Landtek ND9 Sound Pressure Level Noise Calibrator Meter Mics 94dB/114 dB High Accuracy ND9

Features

-Sound Pressure Level with 94 dB and 114 dB
-High Accuracy with ¡Ó0.3 db
-Generates standard levels and frequencies
-Low influence of static pressure
-Sensitivity calibration of microphones
-Designed for 1" and 1/2" microphones
-Adaptable to 1.5" microphone size
-Supplied with Instruction Manual and batteries
-IEC942 Class I standard compliant
Specifications
-Sound Pressure Level: 94 dB and 114 dB
-Accuracy: ¡Ó0.3 db (20 ?C, 760 mm Hg)
-Frequency: 1000 ¡Ó0.1% Hz (allows calibration with A,B,C or D weighting networks or linear)
-Design For: 1" and 1/2" microphones
-Operating Temperature range: -10 ~ 50 ?C (14 ~ 122 ?F)
-Storage Temperature: -40 ~ 65 ?C (-40 ~ 149 ?F)
-Temperature coefficient: 0 to 0.01 dB/?C
-Altitude Effects: approx. 0.1 dB decrease for each 2000 feet increase in altitude from the sea
-level to 12,000 feet elevation or comparable atmospheric pressure change (approx. every 50 mm of Hg decrease)
-Power Supply: 2 x 9v transistor batteries NEDA 1604. Burgess 2U6 or equivalent.
-Battery life: approx. 100 hours
-Standard: IEC942 Class I
-Dimension: approx. 138 (L) x 48 (W) x 48 (D) mm (5.43 x 1.89 x 1.89 inch)
-Weight: approx. 250 g (8.82 oz) (battery included)
One Set Included
-1 x Sound Level Calibrator
-1 x 9V Battery (installed)
-1 x Carrying Pouch
-1 x Instruction Manual
-Standard Factory Package