0-100 kOhm 0-111 kOhm 100000 ohm P4831 decade resistance box standard resistor

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Seller: electro-radio-device (399) 100%, Location: Lviv, Europe, Ships to: Worldwide, Item: 233383781390 P4831 (an old stock) 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 decades: 8;Nominal Value of resistance of one decade, Ohm: 10-3, 10-2, 10-1, 1, 10, 102,103, 104;High Accuracy class: 0.02%Total resistance:111 111.10 Ohm = 111.111 kOhm;Resolution: = 0.001 kohmType of the current: DC;Dimensions: 370x220x190mm;Weight: 5kg.Condition: 1. used, from an old stock, has some scratches on the body; 2. not tested; working condition is unknown; 3. 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 Р4831 designed to work in DC circuits as multivalued electrical resistance standard (MMEС), as well as transitional double decade electrical resistance standard (double decade MEC) for resistance measurement by substitution. Measurement range as electrical resistance standard 0.021 Ohm-111111.1 Ohm Nominal power 0.001 Watt for decade 0.01 Ohm, 0.01 Watt for decade 0.1 Ohm, 0.05 Watt for decade 1 Ohm and more. Accuracy class 0.02 Resistance boxes Р4831 (hereinafter - the box) are designed to work in DC circuits as multivalued electrical resistance standard (MVERS), as well as transitional double decade electrical resistance standard (double decade ERS) for resistance measurement by substitution. Normal using conditions of box: ambient temperature (20 ± 2) ° C; relative humidity of 25 to 80%; atmospheric pressure (84-106.7) kPa [(630-800) mm Hg]; operating position - any position. Working conditions of the box: ambient temperature (20 ± 5) ° C; relative humidity of 25 to 80% in working temperature range; atmospheric pressure (84 - 106.7) kPa [(630-800) mm Hg]; operating position - any position. Technical characteristics Boxes Р4831 accuracy class when used as MVERS 0.02 / 2·10-6. Boxes error, when used as double decade MEC depends on precision of model resistance coil, using conditions and time of measurement. Indications range fwhen using box Р4831 as MVERS - from initial 0.021 Ohm to 111111.10 Ohm stages through 0.01 Ohm, indication range for using box as double decade MEС: from 0.002 Ohm to 0.11 Ohm Stages through 0.001 Ohm from 0.12 Ohm to 1.1 Ohm » 0.01 Ohm from 1.2 Ohm to 11 Ohm » 0.1 Ohm from 12 Ohm to 110 Ohm » 1 Ohm from 120 Ohm to 1100 Ohm » 10 Ohm from 1200 Ohm to 11000 Ohm » 100 Ohm from 12000 Ohm to 110000 Ohm » 1000 Ohm Acceptable deviations limit (δn) of actual resistance value from nominal value,%, is calculated by formula: Rk - the largest box resistance value, Ohm, R - nominal value including resistance, Ohm. Deviation of actual resistance value from nominal at primary testing (at manufacturer release) does not exceed value calculated by formula (1) in normal using conditions, steady state of thermal equilibrium and power dissipation is not above nominal, box P4831 nominal current while turning on decades "X0.1 Ohm" and "X0.01Om" is not more than 0.3 A. Acceptable basic error limit δ as a percentage from normal value within one year from verification date after production, corresponds to value calculated by formula (1). Acceptable basic error limit while any year of operation (after the first year) corresponds to accuracy class. Acceptable additional error limit caused by changes in ambient temperature (medium) between the upper (lower) limit of temperature range in normal using conditions and some point of temperature range of working using conditions corresponding to values determined by formula (1). Acceptable additional error limit of resistance box P4831 as a percentage from nominal value while changes in power dissipation from nominal to any value, does not exceeding maximum capacity under normal using conditions and steady state of thermal equilibrium does not exceed value determined by the formula (1). Nominal power dissipation for one stage is: 0.001 Watt for decade 0.01 Ohm, 0.01 Watt for decade 0.1 Ohm, 0.05 Watt for decade 1Ohm or more. Maximum power dissipation for one stage is: 0.003 Watt for decade 0.01 Ohm, 0.03 Watt for decade 0.1 Ohm, 0.1 Watt for decade 1 Ohm or more. Relative box error (δm) as a percentage by using it as double decade MEC is determined by formula: where n', n" - number of resistors used in the first and second box decades,; RN1,RN2 - nominal resistance value of model resistance coils by which actual resistance value is determined by the first and second decades of box, Ohm; δN1, δN2 - relative error value of the first and second model resistance coils,%; δ01, δ02 - reference error value at calibration using resistors of first and second decades,%; τ - resistor decades measurement time (t ≤ 10 min); Δt - The highest value in absolute value of ambient air temperature at resistors calibration of the boxes first and second decades, ° C. P - power dissipation of the most loaded resistor in used decades, MWatt; Box P4831 initial resistance (R0) average value (resistance when boxes decades are switched on zero readings level) does not exceed 0.021 Ohm. Box initial resistance (ΔR0) variation, caused by changes in resistances of devices switching contacts does not exceed 0.0021 Ohm. Insulation resistance (Riz) between case and isolated dc electric circuits of the box in working condition is not less than 5·109 Ohm. Insulation between case and insulated from P4831 boxes case by DC electrical circuits in working conditions can withstand for 1 min test voltage of 2 kV AC frequency 50 Hz. Box P4831 dimensions does not exceed 370x220x190 mm. Box weight, kg, is not more: without packaging - 5, in transport container - 20. Box total content of nonferrous metals, kg: aluminum D16A - 0.175; copper and copper alloys, basis: copper wire MM - 0.112; bronze BROf. 6.5-0.15 - 0.195; brass L63 - 1.00; brass LC59-1 - 0.56. Technical characteristics: Resistance box Р4831 designed to work in DC circuits as multivalued electrical resistance standard (MMEС), as well as transitional double decade electrical resistance standard (double decade MEC) for resistance measurement by substitution. Measurement range as electrical resistance standard 0.021 Ohm-111111.1 Ohm 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 4831, P-4831, P4831, R4831, R 4831, R-4831, р4831, р 4831, р-4831, decade resistance box, resistance box, decade box, decade resistance, decade resistor box, shop, mera, etalon, resistance calibrators, calibrators. Condition: 1. used, from an old stock, has some scratches on the body; 2. not tested; working condition is unknown; 3. Usually I send unit in 5-10 business days after receiving payment – this time I need for unit testing procedure and preparing reliable packaging. PhotosIf necessary we can take photos of a device from various angles. Technical DocumentationIn 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 setOn 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. PackagingImmediately 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.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 5-15 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! Condition: Used, Condition: Condition: 1. used, from an old stock, has some scratches on the body; 2. Not tested. Working condition is unknown., MPN: Does Not Apply, Brand: P4831, Model: P4831

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