Made in: 2016
Store resistance R4831 (R 4831, R-4831, p4831, p 4831, p-4831)
Designed to operate in DC as multivalued measures electrical resistance (MMES), as well as transition Two decade measure electrical resistance (MES Two decade) for measuring the resistance by substitution.
Display range as a measure of electrical resistance of 0.021 Ohm-111111, 1 Ohm
Rated power 0,001 W for decades 0.01 ohm, 0.01 W for the decade of 0.1 ohm, 0.05 W for decades 1 ohm or higher.
Accuracy class 0.02
Store resistance R4831 (hereinafter - Stores) intended for use in DC circuits as multivalued measure electric resistance (MMES), as well as transition Two decade measure electrical resistance (MES Two decade) for measuring the resistance by substitution.
Standard conditions for use store:
ambient temperature (20 ± 2) ° C;
relative humidity 25 to 80%;
atmospheric pressure (84-106.7) kPa [(630-800) mm Hg];
working - any.
Operating conditions store:
ambient temperature (20 ± 5) ° C;
relative humidity from 25 to 80% in the working temperature range;
atmospheric pressure (84 - 106.7) kPa [(630-800) mm Hg];
working - any.
Accuracy class store R4831 when used as MMES 0.02/2.10-6. Store error when used as MEA Two decade depends on the accuracy of resistance coils used model, application conditions and the measurement time.
The range of indications for the use of the store as MMES R4831 - from the initial 111,111.10 0.021 ohm to 0.01 ohm ohm steps through the range of indications for the use of the store as MEA Two decade:
Limit of acceptable deviation (δ n) the actual value of the resistance of the nominal value,%, calculated using the formula:
R K - the highest resistance value store, Ohm,
R - the nominal value of a resistor in ohms.
The deviation of the actual value of the nominal impedance for initial verification (when it is shipped from the manufacturer) does not exceed the value calculated by the formula (1) in the normal conditions of use, the steady-state thermal equilibrium and the power dissipation is not above par, the nominal current of the store when the R4831 decades "X0, the 1st" and "X0 01Om" no more than 0.3 A.
Maximum permissible error of δ as a percentage of the fiducial value within one year from the date of verification after production corresponds to the value calculated by the formula (1). Maximum permissible error vtechenii any year of operation (after the first year) corresponds to the set tolerances.
The limit of additional error caused by changes in ambient temperature (temperature) between the upper (lower) limit the range of normal conditions of use and by some point in the related field of application of the operating temperature corresponding to the maximum change in resistance corresponds to the value given to formula (1).
The limit of additional error R4831 store as a percentage of the nominal value when the power dissipation of the face to any value that does not exceed the maximum capacity under normal conditions of use and steady-state thermal equilibrium does not exceed the value determined by the formula (1).
Rated power dissipation is one step, 0.001 W for decades 0.01 ohm, 0.01 W for the decade of 0.1 ohm, 0.05 W for decades 1 ohm or higher.
Maximum power dissipation is one step: 0,003 W for decades 0.01 ohm, 0.03 W for the decade of 0.1 Ohm, 0.1 W for the 1st decade or more. The relative error in the store (δm) in percent using it as a Two decade MES is defined as:
The average value of the initial resistance (R 0) Shop R4831 (ie the resistance during the installation of decade switches shop on zero evidence) does not exceed 0,021 ohms. The variation of initial resistance (ΔR 0) store, due to the change of the contact resistances of contacts switching devices does not exceed 0.0021 ohms. The insulation resistance (Riso) between the body and isolated dc circuits in the shop working conditions applying at least 5.10 9 ohms. Insulation between the body and insulated from the housing dc circuits R4831 store in the working conditions of application stand for 1 minute test voltage of 2 kV AC 50 Hz.
Overall dimensions do not exceed R4831 store 370h220h190 mm. Mass magazine, kg, not more than unpacked - 5, in a shipping container - 20. The total content of non-ferrous metal product, kg
aluminum D16A - 0,175;
copper and copper-based alloys pas:
copper wire MM - 0.112;
Brophy bronze. 6,5-0,15 - 0,195;
brass L63 - 1.00;
brass LS59-1 - 0.56.