3M 2100 ເຄື່ອງວັດແທກລະດັບສຽງ
Display: 3 1/2 Digit Liquid Crystal Display. Level display indicates to 0.1 dB resolution. Annunciator is included for Battery Check.
Modes of Operation: Measures sound pressure level (SPL) or maximum level (MAX).
Linear Operating Range: 32 to 140 dBA, 38 to 140 dBC
Electrical Noise Floor: 25 dBA, 32 dBC typical
Frequency Weighting Networks: A and C
Meter Response: Slow and Fast
AC Output: Approximately 0 - 1 V AC RMS. 1000 ohm output impedance, 3.5 mm stereo jack
DC Output: Approximately 0 - 1 V DC RMS. Each 0.167V change equals l0dB (1 V/60dB). 1000 ohm output impedance, 3.5mm stereo jack
Detector: True RMS
Overload Indicator: A '+' sign in the display indicates overload
Temperature Accuracy: Within 0.5dB at 23°C; Within 1.0dB over the temperature range of -10°C to +50°C
Level Range Accuracy: +/- 0.7dB from 31.5 - 8000 Hz
Operating Temperature Range: -10°C to +50°C
Storage (less batteries): -20° to + 60°C
Operating Humidity: 0 to 95% relative humidity, non-condensing.
Battery Life: 9 Volt Alkaline, approximately 25-30 hours
Size: 2.8 x 7.6 x 1.3 inches (including mic)
Weight: 10.3 oz. (293 g.) including battery
ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