R3015 (Р3015) R3015 (Р3015) Comparator resistors R3015
4.9 63

Resistance comparator R3015 (R 3015, R-3015)
Resistance comparator R3015 (hereinafter - comparator) is designed to determine relative difference resistance on a direct current (hereinafter - the relative difference z) of two discrete external and (or) integrated resistors, with no galvanic connection between themselves and the representation of the comparison result in percentage on the digital screen.
Comparison range 10-2Оhm-10⁷Оhm
Acceptable basic accuracy 0,1-0,0001%

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Electrical measuring instruments
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comparators

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Product information updated 01 April 2024.

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Technical characteristics

Resistance comparator R3015 (R 3015, R-3015)
Resistance comparator R3015 (hereinafter - comparator) is designed to determine relative difference resistance on a direct current (hereinafter - the relative difference z) of two discrete external and (or) integrated resistors, with no galvanic connection between themselves and the representation of the comparison result in percentage on the digital screen.
Comparison range 10-2Оhm-10⁷Оhm
Acceptable basic accuracy 0,1-0,0001%
Operating conditions:
Ambient temperature 10 to 35 °С;
Relative humidity 80% at 25 °C;
Voltage supply (220 ± 22)V;
Normal frequency (50 ± 1) Hz and (60 ± 1,2) Hz;
Distortion coefficient of voltage curve is not more than 5%;
External electric and magnetic fields, except the Earth field, not available;
Resistance comparator R3015, delivered to areas with tropical climate (comparators marked "P3015-4.1 **") should be placed in places with air-conditioned or partly air-conditioned.
 
Technical characteristic:
 
 The ranges of comparison, the value of voltage at the reference resistor Rn (URN) when comparing resistors correspond to those indicated in the Table 1. The comparator provides automatic and manual startup modes, and remote control mode (input-output data through the built-in interface) designed in compliance with the requirements of GOST 26.003-80.
The comparator provides automatic selection of the polarity and extent of the relative difference z: ± 0,01; 0,1; 1, 10, 100%. The comparator consists of two blocks: comparator (CB) and digital block (DB), connected together by two cables.
The digital display DB shows:
value of the measured relative difference z with the floating point, whose position corresponds to the limit of the relative difference according to the Table 2;
sign of the polarity of the measured relative difference z;
the letter "P" on the display digits, signals about overload in break of compared resistors circuit or a relative difference of z for more than 119.99%.
The duration of the measurement cycle for all types of starts is set automatically depending on the range of comparison in accordance with Table 3. Acceptable basic error limit of comparator for comparing resistors in all operating starts modes corresponds to the Table 1. The measured relative difference between the measured resistor z is equal to a percentage: Z = 100 ·(Rx - RN)/RN, where Rx and RN - real values ​​of resistances, of the measured and model resistors.
    Acceptable limit of comparators additional error, caused by the change in ambient temperature from normal (20 ± 2) ° C up to any in the range from 10 to 35 ° C, equal to half of the maximum permissible basic error for every 10 ° C of temperature change. Acceptable limit of additional error, caused by the change of supply voltage of ± 10% with nominal (220V), is equal to half of the maximum permissible basic error.
 The comparator has a device for introduction of the amendments to the real resistance value of resistor RN model from 0 to ± 0,0099% from its nominal value in steps of 0.0001%. The amendment should be introduced in the measurement of the relative difference of ± (0,000000 - 0,9999%).
Operating time setup mode (after switching on the network) - 30 minutes. Duration of continuous operation of the comparator without calibration and zeroing is at least 1 hour. Duration of continuous operation of the comparator is not less than 8 hours, not including time of the operating mode establishment. The time interval before re-enable is at least 30 minutes.
The resistance between any accessible metal piece and the body of any of the blocks and clamp "╧" does not exceed 0.5 ohm. Each block CB and DB has the insulation between supply chain, "220V" and a clip "╧", and between the supply chain, "220V" both blocks (blocks of CB and DB are connected with connecting cables) and the measuring circuit (short-circuited cable ends Rx and RN) in the normal conditions of use maintains during the action of 1min a test AC voltage with frequency (50 ± 1) Hz, which is in almost sinusoidal shape, with the value 1.5 kV.
The insulation resistance between the supply chain, "220V" in each block of CB and DB, and clamps "╧", and also between the supply chain, "220V" both of blocks (blocks of CB and DB are connected by connecting cables) and the measuring circuit (short-circuited cable ends Rx and RN) - at least 108 Ohm at a voltage of 100-200V in normal conditions of use. The power consumed by the comparator, not more than 110 V • A. Dimensions, mm, not more than CB: 450x25x450mm, DB 450x250x450mm. Weight of the comparator is not more than 30 kg.
 
