GCO 100 - Measuring equipment Greisinger - Free user manual and instructions
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| Product Type | Conductivity/TDS Meter |
| Model | GCO 100 |
| Brand | Greisinger |
| Dimensions (L x W x H) | 148 x 78 x 33 mm |
| Weight | 200 g (with batteries) |
| Power Supply | 4 x AAA batteries (1.5 V) |
| Display | LCD with backlight, 3.5-digit |
| Measurement Range (Conductivity) | 0 - 2000 µS/cm |
| Measurement Range (TDS) | 0 - 1000 ppm |
| Accuracy | ±1% of reading |
| Temperature Compensation | Automatic (0-50 °C) |
| Functions | Data hold, auto-off, min/max recording |
| Calibration | Automatic calibration with standard solution |
| Housing Protection | IP67 waterproof |
| Probe | Replaceable conductivity cell |
| Maintenance | Rinse probe with distilled water after use |
| Safety | CE compliant |
| Repairability | Service available at authorized centers; spare parts accessible |
| Included Accessories | Probe, batteries, carrying case, manual |
Frequently Asked Questions - GCO 100 Greisinger
How do I calibrate the GCO 100?
Calibrate using a standard conductivity solution of known value. Immerse the probe, press the CAL button, and follow the display prompts. Use a 1413 µS/cm solution for best accuracy.
What type of batteries does it use?
The GCO 100 uses 4 x AAA 1.5V alkaline batteries. Replace when the low battery indicator appears.
How do I replace the probe?
Unscrew the old probe from the meter body, attach the new probe by screwing it on carefully. Ensure the O-ring is properly seated to maintain IP67 waterproofing.
What is the measurement range for conductivity?
The conductivity measurement range is 0–2000 µS/cm. For higher ranges, consider using a different model.
Why does the display show 'Err'?
An 'Err' message indicates the measurement is out of range or the probe is not properly connected. Check the probe connection and ensure the sample is within the specified range.
Can the meter be used for pH measurement?
No, the GCO 100 is specifically designed for conductivity and TDS measurement only. For pH, use a separate pH meter.
How do I store the meter when not in use?
Store the meter with the probe dry and clean. Keep the storage cap with a few drops of distilled water on the sponge to keep the probe moist. Avoid extreme temperatures.
Is the meter waterproof?
Yes, the housing is rated IP67, meaning it is protected against temporary immersion in water up to 1 meter for 30 minutes.
What is the auto-off function?
The meter automatically turns off after 10 minutes of inactivity to preserve battery life. This can be disabled in the settings.
Where can I get spare parts or service?
Spare parts and service are available through authorized Greisinger service centers. Contact your local distributor or visit the Greisinger website for support.
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