Seaward DO4A ohmmeter ດິຈິຕອນແບບພົກພາ (40mΩ~4kΩ, 10µΩ~1Ω, 100µA~100mA)
Range: 4kΩ, 400Ω, 40Ω, 4Ω, 400mΩ, 40mΩ
Resolution: 1Ω, 100Ω, 10Ω, 1mΩ, 100µΩ, 10µΩ
Typical Current: 100µA, 1mA, 10mA, 100mA
Accuracy @ 20°C±5°C 1 year: ±(0.05% Rdg +0.02% FS), ± (0.05% Rdg +0.03% FS), ± (0.05% Rdg +0.05% FS)
Temp Coefficient/°C: 30ppm Rdg + 1ppm FS, 30ppm Rdg + 4ppm FS, 30ppm Rdg + 25ppm FS
Measurement: 4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance
Display: 15mm LCD 4000 count with automatic decimal point and polarity indication
Ranges: 6 push button selected with LED indication
Terminals: 4mm binding posts accept spade tags and 4mm banana plugs
Mains Supply
100/120/220/240V +10% to 13%
47 - 63Hz 20VA
Safety: EN 61010-1 EMC 61326
Calibration: Digital security key protected
Auto Zero: Permits the automatic zero of amplifiers and external circuits, eliminating errors due to thermal E.M.F
Battery: 6V 2.8Ah sealed lead acid battery with built-in charger. 14 hour typical operating time on lowest range, 28 hours typical on other ranges. Internal charger and automatic switch off.
Dimensions:
15 x 250 x 88mm / 0.5 x 9.8 x 3.5” (w x d x h) approx
1/2 19” rack 2U high
467 x 374 x 216mm / 18 x 15 x 8.5” (w x d x h) packed in carton
Mass: 3.5kg / 8lbs approx. 4.5kg / 10lbs packed in carton
Working Temperature: 0 to +40°C re. humidity 80% max. non-condensing
Storage Temperature: -20 to +50°C
Supplied complete with mains cord, measuring leads with Kelvin Clips, handbook and certificate of conformity
ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