{"title":"Decade Resistance Boxes","description":"\u003cp class=\"tbk__subtitle\"\u003eA range of units to cover the requirements of both development laboratories and calibration and test departments.\u003c\/p\u003e","products":[{"product_id":"portable-9-decade-high-resistance-box-model-4720-series","title":"Portable 9 Decade High Resistance Box Model 4720 Series","description":"\u003cp\u003eDesigned for the checking and calibration of insulation testers at voltages of up to 5000V DC, the Tinsley Model 4720 high resistance decade boxes provides up to 9 decades of resolution.\u003c\/p\u003e\n\u003cp\u003eThe total range covered is from 1 kΩ to 1,111,111,110kΩ using specially selected resistors and high quality switches mounted on an easy to read panel.\u003c\/p\u003e\n\u003cp\u003eThese decade resistance boxes are housed in strong polymer portable cases with lids and carrying handles to provide an ideal solution to on-site and laboratory calibration of high resistance insulation testers.\u003c\/p\u003e\n\u003cp\u003eThe instruments can be supplied complete with a calibration certificates provided by our own in-house calibration laboratory.\u003c\/p\u003e\n\u003cp\u003eAccessories\u003c\/p\u003e\n\u003cp\u003eA4720-110: A pair of open ended test leads fitted with special high insulation plugs for connection to the decade box are provided.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"tinsley.co.uk","offers":[{"title":"Default Title","offer_id":57376295944527,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/2088\/5583\/files\/tinsley_4720.jpg?v=1775048821"},{"product_id":"single-high-resistance-decade-box-model-4721-single-high-resistance-decade-box-model-4721","title":"Single, High Resistance Decade Box Model 4721","description":"\u003cp\u003eThe Tinsley Model 4721 decade box is designed for the checking and calibration of insulation testers at voltages of up to 5000V DC.\u003c\/p\u003e\n\u003cp\u003eThe total range covered is from 1 kΩ to 1TeraΩ using specially selected resistors and a high quality switch mounted on an easy to read panel.\u003c\/p\u003e\n\u003cp\u003eThis resistance box is housed in a strong aluminium case with lid and carrying handle to provide an ideal solution to on-site and laboratory calibration of high resistance insulation testers.\u003c\/p\u003e\n\u003cp\u003eThe instrument can be supplied complete with a calibration certificate provided by our own in-house calibration laboratory.\u003c\/p\u003e","brand":"tinsley.co.uk","offers":[{"title":"Default Title","offer_id":57376322191695,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/2088\/5583\/files\/47211.jpg?v=1775049247"},{"product_id":"zx-series","title":"ZX Series","description":"\u003ch4 class=\"tbk__subtitle\"\u003eZX74 Series\u003c\/h4\u003e\n\u003cdiv class=\"tbk__text\"\u003e\n\u003cp\u003eThe ZX74 Series of Decade Resistance Boxes are very high accuracy and stable six-dial instruments. There are 4 versions in the series with a maximum resistance of 1,111,111Ω. The ZX83 series adds another two Decade Boxes that extend the resistance range to 111,111,100Ω.\u003c\/p\u003e\n\u003cp\u003eThe resistive elements are non-inductively wound on high quality formers using a resistance wire of specially selected alloy. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and also a low temperature coefficient.\u003c\/p\u003e\n\u003cp\u003eSwitches are of the highest quality with low pressure contacts for long life and reliability. Each decade switch is manufactured using a fully enclosed construction for maintenance free operation. These decade boxes are housed in attractive robust metal cases with a retractable carrying handle.\u003c\/p\u003e\n\u003cp\u003eThe very popular ZX74 model has a lowest decade with steps of 1mΩ. This is particularly useful for Resistance Thermometer Simulation and resistance bridge networks. All models have an extra terminal connected to the electrostatic screen which may be required in AC. bridge applications.\u003c\/p\u003e\n\u003ch4 class=\"tbk__subtitle\"\u003eZX90 Series\u003c\/h4\u003e\n\u003cdiv class=\"tbk__text\"\u003e\n\u003cp\u003eThe ZX90 Series of Decade Resistance Boxes comprise of 10 instruments to cover a resistance range of up to 1,111,111Ω with instruments available in 4, 5, 6 and 7 Decades. Whilst they are low cost these instruments are of high quality and feature precision low contact resistance switches.\u003c\/p\u003e\n\u003cp\u003eThe resistive elements are made of enamelled manganin wire which is non-inductively wound onto high quality formers. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and to achieve low temperature coefficient. The instruments are housed in an attractive metal case which is both robust and dust proof.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"tinsley.co.uk","offers":[{"title":"Default Title","offer_id":57376375931215,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/2088\/5583\/files\/decadresistance-boxes.jpg?v=1775049457"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/2088\/5583\/collections\/decade-boxes.png?v=1775655688","url":"https:\/\/tinsley.co.uk\/collections\/decade-resistance-boxes.oembed","provider":"Tinsley Instrumentation Ltd","version":"1.0","type":"link"}