3 4 4 20 mA simulate transmitter source Connect the calibrator and loop power as shown in Figure 7 Operate as described in the DC current Source section black loop power supply display instrument or controller 24V Figure 7 4 20 mA simulation transmitter source 5 4 Sourcing Frequency The calibrator can source a constant pulse signal responding to the preset frequency and amplitude Step 1 Using the FREQ key select frequency source function The LCD shows the default frequency value 10 Hz Step 2 Using the RANGE key select a frequency range from 100Hz 1KHz 10KHz The selected function the default range source value and the unit will be shown on the LCD Step 3 Set the output value digit by digit using each pair of A V output setting keys Each pair of A V k
21. is manual whenever handling the instrument Extech Instruments shall not be held liable for any damage resulting from use of the instrument in a manner other than prescribed in the cautionary notes A A Warning identifies conditions and actions that pose hazards to the user a Caution identifies conditions and actions that may damage the meter or the equipment under test Refer to Table 1 for the international electric symbols adopted by the calibrator Table 1 International Electrical Symbols WARNING a5 FAR TAGRHMND A INFORMATION AWarning To avoid possible electric shock or personal injury Do not apply more than the rated voltage as marked on the calibrator between terminals or between any terminal and earth ground Before use verify the meter s operation by measuring a known voltage Follow all equipment safety procedures Do not connect the probe of the test leads with any live power when the other end has been inserted into the current jack Do not use the meter if it is damaged Before using the meter 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 the measurement Make sure the battery door is closed and latched before operating the meter Remove test leads from the meter before opening the battery door Inspect the test leads for damaged insulation or exposed metal Check test
22. lacing batteries and fuses Step 2 Remove the rubber protective holster as shown in Figure 16 With a standard blade screwdriver turn each battery door screw a quarter turn counter clockwise to remove the battery door Step 3 Replace with four 4 new AAA alkaline batteries using the instructions shown on the battery door Replace the blown fuses with same type F1 50mA 250V or F2 50mA 250V or F3 63mA 250V Step 4 Reinstall and tighten the battery door affix the protector before using the meter Page 21 PRCSO EN V2 1 11 11 9 Maintenance 9 1 Cleaning the calibrator A Warning To avoid electrical shock or damage to the meter service the meter with specified replacement parts only and do not allow water to enter the meter housing Caution To avoid damaging the plastic lens and case do not use solvents or abrasive cleansers Clean the Calibrator with a soft cloth dampened with a mild soap 9 2 Calibration Repair and Technical Support Services Extech offers repar and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Care Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify Page 22 PRCSO EN V2 1 11 11 10 Specifications General Specifications for Measurement Mode these specifications assume A 1 year calibration cycle An operating temperature of 64 F to 8
23. mode The LCD shows a reading of 1V Step 5 Set the output value digit by digit using each pair of A W output setting keys Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Step 6 Press the CYC key to enter the pulse number set mode the LCD will show the default number of 1 CYC Step 7 Set the output value digit by digit using each pair of A V output setting keys Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Step 8 To re enter the frequency set mode press the FREQ key Page 13 PRCSO EN V2 1 11 11 Step 9 Pressing the ON key causes the SOURCE indicator on the LCD to change from OFFF to ON and the calibrat
24. or sources low level signals between its output terminals Step 10 Press the START key to allow the calibrator to source the set number of pulses responding to the preset frequency and amplitude the LCD will show the RUN icon Step 11 When source is complete the calibrator automatically switches OFF the output and ceases operation The RUN symbol also switches OFF Step 12 To switch OFF the output press the ON key again The OFF icon appears on the LCD and no signals will be sourced between the terminals Notes The frequency range of the pulse can only be changed by pressing RANGE in the frequency set mode When the RUN symbol switches OFF the user can change the frequency and amplitude when the source function is in ON or OFFF During the pulse sourcing process pressing the START key causes the calibrator to switch OFF the output the RUN icon switches OFF also Press the START key again to restart the sourcing function Restarting the pulse output requires that the source function be in the ON state 5 6 Zero off function In any range of DC voltage or DC current pressing the ZERO key initializes the preset source value In the frequency and pulse modes the ZERO key function is unavailable Page 14 PRCSO EN V2 1 11 11 6 Measurements The calibrator measures DC voltage DC current frequency and continuity A Warning In applications wher
