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| TAKING READINGS | GEOKON
5.
TAKING READINGS
5.1
GK-404 VIBRATING WIRE READOUT
The Model GK-404 VW Readout is a portable, low-power, hand-held unit that is
capable of running for more than 20 hours continuously on two AA batteries. It
is designed for the readout of all
GEOKON
vibrating wire instruments, and is
capable of displaying the reading in digits, frequency (Hz), period (
µ
s), or
microstrain (
µ
ε
). The GK-404 also displays the temperature of the transducer
(embedded thermistor) with a resolution of 0.1 °C.
10:
FIGURE 10:
GK-404 Readout
5.1.1 OPERATING THE GK-404
1.
Attach the flying leads by aligning the red circle on the silver Lemo
connector with the red line on the top of the GK-404 (see Figure 11). Insert
the Lemo connector into the GK-404 until it locks into place.
2.
Connect each of the clips on the leads to the matching colors of the sensor
conductors, with blue representing the shield (bare).
3.
To turn on the GK-404, press the
On
/
Off
button on the front panel of the
unit. The initial startup screen will display.
4.
After a delay, the GK-404 will start taking readings and display them based
on the settings of the
Pos
and
Mode
buttons.
The unit display (from left to right) is as follows:
■
The current position: set by the
Pos
button, displayed as A through F.
■
The current reading: set by the
Mode
button, displayed as a numeric value
followed by the unit of measure.
■
Temperature reading of the attached instrument in degrees Celsius.
Use the
Pos
and
Mode
buttons to select the correct position and display units
for the model of equipment purchased.
The GK-404 will continue to take measurements and display readings until the
unit is turned off, either manually or by the Auto-Off timer (if enabled).
For more information, consult the GK-404 manual.
11:
FIGURE 11:
Lemo Connector to GK-404
