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Summary of Contents for Eurotron UniCal mA
- Page 1 EUROTRON ITALIANA s.r.l. Viale F.lli Casiraghi 409/413 20099 Sesto S. Giovanni (MI) - Italy Tel. +39-02-248820.1 Fax +39-02-2440286 e u r o t r o n UniCal mA Multifunction process current indicator - simulator Instruction Manual ed. 02a...
- Page 2 ONWARDS This publication contains operating instructions, as well as a description of the principles of operation, of the UniCal mA portable calibrator. The information covers all models of the instrument, including its options and accessories. The manual is a complete "USER GUIDE", providing step-by-step instructions for operating the UniCal mA in each of its designed functions.
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Page 3: Table Of Contents
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a INDEX GENERAL PERFORMANCE Instrument codes ------------------------------------------------------------------------------------------------6 Specifications ----------------------------------------------------------------------------------------------------7 GENERAL FEATURES Flexibility ----------------------------------------------------------------------------------------------------------9 Self calibration ---------------------------------------------------------------------------------------------------9 Keyboard ----------------------------------------------------------------------------------------------------------9 Display-------------------------------------------------------------------------------------------------------------9 Generator mode (Passive external circuit - no power supply on the external loop) --------------9 Simulator mode (Active external circuit - power supply on the external loop) ---------------------9 Measuring mode - normal -------------------------------------------------------------------------------------9 Measuring mode - power (Passive external circuit)--------------------------------------------------- 10 Power supply mode ------------------------------------------------------------------------------------------ 10... - Page 4 Digital interface program mode ------------------------------------------------------------------------ 25 8.7.2 Digital output wiring practice---------------------------------------------------------------------------- 26 8.7.3 Adaptor ( TTL to RS 232 )------------------------------------------------------------------------------- 26 8.7.4 Communication protocol from UniCal mA to a computer -------------------------------------- 27 8.7.5 Computer request for UniCal settings ---------------------------------------------------------------- 28 8.7.6 Communication programs------------------------------------------------------------------------------- 29 MAINTENANCE...
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Page 5: General Performance
Instruction Manual MM850099 ed.02a GENERAL PERFORMANCE The portable indicator - simulator UniCal mA is an instrument designed to perform, in a modern and practical way, all the most popular process current check-outs and calibration, both in laboratory and field work. -
Page 6: Instrument Codes
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a Instrument codes UniCal mA - A Basic configuration of the instrument includes a soft vinyl carrying case with shoulder strap and an instruction manual. Table Power supply 120V ac 50/60 Hz - USA plug... -
Page 7: Specifications
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a Specifications • IN / OUT parameter mA and % • Ranges: from 0.00 to 22.00 mA from 4.00 to 20.00 mA • Resolution: 0.01 mA or 0.1% • Limits of error: ±0.05% of the reading +10µA (The limits of error are defined at the ambient temperature of 23°C ±2°C for 30 days without the use of the autocalibration program) •... - Page 8 _______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a 5,2 V (nominal) • Program release identification: release code on the display • Operating environment temperature range: from -5°C to +50°C • Storage temperature range: from -20°C to 60°C • Case: • Dimensions: 210 x 96 x 40 mm •...
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Page 9: General Features
Flexibility Advanced flexibility of performance has been achieved using microprocessor technology. The indicator-simulator UniCal mA is a complete system for check outs, measurements and calibrations built into a single compact portable instrument. The simulated or measured values can be directly indicated in electrical units (mA) or technical units (%). -
Page 10: Measuring Mode - Power (Passive External Circuit)
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a Measuring mode - power (Passive external circuit) The instrument provides 24V dc power for operating a 2-wire transmitter and, simultaneously, reads the loop current in percent (-25.0 to +100,0%) or milliamperes (0.00 to 20.00 mA). Power supply mode The instrument can be used as a loop power source (24V dc with a maximum current of 22 mA). - Page 11 _______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a The case, made of shock-resistant and self-extinguishing ABS, is ergonomically designed for easy practical operation. The instrument is supplied in a vinyl protective case with carrying strap for easy transportation. _________________________________________ 11 ________________________________________...
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Page 12: Physical Description
Instruction Manual MM850099 ed.02a PHYSICAL DESCRIPTION The UniCal mA portable calibrator consists of a rugged and compact case, a mother board with all base functions, a tactile polycarbonate membrane keyboard, an LCD display and a group of four Ni-Cd rechargeable batteries. -
Page 13: Functional Description
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a FUNCTIONAL DESCRIPTION The block diagram of the UniCal mA portable calibrator is shown in the figure below: Ref. µP IN/OUT Display P.S. Keyboard +24V The functional blocks of the instrument are as follows: •... -
Page 14: Input Circuit
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a power -ON- key power -OFF- key t / s simulation value cursors (1 L.S.D. step) memory load keys step value setting on ramp simulation STEP IN - OUT memories 0, 1, 2 set-up procedure SELECT AVERAGE average measurements IN-OUT mode selection... -
Page 15: Digital To Analog Converter
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a The character generation is by a dedicated secondary microprocessor driven by the bus of the main microprocessor. The 16 characters are displayed with a 7 x 5 dot matrix. Digital to analog converter The digital to analog is based on a special reconfiguration of the A/D integrated circuit. A section of the analog switch and output amplifier are also operative. -
Page 16: Unpacking
If any mechanical damage is noted, report the damage to the shipping carrier and then notify EUROTRON directly or its nearest agent, and retain the damaged packaging for inspection. A label, inside the battery container, indicates the serial number of the instrument. -
Page 17: Pre-Operational Check
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a PRE-OPERATIONAL CHECK The instrument is powered by four Ni-Cd rechargeable batteries. The external battery charger, supplied as standard, may be ordered for either 110-120 Vac or 220-240 Vac power source. To modify the charger's power voltage follow the instructions in par. 8.2. Before the first use of the instrument carefully verify the nominal voltage value of the charger;... -
Page 18: Electrical Connections (Input-Output)
Make sure that IN/OUT terminals are connected with the correct polarity. Wiring practice Although the UniCal mA portable calibrator is designed to be insensitive to transients or noise, the following recommendations should be followed to reduce ac pick up in the signal leads and to ensure good performance. - Page 19 _______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a The fig.7.1 shows some examples of input/output wiring and connections. _________________________________________ 19 ________________________________________...
