Dwyer Instruments Air Velocity Monitor, Model 660
This Dwyer Instruments air velocity monitor has an audible alarm
Item #: 164996
Manufacturer: Dwyer Instruments
Manufacturer Item #: 660
Your Price $271.95
Features & Applications:
This Dwyer Instruments air velocity monitor is 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.
Features:
- Mounting holes fit standard single gang electrical box
- Audible alarm and LED lights
Applications:
- Warns user if insufficient fume hood face velocity is encountered.
Specifications:
| Service: | Clean air and compatible, non-combustible 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 |
