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Signal Amplifier
SAMP03 Signal Amplifier
SAMP03 is a signal amplifier for tension sensors, converting low-level sensor signals into standard output signals for tension controllers, PLCs or monitoring systems.
Key Features
Signal conditioning for tension feedback applications.
- 32-bit CPU processing with digital filtering supports stable signal updates up to 77 Hz.
- Differential input supports bridge-type tension sensors and LVDT micro-displacement sensors.
- ESD protection on input and output ports supports reliable industrial operation.
- Main channel uses low temperature drift components for stable output.
- Supports one optically isolated digital input channel.
- Supports two 12-bit ADC auxiliary analog input channels for 0–10 V signals.
- Modbus communication interface with RS-485 physical layer.
- 24 V power supply with low power consumption of about 1.3 W.
| Model | SAMP03 |
|---|---|
| Product Type | Tension signal amplifier |
| Power Supply | DC 24 V, 55 mA |
| Main Channel Supply | DC 5 V, 200 mA max. |
| Main Channel Input Signal Level | Differential ±20 mV or ±200 mV, common mode −0.3 V to 4.0 V |
| Main Channel Temperature Drift | 0.5 ppm/°C |
| Main Channel Data Update Rate | Low speed 18 Hz, high speed 77 Hz |
| Digital Input | 1 NPN input |
| Auxiliary Analog Input | 2 channels 0–10 V |
| Auxiliary Analog Input Resolution | 12-bit ADC |
| Analog Output | 1 channel 0–10 V or 0–20 mA |
| Analog Output Resolution | 12-bit DAC |
| Communication Interface | RS-485, 8 data bits, 1 stop bit, no parity |
| Communication Protocol | Modbus RTU |
| Display | 2.8-inch 260K color TFT |
| HMI | Touch screen |
| Protection Rating | IP53 |
Replacement & Spare Part
Replacing SAMP03 in a PLC feedback path?
Match the sensor input and the signal expected by the receiving PLC, computer or controller before ordering.
Input and power checks
Confirm the differential input range, ±20 mV or ±200 mV, and the DC 24 V supply. Send the amplifier label, wiring and mounting photos, plus the connected sensor model.
Output and receiving device
Check whether the machine uses 0–10 V, 0–20 mA or RS-485 Modbus RTU. Send the PLC or other receiving controller model and its input specification.
Check the SAMP03 signal path before replacing it
Display shows a value but the output to the PLC does not change
Check which output mode is set (0–10 V or 0–20 mA) and whether it matches the PLC input.
Reading is unstable at high line speed
The amplifier has a low-speed (18 Hz) and a high-speed (77 Hz) update setting; check which is selected.
No reading from the sensor
Check the 5 V sensor supply from the amplifier and the input range setting (±20 mV or ±200 mV) against the sensor’s output.
Standard tension signals for a PLC or computer
SAMP03 converts a tension sensor signal into standard outputs for a PLC, computer or another controller. The sensors listed in this range connect directly to TC100 without SAMP03; an amplifier is not required in that signal path.
Input Side
Bridge-type tension sensors or LVDT micro-displacement sensors
Output Side
0–10 V, 0–20 mA, RS-485 / Modbus RTU or controller input
Typical Use
Signal conditioning, tension feedback conversion and PLC / controller integration
Match the millivolt input to the required PLC output
The LC100A sensor’s 10 mV or 200 mV output falls within SAMP03’s two differential input ranges, ±20 mV and ±200 mV respectively. Check the selected input range against the sensor output.
Choose SAMP03 when tension sensor feedback needs to be converted into a standard output signal for a controller, PLC, computer or monitoring system.
| Good Fit | Tension sensor signal conditioning, PLC integration, remote monitoring and multi-device feedback applications. |
|---|---|
| Check First | Confirm sensor type, signal level, required output signal, communication protocol and installation environment before selection. |
| System Match | Use with compatible tension sensors and tension controllers according to the required signal output and control architecture. |
Sensors and controller options around SAMP03
Tension Controller
TC100 Automatic Tension Controller
An alternative control path: the tension sensor connects directly to TC100, without SAMP03.
View ModelTension Sensors
LC100A Pedestal-Mount Tension Sensor
Compact pedestal-mount tension sensor with low temperature drift, high stability and good linearity.
View ModelLS100A Through-Shaft Tension Sensor
Stainless-steel through-shaft tension sensor with IP66 protection for harsh converting environments.
View ModelLF100A Through-Shaft Tension Sensor
Live-shaft flange tension sensor with built-in self-aligning bearings for reliable web tension measurement.
View ModelLFP100A Through-Shaft Tension Sensor
Compact flange tension sensor with self-aligning bearings for easy roller installation and maintenance.
View ModelLX100A Cantilever Tension Sensor
Cantilever roller tension sensor for stable detection independent of web position on the roller.
View ModelWhere SAMP03 provides standard tension feedback
PLC-Based Tension Monitoring
Converts tension sensor feedback into standard signals for PLC or computer systems.
Closed-Loop Tension Control
Provides conditioned feedback signals for automatic tension control systems.
Machine Retrofit Projects
Useful when adding tension feedback to existing converting or rewinding equipment.
Multi-Sensor Tension Measurement
Supports signal processing where stable sensor feedback is required.
New to tension control? See what web tension control is and how it works for how this component fits into the control loop.