1. परिचय
The Testo 205 is a robust handheld pH and temperature measuring instrument designed for use in semi-solid media. It is particularly suitable for applications in food production, such as monitoring the quality and maturation of meat in butcher shops, slaughterhouses, and the meat-processing industry. This manual provides essential information for the proper setup, operation, and maintenance of your Testo 205 device.
Figure 1: The Testo 205 Handheld T-bar pH Meter, showing its display and controls.
2. प्रमुख वैशिष्ट्ये
- Simultaneous measurement of pH value and temperature in semi-solid media.
- Integrated temperature sensor for automatic temperature compensation, ensuring accurate pH readings.
- Maintenance-free pH probe with gel electrolyte, designed to be leak-proof and resistant to dirt.
- Hole diaphragm on the pH probe for quick and reliable measurements.
- User-replaceable combined pH measuring tip and temperature probe.
- Two-line, illuminated LCD display showing both pH and temperature readings.
- Automatic final value recognition (auto-hold function) with an audible advisory tone when readings stabilize.
- Storage cap filled with gel electrolyte to maintain probe hydration and extend its lifespan.
- Includes a belt/wall bracket for secure storage.
- Supports one, two, or three-point calibration.
५. सेटअप आणि प्रारंभिक वापर
3.1. बॅटरी इन्स्टॉलेशन
The Testo 205 uses 4 x LR44 button cell batteries. To install or replace batteries:
- डिव्हाइसच्या मागील बाजूस बॅटरी कंपार्टमेंट कव्हर शोधा.
- Open the cover using a suitable tool (e.g., a small screwdriver or coin).
- Insert the 4 LR44 button cell batteries, ensuring correct polarity.
- बॅटरी कंपार्टमेंट कव्हर सुरक्षितपणे बंद करा.
3.2. Preparing the pH Probe
Before first use, or after prolonged storage, ensure the pH probe is properly conditioned.
- Remove the storage cap from the pH probe. The cap contains gel electrolyte to keep the probe hydrated.
- Rinse the probe tip with distilled water.
- Proceed with calibration as described in Section 4.1.
4. ऑपरेटिंग सूचना
4.1. कॅलिब्रेशन
Regular calibration is crucial for accurate pH measurements. The Testo 205 supports one, two, or three-point calibration using buffer solutions.
- दाबा चालू/होल्ड डिव्हाइस चालू करण्यासाठी बटण.
- दाबा CAL कॅलिब्रेशन मोडमध्ये प्रवेश करण्यासाठी बटण.
- Immerse the pH probe into the first calibration buffer solution (e.g., pH 7.00). Ensure the probe tip is fully submerged.
- The device will automatically detect the buffer and begin calibration. Wait for the reading to stabilize and the device to confirm calibration (e.g., by displaying "CAL OK" or a stable value).
- डिस्टिल्ड पाण्याने प्रोब स्वच्छ धुवा.
- For two or three-point calibration, repeat steps 3-5 with additional buffer solutions (e.g., pH 4.01 and pH 10.01).
- Exit calibration mode by pressing the CAL button again or waiting for automatic exit.
टीप: For economical use of calibration solution, Testo offers calibration dosing bottles with integrated dosing apertures.
4.2. मोजमाप घेणे
To measure pH and temperature in semi-solid media:
- Ensure the device is calibrated and the probe is clean.
- दाबा चालू/होल्ड डिव्हाइस चालू करण्यासाठी बटण.
- Carefully insert the pH probe into the semi-solid medium (e.g., meat). Ensure good contact and sufficient depth for accurate readings.
- The illuminated display will show both the pH value and temperature simultaneously.
- The automatic final value recognition (auto-hold) will capture the reading once it stabilizes. An advisory tone will sound to indicate stability.
- To manually hold a reading, press the चालू/होल्ड button during measurement. Press again to release.
- After measurement, rinse the probe thoroughly with distilled water.
