Section 1 Introduction
Io
SENSOR
4
SMT-200 Operations and Technical Manual 2.00/R1
1.3 Overview
The SMT-200 is the latest addition to the Sensor range of geophone testing equipment. Due to the
advanced technology used in the design it has all the features of previous generation testing
equipment in a smaller and more compact unit. Its easy to use menu system allows the SMT-200 to be
quickly configured to test virtually any type of geophone string. Internal automatic calibration
eliminates the need for regular maintenance.
The Docking station is provided to manage battery charging and communication between the
SMT-200 and the PC.
The SMT-200 can be operated from lead-acid gel batteries (2 supplied) or connected to the docking
station for file transfer. The battery pack will supply enough power for 4 hours heavy field use.
1.4 Specifications
Natural Frequency
Range
1 to 100Hz
Accuracy
< 8Hz
± 2% of measured value or 0.1Hz whichever is the greater
8Hz - 14Hz
± 0.5% of measured value or 0.05Hz whichever is the greater
>14Hz
± 1% of measured value
Display Resolution
0.01Hz
Coil Resistance
Range
20 to 9999 ohm
Accuracy
± 1% or 1 ohm whichever is the greater
Display Resolution
1 ohm or 0.1 ohm when measured value is less than 100 ohm
Damping
Range
0.100
to
0.850
Accuracy
± 1% of measured value
Display Resolution
0.001
Sensitivity
Range
0 to 999 V/m/s
Accuracy
± 2% Calculated from other measured values
Display Resolution
0.1 V/m/s
Harmonic Distortion
Range
0 to 20 %
Accuracy
± 10% of measured value or 0.01% whichever is greater
Display Resolution
0.01%
Dynamic Resistance
Range
20 to 99999 ohm
Accuracy
Not specified
