Choosing The Right Signal Conditioner

Identify the signal you need to condition

Begin by determining the input signal type coming from your sensor or electrical source.

Input Type Overview

Input Type	Common Sources	Recommended Conditioner
AC Voltage	Mains supply, equipment voltage	Volt Signal Conditioner
DC Voltage	Battery systems, control circuits	Volt Signal Conditioner
AC Current	Motors, feeders, CT-based circuits	CT Signal Conditioner / Amp Signal Conditioner
DC Current	Process loops, solar, battery charging	Amp Signal Conditioner / Shunt Signal Conditioner
Micro Current	Sensors producing µA-level signals	Micro Signal Conditioner
Frequency / Pulse	Flowmeters, tachometers, rotating equipment	Frequency Signal Conditioner / Rate Signal Conditioner
Temperature	Thermocouples	Temperature Signal Conditioner
Single, Split or Three Phase Power	Panels, generators, distribution	Power Signal Conditioner

Select Your Required Output

Choose the output format your PLC, HMI, or controller accepts.

Output Format Comparison

Output Type	Use When	Notes
4–20 mA	Long cable runs, noisy environments	Most common industrial standard
0–10 V	Short cable runs, high-resolution analog inputs	Ensure your controller supports voltage inputs
Open-collector digital outputs	Alarm conditions or switching needs	Available on many models

Match the Measurement Range

Make sure the conditioner covers your expected signal range.

Range Selection Guide

Conditioner Type	Supported Ranges	Notes
Amp SC	Up to 5 A direct	For low-to-medium current measurement
CT SC	Depends on CT ratio	Use for high current (motors, feeders)
Shunt SC	Matches DC shunt values	Use for DC current with shunts
Micro SC	0–200 µA	For very low-level signals
Volt SC	AC or DC voltage ranges	Check max voltage requirements
Rate / Frequency SC	2 Hz to 60 kHz depending on model	Match to sensor pulse rate
Power SC	Single or 3-phase networks	Confirms voltage, current, and PF ranges

Selecting a range that is too large reduces accuracy; selecting one too small can clip the signal.

Verify Isolation Requirements

Isolation prevents ground loops and protects sensitive electronics.

Isolation Levels and Use Cases

Need	Recommended Level	Suitable Models
Prevent noise and drift	Standard isolation	Amp, CT, Volt, Micro, Rate, Frequency
Protect against electrical surges	Higher functional isolation	Power SC
Mixed AC and DC signals	Input-to-output isolation	Most conditioners

Check Power Supply Compatibility

Confirm the auxiliary power available in your control panel.

Power Supply Options

Conditioner Type	Supply Voltage	Notes
M1 / M2	12–24 V AC/DC or 100–240 V AC (model dependent)	Multi-function options
Amp / CT / Rate / Micro / Frequency	24 V DC	Standard for most panels
Power SC	24 V DC	Used in power monitoring applications

Incorrect supply voltage may prevent startup or affect accuracy.

Consider Functional Requirements

Some applications require additional capabilities.

Feature Comparison

Feature	Description	Available On
Alarm Outputs	Digital outputs triggered by set thresholds	Amp, CT, Rate, Frequency, Micro, M1/M2
Non-linear Scaling	Allows 20-point custom scaling	Frequency, Rate, Micro, M1/M2
Dual Outputs	Analog + digital output for control and alarms	Many SC models
Multi-Function Input Types	One device for current, voltage, or frequency	M1 / M2

Select the Conditioner That Fits Your Application

Use the table below to choose your final model.

Application-to-Model Guide

Application	Recommended Conditioner	Why
Motor load monitoring	CT Signal Conditioner	Works with CTs for high current
Battery systems (DC)	Volt or Shunt SC	Handles DC voltage and shunt inputs
Flow measurement (pulse output)	Frequency or Rate SC	Converts frequency to analog
Low-level sensor outputs	Micro SC	Designed for µA-level inputs
Multi-signal panels	M1 or M2	Flexible, covers V/A/Hz
Power quality monitoring	Power SC	Measures V, A, PF, kW in AC networks