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R4833 (P4833)

35 699 RUB
9 999 UAH
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Made in: 2016

 

Device R4833 (R 4833, R-4833, p4833, p-4833, p 4833)
This device is designed to measure resistance, constant e.m.f. , voltage and calibration of thermotechnical devices.
Measuring range: bridge - from 10-4 Ohm to 106 Ohm, potentiometer - from 0 to 111.10 mV, resistance box from initial (≤ 0.015 Ohm) to 1111.10 Ohm.
Accuracy class: DC box 0.1; DC potentiometer 0.05; ; resistance box 0.02 / 1.5 • 10-4

Devices R4833
Device R-4833 multimeter (hereinafter - device) is designed to measure resistance, constant e.m.f. , voltage and calibration of thermotechnical devices.
     Devices R4833 working conditions: ambient temperature from 10 ° to 35 ° C, relative humidity 80% at 25 ° C, atmosphere pressure (84-106.7) kPa [(630-800) mmHg].
 
Technical characteristics
Devices R4833 accuracy class, when used as: dc bridge 0.1; dc potentiometer 0.05; resistance box 0.02/1.5•10-4 .
Range: resistance measurements, when using device as bridge from 10-4 to 106 Ohm;
     measuring e.m.f and voltage, when using device P4833 as potentiometer from 0 to 111.10 mV (contour I -10 decades at 10 mV and 10 decades at 1 mV; contour II -10 decades at 0.1mV, and 10 decades mV at 0.01 mV);
resistance readings when using device as five-decaderesistance box from initial (≤ 0.015 Ohm) to 1111.10 Ohm (decade 100; 10; 1; 0.1; 0.01 Ohm).
 
Table 1
Measuredresistance, Ohm Backs ratio, N Voltage supply, V Additional resistance of external batteries, Ohm
External Internal circuits
10-4-10-3 10-4 - - 1.5 -
10-3-10-2 10-4 - - 1.5 -
10-2-10-1 10-3 1.5 1.5 1.5 3
10-1-1 10-2 1.5 1.5 1.5 3
1-5 10-2 1.5 1.5 1.5 3
5-102 10-1 1.5 1.5 1.5 3
102-103 1 7 7 36 -
103-104 10 7 7 36 -
104-105 102 48 7 36 510
105-106 103 48 7 36 510
 
Measuring resistance, Ohm Measurement error,%, not more than Parameters of external galvanometer
Internal galvanometer(IG) External galvanometer (EG)- any power supply
Internal battery(IB) Bridges battery external(BB) circuits
10-4-10-3 - ±5.0 - ±0.5* Rr≤20 Ом
10-3-10-2 - ±1.0 ±2.0 ±0.5* Ci≤ 1· 10-7 А/div
10-2-10-1 ±0.5 ±0.5 ±0.5 ±0.1* Ci≤ 5· 10-7 А/div
10-1-1 ±0.2* ±0.2* ±0.2* ±0.1* Rr≤20 Ом
1-5 ±0.1 ±0.1 ±0.1 ±0.1  
5-102 ±0.1 ±0.1 ±0.1 ±0.1  
102-103 ±0.1 ±0.1 ±0.1 ±0.1  
103-104 ±0.1 ±0.1 ±0.1 ±0.1  
104-105 ±1.0 ±0.5 ±0.5 ±0.1 Ci≤2 · 10-8 А/div
105-106 - ±2.0 ±5.0 ±0.1 Rr≤20 Ом
 
