JOFRA mAcal - milliAmp Calibrator
Contents
1. signal JOF RA Sources and measures current Allows for calibration of transmitters in a two wire loop Stable source Internal 24 VDC supply for consistent loop power High resolution Read to 0 001 mA in the measurement mode of full scale reading Displays a percentage to provide for easy analysis of results Timesaving features Fast one key one function access to the features such as the step function or loop supply power Large display Includes large numbers for unit reading a percentage display and dedicated icons for calibrator status including a low battery indicator Traceable calibration For your confidence the unit is supplied with a calibration certificate that is fully traceable to a national standards lab such as NIST or NPL Complete marine program Part of a complete program of marine approved temperature pressure and signal calibrators including temperature sensors INSTRUMENTS CONTROLS VALVES 3317 Gilmore Industrial Blvd ARCO Louisville KY 40213 Engineering INC Ph 502 966 3134 SINCE 1954 www arcoengineering com Fx 502 966 3135 ISO 9001 Manufacturer Specification Sheet SS mAcal millAmp Calibrator mAcal The mAcal milliAmp Calibrator is an economical and easy to use calibra tion device for sourcing and measuring mA signals The instrument is designed specifically for 2 wire transmitter loops with 4 to 20 mA signals and it is delivered with2. PWR Switch between external and internal loop power supply EXT the 24 VDC of the current loop is generated by an external power supply and INT the 24 VDC of the current loop is gen erated by the mAcal itself Mains adapter Connection to mains adapter 6 VDC 230 mA Note The mains adapter does not charge rechargeable bat teries ON OFF Switching instrument on off Auto shut off to extend battery life user programmable mA setup 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 AUTO ramp or AUTO STEP function is started or stopped www jofra com Connection Connection Connection of Connection of test i test lead lead Display Shows numerical value in mA V or sec and for readout of error codes etc FUNC This key allows for changing functions between SOURCE mA MEASURE mA and MEASURE Volt function Step The STEP function is acti vated or de activated Up arrow Functions to increase entered values or to scroll up Down arrow Functions to decrease entered values or to scroll down JOFRA mAcal in softcase The mAcal calibrator is available separately and are supplied in a handy softcase that allows for complete operation of the unit while in the case The convenient internal arrangement offers you the space to store test
3. 8 Ibs 355g Instrument dimensions incl batteries leads and case Size L x W x H 6 85 x 2 6 x 1 0 in 174 x 66 x 26 mm Miscellaneous Operating ambient temperature 14 to 104 F 10 to 40 C Storage ambient temperature 4 to 122 F 20 to 50 C CE Conformity 89 336 EEC EN50081 1 EN50081 2 E EN50082 1 EN50082 2 91 157 EEC The JOFRA mAcal is type approved by Det Norske Veritas Find the certificate at www jofra com Approval Certificate NO cccccsseeeesesseeeeeeeeeeees A 10549 Adjusting the instrument Connect the mAcal to an external reference instrument as shown in Fig 1 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 Note The mAcal can only be adjusted in mA Adjustment of the VDC function is not Calibrating the instrument measure mA Connect the mAcal to an external reference instrument and a current source as shown Calibration is carried out in the following points 0 mA 4 mA 8 mA 12 mA 16 mA 20 mA and 24 mA If the mAcal displays EEEEE when measuring the 24 mA you must turn down the current until the EEEEE disappears Calibration must subsequently be carried out at a lower value e g 23 995 mA The deviation between the read value of the mAcal and the read value of the reference instrument must be 8 pA at a maximum Calibrating the instrument source mA Connect t
4. Nee ly 124718 Charger for rechargeable batteries 115 230 VAC See compensated le problem legen eaccuate JOFRA Signal Instruments Process signal measurement and simulation for easy control loop calibration and measurement tasks from handheld field instruments to laboratory reference level bench top instruments JOFRA JF Marine Instruments A complete range of calibration equipment for temperature pressure and signal approved for marine use FP Temperature Sensors A complete range of temperature sensors for industrial and marine use M amp G Pressure Testers Pneumatic floating ball or hydraulic piston dead weight testers with accuracies to 0 015 of reading M amp G Pumps Pressure generators from small pneumatic bicycle style pumps to hydraulic pumps generating up to 1 000 bar 15 000 psi because Calibration is a matter of confidence CALIBRATION INSTRUMENTS AMETEK Mansfield amp Green North America T 1 800 527 9999 cal info ametek com AMETEK Singapore Pte Ltd Singapore AMETEK Denmark A S T 65 6 484 2388 aspl ametek com sg Gydevang 32 34 3450 Aller d Denmark AMETEK Inc Beijing Rep Office China T 45 4816 8000 ametek ametek dk T 86 10 8526 2111 jofra ametek com cn AMETEK GmbH Germany T 49 2159 9136 510 info mct de ametek de Sales amp Service AMETEK Calibration Instruments UK Europe Asia Africa Middle East and South America T 44 0 1243 833 302 jofr
