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XITRON 2000I, Руководство пользователя

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Страница 1: ...USER GUIDE 2000I 2000M DC Power Source Instruments...

Страница 2: ......

Страница 3: ...the instrument is defective as a result of misuse improper repair or abnormal conditions or operations repairs will be billed at cost Xitron Technologies assumes no responsibility for its product bei...

Страница 4: ...e The product displays and instructional text may be used or copied only in accordance with the terms of the license agreement is a trademark of Xitron Technologies All other trademarks or registered...

Страница 5: ...______________________________________ 14 Numeric Keys ___________________________________________ 14 Key ________________________________________________ 15 Arrow Keys________________________________...

Страница 6: ...______________ 30 Direct Entry of Temperature Data ___________________________ 31 Reversing Polarity of the Present Output Level _________________ 31 Adjusting Output Level or Simulated Temperature __...

Страница 7: ...iodic Maintenance___________________________________ 72 Internal Maintenance ___________________________________ 72 Replacing the Internal Battery ____________________________ 74 Interface Operation _...

Страница 8: ...Appendix A Output Specifications _____________________ 87 DC Voltage Output Specifications_________________________ 87 DC Current Output Specifications _________________________ 88 Voltage Measuremen...

Страница 9: ...nd Characters______________________________ 82 Table 5 Shortcuts to Command Character Sequences ___________ 82 Table 6 Extended Command Set ___________________________ 83 Table 7 DC Voltage Output ___...

Страница 10: ...10 2000I 2000M User Guide Rev B...

Страница 11: ...mocouple outputs On a 2000 instrument you may enter a scaling factor an offset factor and a units text string which enables the calibration of four 20mA loops in the actual units and scaling of the tr...

Страница 12: ...1 0 2 degree accuracy Auto cold junction compensation Battery or line operation Suited for in field calibration requirements of the process control industry Portable for use in remote sites Functions...

Страница 13: ...perform specific tasks refer to Front Panel Operation Display The 2000 DC power source instrument display is a 16 char acter single line reflective liquid crystal LCD This display shows selectable st...

Страница 14: ...uminates when the internal battery is being charged Upon full charge this light extinguishes Green OK Light This green light LED illuminates when the power switch is turned on Note To continue using i...

Страница 15: ...key has a4 right arrow These keys are used to select the next action 8 key has an 5 up arrow To abort the selection of an activity and return the instrument to its previous condition press the MNU ke...

Страница 16: ...he displayed units of the measured data CLR Key This key is used to reinitiate a numeric entry i e clear the display ready for restarting the entry or during a choice selection this key aborts the act...

Страница 17: ...sage of this connector Important Note When connecting a charger other than that provided by Xitron Technologies ensure the selected charger s output voltage is 12V at 1 5A and the center conductor is...

Страница 18: ...escribed in the Interface Operations chapter RS BAT Connector This is a female 9 pin sub miniature D type connector and contains the RS232 connections for the RS BAT option of the instrument The conne...

Страница 19: ...the internal interface is enabled for operation and is disabled when OFF down position Note that the battery life is considerably shortened when the IE BAT Interface is enabled thus it is highly reco...

Страница 20: ...20 2000I 2000M User Guide Rev B...

Страница 21: ...e the battery may discharge We recommend the battery be recharged for at least 12 hours prior to its initial use Use the charging unit provided by Xitron Technologies to charge the internal battery an...

Страница 22: ...g Module is in accordance with the local AC supply voltage Note For the fastest possible recharging time place the front panel POWER switch in the OFF position While charging the internal battery the...

Страница 23: ...ly diagrams fault diagnosis aids and full servicing information If not included at the time of placing the order for the basic unit please have the serial number of your unit available when making thi...

Страница 24: ...y e g an automobile battery This latter method for recharging the internal battery in the instrument yields the useful feature of allowing you to recharge the instrument from an automobile e g the cig...

Страница 25: ...l measurement and calibration Note that recall of steps is covered in the Using the Memory Options chapter and calibration is covered in Calibration and Maintenance Additional 2000 instrument uses are...

Страница 26: ...low Notes 1 The terminals are automatically configured as input terminals when the 2000M instrument is set to the Measure mode 2 In cold junction compensation mode CJC the output connectors are wired...

Страница 27: ...Use Passive CJ Active CJC Selecting Operate or Standby In Standby mode the2000 instrument internally open circuits its output terminals This ensures you and the instrument itself are safe from current...

