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Copyright HT ITALIA 2014

Release EN 2.01 - 13/03/2014

ENGLISH

User manual

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Summary of Contents for T2000

Page 1: ... Copyright HT ITALIA 2014 Release EN 2 01 13 03 2014 ENGLISH User manual ...

Page 2: ...sed of a single rod 12 4 5 4 HOLD 15 4 5 5 MEM 15 4 5 6 Anomalous situations 15 4 6 Current measurement T2000 16 4 6 1 HOLD 16 4 6 2 MEM 17 4 6 3 Anomalous situations 17 4 7 Leakage current measurement T2000 18 4 7 1 HOLD 18 4 7 2 MEM 19 4 7 3 Anomalous situations 19 4 8 Managing the memory 20 4 8 1 Storage of data in the memory 20 4 8 2 Recalling the results stored in the instrument s memory 20 4...

Page 3: ... instrument its components and create dangerous situations for the operator High voltage danger electrical shock hazard Double insulated meter Connection to earth 1 1 PRELIMINARY INSTRUCTIONS This instrument has been designed for use in environments of pollution degree 2 The instrument can be used for Resistance measurements T2000 and T2100 and AC current measurements T2000 on installations with o...

Page 4: ... OF MEASUREMENT OVERVOLTAGE CATEGORY Standard IEC EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements defines what measurement category commonly called overvoltage category is 6 7 4 Measured circuits reads Circuits are divided into the following measurement categories Measurement category IV is for measurements performed at ...

Page 5: ... TRMS value of the quantity being tested With a perfectly sinusoidal wave the two families of instruments provide identical results With distorted waves instead the readings shall differ Average value meters provide the RMS value of the sole fundamental wave TRSM meters instead provide the RMS value of the whole wave including harmonics within the instrument s bandwidth Therefore by measuring the ...

Page 6: ...ent In case of discrepancy please contact the dealer In case the instrument should be returned please follow the instructions given in 7 3 2 INSTRUMENT POWER SUPPLY The instrument is supplied by alkaline batteries see 6 2 2 When the batteries are flat the flat battery symbol appears on the display Replace insert the batteries by following the instructions given in 5 2 3 3 CALIBRATION The instrumen...

Page 7: ...ode A selecting the current measuring mode T2000 RECALL recalling the data stored in the instrument s memory RS232 communication with a MASTER instrument T2100 ESC exiting the HOLD function if activated or the setting mode of the alarm thresholds SET LIM 2 MEM saving data in the memory CLEAR LAST deleting the last result saved in the memory increasing the number of memory locations when displaying...

Page 8: ...4 before the indication CAL3 of the countdown is displayed the clamp is opened After the clamp is closed the calibration process starts once again automatically from the beginning This symbol is shown when battery voltage drops under 5 3V In this case measurement accuracy is not granted and batteries must be replaced This symbol indicates overload conditions during resistance measurement This symb...

Page 9: ...e Fig 2 central part Carries out the calibration process showing a countdown which starts from CAL 5 and comes down to CAL 0 see Fig 2 right side Fig 2 Sequence of screens upon switching on the instrument 2 If during the instrument s calibration process the clamp is opened before the indication CAL3 of the countdown is displayed the screen in Fig 3 appears After the clamp is closed the calibration...

Page 10: ...he instrument is based is the resistive loop resistance measurement as shown in Fig 6 Measurement of loop resistance Fig 6 Measurement of loop resistance The inner part of the instrument is made of 2 jaws one for current and one for voltage The voltage jaws generate a potential E on the loop during resistance R measurement A current I is consequently generated on the loop and is measured by the cu...

Page 11: ...rument is ready to carry out measurements 3 Open the jaws the display will show the screen in Fig 7 and clamp the test loop provided as accessory see Fig 8 Fig 7 Fig 8 Resistance measurement of test loop 4 Check that the test resistance value is equal to 5 1 A value measured by the instrument showing a difference of 0 1 with respect to the rated value is acceptable a display of 5 0 or 5 2 ...

Page 12: ...on to a multiple rod system The instrument provides the sum R R1 R0 as measured value 1 in which R1 resistance of the object under test R0 R2 R3 R4 resistance equal to parallel among resistances R2 R3 R4 CAUTION The relationship 1 is to be considered valid only provided that it is possible to neglect the effect of mutual influence among the rods connected in parallel i e with rods placed at a suff...

Page 13: ...stance an auxiliary rod is to be associated having RB resistance and optimal features in terms of earthing e g metal pipe reinforced concrete building etc These rods must be connected from a conductor with an appropriate cross section in order to make RL negligible Fig 10 Assessment of rod resistance based on two point method Under these conditions the resistance measured by the instrument is R RA...

Page 14: ...uilding etc whose value can be compared to the value of RA As a first measurement see Fig 11 connect the RA rod to the RB rod and use the instrument to measure the value of resistance R1 Fig 11 Three point method first test R1 As a second measurement see Fig 12 connect the RB rod to the RC rod and use the instrument to measure the value of resistance R2 Fig 12 Three point method second test R2 As ...

