LDMdrive

Low-power flow regulator with partly filled flow measurement

Flow measurement for partial filling in continuous operation

The robust flow measurement for partly filled pipes in combination with the knife gate valve with powerful low-power drive is characterised by its extremely low electrical energy requirement, which can also be operated with a battery for several days without sun or mains supply. The slide gate valve is controlled directly by the transmitter, which saves components and space.

Permanent connection to the control system ≤ 4G

The measurement and control data is transmitted directly to your process control system via the most common interfaces. The compact system impresses with its compact properties and the harmonised components used. The system is available in a shortened design with guaranteed accuracy, which is ensured by calibration in STEBATEC’s hydraulic laboratory. The maintenance opening makes it easy to clean the system. Factory commissioning, intuitive operation and commissioning instructions ensure efficient installation and commissioning.

Flexible in any operating situation

The LDMdrive is suitable for off-grid operation as well as for UPS operation with a mains connection. Self-sufficient operation is guaranteed by a storage battery and the simultaneous installation of a solar panel. This combination guarantees long operating times without interruption. The corresponding operating times, depending on the size of the LDMdrive, can be found in the tables.

Advantages of the LDMdrive

  • Up to nominal width DN250 with 1m², larger up to DN500 with 2m² panel area completely self-sufficient
  • One week of self-sufficient operation with storage battery (LxWxH 33x69x22cm); also suitable for mains and UPS operation
  • Thanks to the LDM flow measurement, the flow is measured even in dry weather and at the lowest fill levels
  • The gate valve control is integrated in the transmitter
  • Full control at the control system thanks to permanent connection via 4G mobile network
  • Complete data recording integrated in the transmitter and accessible via web interface
  • Reports contamination before measurement errors occur

Technical information

Running time per full battery charge

Nominal size DN150 DN150 DN200 DN200 DN250 DN250 DN300 DN300 DN350 DN350 DN400 DN400 DN500 DN500
Battery M/D¹ M/D/R² M/D¹ M/D/R² M/D¹ M/D/R² M/D¹ M/D/R² M/D¹ M/D/R² M/D¹ M/D/R² M/D¹ M/D/R²
120Ah 216h 90h 192h 80h 171.5h 72h 158h 65.5h 144.5h 60h 133.5h 55.5h 115.5h 48h
240Ah 432h 180h 384h 160h 343h 144h 316h 131h 289h 120h 267h 111h 231h 96h

Storage battery charging time with active flow measurement and data transmission

Nominal size DN150 DN150 DN200 DN200 DN250 DN250 DN300 DN300 DN350 DN350 DN400 DN400 DN500 DN500
Battery 120Ah 240Ah 120Ah 240Ah 120Ah 240Ah 120Ah 240Ah 120Ah 240Ah 120Ah 240Ah 120Ah 240Ah
Solar panel 1m² / 200Wp 24.3h 48.6h 24.6h 49.3h 25h 50h 25.3h 50.7h 25.8h 51.5h 26.1h 52.3h 27h 53.9h
2m² / 400Wp 11.5h 23h 11.6h 23.2h 11.7h 23.3h 11.8h 23.5h 11.9h 23.7h 11.9h 23.8h 12h 24.1h
3m² / 600Wp 7.5h 15.1h 7.6h 15.2h 7.6h 15.2h 7.7h 15.3h 7.7h 15.4h 7.7h 15.4h 7.8h 15.6h

¹ Calculation basis: While flow measurement and data transmission are active.
² Calculation basis: While flow measurement, data transmission and control (12/24h) are active.
The calculation for your LDMdrive is carried out on a customer-specific basis after the installation site has been recorded.
M = Measurement / D = Data transmission / R = Control operation / Battery dimensions LxHxW 120Ah 33x34x22cm / 240Ah 33x69x22cm

Technical specifications

Designation LDM partly filled flow measurement LDMdrive
Nominal size pipe DN150 to DN1200 DN150 to DN500
Power supply 24VDC
Rated power flow measurement, data transmission and actuator in idle position DN150 13W to DN500 25W
Rated power in normal operation DN150 64W to DN500 120W
Self-sufficiency Via photovoltaics and 24VDC storage battery
Connection Via mobile network ≤ 4G to any process control system
Installation and maintenance Easy to install and easy to clean via the maintenance opening

 

 

Let us advise you.

  • This field is for validation purposes and should be left unchanged.