    Table 1
Comparison range The nominal value of compared resistances The measured relative difference of z,%
10-2Ohm -10 Ohm 10-2 Ohm -10 Ohm ±(0,0000 – 0,9999)
±(1,000 – 9,999)
±(10,00 – 100,00)
3·10-2 Ohm – 102 Ohm 3·10-2 Ohm – 102 Ohm ±(0,0000 – 0,9999)
±(1,000 – 9,999)
±(10,00 – 100,00)
10-1 Ohm – 103 Ohm 10-1 Ohm – 103 Ohm ±(0,00000 – 0,09999)
±(0,1000 – 0,9999)
±(1,000 – 9,999)
±(10,00 – 10,00)
3·10-1 Ohm – 104 Ohm 3·10-1 Ohm – 103 Ohm ±(0,00000 – 0,09999)
103 Ohm – 104 Ohm
3·10-1 Ohm – 103 Ohm ±(0,1000 – 0,999999)
103 Ohm – 104 Ohm
3·10-1 Ohm – 104 Ohm 3·10-1 Ohm – 103 Ohm ±(1,000 – 9,9999)
103 Ohm – 104 Ohm
3·10-1 Ohm – 103 Ohm ±(10,00 – 100,00)
103 Ohm – 104 Ohm
1 Ohm - 104 Ohm 1 Ohm – 102 Ohm ±(0,0000 – 0,09999)
102 Ohm – 104 Ohm
1 Ohm – 102 Ohm ±(0,1000 – 0,9999)
102 Ohm – 104 Ohm
1 Ohm – 102 Ohm ±(1,000 – 9,999)
102 Ohm – 104 Ohm
1 Ohm – 102 Ohm ±(10,00 – 100,00)
102 Ohm – 104 Ohm
3 Ohm - 104 Ohm 3 Ohm – 103 Ohm ±(0,0000 – 0,09999)
103 Ohm – 104 Ohm
3 Ohm – 103 Ohm ±(0,1000 – 0,9999)
103 Ohm – 104 Ohm
3 Ohm – 103 Ohm ±(1,000 – 9,999)
103 Ohm – 104 Ohm
3 Ohm – 103 Ohm ±(10,00 – 100,00)
103 Ohm – 104 Ohm
10 Ohm - 104 Ohm 10 Ohm – 103 Ohm ±(0,0000 – 0,09999)
103 Ohm – 104 Ohm
10 Ohm – 103 Ohm ±(0,1000 – 0,9999)
103 Ohm – 104 Ohm
10 Ohm – 103 Ohm ±(1,000 – 9,999)
103 Ohm – 104 Ohm
10 Ohm – 103 Ohm ±(10,00 – 100,00)
103 Ohm – 104 Ohm
30 Ohm - 103 Ohm 30 Ohm - 103 Ohm ±(0,0000 – 0,009999)
±(0,0100 – 0,09999)
±(0,100 – 0,9999)
±(1,00 – 9,999)
±(10,00 – 100,0)
102 Ohm - 104 Ohm 102 Ohm - 104 Ohm ±(0,0000 – 0,009999)
±(0,0100 – 0,09999)
±(0,100 – 0,9999)
±(1,00 – 9,999)
±(10,00 – 100,0)
102 Ohm - 104 Ohm 102 Ohm - 104 Ohm ±(0,0000 – 0,009999)
±(0,0100 – 0,09999)
±(0,100 – 0,9999)
±(1,00 – 9,999)
±(10,00 – 100,0)
102 Ohm - 105 Ohm 102 Ohm - 104 Ohm ±(0,0000 – 0,009999)
104 Ohm – 105 Ohm
102 Ohm - 104 Ohm ±(0,0100 – 0,09999)
104 Ohm – 105 Ohm
102 Ohm - 104 Ohm ±(0,100 – 0,9999)
104 Ohm – 105 Ohm
102 Ohm - 104 Ohm ±(1,00 – 9,999)
104 Ohm – 105 Ohm
102 Ohm - 104 Ohm ±(10,00 – 100,0)
104 Ohm – 105 Ohm
103 Ohm – 106 Ohm 103 Ohm – 104 Ohm ±(0,0000 – 0,009999)
104 Ohm – 105 Ohm
105 Ohm – 106 Ohm
103 Ohm – 104 Ohm

 

±(0,100 – 0,9999)
104 Ohm – 105 Ohm
105 Ohm – 106 Ohm
103 Ohm – 105 Ohm ±(1,00 – 9,999)
105 Ohm – 106 Ohm
103 Ohm – 105 Ohm ±(10,00 – 100,0)
105 Ohm – 106 Ohm
106 Ohm – 107 Ohm 106 Ohm – 107 Ohm ±(0,0000 – 0,9999)
±(1,00 – 9,999)
±(10,00 – 100,0)
 