Figure 2: The Testo 205 being used to measure the pH of a semi-solid food product, demonstrating its application.
4.3. मोड बटण
द मोड button allows you to switch between different display modes or access additional functions, if available. Refer to the on-screen prompts for specific options.
5. देखभाल
5.1. Probe Cleaning and Storage
Proper cleaning and storage are essential for maintaining the accuracy and lifespan of the pH probe.
- प्रत्येक वापरानंतर: Rinse the pH probe thoroughly with distilled water to remove any residue from the measured medium.
- स्टोरेजसाठी: Always place the storage cap, filled with gel electrolyte, back onto the pH probe. This prevents the probe from drying out and ensures its readiness for future measurements.
- खोल स्वच्छता: If the probe becomes heavily soiled, consult specialized cleaning solutions for pH electrodes. Avoid abrasive materials.
5.2. Replacing the pH Probe
The combined pH measuring tip with temperature probe is user-replaceable. If the probe's performance degrades significantly despite proper cleaning and calibration, it may need replacement.
- Gently twist and pull the old probe assembly from the main unit.
- Align the new probe assembly with the connector on the main unit.
- Push and twist gently until the new probe is securely attached.
- After replacing the probe, perform a full calibration as described in Section 4.1.
5.3. बॅटरी बदलणे
When the battery indicator appears on the display, replace the batteries as described in Section 3.1.
6. समस्या निवारण
| समस्या | संभाव्य कारण | उपाय |
|---|---|---|
| Inaccurate pH readings | Probe not calibrated; dirty probe; dried-out probe; expired buffer solutions; damaged probe. | Perform calibration (Section 4.1); clean probe (Section 5.1); rehydrate probe in storage solution; use fresh buffer solutions; replace probe (Section 5.2). |
| मंद प्रतिसाद वेळ | Dirty probe; dried-out probe; low battery. | Clean probe (Section 5.1); rehydrate probe; replace batteries (Section 3.1). |
| डिव्हाइस चालू होत नाही | बॅटरीज बंद पडल्या आहेत; चुकीची बॅटरी बसवणे. | बॅटरी बदला (विभाग ४.१); बॅटरीची ध्रुवीयता तपासा. |
| Display shows "Err" or similar error message | Probe issue; internal fault. | Check probe connection; try cleaning/recalibrating; if problem persists, contact Testo support. |
7. तांत्रिक तपशील
| पॅरामीटर | मूल्य |
|---|---|
| pH - Electrode | |
| मापन श्रेणी | 0 ते 14 pH |
| अचूकता | ±0.02 pH |
| ठराव | 0.01 पीएच |
| Temperature - NTC | |
| मापन श्रेणी | 0 to +60 °C (Short-term to +80 °C max. 5 min) |
| अचूकता | ±0.4 °C |
| ठराव | 0.1 °C |
| सामान्य तांत्रिक डेटा | |
| स्टोरेज तापमान | -20 ते +70 ° से |
| ऑपरेटिंग तापमान | 0 ते +50 ° से |
| वजन | 135 ग्रॅम |
| परिमाण (L x W x H) | 145 x 38 x 167 मिमी |
| बॅटरी प्रकार | 4 x Button cell LR44 |
| बॅटरी आयुष्य | 80 h (Auto Off 10 Min) |
| डिस्प्ले प्रकार | LCD, 2 lines |
8. हमी आणि समर्थन
8.1. वॉरंटी माहिती
Testo products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Testo webसाइट. वॉरंटी दाव्यांसाठी तुमचा खरेदीचा पुरावा ठेवा.
8.2. ग्राहक समर्थन
If you encounter any issues not covered in this manual or require further assistance, please contact Testo customer support. Contact details can typically be found on the Testo webसाइट किंवा उत्पादन पॅकेजिंगमध्ये.
अधिक माहितीसाठी, भेट द्या Testo Store on Amazon.
