Description
The Positek G005 CSA approved galvanic isolation amplifier has an input power supply range of 12 to 30 volts dc, making it suitable for a wide range of hazardous area applications. It is tri-port isolated providing isolation between the amplifier power supply, the hazardous area and the G005 output signal. The sensor supply and output are transformer coupled providing 2.5kV isolation between the safe and hazardous area circuits eliminating the requirement for a high-integrity earth.
The output of the G005 galvanic isolation amplifier is factory configured to either 0.5 to 9.5V or 4-20mA and has a bandwidth of 4.7kHz, making it ideal for servo control loops.
Output options available;
G005-545 0.5 to 9.5V
G005-546 9.5 to 0.5V
G005-425 4 to 20mA
G005-426 20 to 4mA
Versions are also available for potentiometer inputs.
The screw terminal connector plugs are coded to eliminate cross connection.
The G005 has been designed specifically for use with Positek Intrinsically Safe position sensors in hazardous zone 0, 20 Class I, II & III applications and is certified; [Ex ia IIC] [AEx ia IIC]; [AEx ia D IIIC]. Positek® IS sensors are ratiometric i.e. the output signal scales with the supply voltage, to ensure the safe area signal accurately corresponds with sensor displacement it is important that the sensor supply is correct.
G005 provides a regulated and resistively limited +5V dc power supply required by Positek IS sensors, it can be connected in three or five wire modes. Used in five wire mode positive and negative sense inputs enables the unit to dynamically adjust the sensor supply thus ensuring the correct voltage across the sensor. Connected in this way the amplifier can compensate for 15Ω conductor resistance. The sense terminals are linked internally so the end user can use the amplifier in three wire or five wire mode without the need to fit or remove external links.
The Positek® Amplifier can also be supplied configured for use with potentiometers.
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