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Red LED Frequency/Counter Panel Meter

Brand:| Model: ME-FM11421
Overview
Quickly and easily measure signal frequency with this panel meter.
Highlights
  • Measures 20 to 9,999 Hz accurately
  • Works with both sine and square waves
  • Counts square wave pulses
  • Great for testing amplifier and pre-amplifier output
  • Two inputs
Part # 
320-538
Weight: 0.25 lbs.  
IN STOCK
List Price$39.99
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Part # 320-538
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Product Details

Red LED Frequency/Counter Panel Meter

The perfect panel meter for the DIY audio enthusiast. Measure and verify either sine wave (or square wave) frequency or square wave pulses with this LED frequency/counter panel meter. Switch between counter and frequency modes, and input 1 or input 2 with a flip of the on-board dip switch. The wide working voltage range and small size allows for use in automotive environments, while the 20 to 9,999 Hz readout offers measurement of 90% of the content in the audio band. A unique feature, when in the 0 to 9,999 pulse count mode, is manual reset with the wave of your hand in front of the display.

Specifications: • Power requirements: 7 to 26 VDC • Current draw: 50 mA (@ 12 VDC) • Signal input: 5 to 12 V • Responding rate: 1 second • Frequency range: 20 to 9,999 Hz • Frequency accuracy: 0.5% • Display resolution: 0.01 Hz (20 to 99.99 Hz), 0.1 Hz (100.0 to 999.9 Hz), 1 Hz (1,000 to 9,999 Hz) • Counting range: 0 to 9,999 • Dimensions: 79 mm (3.11") W x 42 mm (1.65") H x 25 mm (0.98") D.



Red LED Frequency/Counter Panel Meter
  • BrandParts Express
  • ModelME-FM11421
  • Part Number320-538
  • UPC844632093340
  • Product CategoryPanel Meters
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight0.25 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Red LED Frequency/Counter Panel Meter
Red LED Frequency/Counter Panel Meter is rated 4.3333 out of 5 by 3.
Rated 4 out of 5 by from NEED HELPUsing a frequency generator, inserting the range of what this will handle, output must be at 0 DB. It works and is responsive to any frequency shift. However, I need this meter to measure the output of voltage regulated generators that produce 120 VAC where the frequency should be at 60 HZ +/-. I'm using a low voltage step-down transformer, from 120 VAC to 4.5VAC to meet the meters range and find this meter will lock on to the first hit, i.e. 60 HZ and never change.I'm testing the same frequency as in the home with a Fluke multimeter on the same leads. That meter fluctuates constantly. In order to get a constant reading with this Sure meter, one must repeatedly connect and remove the test lead which will then display the latest measurement.The meter works, I'm just not sure why it doesn't read low voltage AC frequency when compared to a different meter. Do I not have enough gain, too much gain, somethings missing and I need help. These meters are perfect for my project and would love to use them. Any help appreciated.
Date published: 2013-08-26
Rated 5 out of 5 by from Good counterI bought this for the proce to try to expand it to a higher range. I haven't finished the prescaler yet, but the counter works great, and matches the readout on my regular frequency counter. So far, I've used it to 1 MHz using a divide by ten counter set-up. I'm owrking on a signal conditioner front-endto try to push it to 100 MHz.
Date published: 2012-02-19
Rated 4 out of 5 by from Does the jobI bought this as an add on to my old home-brew function generator. I could not get the 'isolated input' to work at all, but the other input works fine when connected to the square wave output. The display is clear and bright, for the price you can't beat it.
Date published: 2012-01-17

Product Q&A

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Red LED Frequency/Counter Panel Meter

need help

Using a frequency generator, inserting the range of what this will handle, output must be at 0 DB. It works and is responsive to any frequency shift. However, I need this meter to measure the output of voltage regulated generators that produce 120 VAC where the frequency should be at 60 HZ +/-. I'm using a low voltage step-down transformer, from 120 VAC to 4.5VAC to meet the meters range and find this meter will lock on to the first hit, i.e. 60 HZ and never change.I'm testing the same frequency as in the home with a Fluke multimeter on the same leads. That meter fluctuates constantly. In order to get a constant reading with this Sure meter, one must repeatedly connect and remove the test lead which will then display the latest measurement.The meter works, I'm just not sure why it doesn't read low voltage AC frequency when compared to a different meter. Do I not have enough gain, too much gain, somethings missing and I need help. These meters are perfect for my project and would love to use them. Any help appreciated.
Asked by: RM1234
You need a "TRUE RMS READING" voltmeter to work on a generator. Generators--unless they are high end--usually send out a "SQUARE WAVE" 60 cycles per second. Or a "STEPPED SQUARE WAVE". They work great on power tools but are limited where electronics are concerned. A "TRUE SIGN WAVE" generator will work pretty well for your project--except for the cost. Try a different volt meter that reads RMS.That is the lowest cost option.
Answered by: Joe from San Francisco
Date published: 2013-09-03

I'm building a pickup winder, will this led panel work as a wind counter with a reed switch or is it only a frequency counter?

Asked by: t.tucker
Unfortunately this will only work as a frequency counter.
Answered by: MattP
Date published: 2013-06-10

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