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The Quest 261 is a Sound Detector/Controller that makes sound measurement perfectly hassle free for you. It uses remote microphones to monitor
noise within a specified area. When the noise exceeds a defined
threshold between 55 and 110dB, it activates an internal DPDT, 10A Fused,
300V rated relay. The relay can activate warning lights or alarms or it
can be used to control equipment.
Typical Applications Include:
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Hospitals, Neonatal Intensive Care Units
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School Lunchrooms, Gymnasiums, Classrooms
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Industrial Work Areas
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Environmental Work Areas
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Nightclubs and other Entertainment Establishments
For OSHA Hearing Conservation applications use the
Model 261, along with the LB-26 Light Box. These noise detectors prompt users when hearing
protection is required.
If you have technical questions about whether the 261
sound detector and sound controller is right for your sound measurement services, our
knowledgeable support staff is here to help. For intelligent answers to
your specific questions, please email
technical support.
For pricing and availability information regarding the purchase,
service or calibration of this or any Quest product, please email
Customer Service.
Brochures available:
Engish
Version
(pdf) 1.5M
261 Technical Specifications
dB Threshold Activation Range:
- 55 dB to 110 dB in 0.5 dB steps.
Microphone:
- Electret, Built-in FET preamp.
Area Coverage:
- Will monitor up to three areas with three microphones, each being up to
30 feet from the Model 261. (80 feet with the optional 50 foot extension
cable.)
Frequency Weighting:
Response Time:
- 4 Rise Times and 4 Fall Times, easily selectable from the front panel.
The LATCH Fall Time permits the relay to remain closed once activated.
RELAY RESET or REMOTE RESET (optional) must be used to deactivate the
relay.
Relay Contact Rating:
- 10 Amps Fused, 300 Volts Max., DPDT.
Accuracy:
Temperature:
- -30oC to +50oC operating.
Power Requirements:
Construction:
- Low power integrated circuitry in a rugged aluminum housing.
Size:
- 10 x 7 x 3 inches (260 x 180 x 80 mm)
Weight:
LB-26 Light Box Technical Specifications
Size:
- 20 x 8½ x 5 inches (508 x 216 x 127 mm)
Construction:
- Rugged aluminum case with translucent front and back
legend panels.
Lamps:
- Two 25 watt bayonet base bulbs:
120 Volt Lamps G.E. Product Code #14683, Model 25T6½DC/F120
230 Volt Lamps G.E. Product Code #14687, Model 25T6½DC/F230
Power Requirements:
- 120 Volt, 0.4 Amp or 230 Volt, 0.2 Amp. Supplied either through
customer-wired 1/2 inch conduit or optional 3 wire line cord.
Temperature Range:
- Operating, -10 to +60oC. Storage, -20 to +65oC.
Mounting Methods:
- One-half inch conduit from the top center of the LB-26 or two hooks and
chain from top surface. (See Figure 8.)
Standard Legend:
- International Safety Symbol plus "HEARING PROTECTION REQUIRED WHEN THIS
LIGHT IS ON."
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