HJLD series electromagnetic flowmeterDetailed product description：

The HJLD series electromagnetic flowmeter can be used to measure the volumetric flow rate of conductive liquids in closed pipelines. Widely used for flow measurement and control in industrial and agricultural production processes such as petrochemicals, steel metallurgy, water supply and drainage, water conservancy irrigation, water treatment, environmental wastewater measurement and control, papermaking, pharmaceuticals, food, etc.

Technical performance indicators

The HJLD series electromagnetic flowmeter is divided into two structural forms: integrated and separated. Can be used in designated explosion-proof locations. The sensor has 7 different electrode materials and 4 different lining materials to choose from.
1. Execution standard: JB/T9248-1999
2. Maximum flow velocity: 15m/s
3. Nominal diameter: DN3、6、10、15、20、25、32、40、50、65、80、100、150、200、250、300、350、400、450、500、600、700、800、900、1000、1200、1400、1600、1800、2000
4. Accuracy: 0.5%, 0.2%
5. Nominal pressure: 4.0MPa (DN10~150)
1.6MPa（DN200~600）
1.0MPa（DN700~1200）
0.6MPa（DN1400~2000）
Other specifications and standards can be customized according to user requirements.
6. Converter performance:
Power supply: single-phase AC power supply 85~265V, 45~63Hz, power less than 20W; DC power supply 11~40VDC.
Converter display and programming operation: Four thin film buttons can be used to set and select all parameters, and the converter can also be programmed using an external controller or PC (RS485, RS232); High definition backlit LCD display; Air traffic control inspection; Self diagnostic function.
Digital communication: RS485, RS232, MODBUS, REMOTE, with lightning protection.
7. Output signal
Current output: bidirectional two-way, fully isolated 0-10mA/4-20Ma; Load resistance: 0~10mA is 0~1.5k Ω, and 4~20mA is 0~750 Ω.
Frequency output: forward and reverse flow output, with an upper limit of output frequency that can be set within the range of 1-5000Hz. Bipolar output of transistor collector with photoelectric isolation. The external power supply should not exceed 35V, and the maximum collector current when conducting is 250mA.
Pulse output: forward and reverse flow output, with an output pulse upper limit of up to 5000cp/s. Pulse equivalent of 0.001L~1.0
m³/cp。 The pulse width is automatically set to 20ms or square wave. Open circuit output of transistor collector with photoelectric isolation. The external power supply should not exceed 35V, and the maximum collector current during conduction is 250mA.
Flow indicator output: This flowmeter can measure the flow rate of fluid in both directions and determine the direction of fluid flow. When displaying forward flow, output a high level of+10V, and when displaying reverse fluid flow, output a low level of 0V.
Alarm output: Two transistor collector open circuit alarm outputs with photoelectric isolation. The external power supply is not greater than 35V, and the maximum collector current when conducting is 250mA. Alarm status: fluid empty pipe, excitation disconnection, flow rate exceeding limit.
Damping time: selectable in stages between 0 and 100 seconds.