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MODEL 670
FUME HOOD MONITOR
Ensures Proper Fume Hood Performance
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[5.08]
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AIR QUALITY
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The Model 670 Fume Hood Monitor continuously senses air ow through the face
of the fume hood, ensuring safe levels of fresh air are exhausting. The 670 provides
a highly accurate hot wire sensor to detect very low ows common on fume hoods.
The Model 670 comes with everything required to quickly install the unit including a
mounting bracket, 24˝ of tubing for connecting to the inside of the hood wall and a 120
Volt AC power adaptor.
BENEFITS/FEATURES
• Flexible surface or ush mounting
• LED safe and alarm status indicators
• Audible alarm
• Sash alarm input
• Night time set-back
APPLICATIONS
• Fume hood ventilation monitoring
MODEL CHART
Model Description
670 Fume hood monitor
SPECIFICATIONS
Service: Fume hood face velocity air ow.
Alarm Range: 30-400 FPM (0.15-2.0 m/s).
Alarm Indication: Red LED and audible alarm.
Low Air Velocity Alarm Delay: Fixed 5 s.
Visual LED Display: Red: Alarm; Green: Normal.
Horn Silence: Yes-temporary and permanent.
Accuracy: Face velocity ±10%.
Temperature Limits: Operating temperature: 55 to 86°F (13 to 30°C); Storage
temperature: -40 to 150°F (-40 to 65°C).
Power Requirement: 15 VDC 500 mA; 120 VAC, 60 Hz power transformer
included.
Relay Output Low Air Flow Alarm: 5 A @ 250 VAC.
Relay Input For Night Setback: 2-wire rated for 24 VDC usage.
Sash High Indication: Using a 2-wire micro switch or 3-wire proximity switch input,
rated for 24 VDC usage.
Mounting: Semi ush, ush or surface mounted when using included bracket.
Weight: 5.0 oz (141 g).
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