P4834  Multivalued decade resistance box resistor analog of General Radio (GenRad), LEEDS & NORTHRUP, ESI, IET Labs, GR, Yokogawa, Shallcross, Tinsley & Co, Shallcross, Leeds & Northrup, L&N, Extech, EMCO, AEMC devices, but has the same or better characteristics:

  • Quantity of the decade: 8;
  • Nominal Value of resistance of one decade, Ohm:  10-2, 10-1, 1, 10, 102,103, 104, 105;
  • High Accuracy class: 0,02%;  0,02/2,5•10-7
  • Total resistance:1 111 111.10  Ohm = 1 111.111 kOhm;
  • The average service: at least 10 years;
  • MTBF: not less than: 2,500 hours;
  • Max  frequency range, kHz: 50;
  • Type of the current: DC, AC;
  • Dimensions: 310x212x175mm;
  • Weight: 5kg.

Condition:
1. New, not used, from an old stock; 
2. it is totally tested in the laboratory and 100% workable; 
3. accuracy (measurement error, nominal value) is fully consistent with technical documentation for this unit; 
4. unit has warranty 12 month warranty; 
5. if necessary, the device can be provided with the calibration certificate from Government Standardization Institute ( + 140 usd approx.); 

6. Usually I send unit in 5-10 business days after receiving payment – this time I need for unit testing procedure and preparing reliable packaging.


This device was also used in USSR and Russian army. So it has best quality, longevity, and permanence characteristic.


Also we can provide other resistance, capacitance and inductance standards, decade box and other etalons. 

Please take a look on my other items!

If you haven’t found the needed item in my listing, please contact me. I’ll try to help you. 

Resistance box P4834 designed to be used as electrical resistance multivalued standard (MMEС) in DC and AC circuits.
    Nominal resistance value of one decade
    higher decade 105 Ohm
    lower decade 10-2 Ohm
    Accuracy class 0.02 / 2.5 • 10-7.

 

Resistance box P4834 (hereinafter - the box) is designed to be used as electrical resistance multivalued standard (MMEС) in DC and AC circuits.
     Normal working conditions:
     ambient temperature (20 ± 2) ° C;
     relative humidity from 25 to 80%;
     atmospheric pressure 84-106.7 kPa (630-800 mm Hg.)
     DC;
     power is not more than nominal (specified in Table 1).

Resistance box P4834
    Working conditions of the box:
     ambient air temperature from 15 ° to 25 ° C;
     relative humidity from 25 to 80%;
     atmospheric pressure 84-106.7 kPa (630-800 mm Hg.)
     operating position - any position.
     Technical characteristics
     Basic parameters and dimensions of the resistance box are shown in Table 1.

 

Table 1

Parameter

Parameter value

Accuracy class, с/d

0.02/2.5·10-7

Nominal value of one decade resistance, Ohm:
    higher decade
    lower decade

 

 

105

10-2

Number of  decades

8

Nominal power dissipation per stage, Watt, at its nominal resistance:

10-2 and105 Ohm

10-1 and 104 Ohm

from 1 to 103 Ohm

 

 

0.003

0.03

0.3

Maximum power dissipation per one decade, Watt, at its nominal resistance:

10-2 and 105 Ohm

10-1 and 104 Ohm

from 1 to 103 Ohm

 

 

0.005

0.05

0.5

Higher limit of frequency range, kHz

50

Dimensions, mm

310х212х175

 Weight, kg, not more than

5

 

Resistance boxes decades provide ability to set resistance value in accordance with number (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) x10n, where n = -2; -1; 0, 1; 2, 3, 4, 5.
    Acceptable deviation limit of  boxes actual resistance value (δ) in percentage from nominal under normal using conditions is defined by the formula:
δ=±(0.002 + 2.5 · 10-7(106/R-1))    

where R - nominal value of resistance, Ohm, under normal using conditions.
    Limiting value of boxes constant time (T) at exclusion of primary inductance is equal to value shown in table 2.

 

Table 2

Nominal value of enabled resistance, Ohm

Time constant, τ, с

From 1 to 10 enable.

