116 Micromate Operator Manual – 721U0201 Revision 6
NOTE: If the Geophone is being mounted to the ceiling, the directional arrow must be mounted
against the ceilings surface to ensure that the orientation of the internal vertical transducer is
correctly position.
5. Ensure that the geophone cable is securely attached to the Micromate.
6. Press the Sensor Check key on the Micromate ensuring the sensor is properly attached,
level and all sensors are passing.
b. Sandbagging the Geophone – Low Velocity Levels Only
This method of installation should only be used where velocity levels will remain very low and
direct bolting is not practical. The sand bag should contain at least 4.5 kilograms (10 pounds) of
sand or similar material, that is large enough to completely cover the geophone.
Geophone Located Under Sandbag
1. Place the geophone in the desired location with the arrow pointing at the vibration source.
2. Place the sand bag over top of the geophone with the geophone as close to the middle of
the sand bag as possible.
3. Ensure that the geophone cable is securely attached to the Micromate.
4. Press the Sensor Check key on the Micromate ensuring the sensor is properly attached,
level and all sensors are passing.
14.3. Micromate Linear Microphone
The linear microphone is used to detect air overpressure levels and can be displayed in
measurement units of pounds per square inch (PSI), Pascals (Pa) or decibels (dB), all of which are
user selectable. The placement of the microphone should be between the noise source and the
structure that is being monitored. The path between the noise source and the microphone should
not be obstructed by other structures, large vehicles or other large barriers. Handle the linear
microphone with care. Dropping the microphone or otherwise subjecting it to impact may damage
the microphone elements.
The data that is received by the microphone is transmitted to the Micromate unit, via a cable. If the
microphone sensor is not located in close proximity to the unit extension cables may be used. The
extension cables can be up to 500 meters (1640 feet) in length. Refer to the Micromate accessory
To Next Page
Loading...
