INTRODUCTION

Congratulations on your purchase!
We love to receive feedback from our users to fully meet what is expected from a modern e-meter.
For our e-meters, we use high-quality components, selected to provide you with ideal readings, reliability, and the longest possible service life at an optimal price. By following the instructions, you can easily install, configure and use Theta-Meter.
Please take a few minutes to read the operating and safety instructions to make sure your e-meter is properly connected and working correctly. With the correct connection and observance of the operating rules, the e-meter will work accurately, reliably, and durably.

WARRANTY

Mikhail Fedorov warrants this product to be free from manufacturing defects and will work under the operating instructions for 2 (two) years from the date of shipment. During the warranty period, Mikhail Fedorov, at his discretion, will repair or replace any product and/or part of it, that proves to be defective.

To exercise this warranty, you shell contact us using the form below. You will be given prompt assistance and instructions for sending the e-meter for repair. Repaired or replaced products are warranted for the remainder of the original warranty period.

LIMITATION OF WARRANTY

This warranty does not cover defects resulting from product modifications without the express written consent of Mikhail Fedorov, physical damage, or improper use or storage of the product or part of it.

The warranty for batteries, wires, cables and adapters (adapters) is 6 months, unless otherwise specified at the time of purchase. These products are consumables and their lifespan depends on the operating conditions. 

This warranty also does not apply to the software. If you encounter a software error while using the e-meter, let us know using the feedback form. We will do the best to fix it within a reasonable time period.

SERVICE LIFE

The service life of the e-meter is at least 5 years. During this period, you can get advice on using the device, update the software and, if necessary, get a paid repair of the device after the end of the warranty period. 

The service life of the cans is 2 years, provided that they are used with Theta-Meter e-meters and the storage conditions are met.

SAFETY RECOMMENDATIONS
This product is designed and manufactured to strict quality and safety standards.
However, you should be aware of the following installation and operation precautions: 

warnings and instructions

• Read all instructions in this manual and on the device ordering page before connecting or operating the e-meter. Keep this manual so you can refer to these safety instructions. 
• Please note all warnings and safety instructions contained in these instructions. 
• Follow all operating instructions.

power supply

• USB e-meters Theta-Meter 3rd generation, Theta-Meter 3rd generation nano, Theta-Meter 3rd generation in a solocan, and Theta-Meter USB-Wi-Fi-Bluetooth 3rd generation are designed for USB connection to computers or laptops with medical-grade power supplies or when operating on battery power. If you are not sure about the quality, reliability, and certification of your computer's power supply, use a special USB adapter with galvanic isolation, or buy such adapter here.

residual electrostatic electricity

• USB e-meter Theta-Meter of the 3rd generation Pro has a built-in 5kV protection (galvanic isolator), in accordance with the rules for the development of medical devices. Therefore, it can be used with any computer or laptop without any Power Supply Unit certification restrictions. The galvanic isolator in this e-meter has limiting insulation voltage 5kV, so it is not recommended to use this device if there is an electrostatic charge on your body, before using the device, discharge the charge from your body onto a grounded metal object, for example, a central heating battery, water pipe or touch metal parts of devices connected to the grounding system. Damage to the galvanic isolator is not covered by the warranty and is paid separately for repair.

IMPORTANT!

• It is not recommended to connect the USB e-meter Theta-Meter 3rd generation Pro, Bluetooth Theta-Meter 3rd generation, and Theta-Meter USB-Wi-Fi-Bluetooth 3rd generation USB cable to a phone or tablet running Android operating system. Your phone or tablet's battery and power circuits may not be capable of supporting high-power devices and may burn out. To connect to Android phones and tablets, use USB e-meters Theta-Meter 3rd generation and Theta-Meter 3rd generation nano, either e-meters with Bluetooth connection or Wi-Fi connection.
• Do not store the e-meter in humid air, do not allow moisture to get on the surface and inside the device. 
• If you have transported the device at subzero temperatures, before using the device, let it warm up for several hours, so that possible condensation water can also evaporate. 
  

temperature

• The recommended operating and storage temperature of the device is from + 15°C (60°F) to + 40°C (104°F).
• Cans and solocans are coated with a thin layer of 99.999% pure tin. Tin is a soft metal and can be scratched with a fingernail or any hard object. For this reason, marks, scratches, and abrasions may appear on the surface of cans and solocans during manufacturing. The applied coating technologies do not allow to achieve uniform tin coating of cans, therefore, areas of uneven coatings with different thicknesses, color shades and smoothness of the coating are possible on the can surface. Tin oxidizes easily in contact with the sweat of the hands, making the color darker. 
• The permissible storage temperature for cans is from -5°C (23°F) to + 70°C (158°F). During long-term storage of cans at low negative temperatures, tin can change its crystal structure and become brittle, do not allow long storage and transportation of cans at temperatures below -10 ° C. 
• Use a soft cloth and any alcohol-based liquid to wipe sweat off the cans.
  

