Arthur Grillo: Differential pressure controller DPC200-EP

With measuring control mode for differential pressure and flow rate
The “Approved Controller” combines tried and proven low-pressure measurement technology with the control engineering standards of ebm‑papst.

Arthur Grillo GmbH has many decades of experience in the field of low pressure measurement and developing innovative, finely tuned transmitters with PI control function for the smallest differential pressures.

The differential pressure determined by the electromechanical measuring principle is the output variable for demand-oriented sensor and control tasks in conjunction with GreenTech EC fans from ebm‑papst.

DPC200 differential pressure sensor-EP

In sensor mode, the DPC200-EP provides a linear output signal for the measured differential pressure, or optionally a square root output signal corresponding to the calculated volume flow.

In addition to sensor operation, the DPC200-EP also fulfills control tasks, whereby fans can be controlled directly via the control variable. All parameters can be set directly in the device to achieve the desired control behavior.

As an "approved controller", the DPC200-EP offers the following basic features:

  • Measuring ranges optionally
    0...50 Pa with DPC200-EP50
    0...100 Pa with DPC200-EP100
    0...200 Pa with DPC200-EP200
    0...500 Pa with DPC200-EP500
    0...1000 Pa with DPC200-EP1000
    0...2000 Pa with DPC200-EP2000
    0...4000 Pa with DPC200-EP4000
    0...6000 Pa with DPC200-EP6000
  • Control mode or measuring mode selectable
  • Analog output 0...10 V, with adjustable min / max threshold in control mode
  • 2 setpoints can be set in the device
  • PI algorithm with separate input of the P and I parameters
  • Switchable measured variables (differential pressure or volume flow)
  • Selectable units (Pa / m³/h or InH20 / cfm)
  • Control behavior "Positive/heating" or "Negative/cooling"
  • Volume flow calculation after entering a k-factor
  • Supply voltage 10...30 Vdc (10mA) / 24 Vac
  • Compact plastic housing IP65

Differential pressure controller / volume flow controller DPC200-MODBUS

The DPC200-MOD is a precise differential pressure sensor that transmits measurements for pressure and volume flow. It has integrated PI control logic, which plays an important role in decentralized control loops by continuously regulating pressure and air flow.

The sensor is also equipped with a Modbus RTU interface, which can be used for the digitalization of industrial processes. All device parameters can be read or written via this interface.

A 0...10 V signal output is available for direct analog processing. This signal can be configured as a linear / square root measurement signal or as a manipulated variable of the closed control loop. The sensor is used in air conditioning technology, for example to control fans, maintain room pressure or monitor filters.

As an "approved controller", the DPC200-MOD offers the following basic features:

  • Measuring ranges optional:
    0...50 Pa (0.5 mbar)
    0...100 Pa (1 mbar)
    0...500 Pa (5 mbar)
    0...1000 Pa (10 mbar)
    0...2000 Pa (20 mbar)
    0...4000 Pa (40 mbar)
    0...6000 Pa (60 mbar)
  • Electromechanical diaphragm measuring system
  • Configuration via Modbus communication
  • Selectable measurements (differential pressure or volume flow)
  • Selectable units (Pa / m³/h or InH20 / cfm)
  • Selectable operating mode: Control mode or measuring mode
  • Control mode with adjustable parameters: setpoint, maximum output voltage, P and I parameters for PI algorithm, direct or inverse control action
  • Adjustable k-factor for volume flow calculation
  • Analog output 0...10 V
  • Supply voltage 24 Vdc / 24 Vac
  • Compact plastic housing IP65

Differential pressure sensor DS85

The differential pressure sensors of the DS85 series measure low differential pressures of non-aggressive gases, especially air. They are used in air conditioning and ventilation technology to monitor fans, room pressure and filters.

The differential pressure to be measured acts on a silicone diaphragm and deflects it against a measuring spring. The deflection is converted into an electrical output signal by a differential transformer and evaluation electronics.

The DS85 can be connected directly to ebm‑papst EC centrifugal fans with integrated electronics or a suitable controller with a suitable power supply and a 0...10 V input. When used with an inlet ring that has its own pressure tapping, the volume flow can be calculated using the differential pressure.

As an "approved controller", the DS85 offers the following basic features:

  • Measuring ranges from 0...50 Pa to 0...10,000 Pa for example:
    0...50 Pa with DS85-50
    0...200 Pa with DS85-200
    0...500 Pa with DS85-500
    0...1000 Pa with DS85-1000
  • Analog output 0...10 V or 4...20 mA
  • Supply voltage 24 Vdc / 24 Vac
  • Compact plastic housing, protection class IP65

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