G005 CSA Approved Galvanic Isolation Amplifier



The G005 Galvanic Isolation Amplifier 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.


The G005 Galvanic Isolation Amplifier 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 enable the G005 to dynamically adjust the sensor supply thus ensuring the correct voltage across the sensor. Connected in this way the G005 can compensate for 15O conductor resistance. The sense terminals are linked internally so the end user can use the G005 in three wire or five wire mode without the need to fit or remove external links.


The G005 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 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 can also be supplied configured for use with potentiometers.



Specification

Intrinsic Safety

 

CSA approval

The Galvanic Isolation Amplifier, suitable for all areas, is CSA approved to:
CSA Zone 0, 20 Class I, II & III
Certified [Ex ia IIC] [AEx ia IIC] [AEx ia D IIIC]

 

Specification

 

Power Supply

 

Voltage

24V dc Nom. 12V - 30V

Current Consumption
(24V Supply)

approximately 50mA (Voltage O/P)
approximately 70mA (Current O/P)

Sensor Supply

5V @ 15mA max.

Lead resistance for 15mA

15Ω maximum (all connections)

Output Options

 

Voltage

0.5-9.5 V, Output resistance 5Ω
Current Loop 4-20mA, Load resistance 0-1Ω
Safety Parameters  

Uo

10.66V

Io

50.5mA

Po

135mW 

Li

0

Ci

0
Um 253 V

Transfer Characteristics

 

Sensor input resistance

>5MΩ

Non-linearity

<+/- 0.1% FS

Temperature drift

<0.01% FS/°C for volatge outputs 

Settling time to 1% of span

<300μs for 10-90% step change

Rise time

<200μs for 10-90% step change

Bandwidth

dc to 4.7kHz (-3dB)

Isolation

2500V between safe area terminals and hazardous area terminals, 50V between power rail (J4) and output (J3)

 

 

Electromagnetic compatability

EN561236-2-1:2006 (EN31326-1:2006)

Explosive atmosphere

EN60079-0:2006 EN60079-11:2007

Ambient templerature range

-20°C to +60°C working
-40°C to +100°C storage

Housing

97.3x22.5x111.9mm

Protection class

IP20

Mounting

35x7.5mm top-hat rail (DIN 46277-3)
   

Outline

Click for pdf
Request AutoCAD Drawing
Datasheet Click for pdf
Installation Sheet Click for pdf


Preferences

Positek offers a range of options for its standard sensors.
Each sensor is manufactured to suit each customer's preferences.
If your requirement is outside the options given below,
Positek can modify/ redesign a sensor to suit your specific requirement.
Standard options are available as below:

 

 

For use with Positek Intrinsically Safe Sensors

Output Signal
Order code
0.5-9.5V dc
G005-545
9.5-0.5V dc
G005-546
4-20 mA G005-425
20-4mA G005-426


For use with Potentiometers

Output Signal
Order code
0.5-9.5V dc
G005-001
9.5-0.5V dc
G005-002
4-20 mA G005-003
20-4mA G005-004



 

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  Positek Limited

L6 The Link   Andoversford Industrial Estate   Cheltenham   Glos GL54 4LB   UK
Tel: +44 (0) 1242820027   Fax: +44 (0)1242 820615   Email: Sales@Positek.com

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