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Type 8710 controls the mass flow of gases through a sensor element which is not in direct contact with the gas itself. 

The measured value provided by the sensor will be compared in the digital control electronics with the predefined set point according to the signal; if a control difference is present, the control value output to the proportional valve will be modified using a PI control algorithm. 

In this way, the mass flow can be maintained at a fixed value or a predefined profile can be followed, regardless of pressure variations or other changes in the system. The control element, a proportional valve working at low friction, guarantees a high sensitivity and a excellent control characteristics of the unit. 

The Mass Flow Communicator software can be used for parameterization and diagnosis.

Specifications

Accuracy

  • ± 0.3 % of Full Scale after 30 minutes Warm-Up Time
  • ± 1.5 % of Reading after 30 minutes Warm-Up Time

Ambient Temperature Range

  • -10° to 50° C (14° to 122° F)

Applications

  • Environmental Technology
  • Gas Dosing
  • Gas Production Processes
  • Heat Treatment
  • Material Coatings
  • Melting Treatment

BSP Connection

  • G 1/4” Female

Communication

  • DeviceNet Bus
  • Digital
  • FOUNDATION Fieldbus, CANopen
  • Modbus RTU
  • PROFIBUS DP
  • RS-232
  • RS-422
  • RS-485
  • USB

Consumption

  • Power Consumption: Max.

Electrical Connectors

  • D-Sub 15-Pin Connector
  • PROFIBUS-DP, DeviceNet & CANopen: Socket 5-Pin M12 Socket

Electrical Contacts

  • Normally Closed
  • Normally Open

Enclosure, Body Material

  • Metal
  • Plastic
  • Polycarbonate
  • Stainless Steel

Environmental Protection

  • Protection Class: IP40

Flow Rate

  • Control Valve: 0.00006 to 0.09 m³/hour (Kvs Value)
  • Full Scale Ranges: 0.005 to 15 LPM

Function

  • Close-Tight

Indication

  • LED Indication for Power, Limit (with Analog Signals) Communication (with Fieldbus) & Error

Input Impedance

  • 20 kiloohms (Voltage)

Input Signal

  • 0-10 V
  • 0-20 mA
  • 0-5 V
  • 4-20 mA

Media

  • Air
  • Gas
  • Neutral Gasses

Mounting Position

  • Horizontal
  • Vertical

NPT Connection

  • 1/4” NPT Female

Operating Pressure

  • Maximum

Orifice Size

  • Control Valve: 0.05 to 2 mm

Output

  • 0-10 V
  • 0-20 mA
  • 0-5 V
  • 4-20 mA
  • Maximum

Output Load

  • Maximum

Power Supply

  • 24 Vdc

Process Temperature

  • -10° to 60° C (14° to 140° F) for Oxygen
  • -10° to 70° C (14° to 158° F)

Ratio

  • Control Range 1:50

Relay Output

  • One Relay Output: 1 A at 25 V, 25 VA

Repeatability

  • ± 0.1 % of Full Scale

Response Time

  • Settling Time: < 3 seconds

Seat / Seal Material

  • Seal: EPDM
  • Seal: FFKM
  • Seal: FKM

Sensor Circuit

  • Residual Ripple: < 2 %

Tolerance

  • Voltage: ± 10 %

  • Heat treating
  • Melting treatment
  • Environmental technology
  • Material coating

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