The series 640 features ¡¾2% accuracy with four field selectable ranges of 0-200,0-1000,0-3000/0-12,000 FPM
The series 640 features ¡¾2% accuracy with four field selectable ranges of 0-200, 0-1000, 0-3000 and 0-12,000 FPM.
The transmitter is easily installed with the mounting hardware supplied, including a split flange for securing the sensing probe in the duct. Requiring only 22-28 volts AC or DC for power it has a 4-20 mA output. The NEMA 13 housing is suitable for all indoor industrial institutional or commercial installations.
SPECIFICATIONS
General
Media
Air
Ranges
0-200, 0-1000, 0-3000, 0-12,000 FPM (field selectable: referenced to standard conditions)
Accuracy
(% of FS)
0-200 FPM Range
¡¾5% @32-180¡ÆF
¡¾9% @0-32¡Æ or 180-200¡ÆF
0-1,000, 0-3,000, 0-12,000 FPM Ranges
¡¾2% @32-180¡ÆF
¡¾6% @0-32¡Æ or 180-200¡ÆF
¡¾ 5% of full span output, 32¡Æ-180¡ÆF
¡¾ 7% of full span output, 0¡Æ-32¡ÆF & 180¡Æ-200¡ÆF
Electrical
Power Supply
22-28 VDC or VAC
Output Signal
4-20 mA DC
Loop Resistance
0-300¥Ø
Current Consumption
250 mA Maximum Warm-Up time: 3 to 5 minutes
Performance
Zero Output: 4 mA
Full Span output
20 mA
Environmental
Temperature Ranges: Dry Air Stream (Probe) 0 to 200¡ÆF Operating (Transmitter) 32¡Æ to 160¡ÆF
Storage
0¡Æ to 200¡ÆF
Mechanical
Weight
3 lbs. (includes probe and cable)
Probe length
12" insertion depth
Cable length
6 feet
Range Adjustment
protected switches
1 year warranty
CAT NO.
MODEL
DEscRIPTION
AVAIL
PRICE
DW33984
640-0
AIR VELOCITY TRANSMITTER
Yes
1,278,720
ML3814101
MEC24-1000
OPTIONAL 24V LINEAR POWER SUPPLY 1 AMP OUTPUT CURRENT FOR Air Velocity Transmitter with Hot Wire Sensor