Flow Computer GDR 1530


The actual gas quantity of the gas flow meter GD 300 (Ex) / GD 500 (Ex) is calculated by the 1-channel flow computer GDR 1530. 

On an hourly or minutely basis, the current gas quantity can be displayed in cubic meters or liters. 


  • 4-line display with 20 characters per line

  • Multilingual menu (English, German, French, Spanish, Italian, Bulgarian, Polish, …)

  • Complete device configuration via keypad, no additional software required

  • Integrated WLAN hotspot with full device access via web browser

  • Optional LAN interface for integration into the plant network

  • Security code to protect configuration

  • Timestamped logging of important actions in the system logbook (device start, sensor failure, overrange, etc.)

  • UV-resistant polycarbonate housing material, protection class IP 65

  • Persistent counter readings for up to 5 years

  • Integrated real-time clock,
    battery buffered for 5 years

  • Standardization according to DIN 1343, DIN 6358, DIN ISO 2533, DIN 102/ISO 1-1975

  • Freely scalable current output for output of actual flow rate

  • Adjustable pulse weighting
    (0.1, 1 or 10 or 100 m³ per pulse)

  • Optional data transmission via Modbus RTU and Modbus TCP 


The totalizer of the total quantity can be displayed either in cubic meters or in liters. The counter can have 9 digits up to 999 million cubic meters. The resolution is 0.1 liters.

2 different inputs are available for the input signal.

Gas flow meter GD 300 (Ex)/ GD 500 (Ex):

  1. Direct connection of the platinum wire sensor (NON-ATEX)
  2. Connection of the HB 300 Ex (ATEX area)
GD 300 mit Wafer-Anschluss und GDR 1530 im NON-ATEX Bereich

The current output 0(4) – 20 mA indicates the current flow in the form of operating or standard cubic meters.

Two limit values ​​are available for limit value monitoring.

Flow rate, device status or error messages can be passed on to superior PLC system via 2 semiconductor relays.

In addition to a pt100 input, the devices also have mA inputs for pressure and temperature sensors as well as an integrated barometric sensor for recording the atmospheric pressure.

Based on the operating volume determined by the connected gas flow meter and the measured values for pressure and temperature, the volume corrector calculates the standardized volume. The calculation of the standardization can be done according to the standards DIN 1343, DIN 6358, DIN ISO 2533 or DIN 102/ ISO 1-1975.

The Modbus RTU and Modbus TCP bus systems are available as an option for data transmission. 

Optional LAN interface for integration into the plant network

All parameter settings/configurations can be carried out using the keys and the display or with a web browser via the integrated WLAN hotspot.



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