Note. When measuring resistances in range (10-4-10-3)Ohm ; (10-3-10-2) Ohm external current power supply should be 3A. Significance of back comparison initial resistance should be considered.
   Basic error:
1) When using device R4833 as bridge, the acceptable basic error limit (Δ) in Ohm corresponds to value defined by formulas:
    ∆ = ±10-2 · С · (10-1Rn + X)(1)
   or
    ∆= ±10-2 ·С · X, (2)
where C - accuracy class value, specified for given range (Table 1); Rn - normalizing resistance value for given measurement range, Ohm (Table 1); X - reading, measured from decades switches limbs, Ohm.
     Acceptable basic error limit corresponds to values specified in Table 1, under normal using conditions:
ambient temperature (20 ± 5) ° C; relative humidity of 25 to 80%; atmosphere pressure (84 - 106.7) kPa [(630-800) mm Hg];
working position - horizontal;
2) When using device R-4833 as potentiometer for emf and voltage acceptable basic error limit measurements (ΔU) in V corresponds to values defined by formula:
∆U= ±5 · 10-4 · (Un/10 + U),(3)
where Un - normalizing value ,V (Un = 0.1 V);
U- potentiometer reading, V, under normal using conditions:
ambient temperature (20 ± 2) ° C;
relative humidity of 25 to 80%;
atmosphere pressure (84-106.7) kPa [(630-800) mm Hg];
working position - horizontal;
no external magnetic field, except the earth one.
     When using device R4833 as potentiometer it must meet requirements of  basic error (instability) limits in accordance with accuracy class during one year from the date of first certification (calibration) under normal conditions (above) and under normal conditions of use, transportation and storage.
3) Acceptable deviation limit of actual resistance value (δ) in percentage from nominal when using device as resistance box corresponds to value defined by formula:
    δ = ± [0.02+1.5 • 10-4 (Rk/R-1)], (4)
where  Rk - maximum resistance value, Ohm (Rk = 1111.10 Ohm); R-nominal resistance value, Ohm.
Actual resistance value deviation from nominal in primary calibration (at manufacturer release) and acceptable resistance change δ in percentage per year (instability) does not exceed value determined by formula (4) under normal using conditions:
ambient temperature (20 ± 2) ° C;
relative humidity of 25 to 80%;
atmosphere pressure (84-106.7) kPa [(630-800) mm Hg.];
working position - any;
steady-state thermal equilibrium and power dissipation are not above nominal.
Acceptable basic error of backs resistances ratio is not more than  ± 0.025% (except the level with nominal value 0.09864 Ohm, for which acceptable error is not more than ± 0.25%) in normal using conditions (above).
Acceptable basic error of resistors box 2.5 and 7.5 Ohm is not more than ± 0.1%.
Built-in R4833 multimeter device regulated voltage source IPH ("mV") at voltage supply at least 1.3 V and load resistance not less than 25 Ohm provided at clamps
«-X», «mV»  voltage from minus 5V to plus 100 mV.
Voltage regulation discreteness is not more than 0.05% from maximum voltage at clamps «-X», «mV».
DC Bridge  built into device R-4833 is regulated power source IPH ("V") at voltage supply at least 5.6 V provides voltage from 0.5 to 5V at clamps «-X», «B».
Comparison resistors acceptable basic error in circuit with measuring connecting lines resistance for automatic bridges and ratio-meter is not more than ± 0.02%.
    Primary devices voltage U0 when used as potentiometer is 2.4·10-6V, resolution ΔUn is not more than 25·10-6V. Scale interval of smallest decade on one stage Umin= 10-5V.
Potentiometers installation resistance regulated part provides changes in installation steps, which do not exceed 0.01% from emf normal element value (1.0184-1.0194) V.
Primery resistance average value R0 of comparison devices back, resistance during installation of all decadal switches on zero, is not more than 0.015 Ohm.
Primary resistance variation ΔR0 of comparison back, caused by changes in contact resistance  switching devices, is not more than 0.0015 Ohm.
Nominal power dissipation on one decade  is not more than: 0.001 Watt for 0.01 Ohm, 0.01 Watt for 0.1 Ohm, 0.05 Watt for1 Ohm  and above.
Maximum power dissipation by one decade  is not more than: 0.005 Watt for 0.01 Ohm, 0.05 Watt for 0.1 Ohm, 0.1 Watt for 1 Ohm and higher.
 
