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Add the Series 641RM Air Velocity Transmitter with Remote Probe to your store or catalog  
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Dwyer Air Velocity Transmitter with Remote Probe, Series 641RM

Series 641RM Air Velocity Transmitter with Remote Probe

Brand: Dwyer Instruments, LLC
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The SERIES 641RM features the same highly accurate heated mass flow sensor as the Series 641, with a remote probe construction.

The units 6´ cable which connects the sensing probe with the electronic enclosure allows the enclosure to be mounted where it can be more easily accessed.
Features
  • Ranges from 250 FPM (1.25 MPS) to 15,000 FPM (75 MPS)
  • Optional Bright LED Display
  • Easy Push Button Set-up
  • Compact Housing
  • 4 to 20 mA Output
  • Digital Filter for Signal Damping

1 - 4 of 4 Part Numbers
641RM-12
641RM-12
DWYER Air Velocity Transmitter, without LED Display.
  • LED Options - No LED
  • Certificates - None
641RM-12-LED
641RM-12-LED
DWYER Air Velocity Transmitter, with LED Display.
  • LED Options - 4-1/2" Digit 1/2" Red LED
  • Certificates - None
641RM-12-LED-NIST
641RM-12-LED-NIST
  • LED Options - 4-1/2" Digit 1/2" Red LED
  • Certificates - NIST Traceable Calibration Certificate
641RM-12-NIST
641RM-12-NIST
  • LED Options - No LED
  • Certificates - NIST Traceable Calibration Certificate
1 - 4 of 4 Part Numbers

View_Details

Specifications

Brand

Accuracy

  • 3 % of Full Scale Process Gas: 0° to 50° C (32° to 122° F)
  • 4 % of Full Scale Process Gas: -40° to 0° C & 50° to 100° C (-40° to 32° F & 122° to 212° F)

Ambient Temperature Range

  • 0° to 60° C (32° to 140° F)

Approvals & Certifications

  • CE

Cable Length

  • 6 feet (1.82 m)

Consumption

  • 300 mA - Max.

Display

  • 4-1/2-digit, 1/2" Red LED

Electrical Connectors

  • Screw Terminal

Flow Rate

  • 250 to 15,000 fpm (1.25 to 75 mps)

Loop Resistance

  • 600 ohms, Max.

Media

  • Clean Air & Compatible
  • Non-Combustible Gases

Mounting

  • Duct Mount

NACE & NIST

  • NIST Traceable Calibration Certificate

NPT Connection

  • 1/2" NPT Female

Output

  • 4-20 mA, Isolated 24 V Source, 3 or 4-Wire Connection

Power Requirement

  • 10-16 Vac
  • 12-35 Vdc

Process Temperature

  • -40° to 100° C (-40° to 212° F)

Response Time

  • 0.5 to 15 seconds
  • 1.5 seconds to 95 % of Final Value

Seat / Seal Material

  • PTFE

Sensor / Probe Diameter

  • 12" (304.8 mm)
  • 5/16" (0.79 cm)

Supply Pressure

  • psi: 100 (kPa: 689.5, bar: 7)

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

Documentation

Approvals

Catalogs

Manuals

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