Страница 28: ...e display and the remaining portions of the display will be blank The cursor will automatically move to under next possible character entry point showing the position into which the next key press wil...

Страница 29: ...in in the correct position to override the previous entry The previous sequence for numeric entry is generally used throughout all entry sequences Where specific differences exist refer to the followi...

Страница 30: ...data pressing the key before pressing any numeric keys causes the present output level to reverse its polarity Caution For voltage outputs always specify value in millivolts to prevent damage to equip...

Страница 31: ...lay format is fixed And although the multiplier may be used numerically during the entry the display format is unaffected For example If 120m C is entered then a temperature of 0 12 C will be selected...

Страница 32: ...up or down the hot junction simulation temperature Use this Adjust mode to perform calibration of an external unit of equipment During a calibration procedure the 2000 instrument will display each mod...

Страница 33: ...he displayed deviation shows the amount the item being calibrated is in error Specifically it shows the opposite polarity to the amount the output level was deviated thus the nominal value is the addi...

Страница 34: ...e is adjusted by the value of the flashing digit in the display This can be adjusted within the constraints of the displayed value by pressing the 43 left arrow key which moves the adjustment digit to...

Страница 35: ...n The display then prompts to select whether the instrument is to assume the Operate or Standby state following power on the display shows Select Standby If the Operate mode is required then press any...

Страница 36: ...d ranges 20V 2V and 20mA will appear in sequence With the desired range on the display pressing any one of the Units Enter keys will lock the instrument in the shown range Unlocking the ranges can be...

Страница 37: ...2 Since neither Standby nor Operate are desired press an arrow key until the Calculated Output action is displayed Calculated 3 Then press any of the Units Enter keys V A C or F to select this action...

Страница 38: ...ed data Press any units key if this data is to be retained or enter the desired data followed by any units key Note that the units for this data are automatically those previously selected for the Out...

Страница 39: ...ressing any of the Units Enter keys V A C or F without prior numeric entry This action will deselect the Calculated Output mode of operation and leave the output level and type unaffected The display...

Страница 40: ...in the Operate state then disconnect the voltage or thermocouple previously being measured 2 Repetitively press any of the arrow keys until the Output prompt is displayed 3 Press any of the Units Ente...

Страница 41: ...transmit the command string J1 to the instrument while passive mode is selected by the J0 string When changing from the active to the passive mode the previously used passive mode reference temperatu...

Страница 42: ...ement Set Up 1 Press the MNU key and the display will prompt you to select either the Standby or Operate state 3 Neither Standby nor Operate are desired actions therefore continue to press any of the...

Страница 43: ...f this junction goes above the ambient temperature or the present ambient temperature may be entered as the reference temperature In this case the entered hot junction temperature will be absolute tem...

Страница 44: ...44 2000I 2000M User Guide Rev B...

Страница 45: ...rganization The memory steps are numbered in order from 0 to 9 inclusive Each of the 10 programmable memory steps may contain the following data Whether the step is Active or Inactive If a step is fla...

Страница 46: ...may be toggled by pressing any of the arrow keys or the MNU key When the desired status is shown press any of the ENTER keys to select If the Inactive state was selected the display will return to the...

Страница 47: ...been recalled from a memory step the step number is displayed in the right hand end of the display except when the output level is being adjusted You may select the next higher numbered Active memory...

Страница 48: ...nts of a memory step may be edited at any time if the memory step being edited is presently in use then note that the present output level will be updated when the memory step is next recalled Adjusti...

Страница 49: ...r standards of various values and Provide reference sources in instrumentation circuits The 2000M rear panel connector is used to Simulate thermocouple systems and Measure thermocouple output Low leve...

Страница 50: ...le 26 AWG or smaller to reduce thermal mass The temperature of the thinner wire easily matches the terminal This wire additionally reduces the effect of drafts due to the reduction of thermal shunting...

Страница 51: ...ble Current Connections The considerations for low level DC currents are similar to those for voltages but thermal E M F voltages and lead resistances have no effect on performance The primary effects...

Страница 52: ...ated wiring and maintain an air gap between wires However this method may cause excessive interference problems if the cables are long or the environment is particularly adverse Route connecting cable...

Страница 53: ...Industry Applications The 2000 instruments can be used in the process control industry For calibration and maintenance applications Wherever an accurate source of DC voltage or current is required As...

