APSU01 Portable Power Supply for IEPE Sensors
- Manufacturer: Monitran
- Category: Handheld Equipment, INSTRUMENTATION
The portable power supply Monitran MTN/APSU01 It is a signal conditioning unit specifically designed to provide the constant current required for the operation of industrial accelerometers of the type IEPE (Integrated Electronics Piezo-Electric). This device acts as a critical interface in field condition monitoring applications, allowing high impedance sensors to be connected to standard analysis instruments, such as data collectors, oscilloscopes, or multimeters, which lack integrated power for piezoelectric transducers.
Technically, the APSU01 incorporates a low-noise decoupling circuit that preserves the integrity of the dynamic vibration signal, ensuring that the captured data accurately reflects the machine's mechanical behavior. Its modular design allows for configurations of 1 to 4 independent channels, facilitating multi-axial analysis or simultaneous monitoring of multiple measurement points without cross-interference. Housed in a heavy-duty ABS enclosure with industrial-grade protection, it is the standard equipment for maintenance engineers requiring complete mobility without reliance on mains power.
The unit operates on two standard 9V (PP3) batteries, providing approximately 10 hours of operating time. It includes a front LED indicator that monitors the battery status, ensuring the sensor always operates at its correct bias point to prevent distortion or clipping of the analog output signal.
- Portable battery-powered power supply Ideal for inspection routes and spot diagnostics.
- Low-noise electronics for a pure, decoupled vibration signal.
- Flexible configuration up to 4 channels for complex machinery analysis.
- LED status indicator to ensure the linearity of the measurement.
Technical Frequently Asked Questions
Yes, the equipment follows the IEPE industry standard (also known as ICP® or LIVM), so it can power any vibration sensor that requires a constant current source of 4mA nominal.
2. What type of connectors do you use for input and output?
The equipment can be factory configured with front BNC connectors for quick connection or with cable glands for temporary wired installations, adapting to the available analytical instrumentation.
3. How does the battery level affect the measurement?
If the batteries drop below their critical voltage, the bias point of the IEPE sensor could shift, causing signal clipping at vibration peaks. The LED indicator ensures the technician knows when to replace the batteries to maintain accuracy.
Properties
| Feature | Technical Specification |
| Entry Type | IEPE Accelerometer (Constant Current) |
| Exit Signal | Analog (mV/g) Amplified and Decoupled |
| Number of Channels | 1, 2, 3 or 4 (Selectable upon order) |
| Power Supply | 2x 9V Batteries (PP3) / External DC Option |
| Typical Autonomy | 10 Hours (Continuous Use) |
| Connectivity | BNC or Cable Gland (Specifiable) |
| Housing Material | High-strength ABS (Portable) |
| Dimensions | 140mm x 90mm x 45mm |
| Visual Indicators | Power LED and low battery warning |
| Weight | Approximately 450 grams |
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