Geotech GT-HR User manual

Model GT-HR
Operation Manual
Multi-function Readout
Copyright Ⓒ1993-2018 Geotech Cooperation. All right reserved. Doc Rev 1.2 (2018/03/31)
2F., No.200, Sec 3, Datung Rd, Xizhi Dist
New Taipei City 221, Taiwan (R.O.C)
Geotech Science Cooperation Ltd

Notes on use of product
•For safe and efficient use of the product, please read carefully the following
instructions before starting any operation.
•Any use of the product other than the one described in this manual shall be
considered the user’s full responsibility.
•The same applies for any unauthorized modifications.
•In addition to the hereby listed standards, the user must comply with the provisions of
the current legislation regarding personal safety and health together with all other
persons in the workplace.
•GEOTECH is not responsible for any accident, breakdown or other problems due to
lack of knowledge and / or non-compliance with the requirements contained in this
manual. Check that the product has not been damaged during the transport.
•Verify that the package includes all items as well as any requested optional
accessories; if anything is missing, please promptly contact GEOTECH.
•The user must strictly follow all the operations described in this manual.
•Maintenance or repair of the device is permitted only by authorized operators.
•These operators must be physically and intellectually suitable.
•For information about instrument or to order spare parts, always specify the product
information which can be found on the identification label.
•When replacing parts, always use ORIGINAL SPARE PARTS.
•The manufacturer reserves the right to make either technical and / or commercial
changes without prior notice.
•It is our policy to keep manuals continuously updated.
Instruments can be identified
•From a production lot number (written on the Compliance Certificate)
•From a serial number (s/n) engraved indelibly on the instrument
•From a label on the instrument
•From a label on the cable

GT-HR Multi-Functional Readout
Package includes

Table of Contents
Notes for Using the Product............................................................................................................1
GT-HR Front Panel............................................................................................................................... 1
Product Introduction .........................................................................................................................3
Accessories ............................................................................................................................................4
Battery ..................................................................................................................................................... 5
How to Charge the Battery ..............................................................................................................5
Taking Care of Lithium Battery.......................................................................................................6
Operational Instructions...................................................................................................................7
Front Panel Controls.................................................................................................................7
1. “Up” and “Down” Keys ..............................................................................................7
2.”Left” Key .........................................................................................................................7
3.”Right” Key ......................................................................................................................7
4.”Enter”Key .......................................................................................................................7
5. Key Note .........................................................................................................................8
Operational Diagram................................................................................................................ 8
Main Menu ...................................................................................................................................9
1. DC Voltage Measurement.................................................................................10
2. AC Voltage Measurement .................................................................................12
3. Vibrating Wire Type Measurement................................................................13
4. Current!Measurement.........................................................................................15
5. Language Selection.............................................................................................16

GT-HR Multi-Functional Readout
1!
Notes for Using the Product
For safety and convenient operation, please carefully read this user manual before using
the product.
GT-HR Front Panel
Display
Keypad
Charge Light
Power Light

GT-HR Multi-Functional Readout
2!
Label
Battery Housing
On/Off Switch
“Sensor” Connector
Micro USB Charger
Connector

GT-HR Multi-Functional Readout
3!
Product Introduction
GT-HR Multi-Functional Readout (Herein called GT-HR) is an instrument designed to
provide precise readings of any kind of sensors including DC-voltage, AC-voltage, and
Vibrating-Wire type sensors. It is suitable for measuring sensors such as strain gages, LVDT,
piezometer, tiltmeter, load cell, EL-beam, DSM sensor, etc. While measuring the reading of
a sensor, GT-HR could transmit an excitation voltage, and could directly read feedback
voltage as reading from sensor. Thus, the data of sensor, site temperature, and current
battery capacity could be measured and displayed on its screen. The user could select and
display the language in Traditional Chinese or English. GT-HR also has LED backlight display.
For different kind of sensor, the user should select the excitation voltage. For vibrating-wire
related measurement, GT-HR has 6 position switches, and temperature measurement. It is
powered by lithium battery, which could be charged by using USB Micro connector. The
long standby time and short charging time allow this instrument to be conveniently used
on the construction site.
GT-HR could generate DC and AC excitation voltages, which could be set at 2.5V, 5V to 12V.
The output voltage reading of sensor is then measured and displayed on the screen.
Besides that, GT-HR could also provide current measurement for 2-wire 4-20mA sensors.
For this measurement, 12V DC excitation will be excited to sensor, and the respective
output current from sensor will be measured. For vibrating wire sensor measurement,
6-types of position modes (A-F) are selectable for measuring different types of sensors.