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Quest Electronics Model 2700 Impulse Sound Level Meter *Used, Power-On Tested*

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Quest Electronics Model 2700 Impulse Sound Level Meter *Used, Power-On Tested* These meters are designed to provide you with a measurement of Sound Pressure Level (SPL) and maximum SPL for...

$99.00

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Quest Electronics Model 2700 Impulse Sound Level Meter *Used, Power-On Tested*

These meters are designed to provide you with a measurement of Sound Pressure Level (SPL) and maximum SPL for a variety of 

combinations of user-selected response time constants, frequency weightings, measurement ranges and optional octave band filter settings.

 

Standards: Type 2 ANSI S1.4-1983, IEC 651-1979.

Display: 3-1/2 Digit Liquid Crystal Display with an additional Quasi-Analog 60 dB indicator in 2 dB increments. 

Level display indicates to 0.1 dB resolution. Indicators are included for Battery Check, Hold, and Overload Indication.

Modes of Operation: Measures Sound Pressure Level (SPL) and Maximum Level (MAX). Peak Level (PEAK) and Impulse Level (IMP) can also be measured.

Minimum Measurement: 35dBA. Using Linear Weighting with an Octave Filter Set. The minimum measurement varies depending on the filter frequency selected.

Frequency Weighting Networks: A, B, C, and Linear. When using a filter set, any one of the weightings may be selected.

Meter Response: Slow, Fast, Impulse, and Peak. (The Peak onset time constant is less than 50 microseconds). Peak measurements may be made in either A, B, C, or Linear Weighting.

Microphones: Removable precision 1/2 inch prepolarized condenser (electret) microphone is standard.

Preamplifier: Directly accepts 0.52'' microphone, other sizes with proper adapter. Removable preamp will drive up to 100 feet of cable with negligible signal loss. Preamplifier model 056-852. 

The input impedance is greater than 1 Gohm in parallel with 47 pF.

Meter Input: The input impedance is 1 Megohm in series with 0.1 MFD. The maximum sinusoidal input voltage is 10V RMS.

AC Output: 3.16 V RMS at full scale (60 dB). (3.8 V RMS maximum) The output impedance is 3.2K ohms. Connected equipment should be at least 10K ohms. The output can be shorted without damaging the meter or changing the meter reading.

DC Output: 0 to 1.00V DC; 60 dB span. Each 0.167V change equals 10 dB. Connected equipment should be at least 10K ohms. The output can be shorted without damaging the meter or changing the meter reading.

Frequency Range: 4 Hz (-3dB) to 50 kHz (-3dB) on linear weighting, meter only. (Subject to microphone limitations.)

Reference Range: 60 to 120 dB Range setting

Reference SPL: 94 dB

Reference Frequency: 1 kHz

Detector: True RMS

Detector Pulse Range: 63 dB

Detector Measuring Range: From 0 dB to 40 dB on the painted scale (when measuring a signal with a 20 dB Crest Factor). The extra 20 dB (40 to 60) on top of the measuring range produces the 20 dB Crest Factor capability.

Primary Indicator Range/Linearity Range: 60 dB. Tested with a sinusoidal signal input.

Level Linearity: Inside the Primary Indicator Range. Tolerance is +/- 0.7 dB referenced to 94 dB for model 1700, +/- 1.0 dB.

Overload Indication: OL appearing in the display indicates overload.

Attenuator Accuracy: Referenced from the Reference Range and the Reference SPL (+34 dB on the painted meter scale). Within 0.7 dB from 31.5 Hz to 8 kHz.

Warm-up Time: 30 seconds.

Accuracy: Within 0.7 dB at 25oC. Within 1.0 dB over the temperature range of -10

 
Condition:
Item shows some signs of use (scratching, scuffing). 
Includes the main unit only. Includes external microphone (Not pictured). 

Medical Items Disclaimer (For Medical Items)... The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. To the best of our knowledge, this item has been cleaned and handled in accordance with the manufacturer’s instructions and specifications. Our address: 3090 Osgood Ct. Fremont, CA 94539 (510) 226-0600 

No other accessories included. Requires 2 9V batteries (not included).

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