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Page 20: Operations & Applications
______________________________________ Instruction Manual MM850099 ed.02a OPERATIONS & APPLICATIONS The UniCal mA portable calibrator has been factory calibrated before shipment. During start-up the operator should only select and load the pertinent application parameters as described in the following paragraphs. Rechargeable batteries The instrument is powered by four built-in rechargeable batteries. -
Page 21: Battery Voltage Indication
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a To power the instrument actuate the <ON> key (fig. 8.3.A); the indication of fig. 8.3.B will appear for a few seconds. ™ . . . Un i Ca l . mA. . . ™ Fig. -
Page 22: Parameter Selection
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a After diagnostic routine, the calibrator will be forced into the "IN" function with the active parameter previously selected (i.e. with the indication of fig.8.5.1.B). 0 . 0 0 Fig. 8.5.1B Press <IN/OUT> key to select the simulation mode with an indication as per fig. 8.5.1.C. 0 . -
Page 23: Hold Function
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a Press the <AVERAGE> key to enable the "Average" mode The display will show a reading as in fig. 8.5.3.A I Na v 0 . 0 0 Fig. 8.5.3A To disable the "Average" mode press again the <AVERAGE> key; 8.5.4 Hold function The hold function is used to freeze on the display the last measured value. -
Page 24: Scale Factor" Mode
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a • Press <ENTER> + <STEP> keys to load the step value in the memory. • The simulated value will be incremented by a repetitive value each time the <STEP> key is pressed. 8.5.7 "Scale factor" mode The "scale factor"... -
Page 25: Digital Interface
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a Switch the instrument -OFF- and then -ON- again; if the indication persists the instrument requires a new calibration. If the fault indication persists after the calibration procedure contact our technical staff for hardware service. ! Er r o r 9 ! Indicates a not verified data writing on the EEPROM memory Un d e r... -
Page 26: Digital Output Wiring Practice
_______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a I D - Na me : Fig. 8.7.1C It can be programmed from 00 to 99 through the <UP> or <DOWN> keys. Load the set value in the memory by pressing the <2> key •... -
Page 27: Communication Protocol From Unical Ma To A Computer
10 µF, 16 V TTL to RS 232 converter The adaptor consists of a cable to which are connected a male mini connector (to the UniCal mA) and a DB 25 connector, that contains the electrical circuitry, to the Personal Computer. -
Page 28: Computer Request For Unical Settings
The above is useful to verify a correct transmission and receival. The minimum time-out of the UniCal mA is 5 seconds. 8.7.5 Computer request for UniCal settings Host UniCal mA → Tx IDNAME Rx IDNAME Proceed if name acknowledged ←... -
Page 29: Communication Programs
Connect the UniCal mA, through adapter BB530001 (TTL-RS232 converter), to personal computer communication port COM1. Set UniCal mA in mA measurement mode (IN). Run the program and you will see on the screen of the computer the actual measured value (once). - Page 30 _______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a 140 WHILE LOC (1) = 0: WEND 150 DATA 2 = ASC (INPUT$ (1, 1)) 160 PRINT #1, CHR$ (CHAR); 170 WHILE LOC (1) = 0: WEND 180 DATA 3 = ASC (INPUT$ (1, 1)) 190 PRINT #1, CHR$ (CHAR);...
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Page 31: Maintenance
Instruction Manual MM850099 ed.02a MAINTENANCE The UniCal mA portable calibrator has been factory tested and calibrated before shipment. The calibration should be verified and re-adjusted if the instrument is showing an error exceeding the declared specifications or when a critical active or passive component is replaced (either at component level or at board level) The UniCal mA portable calibrator uses sophisticated analog and digital technologies. -
Page 32: Certificates
Each instrument is shipped with a certificate of warranty that indicates the validity conditions of the warranty itself. EUROTRON warrants its products against defects in materials and workmanship for a period of 2 years from the date of original retail purchase. - Page 33 Via F.lli Casiraghi 409/413 20099 Sesto S. Giovanni (MI) - Italy (Address) declare under our sole responsability that the product : Portable indicator-calibrator type UniCal mA (Name and type) cat. 3405 (Model) to which this declaration relates is in conformity with the...
- Page 34 _______________________________________ ______________________________________ Instruction Manual MM850099 ed.02a eurotron _________________________________________ 34 ________________________________________...
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