4190, Portable Vibration Meter
- Rotary "Accel. Select" switch to select 10 mV/g or 100 mV/g accelerometers
- Switched selected F.S. ranges of 2, 20 and 50 g's full scale
- Frequency Response ±3db, 20 to 5000 Hz
- Large digital front panel meter
- Low battery red LED indicator
- Accelerometer connected green LED indicator
- Operation from two 9 volt batteries
- Front panel "Bias Test" switch to measure the bias voltage of the IEPE accelerometer
- An "Output" jack is provided to allow readout of the accelerometer output signal for monitoring of this signal with an oscilloscope or other readout instrumentation
The Dytran model 4190 is an all solid state, battery powered. hand-held vibration meter featuring a large digital panel meter. It converts the vibration signal from a 10 mV/g or a 100 mV/g IEPE sensor to the peak value of the vibration signals generated by these sensors.
Units are powered by two 9 Volt transistor radio batteries. Model 4190 powers the IEPE accelerometer (10 or 100 mV/g sensitivity) with 2 mA of current at +18 Volts compliance. The signal from the accelerometer is fed to a low-current operational amplifier gain stage which selects the gains necessary to use a 10 or 100 mV/g accelerometer. The next stage is a ranging stage which selects full scale ranges of 2g’s, 20g’s and 50g’s full scale (peak) vibration ranges. The third stage, an AC/DC converter stage, converts the vibration signal from the accelerometer to the equivalent DC peak value and displays this signal on the front panel digital voltmeter.
Additional circuitry provides low battery indication in the form of a red LED on the front panel and a “Normal Operation” green LED which indicates that the accelerometer is connected and is performing normally.
Another feature of the Dytran model 4190 is the front-panel mounted “Bias-Test” push-button. When this switch is depressed, the front panel meter displays the voltage bias of the IEPE accelerometer connected to the 4190. This voltage, which may vary dependant on the IEPE accelerometer chosen, will be in the range of 9 to 12 Volts DC for normal operation. This verifies that the accelerometer is powered and is behaving normally. Compare this reading with the manufacturer supplied data sheet for the bias voltage supplied by the two batteries, in series (approximately 18 VDC).
| Input Type | Piezoelectric |
| No. of Inputs | 1 |
| Excitation | 2 mA |
4190, Vibration Meter Datasheet |
- Graphical trend display
- Main frequency display
- Electronic identification of measurement points with VMID points via the sensor base
- USB interface, PC software for measuring point management to MIMOSA convention and measuring data archiving
- Vibration Velocity; 0.1 - 1000 mm/s; 2 - 100 Hz; 2 - 1000 Hz; 10 - 1000 Hz
- Vibration displacement; 0.01 - 60 mm; 3 - 60 Hz; 2 - 300 Hz; 3 - 200 Hz; 2 - 1000 Hz; 10 - 1000 Hz
| Input Type | Piezoelectric |
| No. of Inputs | 1 |
| Interface | USB |
| Channel number | 1 |
| Measuring range acceleration | 0.1 - 240 m/s² |
| Measuring range velocity | 0.1 to 1000 mm/s |
- Condition monitoring of rotating and reciprocating machines to ISO 20816-1, ISO 10816-6, IEC 60034-14, etc.
- Electronic identification of measurement points with VMID points via the sensor base
- USB interface, PC software for measuring point management to MIMOSA convention and measuring data archiving
- Spectral analysis (FFT) for acceleration and velocity
- General vibration measurement in laboratory and industry
- Vibration Velocity; 0.1 - 1000 mm/s; 10 - 1000 Hz
| Input Type | Piezoelectric |
| No. of Inputs | 1 |
| Interface | USB |
| Measuring range acceleration | 0.1 - 240 m/s² |
| Measuring range velocity | 0.1 to 1000 mm/s |
| Measuring range displacement | 0.01 - 60 mm |