2·10-7

More than 10 to 103

1·10-7

More than 103 to 104

5·10-7

More than 104 to 105

1·10-6

More than 105 to 106

1·10-5

Average initial resistance value does not exceed:
     0.012 Ohm at clamp  "5" - "9";
     0.024 Ohm at clamp "1" - "9" for HR11 set switchers on clamp "2" - "3" and HR12 at clamp "4" - "5".

Initial resistance values variation is less than 0.0012 Ohm and 0.0024 Ohm.
    Primary inductance L0 in microhenries at boxes clamps "5" - "9" does not exceed value defined by the formula L0 = 0.1 m +0.2, (2)
     where m - number of enabled decades of the box.
     Inductance at resistance turn on is not more than 1 Ohm at same clamps does not exceed 0.8 mkH.
    Acceptable additional error limit of the resistance box, caused by changes in ambient temperature between the upper (lower) temperature range limit in normal using conditions and  in some point of temperature working conditions corresponds to the largest resistance change (Rmax), is equal to the value determined by the formula (1).

Acceptable additional error limit of resistance box (δр) in percentage from its nominal value when the changing power dissipation from nominal to any value does not exceeding maximum power under normal using conditions and thermal equilibrium steady state, is equal to value determined by the formula (1).

Acceptable additional error limit of resistance box (δр)  as a percentage, caused by frequency changes from zero to the upper frequency range limit shown in table 3 (frequency error) is equal to ± 0.05%.

Electric insulation resistance between case and isolated by DC electric circuit in working using conditions is not less than 5 • 1010 Ohm.

Insulation between case and insulated from case by  DC electric circuit can withstand for 1 min of test voltage alternating current frequency (50 ± 1) Hz, rms value is equal to 2 kV.

 

Table 3

Decade factor

Frequency range upper limit , kHz

«х 1 Ohm»

«х 10 Ohm», «х 102 Ohm»

«х 103 Ohm»

«х 104 Ohm»

«х 105 Ohm»

25

50

10

5

1

Switches can withstand 50000 turns from lock to lock, have a smooth running and precise fit.

Box rate mean time between failures is 10000 hours, taking into account regulated operational documentation.

Mean time between failures is set for working using conditions and dissipation power to one level and is not more than nominal.

Failure criterion is box’s discrepancy to formulas requirements (1).

Average life time of box’s operating state 24 hours

Full average box life service is10 years.

Box fixed-failure operating time  in working conditions and maximum power dissipation at same level is 1000 hours

Box specified life service - 5 years.

Silver content in box – 3 g.

Non-ferrous metals content in box:
aluminum alloys - 576.5 g;
copper alloys 1470.63 g.


Technical characteristics: 
    
Resistance box P4834 designed to be used as electrical resistance multivalued standard (MMEС) in DC and AC circuits.
  •     Temperature 15-25 ° C;
  •     Relative humidity 25 to 80%;
  •     Atm. pressure 84-106,7 kPa (630-800 mmHg).
  
This device can be also marked as: P 4834, P-4834, P4834, R4834, R 4834, R-4834, р4834, р 4834, р-4834, decade resistance box, resistance box, decade box, decade resistance, decade resistor box, shop, mera, etalon, resistance calibrators, calibrators. 

Condition:
1. New, not used, from an old stock; 
2. it is totally tested in the laboratory and 100% workable; 
3. accuracy (measurement error, nominal value) is fully consistent with technical documentation for this unit; 
4. unit has warranty 12 month warranty; 
5. if necessary, the device can be provided with the calibration certificate from Government Standardization Institute ( + 140 usd approx.); 

6. Usually I send unit in 5-10 business days after receiving payment – this time I need for unit testing procedure and preparing reliable packaging.


       Photos

If necessary we can take photos of a device from various angles.

      Technical Documentation

In case you didn't find in technical specifications for the device all necessary information you are interested in, feel free to contact me.  I will look through the technical documentation for the device and I will be happy to consult you.

Also I may speak directly with the manufacturer and find out more specific information about this product.