Comparison range  Voltage on the single reference resistor RN,V

Maximum permissible basic error

 (Δz + δк·z), %
10-2Ohm -10 Ohm 0,01± 0,00003 ± 0,01
0,001 ± 0,00002 ± 0,1
± (0,1+0,005·z)
3·10-2 Ohm – 102 Ohm 0,03 ± 0,0001 ± 0,005
0,003 ± 0,00002 ± (0,05+0,003·z)
10-1 Ohm – 103 Ohm 0,095 ± 0,0002 ± (0,003)
± (0,003+0,001·z)
0,0095 ± 0,00002 ± (0,015+0,001·z)
± (0,003+0,001·z)
3·10-1 Ohm – 104 Ohm 0,16 ± 0,0008 ±0,001
±0,003
± (0,01+0,0005·z)
± (0,003+0,0005·z)
3·10-1 Ohm – 104 Ohm 0,016±0,00008 ± (0,005+0,001·z)
± (0,015+0,001·z)
± (0,03+0,001·z)
1 Ohm - 104 Ohm 0,3± 0,0009 ± (0,0005+0,0005·z)
± (0,002+0,0005·z)
± (0,0005+0,0005·z)
± (0,002+0,0005·z)
0,03± 0,0001 ± (0,003+0,001·z)
± (0,01+0,001·z)
± (0,03+0,001·z)
± (0,02+0,001·z)
3 Ohm - 104 Ohm 0,52±0,001 ± (0,0003+0,0005·z)
± (0,003+0,0005·z)
± (0,0005+0,0005·z)
± (0,003+0,0005·z)
0,052±0,00012 ± (0,002+0,001·z)
± (0,015+0,001·z)
± (0,02+0,001·z)
10 Ohm - 104 Ohm 0,95±0,0016 ±0,00025
±(0,002+0,0005·z)
±(0,00025+0,0005·z)
0,095±0,0002 ±(0,001+0,0005·z)
±(0,015+0,001·z)
±(0,02+0,001·z)
30 Ohm - 103 Ohm 1,6±0,008 ±0,0001
±(0,0001+0,0005·z)
±(0,0003+0,0005·z)
0,16±0,0008 ±(0,002+0,0005·z)
±(0,02+0,001·z)
102 Ohm - 104 Ohm 3,0±0,01 ±0,0001
±(0,0001+0,0005·z)
±(0,0003+0,0005·z)
0,3±0,0009 ±(0,002+0,0005·z)
±(0,02+0,001·z)
102 Ohm - 104 Ohm 5,2±0,012 ±0,0001
±(0,0001+0,0005·z)
±(0,0003+0,0005·z)
0,52±0,0011 ±(0,002+0,0005·z)
±(0,02+0,001·z)
102 Ohm - 105 Ohm 9,5±0,020 ±0,0001
±0,0002
±(0,0001+0,0005·z)
±(0,00025+0,0005·z)
±(0,0003+0,0005·z)
±(0,00045+0,0005·z)
0,95±0,0016 ±(0,002+0,001·z)
±(0,02+0,002·z)
103 Ohm – 106 Ohm 16,0±0,08 ±(0,0001+0,0005·z)
±[(0,0001+10-9·RN)+0,0005·z]
±[(0,0001+10-9·RN)+(2,5· 10-10·RN +0,0005)·z]
±(0,0003+0,0005·z)
±[(0,0003+10-9·RN)+0,0005·z]
±[(0,0003+10-9·RN)+(2,5· 10-10·RN +0,0005)·z]
1,6±0,08 ±(0,002+0,001·z)
±[(0,002+5·10-9·RN)+(2,5· 10-10·RN +0,0001)·z]
±(0,02+0,001·z)
±[(0,02+5·10-9·RN)+(2,5· 10-10·RN +0,001)·z]
106 Ohm – 107 Ohm 20,0±0,09 ±[(0,0001+10-9·RN)+(2,5· 10-10·RN +0,0005)·z]
2,0±0,009 ±[(0,002+5·10-9·RN)+(2,5· 10-10·RN +0,001)·z]
±[(0,02+5·10-9·RN)+(2,5· 10-10·RN +0,001)·z]

 

Note: Δz – Comaparators error same nominal resistance (hereinafter - the coefficient Δz); δk - transformation factor error (hereinafter - the coefficient δk).  
 
   Table 2.
Measured relative difference z,% 
 The limit of the relative difference z,%
from 0,00000 to 0,009999 0,01
from 0,01000 to 0,09999 0,1
from 0,10000 to 0,9999 1
from 1,00000 to 9,999 10
from 10,0000 to 100,00 100
 
   Table 3.
Comparison range, Ohm 10-2 Ohm -10 Ohm;
3·10-2Ohm - 102 Ohm; 106 Ohm - 107 Ohm
  10-1 Ohm – 103 Ohm;
 3·10-1 Ohm – 104 Ohm;
    102 Ohm – 105 Ohm;
103 Ohm – 105 Ohm
 1 Ohm – 104 Ohm;
102 Ohm – 104 Ohm;
3Ohm – 104 Ohm;
102 Ohm – 104 Ohm;  
10 Ohm – 104 Ohm;
30 Ohm – 103 Ohm
Time of measuring cycle, sec 12±1 8±1 4±1
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* rating and all product statistics are updated once a month; information is current as of 17 April 2024

Photos: R3015 (Р3015)

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R3015 (Р3015) bottom view.

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