Do you have a question about the GK-404 and is the answer not in the manual?
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Moses Abugri
February 12, 2025
how to read frequency on gk404 readout
2 comments:
Mr. Anderson
February 12, 2025
The Geokon GK-404 Vibrating Wire Readout is designed to display readings in different formats, including frequency (Hz). To read frequency on the GK-404:
1. Ensure the unit is powered on with properly installed batteries. 2. Connect the vibrating wire gauge to the readout using the alligator clip connections. 3. Verify the connections are secure and the gauge resistance is between 90 and 180 ohms using an ohmmeter if needed. 4. The readout will display the measurement in various formats, including frequency (Hz). 5. If the display shows dashes instead of a reading, check the connections and try another gauge to confirm functionality.
The GK-404 readout provides frequency measurements with a resolution of 0.1 Hz and an accuracy of ±0.025% of full scale (6000 Hz).
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WARRANTY STATEMENT warrants its products to be free of defects in materials and workmanship, GEOKON under normal use and service for a period of 13 months from date of purchase. If the unit should malfunction, it must be returned to the factory for evaluation, freight prepaid.
20 hours continuously on two AA batteries. It is designed for the readout of all Geokon vibrating wire gauges and transducers, and is capable of displaying the reading in either digits, frequency (Hz), period (μs), or microstrain (με).
FIGURE 1: Lemo Connector to GK-404 FIGURE 2: Neck Strap Connector Place the larger circular hole onto the plastic nub on the back of the GK-404, with the bottom of the connector to the right (see the figure below). FIGURE 3: Connector on GK-404 Slide the connector all the way to the right, so that the nub on the back of the GK-404 locks into the smaller hole of the connector.
Thermistor Green's Black Blue's Black Yellow's Black White's black and Green wires are switched on Geokon three gauge VW load cells prior to serial number 3313. TABLE 1: Load Cell Wiring Diagram MODEL GK-404 VIBRATING WIRE READOUT | INITIAL SETUP | 3...
OPERATION To turn on 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.
This is a bar graph display of the power remaining in the two 1.5V AA cells, with F for FULL and E for EMPTY. The GK-404 is capable of continuous operation for greater than 20 hours on a fresh set of batteries.
4.2 BATTERY REPLACEMENT Alkaline batteries are the best choice for use in the GK-404. A set of two 1.5V AA batteries are installed in the GK-404 at the factory. To replace the batteries, use a #1 Phillips screwdriver to remove the battery compartment cover located at the back of the readout.
SYMPTOM: DISPLAY SHOWS WEIRD CHARACTERS □ Switch the GK-404 to the ON setting while pushing the Cfg and Pos buttons at the same time, to restore the unit to its factory default settings. MODEL GK-404 VIBRATING WIRE READOUT | TROUBLESHOOTING | 7...
GEOKON or indirectly by the proper or improper use of the GK-404 Vibrating wire readout, beyond the purchase price of the readout. 8 | LIMITS OF LIABILITY | GEOKON...
Pin # on 5‑pin LEMO Flying Leads Alligator Wire Color Description (HGG.OB.305.CLLP) Clip Boot Color VW Gauge+ Black Black VW Gauge- White White Thermistor+ Green Green Thermistor- Bare Blue DrainWire TABLE 6: Transducer Plug Pinout MODEL GK-404 VIBRATING WIRE READOUT | SPECIFICATIONS | 9...
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GEOKON Phone: +1 (603) 448-1562 GEOKON 48 Spencer Street Email: info@geokon.com is an ISO 9001:2015 Lebanon, New Hampshire Website: www.geokon.com registered company 03766, USA...
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Do you have a question about the GK-404 and is the answer not in the manual?
Questions and answers
how to read frequency on gk404 readout
The Geokon GK-404 Vibrating Wire Readout is designed to display readings in different formats, including frequency (Hz). To read frequency on the GK-404:
1. Ensure the unit is powered on with properly installed batteries.
2. Connect the vibrating wire gauge to the readout using the alligator clip connections.
3. Verify the connections are secure and the gauge resistance is between 90 and 180 ohms using an ohmmeter if needed.
4. The readout will display the measurement in various formats, including frequency (Hz).
5. If the display shows dashes instead of a reading, check the connections and try another gauge to confirm functionality.
The GK-404 readout provides frequency measurements with a resolution of 0.1 Hz and an accuracy of ±0.025% of full scale (6000 Hz).
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