SC11 Applications

Surveys
Designed with electron microscope and E-beam vendors and consultants in mind the SC11 provides all the features needed for site surveys in one simple, easy to use package.

The SC11 is ideal for making accurate surveys of magnetic fields, vibrations and acoustic levels. Before installing equipment such as a scanning electron microscope (SEM) it is advisable to survey the location first. In an environment where there are many pieces of equipment, power cables and air handling units it is difficult to judge in advance whether there could be problems. You can use the SC11 system to survey the magnetic field, vibration and sound levels to make sure that they are within specification at the proposed site for the SEM. With the latest software, you can load the SEM specifications into the spectrum analyser for quick comparison with your measurements. The industry standard 1/3 octave analysis feature is useful in this application.

Trouble shooting
The magnetic field sensor is very sensitive, so it allows you to pin-point sources of magnetic fields, such as transformers, motors and poorly installed power cables. The oscilloscope and the spectrum analyser enable you to see the waveforms and frequencies of the field, which can be very helpful in identifying its source. You can use the same techniques for vibrations and sound levels.

Analysis
You can directly compare the magnetic fields with accelerometer or sound waveforms using the oscilloscope or the chart recorder. Also for example, you can connect the auxiliary input to the video output of an SEM in spot mode to compare magnetic fields with the movement of the electron beam. You can use the SC11 chart recorder to trace intermittent sources of magnetic fields, vibrations or acoustic levels. For example, you can chart the floor displacement or use the narrow band filter to log the magnitude of a known-frequency vibration over a long period. You can use the extended low frequency mode to monitor long term magnetic field fluctuations. This can help you to identify fields due to the movement of such things as steel doors, lifts, trains and trams.

Sensor Calibration

The calibration of the magnetic field sensor is NAMAS traceable. The accelerometer is supplied with a calibration certificate traceable to the National Institute of Standards and Technology, Gaithersburg, MD, USA. Spicer Consulting provides a re-calibration service for the entire system.

Customisation

All the virtual instruments can load and save their control settings to named files so that they can be quickly configured for standard measurements. User-defined units may be entered for use with other sensors connected to the auxiliary input.