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Voltage comparator R3003M1-2 (R 3003M1-2, R-3003M1-2)
Suitable for:
calibration of the stress;
voltage measurement;
issuance of calibrated stress;
Play stresses;
Accuracy class of 0.0005.

Voltage comparator R3003M1-2 (hereinafter - the comparators) DC accuracy class 0.0005, designed for:
calibration of the stress;
voltage measurement;
issuance of calibrated stress;
Play stresses;

In the comparator R3003M1-2 provided the modes of operation with an external digital and analog output meter. Operating conditions of the comparator:
ambient temperature - 10 ° C to 35 ° C. Relative humidity - 80% at 25 ° C, the line voltage is - (220 ± 22), at 50, 60Hz.
Voltage comparators R3003M1-2, intended for delivery to areas with a tropical climate, consistent execution 0 category 4.1, and operate at a temperature of 10 to 35 ° C. By Type code comparator added 04.1 **. "

Technical data

Voltage comparator

When calibration of measuring stress and collectively function built-in calibrator, differential instrumentation amplifier, differential Microvoltmeter, the input voltage divider.
Information about the calibration of the range (upper range) are shown in Table 1. The limits of acceptable basic error and calibration of the limits of acceptable error in the calibration of the operating conditions of application correspond to those indicated in Table 2. The limits of acceptable basic measurement error in the calibration on a normal element of precision class rank 0,001 II correspond to those indicated in Table 2.

Warm-up time of the comparator - 1 hour setup time precision mode - 4 hours comparator voltage R3003M1-2 provides normalized specifications regardless of the operating time after the establishment of the operating mode.

The differential instrumentation amplifier voltage

The parameters of the differential output instrumentation amplifier voltage (hereinafter - the amplifier) ​​correspond to those indicated in the table. 3. The limits of the amplified voltage 1mkV; 10mkV; 100mkV; 1 mV, 10mV, 100mV, 1V, 10V. Nominal values ​​of the gain, the limits of acceptable error amplifier outputs for CE and AB; limits of acceptable non-linearity of the amplifier output CV correspond to the values ​​indicated in Table. 4 and 5. The input impedance of the amplifier (Ri) is as indicated in Table 6. The output impedance of the amplifier for analog and digital output does not exceed 0.5 ohms.

Input parameters of immunity

Rejection coefficient differential AC voltage (hindrance of normal form) network frequency and dynamic range are shown in Table 6. Factor reject common-mode voltage (common mode):
for AC voltage mains frequency are shown in Table 6;
for DC voltage - not less than 120 dB.

Features duty cycle. Zero offset voltage of the amplifier is not more than 3mkV in operation for 8 hours

Differential Microvoltmeter

Measurement limits microvoltmeter: 1mkV; 10mkV; 100mkV; 1 mV; 10mV, 100mV, 1V, 10V. The limits of acceptable basic error on the upper scale indicating device and the limits of acceptable reduced error in the working conditions of application correspond to those indicated in Table 7.
Response time microvoltmeter as specified in Table 7. Microvoltmeter has:
two rows of scales indicating device;
electric equalizer to set the arrow indicating device to zero the bottom of the scale with an accuracy of ± 0,5 division;
polarity switch indicating device.

The normal position of the scale indicating device - vertical.

Voltage calibrator

Limits calibrated voltages and reproducing stresses are shown in Table. 1. The calibrator is made DIL, semidekadnym. Graduation one stage younger decades, load characteristics, the output resistance are shown in Table 8. The limits of acceptable linearity error of the set voltage calibrator (non-linearity) in normal (basic) and working conditions of application corresponds to exist the limits of admissible values ​​of the error komparirova given in Table 2.
The limits of acceptable basic error in the calibration play by the normal element of accuracy class 0.001 M discharge correspond to those indicated in the table. 2.
The nominal value of the output voltage division factors within the calibrator at 1B, 0.1 V - 10 and 100, respectively. Changing the voltage calibrator does not exceed:
caused by the duration of the inclusion:
25 • 10 -4% - TT s for 8 hours;
5 • 10 -4% - precision mode in 1 hour;
caused by a change in the ambient temperature range zozduha corresponding working conditions of use, 5 • 10 -4% / ° C;
caused by changing the supply voltage of ± 22V of nominal 2 • 10 -4%.
Changing the division factor subgroups caused by changes in ambient temperature in the range of temperatures corresponding to the working conditions of use does not exceed: 5 • 10 -5% / ° C for the range of 1V, 10 • 10 -4% / ° C for the range of 0.1 V. Noise voltage output voltage calibrator (multiplicative component) does not exceed 4 • 10 -5% / ° C (pp)
Time of establishment of the voltage calibrator must not exceed 2 at ΔU = ± (2,5 U + 1) uV
where ΔU - calibrator output voltage deviation from the set point; U - set value voltage, V.
Input voltage divider:
The nominal rate of fission - 100.
Input impedance - 1 MW, with a tolerance of ± 5%. The temperature coefficient of the division factor - not more than 23 • 10 -4% / ° C. The device is equipped with a device for offline verification and adjustment of the divisor.

General characteristics of the comparator

Current consumption from the mains voltage of 220V - no more than 70mA. The insulation between the casing and insulated from the housing of DC circuits, which can be accessed without opening the comparator R3003M1-2 stand for 1 min. test voltage of AC, 50 Hz, which corresponds to the current value:
1.5 kV - joined together between the housing and the input terminals relative to the input mains supply;
0.5 kV - between the body and the input, terminals. Insulation resistance of not less than:
August 10 ohms - between housing supply and commissioning of the network;
Oct. 10 ohms - between the input terminals and connected to the ground input power supply.
Dimensions and weight of the comparator R3003M1-2 do not exceed 488x170x385mm, 13kg.


Table 1.
Range Symbol limit in the design documentation
When and calibration of measuring DC voltage: compensation method  
11.111110 In 10B
In 1.1111110 1B
In 0.11111110 0.1
using the input voltage divider (Rin = 1M)  
In 111.1110 100B
When issuing a calibrated voltage and playback  
11.111110 In 10B
In 1.1111110 1B
In 0.11111110 0.1

Table 2.
Characterization Limits on the value of the characteristic
10B 1B 0.1 100B
Limits of error calibration of, uV        
main ± (5U +1) ± (5U +0,1) ± (6U +0,04) ± (50U +4)
the operating conditions of application ± (10U +1) ± (10U +0,1) ± (20U +0,04) -
Maximum permissible error of measurement and calibration play on a normal element of precision class 0,001 II discharge, mV, with a range of calibration:        
1 hour ± (20U +1) ± (20U +0,5) ± (30U +0,5) ± (50U +4) *
8 hours ± (40U +5) ± (40U +1) ± (50U +0,5) -
Note.         U - rated value of the measured voltage in volts.
                               * - Only for measurement error.
Table 3.
Output Rated output voltage E Rated Load The load resistance is not less than
Analog ± 10V 5mA 2K
Digital on the range of measurements:      
1mkV-1B ± 1V - 1000kOm
10B ± 10V - 1000kOm