P18 - Measurement PCE Instruments - Free user manual and instructions
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| Product Type | Portable pH Meter |
| Measurement Range | pH 0.00 to 14.00 |
| Resolution | pH 0.01 |
| Accuracy | ±0.05 pH |
| Temperature Measurement | 0 to 50 °C |
| Temperature Resolution | 0.1 °C |
| Calibration | Automatic, 1 or 2-point |
| Display | LCD |
| Power Supply | 2 x 1.5V LR44 button cells |
| Battery Life | Approx. 100 hours |
| Dimensions | 150 x 30 x 20 mm |
| Weight | 50 g |
| Ingress Protection | IP65 |
| Automatic Temperature Compensation | Yes |
| Housing Material | ABS plastic |
| Electrode Type | Replaceable pH electrode |
| Maintenance | Rinse electrode with distilled water after each use |
| Storage | Keep electrode moist with storage cap or solution |
| Safety | Do not immerse beyond the rated IP65 depth |
| Spare Parts | pH electrode, batteries, calibration buffers |
| Repairability | Electrode and batteries are user-replaceable |
| Applications | Water quality, aquariums, pools, laboratories |
| Included Accessories | pH meter, electrode, calibration buffer sachets, manual |
Frequently Asked Questions - P18 PCE Instruments
How do I calibrate the P18 pH meter?
To calibrate, place the electrode in a buffer solution of pH 4.01, 6.86, or 9.18 and press the CAL button. The meter automatically recognizes the buffer and adjusts. For best accuracy, use two-point calibration.
How often should I calibrate the P18?
It is recommended to calibrate before each use or at least once daily for frequent measurements. If the electrode has been stored dry, recalibrate after reconditioning.
Can I measure temperature with the P18?
Yes, the P18 features a built-in temperature sensor that measures from 0 to 50 °C and provides automatic temperature compensation for pH readings.
How do I replace the pH electrode?
To replace, carefully unscrew the electrode collar and detach the old electrode. Insert the new electrode, ensuring the O-ring is properly sealed, then reattach the collar. Rinse and calibrate before use.
What is the battery life and how do I replace batteries?
The P18 uses 2 LR44 button cells with approximately 100 hours of operation. To replace, slide off the battery compartment cover, remove the old batteries, insert new ones with correct polarity, and close the cover.
Can the P18 be used for hot liquids?
The P18 is designed for temperatures between 0 and 50 °C. Exceeding this range may damage the electrode and the meter. For hot liquids, use a separate high-temperature sensor.
How should I store the pH meter when not in use?
Rinse the electrode with distilled water, then store it with the protective cap containing a few drops of storage solution or pH 4 buffer. Do not store it dry, as this will damage the electrode.
What is the accuracy of the pH measurement?
The P18 has an accuracy of ±0.05 pH under normal operating conditions, ensuring reliable readings for most laboratory and field applications.
Is the P18 waterproof?
The meter has an IP65 rating, meaning it is protected against dust and low-pressure water jets. It is not fully submersible. Do not immerse beyond the specified depth.
What spare parts are available for the P18?
Available spare parts include replacement pH electrodes, batteries, calibration buffer sachets, and electrode storage solution. These are user-replaceable with minimal effort.
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USER MANUAL P18 PCE Instruments
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Product information
Brand : PCE Instruments
Model : P18
Category : Measurement