HLSR 40-P Sensors, Transducers

Series:	HLSR-P
Packaging:	Tray
Part Status:	Active
For Measuring:	AC/DC
Sensor Type:	Hall Effect, Open Loop
Current - Sensing:	40A
Number of Channels:	1
Output:	Ratiometric, Voltage
Sensitivity:	20mV/A
Frequency:	400kHz
Linearity:	±0.5%
Accuracy:	±1%
Voltage - Supply:	5V
Response Time:	2.5µs
Current - Supply (Max):	25mA
Operating Temperature:	-40°C ~ 105°C
Polarization:	Bidirectional
Mounting Type:	Through Hole
Package / Case:	Module

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Current transducers are devices which transform an electrical signal, such as a voltage or current, into a physical signal, such as temperature, pressure, or displacement. This can be done in both analog or digital. One type of current transformer is the Helmholtz Linear Self-Regulating (HLSR) 40-P, which is a compact, factory-calibrated devices used to detect current and provide isolation between input and output currents.The HLSR 40-P is suitable for general purpose applications and provides reliable and accurate readings for applications from industrial and commercial buildings to residential and rural sites. It is suitable for use with 0-60A AC currents and features a presence of an over-loaded current-carrying circuit, a temperature indicator, and a zero and reset circuit breaker.The working principle of the HLSR 40-P is based on the linearity of the output voltage to the input current, where the input current is sensed by a solid state sensor, converted into a proportional output voltage, and filtered to provide noise immunity. This output voltage is then multiplied by a linear function of the input current and then compared against a reference voltage which is provided by an internal referencing circuit. If the measured voltage matches the internal reference voltage, the output current is then considered stabilized.The main functions of the HLSR 40-P current transformer are to provide safety, accuracy, and isolation from the input current. In terms of safety, the internal circuitry of the HLSR40-P serves as an over-load protection circuit which prevents the output voltage from exceeding the specified current rating of the device. It also limits the maximum input current that the sensor can handle, in order to avoid damage to the device.The accuracy of the HLSR 40-P current transformer is provided by its use of a temperature indicator and zero and reset circuit breakers. The temperature indicator is used to monitor the temperature within the device, and the zero and reset circuit breakers ensure accuracy even if the device is misaligned or damaged.Lastly, the internal isolation circuitry of the HLSR 40-P ensures that the input and output currents are isolated from each other. This helps to maintain accuracy and prevent any unwanted effects on the surrounding circuits.Overall, the HLSR 40-P current transformer provides reliable and accurate readings, and is suitable for general-purpose applications. It is a compact and factory-calibrated device which provides safety, accuracy, and isolation, making it an ideal choice for industrial and commercial buildings, as well as residential and rural sites.

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