The electromagnetic Flow meter is composed of a sensor and converter, works on Faraday”s electromagnetic indication principle, it has a dual cavity housing providing ease of wiring while isolating the electronics from the environment. LDG series continues the use of low-frequency excitation method and multiform lining allowing this magnetic flow meter to be applied to an even greater range of applications.

Standard specifications

Measuring Range

The velocity range is 0.3m/s to 15m/s. The minimum measurable speed can be one percent(1%) of the full range.

Analog Output

Current output: Fully-isolated 0~10mA/4~20mA

Load resistance: O to 1.5k; 4~20mA, 0~750 at 4~20mA

Base error: Add minus 10uA on top of the measurement error

Frequency Output

Frequency output is proportional to the flow percentage of the full range. It Provides fully isolated transistor open collector frequency output ranged from 1 to 5000Hz, the external DC power supply should not exceed 35V and maximum collector current is 250mA.

Pulse output

The converter can output up to 5000cp/s pulse series, which is dedicated to external totalization. Pulse factor is defined as pulse width is selectable from 16ms, 33ms, 66mm, and so on. Photo-coupler isolated transistor open collector circuit is used for pulse output. The external DC power supply should not exceed 35V and maximum collector current is 250mA

Showing Flow Direction & Range

The converter is capable of measuring both forward and reverse flow and recognizing its direction. The converter output 0Vlow level for forward flow, while 12V high level for reverse flow. Alarm Output Two channel of photo-coupler isolated open collector circuit are used for alarm signal output. There are two alarm outputs: High limit alarm and low limit alarm. The external DC power supply should not exceed 35V and maximum collector current is 25OmA

Communication

• RS232C, RS485, HART, PROFIBUS, MODBUS
• The RS232C, RS485, HART, PROFIBUS, MODBUS Communication interface are embedded in the converter. Surge absorber is optional to protect the interface and converter.