Taking Readings; Gk-404 Readout Box; Operating The Gk-404; Figure 16 - Lemo Connector To - Geokon 4820 Instruction Manual

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3. TAKING READINGS

The Model GK-404 Vibrating Wire Readout is a portable, low-power, handheld 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 gages and transducers, and is capable of displaying the

reading in either digits, frequency (Hz), period (µs), or microstrain (µε). The GK-404 also

displays the temperature of the load cell (embedded thermistor) with a resolution of 0.1 °C.

Before use, attach the flying leads to the GK-404 by aligning the red circle on the silver

"Lemo" connector of the flying leads with the red line on the top of the GK-404 (Figure

16). Insert the Lemo connector into the GK-404 until it locks into place.

Connect each of the clips on the leads to the matching colors of the sensor conductors,

with blue representing the shield (bare).

To turn the GK-404 on, press the "ON/OFF" button on the front panel of the unit. The

initial startup screen will be displayed. After approximately one second, 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 letter 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 gage in degrees Celsius.

Use the POS button to select position B and the MODE button to select Dg (digits).

(Other functions can be selected as described in the GK-404 Manual.)

The GK-404 will continue to take measurements and display readings until the unit is

turned off, either manually, or if enabled, by the Auto-Off timer. If the no reading

displays or the reading is unstable, see Section 5 for troubleshooting suggestions.

For further information, please see the GK-404 manual.

Figure 16 - Lemo Connector to GK-404

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4830 4815 4800 series