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Item: 334903967388

Condition:New – Open box: An item in excellent, new condition with no functional defects. The item may be … Read moreabout the conditionNew – Open box: An item in excellent, new condition with no functional defects. The item may be missing original packaging and may have been used for testing or demo purposes. The item includes accessories found with the original product and may include a warranty. See the seller’s listing for full details and description. See all condition definitionsopens in a new window or tab
P4830/1:P4830/1
MPN:Does Not Apply
P4830/1:P4830/1
Type:Resistance Decade Box

eBay P4830/1 or P4830/2 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. Price is for one of resistance boxes P4830/1 or P4830/2 (same devices but with different characteristics). Technical characteristics of P4830/1: Quantity of the decade: 6; Nominal Value of resistance of one decade, Ohm: 10-2, 10-1, 1, 10, 102,103; High Accuracy class: 0.05/2,5*10-5; Total resistance:12222.21 Ohm = 12.222 kOhn Resolution: = 0.01 kohm Type of the current: DC, AC; Dimensions: 490x135x365mm; Weight: 8,5kg. Technical characteristics of P4830/2: Quantity of the decade: 6; Nominal Value of resistance of one decade, Ohm: 10-1, 1, 10, 102,103, 104 ; High Accuracy class: 0.05/2,5*10-6; Total resistance:122222.1 Ohm = 122.222 kOhn Resolution: = 0.1 kohm Type of the current: DC, AC; Dimensions: 490x135x365mm; Weight: 8,5kg. Warranty 12 months. This device was also used in USSR and Russian army. So it has best quality, longevity, and permanence characteristic. Condition: NEW (not used, but from an old stock). Tested and 100% workable. If necessary, the device can be calibrated and provided with the calibration certificate from Government Standardization Institute ( +145-265usd). 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 Р4830/1 designed to work in DC and AC circuits frequency of 50 kHz as electrical resistance standards. Resistance range from 0.01 Ohm to 12222.21Ohm Dimensions do not exceed 490x135x365mm. Accuracy class 0.05 / 2.5 • 10-5 Resistance box Р4830/1 (GOST 23737-79) is to work in DC and AC circuits frequency of 50 kHz as electrical resistance standards. Normal using conditions of box P4830 / P4830 1/1: ambient air temperature (20 ± 2) ° C; relative humidity from 25 to 80%; atmospheric pressure (84 – 106.7) kPa [(630 – 800) mm Hg]. Operating conditions of box P4830 / 1: ambient air temperature (20 ± 2) ° C; relative humidity from 25 to 80%; atmospheric pressure (84 – 106.7) kPa [(630 – 800) mm Hg]. Technical characteristics Accuracy class of resistance box P4830 / 1 – 0.05 / 2.5 • 10-5. Measurement range of reproducible resistance from 0.01 to 12222,21 Ω levels through 0.01 Ω. Average initial resistance value of box P4830 / 1 ( resistance when set all switches on decadal zero readings) Ro, its variation ΔRo and OKP code correspond to values shown in table 1. Table 1 Resistance box Р4830/1 Average value of primaryresistance, Ω Variations of primaryresistance, Ω OKP code Throughordinaryclamps«1»-«2» Through low ohm clamps”2″ – “3” Throughordinaryclamps«1»-«2» Throughlow ohmclamps “2”- “3” 0.03 0.02 0.003 0.002 42 2513 0172 05 Nominal dissipation power of each decades level “X10000Ω” does not exceed 0.025 W, «X100000Ω” does not exceed0.0025 W. Nominal dissipation power of each decades level “X1Ω”, “X10Ω”, “X100Ω”, “X1000Ω” does not exceed 0.25 W, «X0.1Ω» – 0.025 W, «X0. 01Ω» – 0.0025 W; maximum dissipation power of each decades level “X100000Ω” does not exceed 0.005 W, «X10000Ω» – 0.05 W, «X1000Ω”, “X100Ω”, “X10Ω”, “X0.01Ω» – 0.5 W, «X0. 