Starting at $788.60USD
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Dwyer

641RM Air Velocity Transmitter with Remote Probe

In Stock *

Remote probe construction allows for remotely mounting the electronic enclosure for easier accessibility

Starting at
$788.60USD
Some configurations are in stock for immediate delivery!
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641 RM Air Velocity Transmitter with Remote Probe 02558

The Series 641RM features the same highly accurate heated mass flow sensor as the Series 641, with a remote probe construction. The units 6 ft cable which connects the sensing probe with the electronic enclosure allows the enclosure to be mounted where it can be more easily accessed.

• Output signal conditioning with digital filtering
• Install in tight spaces with compact design
• Easy setup with on-board buttons
ServiceClean air and compatible, non-combustible gases
Accuracy3% FS process gas: 32°F - 122°F (0°C - 50°C);
4% FS process gas: -40°F - 32°F and 122°F - 212°F (-40°C - 0°C and 50°C * 100°C)
Response TimeFlow: 1.5 s to 95% of final value (output filter set to minimum)
Temperature LimitsProcess: -40°F - 212°F (-40°C - 100°C).
Ambient: 32°F - 140°F (0°C - 60°C)
Pressure Limit100 PSI(6.89 Bar) maximum
Humidity LimitNon-condensing
Power Requirements12 VDC - 35 VDC, 10 VAC - 16 VAC. 1.5 A rating required on supply due to initial power surge drawn by transmitter
Output Signal4 - 20 mA, isolated 24 V source, 3 or 4-wire connection
Output FilterSelectable 0.5 s - 15 s
Loop Resistance600 Ω max
Current Consumption300 mA max
Electrical ConnectionsScrew terminal
Mounting OrientationUnit not position sensitive. Probe must be aligned with airflow
Weight13.2 oz (374.26 g)
Cable Length6 ft (1.82 m)
Probe Length12 in (30.48 cm) standard
Probe Diameter5/16 in (0.79 cm)
Display4-1/2 digit 1/2 in red LED (641RM-12-LED model only)
Resolution1 FPM, 0.01 MPS (10 FPM @ 10,000 and 15,000 FPM ranges) (641RM-12-LED model only)
Weight13.9 oz (394.16 g)
Weight13.9 oz (394.16 g)

• Exhaust stack flow monitoring
• Air control in drying processes
• HVAC air velocity measurements
• Fan supply and exhaust tracking
• Clean room ventilation monitoring
 

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