美国Extech 407735型数显式双范围噪音计

美国Extech 407735型数显式双范围噪音计（内置校准器）特点：
高低量程可切换
最大值锁定，复位功能
内置校准器（94dB)
模拟AC/DC输出，连接分析仪和记录器
可使用三脚架用于野外测量

美国Extech 407735型数显式双范围噪音计技术参数
量程：LOW-35～90dB High-75～130dB
精度：±1.5dB
A/C加权切换
快慢响应时间可选

Features:

？ A and C weighting
？ High and Low measuring ranges:
Model 407735- Low (35 to 100dB), High (65 to 130dB)现已停产
Model 407736- Low (35 to 90dB), High (75 to 130dB)
？ 0.1dB resolution
？ Fast/slow response
？ Max Hold with reset button
？ Model 407736 meets ANSI and IEC 651 Type II standards
？ Large 0.5"  3-1/2 digit LCD display
？ Built-in calibration check (94dB)
？ Tripod mount and analog DC/AC conditioned outputs of 10mV/dB
？ Utilizes 0.49"(12.3mm) condenser microphone
？ Dimensions: 9.5 x 2.7 x 1" (241 x 69 x 25mm)
Weight: 7.6 oz (215g)
？ Complete with hard vinyl case and 9V battery

Ordering Information:
407735 ....................Digital Sound Level Meter, 2dB accuracy
407735-NIST..........407735 with NIST Certificate
407736 ....................Digital Sound Level Meter, 1.5dB accuracy
407736-NIST..........407736 with NIST Certificate
407766 ....................94/114dB Sound Level Calibrator
40705X ....................AC/DC Recorder Output Cable