8703 Mass Flow Meter

Brand: Burkert Fluid Control Systems
Does not ship to Virginia, United States

Mass flow meter are used in process technology for the direct measurement of the mass flow of gases. In case of volumetric flow meters, it is necessary to measure the temperature and the pressure or the density, because gases change their density or rather their volume depending on the pressure. 

The measurement of the mass flow, on the other hand, is independent of the pressure and temperature. 

The digital mass flow meter type 8703 uses a sensor on silicon chip basis located directly in contact with the gas. Due to the fact that the sensor is directly in the bypass channel a very fast response time of the MFM is reached. The actual flow is given over RS485-communication. 

Type 8703 can optionally be calibrated for two different gases, the user is able to switch between these two gases. This instrument communicates with master devices digitally, no further A/D conversions needed. 

The MassFlowCommunicator software can be used for parameterisation and diagnosis

Specifications

Accuracy

  • After 1 Minute Warm-Up Time: ± 0.3 % of Full Scale
  • After 1 Minute Warm-Up Time: ± 0.8 % of Reading

Ambient Temperature Range

  • -10° to 50° C (14° to 122° F)

Approvals & Certifications

  • CE

BSP Connection

  • G 1/4” Female

Communication

  • Digital
  • RS-232
  • RS-422
  • RS-485 (Half-Duplex or Full-Duplex)
  • USB

Consumption

  • Power Consumption: 5 W

Electrical Connectors

  • D-Sub 9-Pin Plug Connector

Electrical Contacts

  • Normally Closed
  • Normally Open

Enclosure, Body Material

  • Aluminum
  • Metal
  • Stainless Steel

Environmental Protection

  • Protection Class: IP40

Flow Rate

  • Nominal Flow Range: 0.01 to 80 LPM

Indication

  • LED Indication for Power, Limit & Error

Media

  • Air
  • Neutral Gasses

Mounting Position

  • Horizontal
  • Vertical

NPT Connection

  • 1/4” NPT Female

Operating Pressure

  • Maximum

Power Supply

  • 24 Vdc

Principle of Operation

  • Thermal, Calorimetric

Process Temperature

  • -10° to 60° C (14° to 140° F) with Oxygen
  • Gas: -10° to 70° C (14° to 158° F)

Relay Output

  • One Relay Output for Limit (Process Value Close to Full Scale Value): 1 A at 25 V, 25 VA

Repeatability

  • ± 0.1 % of Full Scale

Response Time

  • < 300 milliseconds

Seat / Seal Material

  • Seal: EPDM
  • Seal: FKM

Sensor Circuit

  • Residual Ripple: < 2 %

Tolerance

  • Voltage: ± 10 %

Turndown

  • 1:50

Documentation

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