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Frequency Monitors

Frequency Monitors FM Series Line Frequency Monitors are high quality, dependable 3-digit panel meters that will continuously monitor line (mains) frequency. Crystal reference-based for accuracy. Power for operating the instrument is obtained from the line being measured. The meter is supplied in the popular 1/8 DIN style case and comes with LED or LCD displays.
Specifications
Model Number FM-3TB FM-300TB FM-340TB
Ranges 45.0-99.9Hz 45.0-99.9Hz 45-450Hz
Display 0.56-in LED 0.6-in LCD 0.6-in LCD
Green, orange, or yellow LEDs
Accuracy ±0.1 Hz ±0.1 Hz ±1 Hz
Crystal Time Base 1 Sec 1 Sec 1 Sec
Update Rate (Rdg per Sec) 2 2 2
Operating Temperature Range 0°C to +50°C 0°C to +50°C 0°C to +50°C
Input Voltage /120 VAC 85 to 125 VAC 85 to 125 VAC 85 to 125 VAC
Input Voltage /240 VAC 170 to 250 VAC 170 to 250 VAC 170 to 250 VAC
Connection Terminal Block Terminal Block Terminal Block
Case Type 1/8 DIN 1/8 DIN 1/8 DIN
Weight (metric) 6.6 oz. (187g) 6.6 oz. (187g) 6.6 oz. (187g)
Data Sheets Data Sheet FM-3TB
FM-3TB/120
& FM-3TB/240		 Data Sheet FM-300TB
FM-300TB/120
& FM-300TB/240		 Data Sheet FM-340TB
FM-340TB/120
& FM-340TB/240
Diagrams
Frequency Monitor Schematic
OUR PRODUCTS:
Voltage/Current Meters
    PM Series
    RM Series
    X Series
Counters & Frequency
Frequency Monitors
Loop Meters
Signal Conditioners 		CONTACT:
Phone: (619) 521-2161
Email: sales@nonlinearsystems.com

Contact Us 		SEND REPAIRS TO:
Non-Linear Systems
4142 Adams Ave #103-542
San Diego, CA 92116

Copyright © 2022, Nonlinear Systems. All Rights Reserved.
Non-Linear Systems
Frequency Monitors


Frequency Monitor

FM Series Line Frequency Monitors are high quality, dependable 3-digit panel meters that will continuously monitor line (mains) frequency. Crystal reference-based for accuracy. Power for operating the instrument is obtained from the line being measured. The meter is supplied in the popular 1/8 DIN style case and comes with LED or LCD displays.
Specifications
  For best viewing, turn phone sideways.
Model Number FM-3TB FM-300TB FM-340TB
Ranges 45.0-99.9Hz 45.0-99.9Hz 45-450Hz
Display 0.56-in LED 0.6-in LCD 0.6-in LCD
Green, orange, or yellow LEDs
Accuracy ±0.1 Hz ±0.1 Hz ±1 Hz
Crystal Time Base 1 Sec 1 Sec 1 Sec
Update Rate (Rdg per Sec) 2 2 2
Operating Temperature Range 0°C to +50°C 0°C to +50°C 0°C to +50°C
Input Voltage /120 VAC 85 to 125 VAC 85 to 125 VAC 85 to 125 VAC
Input Voltage /240 VAC 170 to 250 VAC 170 to 250 VAC 170 to 250 VAC
Connection Terminal Block Terminal Block Terminal Block
Case Type 1/8 DIN 1/8 DIN 1/8 DIN
Weight (metric) 6.6 oz. (187g) 6.6 oz. (187g) 6.6 oz. (187g)
Data Sheets Data Sheet FM-3TB
FM-3TB/120
& FM-3TB/240		 Data Sheet FM-300TB
FM-300TB/120
& FM-300TB/240		 Data Sheet FM-340TB
FM-340TB/120
& FM-340TB/240
Diagrams
OUR PRODUCTS:
Voltage/Current Meters - PM Series
Voltage/Current Meters - RM Series
Voltage/Current Meters - X Series
Counters & Frequency
Frequency Monitors
Loop Meters
Signal Conditioners
CONTACT:
Phone: (619) 521-2161
Email: sales@nonlinearsystems.com

Contact Us
SEND REPAIRS TO:
Non-Linear Systems
4142 Adams Ave #103-542
San Diego, CA 92116

Copyright © 2022, Nonlinear Systems. All Rights Reserved.