1. Sarrera
This manual provides essential information for the safe and efficient operation of your GREISINGER GMH 3531 pH/Redox/Temperature Meter. Please read these instructions carefully before using the device and keep them for future reference. The GMH 3531 is designed for precise measurement of pH, Redox potential, and temperature in various applications.
2. Segurtasun-argibideak
- Always operate the device within the specified environmental conditions.
- Ez jarri gailua muturreko tenperatura, hezetasun edo eguzki-argitara.
- Saihestu gailua kolpe gogorrak erortzea edo jasaten.
- Only use original accessories and probes supplied or approved by GREISINGER.
- Do not attempt to open or repair the device yourself. Refer all servicing to authorized personnel.
- Mantendu gailua eta bere osagarriak haurren eskura.
- Tokiko araudien arabera bota bateriak eta gailua.
3. Paketearen edukia
Paketatzean, egiaztatu behean zerrendatutako elementu guztiak daudela eta kalterik gabe daudela:
- GREISINGER GMH 3531 pH/Redox/Temperature Meter
- Funtzionamendu eskuliburua
- pH electrode (if included in specific model variant)
- Temperature probe (if included in specific model variant)
- Batteries (installed or separate)

Image: The GREISINGER GMH 3531 pH/Redox/Temperature Meter, showing its compact design and display. This image illustrates the main unit of the device.
4. Konfigurazioa
4.1. Bateriaren instalazioa
- Open the battery compartment cover located on the rear of the device.
- Insert the specified batteries, ensuring correct polarity (+/-).
- Itxi bateriaren konpartimenduaren estalkia ondo.
4.2. Zundaren konexioa
- Connect the pH electrode to the designated BNC connector on the device. Ensure a firm connection.
- Connect the temperature probe to its dedicated input jack.
- Ensure all connections are clean and dry before use.
5. Funtzionamendu-argibideak
5.1. Piztu/Itzaltzea
Sakatu ON/OFF button to power on the device. Press and hold the ON/OFF button for approximately 3 seconds to power off.
5.2. Kalibrazioa
Regular calibration is crucial for accurate measurements. Refer to the specific calibration procedure for pH and Redox measurements outlined below.
5.2.1. pH-aren Kalibrazioa
- Prepare fresh pH buffer solutions (e.g., pH 4.00, 7.00, 10.00).
- Rinse the pH electrode thoroughly with distilled water and blot dry.
- Immerse the electrode in the first buffer solution (e.g., pH 7.00).
- Enter calibration mode as per the device's menu.
- Follow on-screen prompts to confirm the buffer value.
- Repeat for subsequent buffer solutions.
5.2.2. Redox Calibration
Redox electrodes typically do not require calibration in the same way as pH electrodes. However, their functionality can be checked using a known Redox test solution.
5.3. Neurketak hartzea
- Ziurtatu gailua kalibratuta dagoela.
- Rinse the probe(s) with distilled water and blot dry.
- Immerse the probe(s) into the sample solution. Ensure the sensing part of the probe is fully submerged.
- Utzi irakurketa pantailan egonkortzen.
- Record the measurement.
- After measurement, rinse the probe(s) thoroughly and store according to maintenance guidelines.
6. Mantentzea
6.1. Gailua garbitzea
Wipe the device housing with a soft, damp oihalik. Ez erabili garbitzaile edo disolbatzaile urratzailerik. Ziurtatu likidorik ez dela sartzen gailuaren irekiduretan.
6.2. Probe Care and Storage
- pH elektrodoa: Always keep the pH electrode wet. Store it in a suitable storage solution (e.g., 3M KCl solution or pH 4 buffer). Never store in distilled water.
- Erredox elektrodoa: Store in a suitable storage solution or distilled water if not used for extended periods.
- Tenperatura-zunda: Clean with distilled water after each use.
- Regularly inspect probes for damage or contamination.
6.3. Bateria ordezkatzea
Ordeztu bateriak bateria baxuaren adierazlea pantailan agertzen denean. Ikusi 4.1 atala bateria instalatzeko argibideak lortzeko.
7. Arazoak
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Pantailarik ez / Gailua ez da pizten | Bateria hutsik edo gaizki instalatuta | Egiaztatu bateriaren polaritatea; ordezkatu bateriak. |
| Irakurketa ezegonkorrak | Dirty or damaged probe; insufficient immersion; air bubbles; incorrect calibration | Clean probe; ensure proper immersion; remove air bubbles; recalibrate. |
| Incorrect pH readings | Expired buffer solutions; dirty/damaged pH electrode; incorrect calibration | Use fresh buffer solutions; clean/replace electrode; recalibrate. |
| "Errorea" mezua pantailan | Probe fault; internal device error | Check probe connection and condition. If error persists, contact support. |
8. Zehaztapenak
| Parametroa | Balioa |
|---|---|
| Eredua | GMH 3531 (603925) |
| Measurement Range pH | Normalean 0.00 eta 14.00 pH artean |
| Measurement Range Redox | Typically -1999 to +1999 mV |
| Measurement Range Temperature | Typically -5.0 to +100.0 °C |
| Zehaztasuna pH | ±0.02 pH (depending on probe) |
| Zehaztasuna Tenperatura | ±0.2 °C (depending on probe) |
| Elikatze Hornidura | Battery operated (e.g., 9V block battery or AA batteries) |
| Pisua | 170 Grams (without probes) |
Note: Specific ranges and accuracies may vary slightly based on the exact probe used and environmental conditions. Refer to your probe's documentation for detailed specifications.
9. Bermea eta Laguntza
9.1. Bermearen informazioa
GREISINGER products are manufactured to high quality standards. This device comes with a standard manufacturer's warranty against defects in materials and workmanship. The warranty period typically begins from the date of purchase. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, please refer to the official GREISINGER webgunearekin edo jarri harremanetan zure tokiko banatzailearekin.
9.2. Laguntza Teknikoa
Should you encounter any issues not covered in the troubleshooting section, or require further assistance, please contact GREISINGER technical support or your authorized dealer. Provide your model number (GMH 3531) and a detailed description of the problem when seeking support.
GREISINGER Contact Information:
Official GREISINGER Webgunea







