Dwyer 670 User Manual

Page 4

SPECIFICATIONS
Service: Fume hood face velocity air flow.
Alarm Range: 30-400 FPM (0.15-2.0 m/s).
Alarm Indication: Red LED & audible alarm.
Low Air Velocity Alarm Delay: Fixed 5 secs.
Display:

Visual LEDs:

Red: Alarm.
Green: Normal.

Horn Silence: Yes-temporary and permanent.
Accuracy: Face velocity ±10%.
Operating Temperature: 55-86°F (13-30°C).
Storage Temperature: -40 to 150°F (-40 to 65°C).
Power Requirement Input: 15 VDC 500 mA; 120 VAC, 60 Hz power transformer included.
Relay Output Low Air Flow Alarm: 5 amps @ 250 VAC.
Relay Input For Night Setback: 2 wire rated for 24 VDC usage.
Sash High indication: Using a two wire micro switch or 3 wire proximity switch input,
rated for 24 VDC usage.
Comm Port: RS232- Can be connected via serial interface to LAN network.
Mounting: Semi flush, flush or surface mounted when using included bracket.
Agency Approval: CE.

AV-670:B-32 10/1/09 2:20 PM Page 4