25. ration Consequently the indicator may read differently depending on the battery load condition e g the load condition of the source output or on off state of the measurement function To replace batteries and or fuses refer to Section 12 of this User Guide Switching Power ON Press the Power key once to switch ON the calibrator Press and hold the Power key for 2 seconds to switch it OFF Automatic Power OFF When the calibrator is running on batteries and no key is pressed for approximately ten minutes the calibrator switches OFF automatically The automatic power off time can be programmed or set to the factory default state see the Global Settings section Switching the LCD Backlight ON and OFF Press the backlight key to switch ON the backlight press again to switch it OFF Battery life is shortened by backlight overuse Notes The backlight automatically switches OFF after 10 seconds The time can be programmed or reset to the factory default condition see the Global Settings section Page 8 PRCSO EN V2 1 11 11 5 Source The calibrator can source a DC voltage DC current resistance frequency and pulse signal A Warning To avoid electrical shock do not apply more than the rated voltage as marked on the calibrator between terminals or between any terminal and earth ground Always use the calibrator in locations with a voltage to ground value below 30Vpeak Caution Do not apply any voltage to the output
26. s ak WON Source terminals Figure 1 Meter Description 4 1 Measurement Source Terminals EA oos 9 A DE h 432W kale Set 25100 Figure 2 shows the calibrator s measurement source terminals Table 2 explains their use Table 2 Measurement Source Terminals 22mA 3 my M axed ki ixan Terminal Function 1 Measurement Signals DCmV 2 Measurement Signals DCV FREQ 3 Measurement Signals DCmA Common return terminal for all 4 measurement functions 5 Source Signals DCmA Source Signals Simulate mA 6 Source Signals DCmA LOOP Terminal 24VDC Loop Power Terminal 7 Common return terminal for source functions 8 Source Signals DCV FREQ PULSE Page 4 Figure 2 Measurement Source Terminals SOURCE mA COM COM Vz Paq Ooa 8 Z MM E A 7 SLOOP j PEAK N i PEAK T j t N W T Y A Da ax Bama 4 y Ss CaN J PRCSO EN V2 1 11 11 4 2 Keys Figure 3 lists the calibrator s function keys and Table 3 explains their use 9 10 PULSE f mA 19 RANGE 20 2 1 it FREQ V PEAK AVG HOLD 2 2 23 25 26 24 Figure 3 Calibrator Function Keys Table 3 Function Key Descriptions No Name Function 1 5 Source value set keys Increment source set point 6 10
27. terminals for ranges other than 4 20mA simulating transmitter outputs Otherwise the internal circuitry may be damaged 5 1 Connecting Cables to Terminals For DC voltage frequency or pulse see Figure 5 Step 1 Connect the black lead cable for source to the COM output terminal and the red lead cable to the Vhz output terminal Step 2 Connect the other ends of the cables to the input of equipment under test while making sure the polarities are correct N my axe He oro Figure 5 Sourcing DC voltage frequency and pulse For DC current see Figure 6 Step 1 Connect the black lead cable for source to the mA output terminal and the red lead cable to the mA LOOP output terminal Step 2 Connect the other ends of the cables to the input of equipment under test while making sure the polarities are correct 7 MEASURE SOURCE mA COM COM Viz OoOO SA 3 suum mv Miny oon Hz f PEAK 22mMA p Kaxa OOF PEAK LL MAX 22mA mA Figure 6 Sourcing DC Current Page 9 PRCSO EN V2 1 11 11 5 2 Sourcing DC Voltage Step 1 Use the V key to select the DC voltage source function and then select the desired range from 1000mV 10V by pressing the RANGE key The default value the unit of the selected source function and the source DC Current range will be displayed on the LCD Step 2 Set the output value digit by digit using A V keys Each pair of A V k
28. utes using the second pair of A Y keys counting right to left Each press of the A YW key equals one 10 minute increment or decrement Press and hold a key to scroll quickly Step 3 To save the setting press the ON key and the LCD will show the SAVE symbol Tip The value 0 indicates that the automatic power off function is disabled 7 2 Setting Backlight time Step 1 Use the MODE key to move to the BL OFF parameter at the top of the LCD if it s not already displayed Step 2 Set the time using the A V keys the unit of measure for the time is seconds and the range is 0 3600 seconds Each pair of A V keys corresponds to each digit of the LCD reading Each press of the A V key increases or decreases the digit Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow allowing the output value to be set without interruption Holding down the A Y key continuously changes the digit quickly The value won t change if it is increased or decreased to the Maximum or Minimum value Step 3 To save the setting press the ON key and the LCD will show the SAVE symbol Note When value is 0 the backlight will not switch OFF automatically 7 3 Setting the frequency Step 1 Use the MODE key to display the FRSET parameter at the top of the LCD if it s not already displayed Step 2 Shift between 50Hz and 60Hz using the right pairof A
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