Chapter 5
5–4
BlastMate III Operator Manual
Figure 5.4 Installing the Standard Transducer on a Ceiling Right Side Up.
b. Installing the Standard Transducer Using the Leveling Plate
The standard transducer may also be mounted on a ceiling using the leveling plate. This requires
optional extended leveling feet for the leveling plate (700O5402). Secure the standard transducer
to the leveling plate with the three screws provided. Remove the existing leveling feet and replace
with the extended leveling feet. Screw the leveling feet through the bottom of the leveling plate.
Place the assembly on the ceiling with the transducer right side up and the arrow pointing in the
direction of the event. Mark the position of the bolt. Install the bolt into the ceiling according to
the manufacturer’s instructions. Slide the leveling plate with the transducer over the bolt. Slide a
3/8 inch (9.5 mm) washer and a 3/8 inch (9.5 mm) lock washer over the bolt. Screw on the
retaining nut to hold the unit in position. Level the assembly by placing a level across the bottom
of the leveling plate and adjusting the leveling feet. The integrated bubble level cannot be seen
when installing the leveling plate on a ceiling. Use a level to check the installation. Tighten the
retaining nut on the bolt to secure the installation. Press the
Test
key to check your sensors using
Sensorcheck.
5.2. Theory of Operation
This section describes how Instantel’s transducer and microphone operate. It also discusses
Instantel’s Sensorcheck program, anti-alias filter, and the data analysis techniques used to
calculate monitoring results.
5.2.1. Transducer
A transducer measures ground vibrations. The actual mechanism inside the transducer is called a
geophone. Transducers have either one geophone, called uniaxial transducers, or three geophones,
called standard transducers.
Summary of Contents for Blastmate III
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