GS YUASA GYT117 Conductance Tester User Manual

CONDUCTANCE TESTER

USER GUIDE

www.yuasa.com/GYT117

Contact us

www.gs-yuasa.eu
GS Yuasa Battery Sales UK Ltd.
Hunts Rise, South Marston Industrial Estate, Swindon SN3 4TG
+44 (0) 1793 833555
info@gs-yuasa.uk

Overview

The GS Yuasa GYT117 conductance tester provides a simple method to screen the state-of-health for Valve Regulated Lead Acid (VRLA) batteries ranging from 0.5Ah to 25Ah.

Specifications

Voltmeter operating range: +6.0 to +19.99 Vdc
Voltage accuracy: +/­50 mV across operating range
Operating temperature: ­18 to 50°C (0 to 120°F)
Voltage test limits: 12V high = 13.80V 12V low = 12.00V 6V high = 6.90V 6V low = 6.00V Siemens range: 20 to 1200S

CAUTION: Attempting to operate the GS Yuasa GYT117 beyond its specified operating range may result in permanent damage to the tester.

Safety precautions

• Always comply with facility safety standards when performing battery maintenance.
• Always use extreme caution when working with batteries.
• Safety glasses and other PPE should be worn. Failure to do so,  may result in personal injury.
• To avoid electrical shock, remove personal metal items such as rings, bracelets, necklaces and watches.
• To determine if the battery can be safely tested, inspect the battery for a bulging case, leakage, cracks in the case, or other visible signs of defects or problems.

Conductance and Voltage measurements

Conductance is an indicator of a battery’s state of health and its ability to meet its rated capacity. The GS Yuasa GYT117 measures and displays the direct current Voltage (Vdc) and conductance for any 6 or 12 Volt battery rated between 0.5 and 25 Ampere hours (Ah) of discharge capacity. DC Voltage is a measure of a battery’s electrical potential.
Conductance is a relative measure of a battery’s ability to meet its rated capacity. The GS Yuasa GYT117 displays the conductance value in Siemens (S). In general, a high relative conductance measurement is an indication of a good battery, and a low measurement indicates a battery in degraded condition.

GS Yuasa GYT117 keypad and LEDs

1. UP ARROW – Press for 12 Volt batteries and to scroll to the reference value (20 to 1,200 Siemens).
2. ENTER – Press to select the reference value, to start the test, and to display conductance in Siemens (S).
3. DOWN ARROW – Press for 6 Volt batteries and to scroll to the reference value (20 to 1,200 Siemens).
4. VOLTMETER – Press at any time to read DC Voltage.

The red LEDs above the keypad indicate the test mode and the numerical value shown on the display (Voltage, Siemens, and percent of reference). You can use the GS Yuasa GYT117 as a Voltmeter at any point in the test procedure by pressing the VOLT button.

Battery test procedure

1. Disconnect the battery from the system.
2. Connect the tester clamps to the battery terminals: red to positive (+), black to negative (–).
3. Select the voltage by pressing the UP ARROW button for 12 volts or the DOWN ARROW button for 6 volts. Press ENTER.
4. Scroll to the reference value by pressing the UP ARROW or DOWN ARROW buttons. Press ENTER. (The tester will default to the last reference value entered).
5. Start the test by pressing ENTER. A series of dots will flash on the display while the GS Yuasa GYT117 measures conductance and Voltage, and calculates a percentage of reference.
6. The first value displayed is the percentage of reference.
7. To display the actual conductance value (S), press and hold the ENTER button.
8. To display Voltage, press the VOLT button.

Troubleshooting

TOO LO: The battery’s Voltage is below the specified operating range (< 6.00V for a 6V battery or <12.00V for a 12V battery).
Note: If the battery is below 5.5V, the tester will not operate.
TOO HI: The battery’s Voltage is above the specified operating range (> 6.90V for a 6V battery or >13.80 V for a 12V battery).
999 (or 9999 when ENTER is pressed): The battery has exceeded the range specified. Refer to `Specifications’ for the tester’s operating range. Excessive electromagnetic interference may cause the tester to reset. If the tester resets during testing, simply disconnect it from the battery, reconnect and start the test process again.

Establishing a conductance reference value
Battery performance is temperature dependent. Allow the batteries to reach room temperature before testing – ideally around 25°C (77°F). Refer to the following battery temperature compensation scales below for the compensation factor. As conductance is a relative measure, you must first establish a reference value by testing a sample number of new batteries. To establish a reference value, record the average of at least ten fully charged batteries of the same or similar models, preferably within 90 days of their installation. GS Yuasa recommends that the batteries should all test within 20% of each other (+/­10% of the average). (Consult your battery supplier for conductance values). If new batteries are not available, record the average of installed batteries of the same or similar models regardless of age. If the installed batteries test within 10% of each other, the highest value can be used as a temporary reference until new batteries are available for testing.

Example: Within 90 days of installation, measure a sample of 20 new batteries (12V, 17Ah) that average 300S each when fully charged. Conductance will decline as a battery ages. The amount of acceptable loss will depend on the type of application for which the battery is used. As a general rule:
<30% loss = Strong battery – no significant capacity loss (300 x 0.70 or more 210S)
30 to 40% loss = Marginal battery – nearing the end of its serviceable life (180 to 210S)

40% loss = Degraded battery – may not meet the required load (300 x 0.60 or less 180S)
Consult your battery supplier to ensure that the rated battery capacity is sufficient for the applicable equipment runtime while allowing for the appropriate aging factor of the batteries.

Battery temperature compensation scales

Examples:
Using a reference value of 300, the GS Yuasa GYT117 reports 63%, 190S. If the battery temperature is 35°C (0.63 x 0.93 = 0.59 or 59%), the battery should be replaced.
Again using a reference value of 300, the GS Yuasa GYT117 reports 63%, 190S. If the battery temperature is 0°C (0.63 x 1.175 = 0.74 or 74%), the battery is good.
For a full list of Siemens values for Yuasa battery types visit www.yuasa.com/GYT117

Disposal and warranty information

WEEE marking (disposal)

All GS Yuasa products shipped from 13 August 2005 that are subject to the WEEE directive are compliant with the WEEE marking requirement. Such products are marked with the WEEE symbol (shown right) in accordance with European Standard EN50419.
All old electrical equipment can be recycled. Please do not throw any electrical equipment, including those marked with this symbol, in your bin.

Customer information

The symbol on the product or its packaging indicates that this product must not be disposed of with your other household waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. For more information about where you can drop off your waste for recycling, please contact your local authority, or where you purchased your product.

Warranty

This product is guaranteed against premature failure due to manufacturing or material defects for a period of two years from the date of purchase. Within the warranty period, the customer must contact the authorised supplier or retailer where the product was purchased with proof of purchase in order to process the warranty claim.
Resellers may underwrite and offer extended warranties to endusers. Please consult your place of purchase for further details.
The warranty period commences on the date shown on the proof of purchase. The warranty is valid only for the purchaser of the battery tester and is not transferable.
If a replacement battery tester is offered, the warranty period runs from the date of purchase of the original battery tester.

References

• GS Yuasa Group Europe
• GS Yuasa GYT117 Conductance Tester
• Yuasa - Der weltweit führende Hersteller von Batterien
• yuasa.es
• Yuasa - Le premier fabricant mondial de batteries
• Yuasa - Leader mondiale nella produzione di batterie
• Yuasa batterier i Sverige | Batteripoolen - Sveriges bredaste sortiment av batterier, laddare, solenergi och tillbehör

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