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CMG-5TD

Accelerometer

Installation

Check you have all components and cables.

•CMG-5TD strong motion broadband accelerometer

•GPS Receiver

•Blue/grey sensor data and power cable

•Brown GPS sensor cable

•Sensor calibration data booklet

You will need a 12–24 Volt DC power supply and a

Windows or Linux PC with an RS232 (COM) port.

Keep the packaging, in case you need to transport the

sensor at a later date.

↔

Prepare the installation site. The instrument should be installed on a solid surface, such as a

concrete floor.

To create a suitable surface in a temporary site:

1. Dig a pit, or machine-auger a suitable hole for the sensor.

2. Prepare a quick-setting cement/sand mixture, and pour it into the hole.

3. Agitate (“puddle”) the mixture until the surface is level.

4. Leave the mixture for between 2 and 12 hours, depending on the type of cement used.

Scribe an accurate North/South line on the surface.

Place the sensor in position and rotate it until it’s studs

and orientation lines align with the scribed line.

If you are using a base-plate and ring:

1. Fit the longer three screws half way into alternate

holes in the round base-plate and add a lock-nut to

each (left-hand top picture).

2. Drill through the centre of the North/South line and

use the anchor bolt to fasten the round base-plate to

the surface with the screw-heads uppermost. Rotate

to the correct orientation before tightening.

4. Screw the indented mounting ring onto the bottom of

the sensor (right-hand top picture).

5. Fix the sensor onto the base-plate using the shorter

set of three screws through the mounting ring.

6. Use the bubble level to check the sensor attitude and

adjust the mounting feet as required.

1 2

Accelerometer 1
Installation 2

Indice de contenidos

Pagina 1 - Accelerometer

CMG-5TDAccelerometerInstallationCheck you have all components and cables.•CMG-5TD strong motion broadband accelerometer•GPS Receiver•Blue/grey sensor

Pagina 2 - Installation

4RS232GPSPowersupply+–PCCMG-5TDInstallation56Remove the screw-on cap protecting the offset adjusters. With a small screwdriver, adjust each offset un

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Guralp-systems CMG-5TD Installation Manual de usuario

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