Page 15: ...ationships 3 4 and 5 are to be considered valid only provided that it is possible to neglect the effect of mutual influence among the rods connected in series i e with rods placed at a sufficient distance between them equal to at least 5 times the length of a single rod or 5 times the maximum system diagonal so that they do not influence each other The result of the relationships 3 4 and 5 is RA R...

Page 16: ...of the location in which this datum has been saved For managing data in the memory see 4 8 Fig 15 4 5 6 Anomalous situations While measuring the indication OL means that the resistance measured exceeds the maximum value which can be measured by the instrument see Fig 16 Fig 16 While measuring the symbol means that the resistance measured is lower than the minimum limit for which the accuracy state...

Page 17: ...essage OL as it automatically sets for resistance measurement Shortly press the multifunction key 1 to enter current measuring mode The screen in Fig 21 is displayed 3 Open the jaws and clamp the cable to be measured see Fig 20 then read the displayed result Fig 21 4 6 1 HOLD Shortly pressing the multifunction key 3 activates the HOLD function and freezes the result on the display see Fig 22 To go...

Page 18: ...nd the number of the location in which this datum has been saved For managing data in the memory see 4 8 Fig 23 4 6 3 Anomalous situations While measuring the indication OL A means that the current measured exceeds the maximum value which can be measured by the instrument see Fig 24 Fig 24 While measuring the symbol means that the current measured exceeds the maximum limit set see Fig 25 For manag...

Page 19: ...lly sets for resistance measurement Shortly press the multifunction key 1 to enter current measuring mode The screen in Fig 27 is displayed Fig 27 3 Open the jaws and clamp the conductors corresponding to Phase and Neutral of the single phase system or the earth conductor then read the displayed result 4 7 1 HOLD Shortly pressing the multifunction key 3 activates the HOLD function and freezes the ...

Page 20: ...he location in which this datum has been saved For managing data in the memory see 4 8 Fig 29 4 7 3 Anomalous situations While measuring the indication OL A means that the current measured exceeds the maximum value which can be measured by the instrument see Fig 30 Fig 30 While measuring the symbol means that the current measured exceeds the maximum limit set see For managing the alarm thresholds ...

Page 21: ...rrent Fig 33 4 8 2 Recalling the results stored in the instrument s memory 1 Press and hold the multifunction key 1 for more than 2 seconds to switch on the instrument 2 Shortly press the multifunction key 1 repeatedly until accessing the memory area RECALL function The instrument displays the last datum saved in the memory and symbols see Fig 34 T2000 only Fig 34 Examples of recalling data in the...

Page 22: ...function key 1 repeatedly until accessing the memory area RECALL function The instrument displays the last datum saved in the memory and symbols see Fig 34 3 Press and hold the multifunction key 2 for more than 2 seconds CLEAR LAST function to delete the last datum saved in the memory The screen in Fig 37 will appear with CLr flashing to confirm data deletion shortly press the multifunction key 2 ...

Page 23: ...stance or current measurement one of the following screens will be displayed T2000 only Fig 39 Setting of alarm thresholds for resistance and current measurement 3 Shortly press the multifunction keys 2 function or 3 function to respectively increase or decrease the limit value of the alarm threshold The limit values which can be set are Resistance from 1Ω to 999Ω Current from 1mA to 999mA T2000 4...

Page 24: ...in real time of the measured value to the MASTER instrument Transmission to the MASTER instrument of all the measured values contained in the memory Procedure 1 Press and hold the multifunction key 1 for more than 2s to switch on the instrument 2 Press the multifunction key 1 until you see the symbol 3 Connect the clamp to the MASTER instrument with the cable 4 Follow the instructions contained in...

Page 25: ...ies CAUTION Only expert and trained technicians should perform this operation Before carrying out this operation make sure you have disconnected all cables from the input terminals 1 Switch off the instrument using the ON OFF key 2 Remove the battery compartment cover by loosening the relevant screw 3 Remove all batteries and replace them with the same number of batteries of the same type see 6 2 ...

Page 26: ...to the reference conditions Resistance Range Resolution Accuracy 0 010 0 099 0 001 1 rdg 0 01 0 10 0 99 0 01 1 0 49 9 0 1 1 5 rdg 0 1 50 0 99 5 0 5 2 rdg 0 5 100 199 1 3 rdg 1 200 395 5 6 rdg 5 400 590 10 10 rdg 10 600 1000 20 20 rdg 20 If measured resistance is 1000 the display shows OL Resistance measuring frequency 1kHz Measuring range of resistance alarm threshold setting 1 999 TRMS AC Current...

Page 27: ...onsumption 50mA Auto power OFF after 5 minutes of idleness Display Characteristics 4 LCD decimal sign and point and backlight Sampling rate 1 measurement per second Memory Memory capacity 99 locations Serial communication T2100 only RS232 interface half duplex baud rate 4800 6 3 ENVIRONMENT 6 3 1 Environmental conditions for use Reference temperature 20 C 3 C 68 F 37 F Operating temperature 0 C 40...

Page 28: ...airs which may become necessary as a consequence of interventions performed by unauthorized personnel Modifications to the instrument performed without the manufacturer s explicit authorization Use not provided for in the instrument s specifications or in the instruction manual The content of this manual cannot be reproduced in any form without the manufacturer s authorization Our products are pat...

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