1. መግቢያ
This manual provides detailed instructions for the Apera Instruments GroStar Series GS3 EC/ppm Pen Tester Kit (AI103G). This lab-grade conductivity meter is designed for accurate measurement of EC (Electrical Conductivity), 500ppm, and 700ppm, along with temperature, making it suitable for hydroponics and general water quality testing. The device features a replaceable titanium conductivity sensor and a user-friendly interface.
2. ምርት አብቅቷልview
The GroStar Series GS3 EC/ppm Pen Tester is engineered for reliability and ease of use. Key features include:
- Measures conductivity (EC), 500ppm, 700ppm, and temperature.
- Replaceable titanium sensor for high accuracy in the 0 to 10 EC range.
- Backlit HD screen for clear readings.
- Grower-friendly calibration workflow with a calibration reminder function.

Figure 1: Apera Instruments GroStar Series GS3 EC/ppm Pen Tester.

ምስል 2: መቀራረብ view of the durable titanium alloy sensor for conductivity measurements.

Figure 3: The GroStar GS3 Pen Tester demonstrating its water resistance during use.
3. ማዋቀር
Before first use, ensure all components are present and the device is ready for operation.
3.1 በሳጥኑ ውስጥ ያለው
- Apera Instruments GroStar Series GS3 EC/ppm Pen Tester (Gen II)
- 2.77 EC Calibration Solution
- ላንያርድ
- 4 የ AAA ባትሪዎች (ቀድሞ የተጫኑ ወይም ለብቻው የተካተቱ)

Figure 4: The complete kit contents, including the tester, calibration solution, and lanyard.
3.2 የባትሪ ጭነት
The device requires 4 AAA batteries. If not pre-installed, open the battery compartment located at the top of the tester, insert the batteries according to the polarity indicators, and securely close the compartment.
3.3 የመጀመሪያ ዝግጅት
- መከላከያውን ከዳሳሹ ላይ ያስወግዱ.
- Rinse the sensor with distilled or deionized water.
- Gently shake off excess water.
4. የአሠራር መመሪያዎች
4.1 ማብራት / ማጥፋት
የሚለውን ይጫኑ ኃይል button to turn the tester on or off.
4.2 መለካት
- Ensure the tester is clean and calibrated.
- ዳሳሹን ወደ s ውስጥ አስገባampመፍትሄውን በመጠቀም ዳሳሹ ሙሉ በሙሉ በውሃ ውስጥ መጠመቁን ማረጋገጥ።
- በቀስታ ያዋህዱ እና ንባቡ በማሳያው ላይ እስኪረጋጋ ድረስ ይጠብቁ።
- The display will show EC/ppm and temperature readings.
4.3 Switching Measurement Modes (EC/ppm)
የሚለውን ይጫኑ MODE/UNITS button to cycle through EC, 500ppm, and 700ppm measurement modes.

Figure 5: The tester's display cycling through different measurement units.
4.4 ተግባርን ይያዙ
የሚለውን ይጫኑ ያዝ በማሳያው ላይ ያለውን የአሁኑን ንባብ ለማቀዝቀዝ አዝራሩን ይጫኑ። ለመልቀቅ እንደገና ይጫኑ።
4.5 TruRead Display
The TruRead display provides MAX, AVG, and MIN readings, offering a comprehensive view of your measurements.

Figure 6: The TruRead display feature, showing maximum, average, and minimum recorded values.
5. መለካት
Regular calibration ensures accurate measurements. The GS3 features a grower-friendly calibration workflow and a reminder function.
5.1 የመለኪያ ሂደት
- ሞካሪውን ያብሩ።
- የሚለውን ይጫኑ CAL የማስተካከያ ሁነታን ለማስገባት አዝራር።
- Immerse the sensor into the 2.77 EC calibration solution.
- The tester will automatically recognize the solution and calibrate. Wait for the stable reading and confirmation.
- Rinse the sensor with distilled water after calibration.

Figure 7: Visual representation of the tester's display in measurement, calibration, and error states.
5.2 Calibration Reminder
The tester will automatically remind you when recalibration is due, ensuring consistent accuracy.
6. ጥገና
6.1 ዳሳሹን ማጽዳት
After each use, rinse the sensor thoroughly with distilled or deionized water to prevent residue buildup. Do not scrub the sensor vigorously.
6.2 ማከማቻ
Always replace the protective cap after use. For long-term storage, ensure the sensor is kept moist. Refer to the product packaging or Apera Instruments website for specific storage solution recommendations if applicable.
6.3 ዳሳሹን በመተካት
The titanium EC sensor is replaceable. If the sensor performance degrades significantly or it becomes damaged, a new sensor can be purchased and easily installed by twisting off the old one and attaching the new one.
7. መላ መፈለግ
| ችግር | ሊሆን የሚችል ምክንያት | መፍትሄ |
|---|---|---|
| ትክክለኛ ያልሆኑ ንባቦች | Sensor is dirty or dry; Calibration is outdated or incorrect; Damaged sensor. | Clean the sensor; Recalibrate the tester; Replace the sensor if damaged. |
| ሞካሪው አይበራም | የሞቱ ባትሪዎች፤ የባትሪው የተሳሳተ ጭነት። | ባትሪዎችን ይተኩ፤ የባትሪውን ፖላራይት ያረጋግጡ። |
| "CAL Er" error during calibration | Incorrect calibration solution; Contaminated solution; Sensor issue. | Ensure correct 2.77 EC solution is used; Use fresh calibration solution; Clean or replace sensor. |
8. ዝርዝሮች
- የሞዴል ቁጥር፡- AI103G
- የምርት መጠኖች: 7 x 1.5 x 1.3 ኢንች
- ክብደት፡ 4.69 አውንስ
- የኃይል ምንጭ፡- 4 AAA ባትሪዎች (ተጨምሯል)
- ዳሳሽ ዓይነት፡- Replaceable Titanium EC Probe
- የመለኪያ መለኪያዎች EC, 500ppm, 700ppm, Temperature
- መጀመሪያ የሚገኝ ቀን፡- ሴፕቴምበር 28፣ 2022
9. ዋስትና እና ድጋፍ
Apera Instruments products are backed by a manufacturer's warranty. For detailed warranty information, technical support, or to purchase replacement parts, please visit the official Apera Instruments webጣቢያ ወይም በቀጥታ የደንበኛ አገልግሎታቸውን ያግኙ። ለዋስትና ጥያቄዎች የግዢ ደረሰኝዎን ያስቀምጡ።
አምራች፡ አፔራ መሳሪያዎች





