GMH 3750 - Thermometer Greisinger - Free user manual and instructions
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| Type | Thermometer |
| Brand | Greisinger |
| Model | GMH 3750 |
| Category | Thermometer |
| Measurement Range | -200 to +850 °C |
| Resolution | 0.01 °C |
| Accuracy | ±0.05 °C (at 0 °C) |
| Sensor Input | Pt100 (4-wire) |
| Display | LCD, 4½ digits |
| Data Logging | Up to 99 values |
| Interface | RS232 |
| Power Supply | 9V battery or optional rechargeable |
| Auto-Off | Adjustable (1 to 120 min) |
| Dimensions | 135 x 67 x 28 mm |
| Weight | 195 g (with battery) |
| Housing | ABS plastic |
| Protection Class | IP40 |
| Min/Max Memory | Yes |
| Hold Function | Yes |
| Calibration | Factory calibration, optional certificate |
| Maintenance | Clean with dry cloth; no solvents |
| Safety | EN 61010-1, overvoltage category II |
| Repairability | Replaceable battery, fuse; service center for repairs |
Frequently Asked Questions - GMH 3750 Greisinger
How do I change the battery in the GMH 3750?
Open the battery compartment on the back, remove the old 9V battery, and insert a new one with correct polarity. Close the compartment securely.
Can I connect the GMH 3750 to a PC?
Yes, via the RS232 interface. Use an optional adapter and the GSOFT software for data transfer and analysis.
What probe does the GMH 3750 use?
It accepts Pt100 sensors with 4-wire connection. The device automatically recognizes the probe type.
Is the GMH 3750 waterproof?
No, it has IP40 protection which is splash-proof but not submersible. Avoid exposure to rain or liquids.
How often should I calibrate the thermometer?
Annual calibration is recommended for high-precision applications. The device has a factory calibration; optional certificates are available.
What is the data logging capacity?
It can store up to 99 measured values manually or at set intervals via the interface.
How do I perform a min/max measurement?
Press the MIN/MAX button to start recording. The display shows the minimum and maximum values since activation. Press again to clear.
Can I use the GMH 3750 for air temperature measurement?
Yes, with a suitable Pt100 air probe. The device supports various probe types for different applications.
What does the hold function do?
The HOLD function freezes the current reading on the display for easy recording. Press HOLD to toggle.
Where can I find the user manual?
The manual is available for free download on the manufacturer's website and on notice-facile.com in PDF format.
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