Quest Sound Detector SD-200

Key Features:

• User-Friendly | Simple four-button navigation to perform all functions. Comes ready to take measurements; no configuration necessary.
• Industry Compliant | Meets applicable ANSI and IEC Class 2 standards. Consistent performance with accurate, actionable readings
• Average Sound Pressure Level (LEQ/LAVG) | Integrating feature computes the average sound pressure level. Provides stable readings where noise levels typically vary, for easier interpretation. 
• LED Alerts | Tri-color LEDs flash brightly when preset noise levels are reached. Helps user understand where hearing protection may need to be worn.
  + Green LED flashes when noise measurements are between 80 and 85 dB
  + Yellow LED flashes when noise measurements are between 85 and 105 dB
  + Red LED flashes when noise measurements are above 105 dB.
• Rechargeable | Lithium polymer battery provides up to 50 hours of use between charges. Reduces the cost and hassle of replaceable batteries.

Key Technical Specifications:

Acoustic Measurement Performance

• Measurement Type: Sound Pressure Level (SPL)
• Average Sound Level: LEQ / LAVG integrating measurement
• Maximum / Minimum Values: MAX and MIN recording
• Linearity Range: 45 – 130 dB dynamic range
• Exchange Rate: 3 dB or 5 dB selectable
• Frequency Weighting: A or C weighting
• Time Response: Fast or Slow response options

Microphone & Sensors

• Microphone Type: Electret condenser
• Diameter: ½-inch
• Directionality: Omni-directional
• Classification: Type / Class 2 measurement microphone

Display & Indicators

• Display Resolution: 0.1 dB
• Update Rate: 0.5 seconds
• Display Size: ¾ inch (2 cm) digital display
• Status Indicators:
• • SPL reading
  • LEQ / LAVG average sound level
  • MAX / MIN levels
  • Run-time indicator
  • Overload (OL) / Under-range (UR) warning
  • Hearing protection icon alert

LED Noise Alert System

Tri-color LED indicators provide instant noise exposure warnings:

• Green LED: 80 – 85 dB
• Yellow LED: 85 – 105 dB
• Red LED: Above 105 dB

These visual alerts help identify when hearing protection may be required in noisy environments.

Controls & Interface

• Keypad: 5-button control panel
• Functions:
• • Frequency weighting (A/C)
  • Time response (Fast/Slow)
  • Mode selection
  • Run / Stop measurement
  • Power on / off

Power & Battery

• Battery Type: Rechargeable Lithium Polymer (1000 mAh)
• Typical Runtime: Up to 50+ hours per charge
• Charging Method: USB charging via computer or adapter
• Battery Indicator: Low battery warning indicator

Environmental Operating Conditions

• Operating Temperature: 0°C to 40°C (32°F to 104°F)
• Storage Temperature: −20°C to 70°C (−4°F to 158°F)
• Humidity Range: 0 – 90% RH (non-condensing)
• Operating Pressure: 80 – 110 kPa