5. a ametek co uk Information in this document is subject to change without notice 2010 by AMETEK Inc www ametek com All rights reserved WWW J ofra com www jofra com Pub code SS mAcal Issue 1006
6. he mAcal to an external reference instrument as shown in Fig 3 Calibration is carried out in the following points 0 mA 4 mA 8 mA 12 mA 16 mA 20 mA and 24 mA The deviation between the adjusted value of the mAcal and the read value of the reference instrument must be 8 pA at a maximum www jofra com ORDERING INFORMATION 75 MACAL mdAcal Calibrator with standard accesories STANDARD DELIVERY e mdAcal Calibrator e mAcal e Soft carrying case AMETEK Calibration Instruments is one of the world s leading manufacturers and e 2 test leads with crocodile clip developers of calibration instruments for temperature e 4 batteries type LR6 AA pressure and process signals as well as for temperature sensors both from a commercial and a technological e User manual point of view JOFRA Temperature Instruments Portable precision thermometers Dry block and liquid bath calibrators 5 series with more than 25 models and temperature ranges from 90 to 1205 C 130 to 2200 F All featuring speed portability accuracy ACCESSORIES and advanced documenting functions with JOFRACAL calibration software 103964 Mains adapter for mAcal US Japan JOFRA Pressure Instruments 103950 Mains adapter for mAcal Europe Convenient electronic systems ranging from 25 mbar 103957 Mains adapter for mAcal UK to 1000 bar 0 4 to 15 000 psi multiple choices 124716 4x 1 5 Volt rechargeable batteries OF peoe rances puie e Glee
7. leads milliAmp Calibrator mAcal FUNCTIONAL SPECIFICATIONS Current source RNS chit ects ase eee eu acess ete A E EN Oto 24 mA RESONON sieve sane cama eia aan 0 01 mA Accuracy a2 eectccseceteecceate ee eriesesecesaencanenetes 0 05 of F S Maximum lOQC ccccccceceecceeeceeeeeeeaeesaeeseesaeesaeees 900 ohm Temperature coefficient 0 005 per C 10 to 40 C Ae ES 0 003 per F 14 to 104 F Current measurement E a S E Oto 24 mA ROSOIUNOT sieniin ERA EEEE EENE 0 001 mA Accuracy K srncie n 0 05 of F S Input impedance s sssssssnssrensrnnrnnnrenrrnrrennrnrrrnnrenne 10 ohm Temperature coefficient 0 003 per C 10 to 40 C P E T 0 002 per F 14 to 104 F Voltage measurement Ran oe 0 to 45 VDC ReSolUtON sp ccctanetscusnestmnean sccnaiciemuinnaidweantnndiunaenconatane 0 1 VDC PAG CU AG yest co ieecnctetnteeerasdecte kt etet pe peaaneet esses 0 5 VDC Input impedance ext ccosideinccsdicsesccnsatantecciessdaicdaectinies 10M ohm possible Fig 1 in Fig 2 mAcal milliAmp Calibrator JOF RA PHYSICAL SPECIFICATIONS Power supply 120 VDC Mains Adapters 103964 6 VDC 240 mA US E Japan 1 3mm DC female connector Batteries aansens 4 Type LR6 AA 1 5 VDC Alkaline Battery life c0 200 hours with external loop power E 20 hours with 12 mA output internal loop power Instrument weight incl batteries leads and case Weges S 0
8. traceable certification The keypad is easy to use and provides positive tactile feedback Each key is labeled for easy operation A large high contrast 5 digit LCD dis play indicates numeric values in mA V or sec The resolution is 0 001 mA in measurement mode The user can change the display to read in of Full Scale and flow readings are shown in of Flow The display also indicates error codes Visual warnings are displayed for loop mismatch reverse polarity and over range And is also equipped with a user adjustable automatic shut off feature that prevents accidental battery discharge when the unit is not in use A built in permanent fuse eliminates the need to replace the fuse in the case of overloads no need to return the unit to the factory to reset or replace the fuse The mAcal provides loop power in the range of 0 to 45 VDC and the instrument is designed to generate a stable 24 VDC supply for the loop The mAcal also reduces the time and complexity often associated with loop calibration The instrument features special fixed steps for perform ing linear and flow transmitter or valve positioner calibrations The instru ment has seven different built in current values and the user may choose between manual or automatic steps with 10 or 30 seconds between steps You can perform an entire test by placing the mAcal in the pro cess loop and take readings from the control room AMETEK CALIBRATION INSTRUMENTS JOF RA
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