Страница 54: ...a 1 5V transducer output to modify the transducer s indicated output Adjusting Calibration of Multiple Units The drive capabilities of the 2000 instruments are sufficient to adjust the calibration of...

Страница 55: ...sed by the 2000 instruments to compute the output level from entered data while operating in this mode is Output level scale factor entered data offset factor The instruments automatically calculate s...

Страница 56: ...ecting line powered current measuring equipment in series check for excessive leakage current flowing from an input terminal to ground Current leakage does not affect the measurement when a single uni...

Страница 57: ...rect thermocouple wire verify polarity The instrument will automatically measure and compensate for any ambient temperature at the actual junction between the connecting thermocouple and the CJC 80 BA...

Страница 58: ...ment is set to a suitable current for the resistance to transfer a 10V drop across the resistor A high accuracy digital voltmeter is used to measure the voltage drop across the standard On the same th...

Страница 59: ...6 5ppm 7 6ppm 10k 1k 1mA 6 1ppm 8 1ppm 10k 10k 1mA 6 0ppm 7 1ppm 100k 10k 100 A 7 5ppm 9 5ppm 100k 100k 100 A 6 5ppm 7 6ppm 1m 100k 10 A 20ppm 22ppm 1m 1m 10 A 10ppm 11 1ppm 10m 1m 1 A 137ppm 139ppm...

Страница 60: ...are able to float up to 500V from ground potential without danger and with almost no DC or AC leakage to ground or line 3 Testing circuitry controlled by DC voltages or currents The 2000 instruments...

Страница 61: ...e ambient temperature has changed by more than 5 C If the instrument is in use as a transfer standard between sites perform the internal calibration at both sites This sequence performs an operational...

Страница 62: ...the message continuously displays and the sequence is suspended at that stage External Calibration The 2000 instruments require periodic calibration e g physical adjustment against external calibratio...

Страница 63: ...Solartron 7081 or Datron 1281 Digital Multimeters if recently calibrated at these levels Note The accuracy required at a zero input level may be achieved by using the short term stability of the measu...

Страница 64: ...trument Any zero offsets in the measuring system can be compensated for by calibrating the zero current of the system using an open circuit measurement Initiating External Calibration To initiate an e...

Страница 65: ...If the incorrect password is entered the display will abort after flashing Wrong Note To abort the external calibration selection at any time press the CLR key You will return the instrument to the ou...

Страница 66: ...erforming External Calibration The instrument automatically selects the next output level and selects the Adjust mode of operation with the least significant digit as the adjustment digit Front Panel...

Страница 67: ...e output level of the 2000 instrument to within 0 2 V of 10mV as described in step 2 This output level may be measured directly by using A high precision DMM or A nullmeter to monitor the deviation be...

Страница 68: ...to monitor the deviation between this instrument s output level and the output of a high precision 100 1 attenuator whose input is obtained from a precision calibrated 10V source 11 Calibrate to an ou...

Страница 69: ...ion calibrated 10V source 13 Calibrate to an output level of 10 00000V Adjust the output level of the 2000 instrument to within 60 V of 10V as described in step 2 This output level may be measured dir...

Страница 70: ...s output level may be measured directly by using A calibration standard 10k resistor and a high precision DMM or A nullmeter to monitor the voltage drop across the standard resistor 17 Calibrate to an...

Страница 71: ...xact resistance of 1k i e a current of 1mA 15nA This output level may be measured directly by using a calibration standard 1k resistor and a high precision DMM to monitor the voltage drop across the s...

Страница 72: ...ean the external surfaces of the chassis with a soft damp cloth Do not clean the front panel with Freon based cleaning solutions Take care that moisture does not enter the chassis during cleaning If t...

Страница 73: ...o cross head screws holding the top of the two halves of the outer chassis covers 4 Carefully remove both halves of the outer chassis covers by pulling them horizontally out and away from the internal...

Страница 74: ...ment battery from Xitron Technologies Warnings 1 Sealed lead acid batteries are normally stored in a charged condition take extreme care when handling the battery 2 Always handle and dispose of Sealed...

Страница 75: ...powered by the battery use extreme care in handling them Reconnect the battery cables after reattachment of the boards 5 Following complete reassembly fully charge the replaced battery in accordance w...

Страница 76: ...76 2000I 2000M User Guide Rev B...

