The Line Frequency Monitor is a precise and reliable microcontroller-based instrument designed for accurate measurement of main line frequency. With an accuracy of more than 0.02%, it ensures grid stability and optimizes power generation and synchronization in power generation and load dispatching centers, process industries, and other critical environments. Equipped with advanced accuracy capabilities of up to 2 decimal places (or up to 3 decimal places for the made-to-order version), this essential tool provides precise frequency monitoring for efficient operations.

The 7-segment LED display, available in sizes from 4 to 12 inches, offers easy readability of real-time frequency measurements. Its robust design, wide operating voltage range, and suitability for power plants, manufacturing facilities, and research laboratories make it the ideal solution for accurate line frequency monitoring.

Category:

Description

Features
• Measures line frequency accurately up to 2/3 decimal places
• No calibration required. Easy plug and play operation
• Large display visible from distance
• Non blinking display

Industry Use Case

1. Power Generation and Distribution: Ensuring grid stability and accuracy by monitoring line frequency in power generation and distribution processes.
2. Manufacturing and Industrial Automation: Enabling precise synchronization and timing for machinery coordination and process control in manufacturing and industrial automation.
3. Research and Laboratory Applications: Providing accurate frequency measurements for instrument calibration and studying frequency effects in scientific experiments.

Applications
• Frequency of power generation turbine
• Power Plant Control Rooms
• Power Distribution Centers
• Verify accuracy and stability of synchronous motors and clocks
• Monitor frequency of mobile and portable generation under load
• Continuously monitor frequency in laboratories during experiments and calibration processes

Specifications
Can be made to order as per user’s requirement.

ParameterSpecification
LFM0XLFM5X
Digits45
Range40.00-60.00 Hz40.000-60.000 Hz
Resolution 0.01 Hz0.001 Hz
Input SignalAuto from Power Supply 4-20 mA (On Order)Auto from Power Supply 4-20 mA (On Order)
Display Height½ Inch, 1 Inch, 2 Inch, 4 Inch, 6 Inch, 8 Inch, 12 Inch Refer Display Size Table½ Inch, 1 Inch, 2 Inch, 4 Inch, 6 Inch, 8 Inch, 12 Inch Refer Display Size Table
TypeDIN Mounted / JumboDIN Mounted / Jumbo
Display ColorRedRed
Output Signal (Optional)MODBUS RS485 MODBUS TCP/IPMODBUS RS485 MODBUS TCP/IP
Power Supply 230 V AC +/- 10% 110V AC +/- 10% (On Order) 230 V AC +/- 10% 110V AC +/- 10% (On Order)
Mounting Wall Mounting / Roof HangingWall Mounting / Roof Hanging
IP RatingIP54 / IP65IP54 / IP65
EnclosureMS Powder CoatedMS Powder Coated

Display Specifications

ModelDigits Display HeightViewing DistanceMounting Type Photo
LFM005412.5 mm / 0.5 Inch5 meterDIN Standard Enclosure
LFM01425 mm / 1 Inch10 meterDIN Standard Enclosure
LFM02 / LFM324 / 550 mm / 2 Inch25 meterDIN Standard Enclosure
LFM04 / LFM344 / 5100 mm / 4 Inch75 meterWall Mounting
LFM06 / LFM364 / 5150 mm / 6 Inch100 meterWall Mounting
LFM08 / LFM384 / 5200 mm / 8 Inch125 meterWall Mounting

Model Wise Specification
Common for all

ParameterSpecification
DigitsModel Specification Table
RangeModel Specification Table
ResolutionModel Specification Table
Input SignalAuto from Power Supply 4-20 mA (On Order)
Display HeightModel Specification Table
Viewing DistanceModel Specification Table
Display ColorRed
Power Supply 230 V AC +/- 10%
MountingModel Specification Table
IP RatingIP54
Enclosure MS Powder Coated

Model Specification Table

ModelDigits RangeResolutionDisplay Height Viewing Distance Mounting Type Photo
LFM0054 40.00-60.00 Hz0.01 Hz12.5 mm / 0.5 Inch5 meterDIN Standard Enclosure
LFM014 40.00-60.00 Hz 0.01 Hz25 mm / 1 Inch10 meterDIN Standard Enclosure
LFM024 40.00-60.00 Hz0.01 Hz50 mm / 2 Inch25 meterDIN Standard Enclosure
LFM044 40.00-60.00 Hz0.01 Hz100 mm / 4 Inch75 meterDIN Standard Enclosure
LFM0054 40.00-60.00 Hz0.01 Hz12.5 mm / 0.5 Inch5 meterWall Mounting
LFM064 40.00-60.00 Hz0.01 Hz150 mm / 6 Inch100 meterWall Mounting
LFM084 40.00-60.00 Hz0.01 Hz200 mm / 8 Inch125 meterWall Mounting
LFM52540.000-60.000 Hz0.001 Hz50 mm / 2 Inch25 meterDIN Standard Enclosure
LFM545 40.000-60.000 Hz0.001 Hz100 mm / 4 Inch75 meterWall Mounting
LFM565 40.000-60.000 Hz0.001 Hz150 mm / 6 Inch150 mm / 6 InchWall Mounting
LFM585 40.000-60.000 Hz0.001 Hz200 mm / 8 Inch125 meterWall Mounting

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