Additional error.
When using device R4833 as bridge additional error limit in working temperature ranges does not exceed maximum acceptable basic error when ambient temperature changes for every 10 ° C.
When using device as potentiometer changes in readings, shown in percentage from  basic error does not exceed 100% when ambient temperature changes for every 10 ° C in range of working temperatures.
Note. Additional error caused by operating current installation is  not specified, because it is in basic error.
When using device as resistance box additional error limit in working temperature range of 15 to 25 ° C, caused by changes in ambient temperature (environment) between upper (lower) limit of normal temperature conditions range 22 ° C (18 ° C) and some point in related working conditions temperature range 25 ° C (15 ° C), corresponds to the largest change in resistance Rmax, within working temperature from 10 to 15 ° C and 25 ° to 35 ° C for every 5 ° C of temperature change  do not exceed value determined by  formula (4).
When using device R4833 as resistance box additional error limit as a percentage of its nominal value when power dissipation change from normal to any value do not exceed maximum power under normal using conditions and steady-state thermal equilibrium do not exceed value determined by the formula (4).
   
Power supply.
When used as a bridge - from built-in galvanic elements with voltage at least 1.5 mV (with four clamping connection of measured resistance from 10-4 to 102 Ohm), with voltage not less than 7.0 V (with two clamping connection of measured resistances from 102 to 106  of permissible DC pulsation, power supplies from 0 to 0.1%, maximum power consumed do not exceed 3A and 0.05 A; from external power supply according to table 1; from AC voltage (220 ± 22)V, frequency (50 ± 0.5) or (60 ± 0.6) Hz, sinusoidal waveform, the higher harmonics coefficient is not more than 5%.
When used as potentiometer - from built-in and external sources of DC voltage from 1.20 V to 1.65 V.
Power IPH ("mV") - from built-in and external dc sources with voltage from 1.20 to 1.65 V.
     Power IPH ("V") - from built-in and external dc sources with voltage from 4.8 to 6.6 V. Acceptable dc pulsation source from 0 to 0.7%, maximum power consumption is not more than 0.025 A.
Power consumed by device bridge R-4833 does not exceed 10VA.
Devices operating mode time does not exceed 15 minutes, after turn on. Working mode - intermittent.
Devices continuous operation time from system and built-in power supply is at least 8 hours. Interval time before re-enable is at least 15 minutes.
Insulation resistance between case and isolated dc electric circuits in working conditions is not less than 5·1011 Ohm at dc voltage (500 ± 100) V.
 
Insulation between case and insulated from case dc electrical circuits (all interconnected clamps) can withstand for 1 min test voltage of 0.5 kV, AC frequency 50 Hz in working condition, and between plug and case - 1.5 kV.
Resistance of each calibrated cables used in resistance measurement is from 0.0012 to 0.0015 Ohm.
Resistance of each calibrated cables, used for ratiometers and bridges verification is from 0.027 to 0.033 Ohm.
Resistance error (0.6; 1.6; 5; 15; 16.2; 25 Ohm) for simulation of  trunk pyrometric millivoltmeters is not more than ± 0.1 Ohm.
Dimensions are not more than 250x390x190 mm. Bridge p4833 weight is not more: without packaging - 8 kg; in transport container - 20kg. Total content of nonferrous metals, kg: aluminum D16A - 0.7; copper and copper-based alloys: copper wire MM - 0.3; bronze BrOF 6.5-0.15-1 - 0.2, brass L63 - 1.02; brass LC59-1 - 0.5.

Photos P4833 (Р4833)

R4833 (P4833) device image.
R4833 (P4833) device image.
R4833 (P4833) view panel of the device.
R4833 (P4833) view panel of the device.
R4833 (P4833) front view.
R4833 (P4833) front view.
R4833 (P4833) side view.
R4833 (P4833) side view.
R4833 (P4833) rear view.
R4833 (P4833) rear view.
R4833 (P4833) bottom view.
R4833 (P4833) bottom view.


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