If some technical parameters for the device (error, accuracy, measuring range, operating voltage and frequency) do not meet your requirements, please, e-mail me and I will negotiate with the manufacturer whether it is possible to deliver you a device on the desired specifications without a cost increase and in the shortest time.

On delivering the device, electric circuit diagrams and all technical documentation for operation, calibration and maintenance will be supplied. Also there will be documents that testify the accuracy and compliance with specifications.

In addition, translation of technical documentation into the customer’s language may be discussed.

            Delivery set

On delivering the device will be completely ready for use.

There are all necessary cables, adapters, sensors and spare parts as envisaged in technical documentation. Hence, there is no point in purchasing any additional repair & measurement equipment.

           Warranty

Warranty of this item - 12  month.

Before sending a device, all devices are checked whether they comply with all technical specifications.

Highly qualified metrology engineers carry out the check-up of every instrument at a specialized laboratory and with the help of master gages.

If necessary, we can send you photos or video with the check-up process. 

I ship only fully working devices complying with all parameters.

The warranty for this device is 1 year from the date of shipment from my warehouse.

Within 1 year term I will provide the repair of the device for free in case of manufacturing defect or when the technical parameters do not comply with technical documentation. You will have to pay only for delivery. 

When a device is out of order due to your fault (its fall, it is flooded with water, the power supply does not meet the specified technical requirements, input signals exceed the norm, etc.) or there are conspicuous marks of casing opening (broken warranty labels), it is considered a non-warranty repair.

Within 1 year term we can advise you for free on the device operation.


          After-warranty service

After warranty termination I can arrange a paid repair and technical maintenance of a device as well as I can sell you all necessary spare parts for repair at minimum prices. I always have them in stock.

           Packaging

Immediately after checking, the device will be wrapped in several layers of strong air-bubble film and placed into a strong cardboard box. Extra cardboard plates will be used for fixation.

If necessary, wooden box or pallet may be used. For a more reliable fixation foam can be applied. The whole box will be placed in a waterproof polyethylene bag which will be wound with several layers of packing tape.

A special handle will be made for ease of transportation.

Thus, I guarantee qualitative and conscientious packing of the device that reduces to minimum the possibility of damage during transportation.

         Discount (from-10% to -90%)

I suggest you a device which is unique in its class and price category with the following specifications: (accuracy, measurement range, error, temperature operating conditions), endurance and durability (military performance, aluminum, stainless steel, titanium or carbolite casing, shock and vibration resistance, high maintainability and reliability), free measuring kit (cables, adapters, load, fuses, etc.), 1year warranty.


Unused cheap devices with the same specifications, accuracy and durability do not exist.

If you consider the price for this device unreasonably high, and you know the similar equipment at a lower price, please, let me know.

I will help you to compare these two models. In case your model (which is cheaper) is the same as the device I suggest or even it is better, then
I guarantee to sell you a unit at that cheaper price with additional 10% discount.

 

       Shipping details:

Please, mind that I ship from Ukraine (Europe, +2), so that the shipping time may differ from your local time.

I send goods via AirMailpost.

App. delivery time :

Europe – 7-15 days;

USA, Japan&others – 10-20 days (depends on a country).

I will ship in 5-10 business days after payment clearance.

The goods may also be delivered by the express mail services such as DHL, UPS, FedEx, TNT or EMS.

With express delivery you will mostly receive your goods within 3-7 working days.

 

           Payment details:

I expect payment in 4 days after the auction ends.

I accept a PayPal payment as the safest way of payment (preferably).

If you do not have a PayPal account you can pay by wire transfer to my credit card.

Other variants of payment are acceptable, for example in case of pickup way of shipping, i can accept cash payment. 

(This will be an official purchase on eBay).

 Please, tell me if you cannot pay in time, we can always negotiate it. 

When purchasing a few items, you’ll save on shipping. 

 

        Return policy:

I accept refunds and returns. If there is something wrong with the device, please, inform me within 5 days after receiving it.

I will refund your costs or send you the other item, as you wish (after I receive the previous item).

Please only serious bidders!