Dwyer 641-6
SKU: CS324418MPN: 641-6Alternate Part #: 100515-30
641AVT CE 6 IN W/O DISPLAY

Product Details
The 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. The 641’s 16 field selectable ranges provides it the versatility to be selected for several air flow applications. The optional LED produces a complete, low-cost solution for local indication of air flow.
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
Attributes
| Accuracy | 3% FS Process gas: 32 to 122°F (0 to 50°C); 4% FS Process gas: -40 to 32°F & 122 to 212°F (-40 to 0°C & 50 to 100°C). |
| Agency Approval | CE. |
| Commodity Code | 1102 |
| Current Consumption | 300 mA max. |
| Display | 4-½ digit ½” red LED. |
| Electrical Connection | Screw terminal. |
| Enclosure Rating | Designed to meet NEMA 4X (IP66) for non LED models only. |
| Humidity Limit | Non-condensing. |
| Loop Resistance | 600 Ω max. |
| Mounting Orientation | Unit not position sensitive. Probe must be aligned with airflow. |
| Output Filter | Selectable 0.5-15 s. |
| Output Signal | 4 to 20 mA, isolated 24 V source, 3 or 4-wire connection. |
| Power Requirement | 12 to 35 VDC, 10 to 16 VAC. 1.5 A rating required on supply due to initial power surge drawn by transmitter. |
| Pressure Limit | 100 psi (6.89 bar) maximum. |
| Process Connection | ½” male NPT. |
| Resolution | 1 FPM, 0.01 MPS (10 FPM @ 10,000 and 15,000 FPM ranges). |
| Response Time | Flow: 1.5 s to 95% of final value (output filter set to min.). |
| Service | Clean air and compatible, non-combustible gases. |
Specifications
| SKU | CS324418 |
|---|---|
| MPN | 641-6 |
| Alternate Part # | 100515-30 |