BATTERY 

The Theta-Meter Bluetooth e-meter uses 3.7V line-ion batteries of standard size 14500 without wires and terminals (without tabs and tags), without protection circuits (unprotected). We use EEMB LIR14500 or similar batteries.
To charge the battery of the device, connect it with a USB cable to the USB port of a computer, laptop, or a network adapter of a reliable manufacturer with a voltage of 5V and a current of 0.5A or higher. When charging, the red LED on the front of the device lights up. When the battery reaches 100% charge, the red LED either goes out or starts to glow dimly. At this point, it is recommended to disconnect the USB cable from the charger. Battery charging time is 3-4 hours. You can operate the e-meter while it is charging if the computer's power supply, laptop power supply, or charger is certified to work with medical equipment. 

 
To keep your batteries working efficiently, follow these guidelines:

• Do not completely discharge the battery. If the battery capacity decreases to 20% or less during use, charge the device.
• Do not overcharge the battery. After the battery reaches 100% charge level, disconnect the e-meter from the charger. Continued charging fully charged battery may result in a decrease in battery capacity.
• Do not store the device in high temperatures, near heating devices, or direct sunlight. High storage temperatures lower the battery charge level and lead to a decrease in battery capacity. The recommended operating temperature of the device with the battery is from +15 to + 40°С (from +60° to +104°F). Storing and charging the battery at high ambient temperatures (+ 50°C (122°F) and above) can damage it and, in extreme cases, cause spontaneous combustion.
• Do not charge the battery frequently. When working with the device, allow the device battery to discharge to 20% -30%, and only then charge it again. Frequent charging of a charged battery will degrade its properties.
• Do not store your device with a battery in low temperatures. At temperatures of 0°C (32°F) and below, there is an enhanced self-discharge of the battery and deterioration of the battery's ability to store energy. 
• Do not charge your device in temperatures below 0°C (32°F). 
• Dispose of the battery if it no longer retains its capacity, according to the regulations governing the disposal of lithium-ion batteries in your country. Do not store the battery after it has lost its properties. 
• When flying by air, carry the Theta-Meter Bluetooth e-meter in the cabin, do not check it in your luggage. 

If you plan not to use this device for a long time, to preserve the battery capacity, charge (or discharge) it to 40-50% of the maximum capacity. Storing the battery in a fully charged or fully discharged state will degrade the performance of the battery.
You can read more about lithium-ion batteries here: https://en.wikipedia.org/wiki/Lithium-ion_battery 

Battery replacement
If the battery properties noticeably deteriorate, you can replace it yourself with the same battery model or one similar in characteristics. Disconnect the device from the USB cable if it was connected. Take a Phillips screwdriver, unscrew the M3 screw on the can holding the black cap. After that, holding the can with one hand and twisting the lid 10 ° -15 ° to the right and left with the other hand, pull the cap together with the printed circuit board out of the can. Remove the old battery from the battery holder and replace it with a new battery. Insert the cap, precisely aligning the hole on the cap and the hole on the can for the M3 screw. Insert the M3 screw and tighten it with a screwdriver, without using force when tightening.
Dispose of the battery according to the recycling regulations for lithium-ion batteries in your country, or take it to your nearest collection point for battery waste.

GETTING STARTED WITH THE DEVICE

Working with USB e-meters:
1. Turn on your computer, laptop, tablet, or phone
2. Connect cans or solocans to the e-meter, if applicable to your e-meter.
3. Connect the USB meter using a USB cable or directly into the USB port of your device in the case of Theta-Meter 3G nano.
4. Download and install Theta-Meter (various versions) from https://theta-meter.ru/downloads, or AppStore for macOS, or Google Play for Android.
5. Go to the program settings and select the USB meter device type.
6. Pick up the cans or a solocan - the needle should move. The device is working.

For instructions on connecting Bluetooth and Wi-Fi e-meters, see the website page with the description of a specific device, as well as in the Video section of the website. 

CUSTOMER SUPPORT
Should you have any difficulties connecting or using your Theta Meter, please do not hesitate to contact our technical support team for assistance using the form below.