1Ω» – 0.05 W, «X0.01Ω» – 0.005 W. Acceptable deviation limit of actual resistance value (δ) in percentage of nominal, under normal using conditions are defined by the formula (1): δ1=±(0.05 + 2.5 · 10-5(Rk/R-1)) (1) where Rk – the highest resistance value of box P4830 / 1, Ω; R – nominal value of turn on resistance, Ω. Actual resistance value deviation from nominal at primary testing (at release from the factory), and permissible resistance change δ in percent per year (instability) does not exceed values calculated by the formula (1) in normal using conditions, at steady state of thermal equilibrium and power dissipation is not above the nominal, box P4830 / 1 nominal current if turneddecades «X0, 1Ω» and «X0, 01Ω» are not more than 0.3 A. Acceptable additional error limit of box P4830 / 1, caused by changes in ambient air temperature between the upper(lower) limit of the normal temperature conditions range and point adjacent to operating conditions temperaturecorresponds to the largest change in resistance Rmax, numerically equal to value determined by the formula (1). Initial inductance and box P4830 / 1inductance, at turn on inclusion resistance is up to 1 Ω (including initial inductance)through low ohm clamps is less than 1 μH. Limit values for box P4830 / 1time constant τ, at primary inductance exclusion and screen connection with low impedance output does not exceed values shown in table 2 (for resistance from 105 to 106 Ω τ normalized at power dissipation 0.025 W). Table 2 Nominal value of turned on resistance, Ω Time constant, τ, с At nominal power of one level, W 0.025 0.25 Over 1 to10 – 2 · 10-7 Over 10 to 103 – 1 · 10-7 Over 103 to 104 – 5 · 10-7 Over 104 to 105 1 · 10-6 – Over 105 to 106 1 · 10-5 – The upper limit of frequency range for each decade of box P4830 / 1 corresponds to values shown in table 3. Table 3 Decade, Ω The upper limit of frequency range,kHz 0.01 – 0.1 – 1 10.0 10 50.0 102 50.0 103 10.0 104 5.0 105 0.5 If more than one decade is turned on, the upper limit of frequency range does not exceed 20.00 kHz. Acceptable additional error limit of box P4830 / 1, caused by changes in frequency from zero to the upper limit of frequency range according to table 3 (frequency error), at power dissipation is not more than nominal, in normal usingconditions and steady thermal equilibrium does not exceed values defined by the formula (1). Electrical insulation resistance between case and isolated dc electric circuits of box P4830 / 1 in operating conditions is at least 2 • 108 Ω; Insulation between case and insulated from case DC electrical circuits of box P4830 / 1 in the operating conditionsstands for 1 minute action of 2 kV test voltage AC frequency 50 Hz. Dimensions of box P4830 / 1, not more than 490x135x365 mm. Weight of box P4830 / 1, not more than 8,5 kg. Total content of non-ferrous materials in box P4830 / 1 is given in table 4. Table 4 Name of non-ferrous metal Content in box Р4830/1, kg Aluminum D16A 0.2 Alloy AL 2 4.0 Copper wire MM 0.535 Bronze Br. PF 6.5-0.15 0.140 Brass L63 1.070 Brass LS59-1 0.4 Technical characteristics: Those devices are designed to work as a measure of electrical resistance in DC and AC with a frequency up to 50 kHz . Temperature 10-30 ° C; Relative humidity 25 to 80%; Atm. pressure 84-106,7 kPa (630-800 mmHg). This device can be also marked as: P 4830/1, P-4830/1, P4830/1 R4830/1, R 4830/1, R-4830/1, р4830/1, р 4830/1, р-4830/1, P 4830/2, P-4830/2, P4830/2 R4830/2, R 4830/2, R-4830/2, р4830/2, р 4830/2, р-4830/2,decade resistance box, resistance box, decade box, decade resistance, decade resistor box, shop, mera, etalon, resistance calibrators, calibrators. 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 10-15 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!

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