E10356-110615
MB-3TL
Page 5
Gage Type
Gage Factor
LU Conversion
Sweep
VBS-2
N/A
Hz
C, D
JM, VH
1.0000
Hz
2
/1000
B, C
SM-2, EM-2, IRHP
0.3911
Hz
2
/1000 x G.F.
B, C
PW, TPC, EPC, SSG
1.0156
Hz
2
/1000 x G.F.
A, B, C
EM-5, EM-10, SM-5
4.0624
Hz
2
/1000 x G.F.
A
L = K x F
2
F = 10
6
1000
N
Where L = Linear units (LU)
Where F = Frequency (Hertz)
K = Gage factor
N = Normal reading (micro seconds)
F = Frequency (Hertz)
2.4 OBSERVE THE READING
The MB-3TL excites the sensor at two second intervals and displays the VW reading
and the temperature reading (degrees C).
2.4.1 READING STABILITY
You may see some variation in the decimal digit due to sensor performance, site
conditions, electromagnetic noise, and the actual resolution of the recorder. Variations of
up to ±0.3 Hz are not considered significant, since values within this range maintain the
stated accuracy for VW sensors.
2.4.2 QUESTIONABLE READINGS
The MB-3TL performs a "quality" test on each reading and displays a question mark (?)
in front of readings that fail the test. If the reading varies more than ±0.3 Hz or if you see
a question mark, try to change the sweep frequency in order to obtain a more stable
reading.
