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Dwyer
Model 660 Air Velocity Monitor
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| Continuously Measures
Fume Hood Airflow |
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 Model
660 Air Velocity Monitors are a practical, affordable way
to continuously monitor for safe airflows through laboratory
fume hoods. They are typically installed in the fume hood side
fascia and connected to the interior sidewall via 1-1/8" flexible
tubing. As the exhaust fan draws air through the device, a
sensitive constant temperature thermistor measures flow and
lights a green (normal), yellow (high) or red (low) LED. An
audible alarm also warns of low flow and requires manual resetting.
Mounting holes fit standard single gang electrical box. Dimensional
Information
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| SPECIFICATIONS: |
Service: Air and non-combustible,
non-corrosive gases.
High Setpoint Range: 0-275 FPM (0-1.397 m/s).
Low Setpoint Range: 0-150 FPM (0-.792 m/s).
Repeatability: ±7% of full span, 0-50 and 150-275 FPM; ±5%
of full span, 50-150 FPM.
Compensated Temperature Range: 50 to 90°F (10 to 32.2°C).
Operating Temperature Range: 32 to 120°F (0 to 48.9°C).
Power Supply: 24 VAC, 3 watts maximum.
Response Time: 6-10 seconds.
Warm-Up Time: 3-5 minutes (no flow).
Audible Alarm: 75 dB between 3-10 feet.
Weight: 3 oz (85 g).
Mounting Hardware: (2) #6 x 1" sheet metal screws, (2) 6-32 x 7/8" machine
screws. |
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| POPULAR MODELS |
| Model Number |
Description |
| 660 |
Air Velocity Monitor, Includes 3' Flexible Tubing,
Pre-fittings and 90º Elbow, 120 VAC to 24 VAC
Power Transformer |
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