Страница 77: ...is completely disabled when the rear panel s INTERFACE ENABLE toggle switch is OFF or when a front panel operation such as baud rate or address selection is not initiated Note Throughout this section...

Страница 78: ...r local states thus the instrument will respond to commands from either the front panel or the interface as applicable RS232 Handshake Lines The RS BAT interface is configured to use the RS232 hardwar...

Страница 79: ...ressing the MNU key on the front panel The last menu selection press either the MNU key or any of the arrow keys until this selection is displayed will be the prompt to change the IEEE488 address if t...

Страница 80: ...al equivalence of 1 is set if the 2000 has completed actioning the previously received command string 4 Interface Clear capabilities The IEEE488 standard defines this command which causes the interfac...

Страница 81: ...strument in the REMOTE state when using the IE BAT interface Characters transmitted to the interface are stored in a buffer until a line feed character is received or until a character with the EOI li...

Страница 82: ...he EOI line asserted in which case the display will show the progress of the command that is being built in this manner Table 5 Shortcuts to Command Character Sequences Char Seq Description of Action...

Страница 83: ...e Version F 02 The Firmware Version F 02 update to the 2000I and 2000M DC power source instrument models include all the standard capabilities including Range Lock mode the ITS 90 Thermocouple tempera...

Страница 84: ...portion of this string deselects the Calculated mode to ensure that the instrument is in the Operate mode Voltages of 10 23mV and 3 456 V are similarly commanded by the strings K0 l0 23mVO and K00 3...

Страница 85: ...commands respectively thus selecting the required digit and incrementing or decrementing it as desired Reading Present Output Level In each example shown below the actual output character string is fo...

Страница 86: ...ibration External Calibration You may command an external calibration whenever desired Remotely command an external calibration via either interface by sending the command string X To prevent unauthor...

Страница 87: ...figures are for constant load and temperature within 1 C and are measured using a DC to 2Hz bandwidth The accuracy figures are relative to calibration standards Add 3ppm 1 V to the voltage figures fo...

Страница 88: ...C The 24 hour stability figures are for constant load and temperature within 1 C and are measured using a DC to 2Hz bandwidth The accuracy figures are relative to calibration standards Add 15ppm 20pA...

Страница 89: ...measure voltage access the instrument s Measurement mode In Voltage Measurement mode 0 15 to 0 15V A 90 day absolute accuracy is 0 01 1 V 3ppm 1 V throughout the temperature range A 1 year absolute a...

Страница 90: ...70 C 70 to 1000 C J 0 01 C 0 01 C 0 02 C 0 01 C 210 to 140 C 140 to 760 C K 0 01 C 0 01 C 140 to 1372 C N 0 01 C 0 03 C 200 to 1300 C R S 0 01 C 0 01 C 0 06 C 0 03 C 0 to 200 C 200 to 1768 C T 0 01 C...

Страница 91: ...01 0 03 0 04 0 10 0 12 0 06 0 13 0 19 0 20 0 27 E 230 to 1000 0 01 0 02 0 03 0 07 0 09 0 06 0 12 0 18 0 17 0 24 J 210 to 760 0 02 0 02 0 05 0 07 0 10 0 07 0 12 0 20 0 17 0 25 140 to 800 0 01 0 02 0 0...

Страница 92: ...00 0 02 0 13 0 14 0 18 0 20 0 07 0 23 0 29 0 28 0 35 J 210 to 760 0 03 0 10 0 13 0 15 0 19 0 08 0 20 0 28 0 25 0 34 140 to 300 0 02 0 06 0 07 0 10 0 12 0 07 0 16 0 22 0 20 0 27 300 to 800 0 02 0 11 0...

Страница 93: ...after full charge conditions RS232 interface enabled Battery Charge Time 12 hours max to full charge conditions unit OFF 15 hours max to full charge conditions unit ON interface disabled Charging Mod...

Страница 94: ...tery For readings involving temperature warm up time is 30 minutes Environmental Operating Temperature 0 C to 50 C Storage Temperature 30 C to 63 C Humidity 70 RH max at 40 C non condensing Isolation...

Страница 95: ...sword for enabling External Calibration is 10288 Place instrument in a known state such as current or voltage before entering the password Note that this page can be removed as required to protect thi...

Страница 96: ...2000I 2000M Instrument s User Guide Revision B 96...

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