Photo of Model GK-403.

Vibrating Wire Readout Box

Model GK-403

The Model GK-403 is designed for use with all of Geokon’s vibrating wire sensors in all kinds of weather conditions and comes with a battery charger, patchcord, RS-232 interface cable, communications software and manual. Storage of the readings is a simple one-button operation and each stored reading is identified by a reference number, ranging from 1 to 256, plus time, date and temperature. All readings can be transmitted to a host computer and imported into spreadsheet and database applications. Terminal boxes, allowing instrument cables to be grouped and read at one convenient location, are also available.

Specifications
Excitation Range 400 Hz to 6000 Hz, 5 Volt Square Wave
Resolution

0.1 µs
Timebase Accuracy ±50 ppm
Temperature Range −10°C to +50°C
L × W × H 191 × 133 × 235 mm

Photo of Model GK-404.

Vibrating Wire Readout Box

Model GK-404

The Model GK-404 Vibrating Wire Readout Box 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 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 transducer (embedded thermistor) with a resolution of 0.1°C.

Specifications
Excitation Range 400 Hz to 6000 Hz, 5 Volt Square Wave
Resolution

0.1 µs
Timebase Accuracy ±50 ppm
Temperature Range −20°C to +50°C
L × W × H 120 × 65 × 22 mm

Photo of Model GK-501.

Load Cell Readout Box

Model GK-501

The Model GK-501 Load Cell Readout Box is a portable battery powered instrument for reading Geokon Model 3000 Series Load Cells (full bridge resistance strain gage type). The Readout Box incorporates a 12 volt, 1.2 Ahr lead acid battery, a 4.5 digit liquid crystal display (LCD), a power on/off switch, a battery charger circuit, an AC adapter connector, a load cell connector and a selector switch. It displays the output in units directly proportional to the load.

Specifications
Excitation Range ±19999 digits on “× 1”, ±39998 digits on “× .5”
Resolution

1 digit on “× 1”, 2 digits on “× .5”
Accuracy 0.125% F.S. on “× 1”, 0.125% F.S. on “× .5”
Temperature Range −30°C to +50°C
L × W × H 165 ×102 × 216 mm

Photo of Model GK-603.

Inclinometer Readout Box

Model GK-603

The Model GK-603 Inclinometer Readout Box is an easy-to-use, portable and rugged instrument for reading inclinometer probes and tiltmeters, and for storing and analyzing the resultant data. It is housed in a weather resistant aluminum case to withstand the rigors of field operation and has a large (15 row by 20 column) backlit LCD which provides exceptional viewing under virtually all lighting conditions. A 12 volt 7.0 Ahr rechargeable battery powers the unit and an internal lithium battery will retain the configuration and data files for up to four years if battery failure or disconnection occurs.

Specifications (Analog Measurement)
Input Range ±10 VDC
Resolution

1 part in 40,000
Accuracy ±0.15% F.S.
Temperature Range¹ 0°C to +50°C
L × W × H 210 ×165 × 203 mm

¹Low temperature versions (to −30°C) available on request.

Photo of Model RB-100.

Linear Potentiometer Readout Box

Model RB-100

The Model RB-100 Linear Potentiometer Readout Box is designed to read Geokon’s range of Model 1500 Linear Potentiometers. The unit utilizes a high resolution, 4.5 digit LCD digital voltmeter with circuitry to power and read out the potentiometers. A three wire ratio-metric system is used to minimize errors caused by long lead lengths and varying temperatures. In use, a regulated voltage is applied to the ends of the potentiometer resistance element and the position of a wiper that rides along the ele-ment can be determined by the voltage measured at this point. Accuracies of 0.1% of full scale can be achieved using Geokon transducers.

Specifications
Input Range 2, 4 or 6 in
Resolution¹

±0.001 in
Accuracy 0.1% F.S.
Temperature Range 0°C to +50°C
L × W × H 100 × 165 × 215 mm

¹The RB-100 is available in English measure only.

Please Note: Geokon maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice.