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最新国际求购:阻抗计 ,impedance meter impedance meter hand held digital test meter suitable for field use by engineers installing public address/evacuation sound systems. primary use will be on 100 volt line systems but if equipment suitable for 70 volt, 50 volt and 25 volt lines this would be advantageous. instrument should ideally provide direct read-out. conversion chart systems while being considered are not the preferred option. the meter should incorporate a signal generator operating at 1khz to ensure reading accuracy. display accuracy should generally be better than ±1%. if multiple test frequencies incorporated for more detailed testing this would also be ok but not of primary concern. test range must cover 0-20,000 ? in 3-5 ranges. ideally instrument should be capable of measurements as high as 100,000 ?.test meters that also directly display load wattage would be preferred but not considered essential. equipment must be battery powered using aaa; aa 1.5 volt cells or 9 volt. otherwise lithium battery or re-chargeable nimhi would also be ok. a protective carry case should be available either as a standard accessory or optional. must be supplied complete with test leads and operating instructions must be in good english.please provide full technical details including weight and dimensions as well as photograph.quantities as this is a specialist device order quantities are expected to be in multiples of 10-20 pcs. where a manufacturer is able to offer several models we would expect to be able to place an order for mixed quantities.212 thornhill manor, modderfontein, south africacontact person mr. henry randalltelephone 27-11-6083769 更多: www.todaytex.com
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