Brand: ABB
Category: Other
Document Type: Manual
Language: EN
Manual for LMT100 & 200
Uploaded: April 20, 2026, 7:56 p.m.
Warranty Information
ABB's warranty is void if the device is used improperly, by unqualified personnel, or with unauthorized alterations.
This manual provides instructions for installing, operating, and troubleshooting the ABB LMT Series of level transmitters, specifically the LMT100 and LMT200 models. The LMT Series are magnetostrictive level transmitters designed for accurate and reliable liquid level measurement in industrial environments. They can be configured for 4-20 mA output with HART digital communication. The manual covers aspects from product description and safety guidelines to installation, wiring, commissioning, operation, and maintenance. Key features include their magnetostrictive principle of operation, modular design, and various probe types for different applications.
Troubleshooting and error codes
| Error Message / Condition | Possible Cause | Remedy |
|---|---|---|
| No HART communication | Incorrect wiring | Check wiring according to Figure 17. |
| Incorrect HART address | Check HART address setting in device configuration. | |
| Low output signal (e.g., < 3.6 mA) | Power supply out of range | Verify power supply is within 12-42 V DC (or as specified for intrinsically safe applications). |
| Sensor malfunction | Refer to "Sensor inspection" in Maintenance section. Contact ABB service if necessary. | |
| High output signal (e.g., > 21 mA) | Power supply out of range | Verify power supply is within 12-42 V DC (or as specified for intrinsically safe applications). |
| Sensor malfunction | Refer to "Sensor inspection" in Maintenance section. Contact ABB service if necessary. | |
| Device not powering on | No power supply | Check power source and wiring. |
| Internal fuse blown (if applicable) | Contact ABB service. | |
| Erratic readings | Float obstruction or incorrect orientation | Check float installation and orientation (refer to Section 5). |
| External magnetic interference | Ensure proper shielding and grounding. Avoid strong magnetic fields near the device. | |
| Probe damage | Refer to "Sensor inspection" in Maintenance section. |