Buy Dwyer 641-12, Series 641 Air Velocity Transmitter

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Options and Related Products

LED Display:: LED Display: No
Probe Length:: Probe Length: 12"

Series 641 Air Velocity Transmitter, 12" Probe Length

Explosion-proof, 0.5% Accuracy

The new Series 641 Air Velocity Transmitter is the ideal instrument for monitoring air flow. This transmitter uses a heated mass flow sensor which allows for precise velocity measurements at various flow rates and temperatures.

Features

Ranges to 15,000 FPM or 75 MPS
Easy Push Button Set-up
Compact Housing
4-20 mA Output
Digital Filter for Signal Damping

Applications

Exhaust Stack Flow Monitoring
Air Control in Drying Processes
HVAC Air Velocity Measurements
Fan Supply and Exhaust Tracking
Clean Room Fresh Air Supply
Ensure Proper Lab Hood Exhaust Flow Rates

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Return and Warranty

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Technical Details

Optional Accessories

Resources

Reviews

Service	Clean air and compatible, non-combustible gases
Probe Length	12"
Accuracy	3% FS Process gas: 32 to 122°F 4% FS Process gas: -40 to 32°F & 122 to 212°F
Response Time	Flow: 1.5 seconds to 95% of final value (output filter set to minimum)
Temperature Limits	Process: -40 to 212°F Ambient: 32 to 140°F
Pressure Limit	100 psi (6.89 bar) maximum
Humidity Limit	Non-condensing
Power Requirements	12-35 VDC, 10-16 VAC. 1.5 A rating required on supply due to initial power surge drawn by transmitter
Output Signal	4-20 mA, isolated 24V source, 3 or 4-wire connection
Output Filter	Selectable 0.5-15 (seconds)
Loop Resistance	600 ohms max
Current Consumption	300 mA max
Electrical Connections	Screw terminal
Process Connections	1/2" male NPT
Enclosure Rating	Designed to meet NEMA 4X (IP66) for non LED models only
Mounting Orientation	Unit not position sensitive. Probe must be aligned with airflow
Weight	12.6 oz
Agency Approvals	CE

Manufacturer List Price:

$788.60

Notes

* Free Ground Shipping within the continental U.S. only (excludes Alaska, Hawaii, PO Boxes and APO/FPO addresses).

Product Details

Service	Clean air and compatible, non-combustible gases
Probe Length	12"
Accuracy	3% FS Process gas: 32 to 122°F 4% FS Process gas: -40 to 32°F & 122 to 212°F
Response Time	Flow: 1.5 seconds to 95% of final value (output filter set to minimum)
Temperature Limits	Process: -40 to 212°F Ambient: 32 to 140°F
Pressure Limit	100 psi (6.89 bar) maximum
Humidity Limit	Non-condensing
Power Requirements	12-35 VDC, 10-16 VAC. 1.5 A rating required on supply due to initial power surge drawn by transmitter
Output Signal	4-20 mA, isolated 24V source, 3 or 4-wire connection
Output Filter	Selectable 0.5-15 (seconds)
Loop Resistance	600 ohms max
Current Consumption	300 mA max
Electrical Connections	Screw terminal
Process Connections	1/2" male NPT
Enclosure Rating	Designed to meet NEMA 4X (IP66) for non LED models only
Mounting Orientation	Unit not position sensitive. Probe must be aligned with airflow
Weight	12.6 oz
Agency Approvals	CE