The IFM LMT104 is a long-probe capacitive point level sensor designed for monitoring liquids, viscous media, and powders in deeper vessels. It provides a 153 mm probe length and a G1/2 sealing-cone process connection. Two configurable digital outputs and IO-Link 1.1 provide flexible integration with industrial automation systems. The sensor supports medium temperatures up to 100 °C and short-time exposure up to 150 °C for one hour. Its stainless-steel construction, PEEK sensing components, and IP68/IP69K protection make it suitable for demanding process environments.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The LMT104 provides a 153 mm insertion probe for applications where the sensing point is deeper inside a tank or vessel. Its extended construction allows point level detection away from the process connection. The sensor uses capacitive technology to detect suitable liquids, viscous media, and powders. It is factory preset for water-based media. IO-Link allows further parameterisation when different media characteristics need to be accommodated.
Two digital outputs provide configurable switching signals for automated level control. Normally open and normally closed functions can be parameterised according to system requirements. IO-Link communication provides access to process data and device parameters. The sensor has a response time below 0.5 seconds. This supports fast reaction to level changes in automated processes.
The LMT104 combines stainless steel 316L and 316Ti components with PEEK, PEI, and FKM materials. The wetted construction is designed for process environments where chemical resistance and cleanability are important. The sensor supports tank pressure up to 40 bar. IP68 and IP69K protection provide high resistance to water ingress and intensive cleaning. Gold-plated M12 contacts provide a reliable connection to the control system.
Deep tank level monitoring
Process vessel monitoring
Water-based liquid detection
Overflow prevention
Pump dry-run protection
Viscous media detection
Powder level monitoring
153 mm probe length
Capacitive measuring principle
Two digital outputs
PNP/NPN electrical design
NO/NC configurable outputs
IO-Link 1.1
COM2 38.4 kBaud
Factory preset for water-based media
18…30 V DC supply
Response time <0.5 s
G1/2 sealing-cone connection
Stainless steel 316L/316Ti construction
PEEK sensing material
IP68/IP69K protection
Gold-plated M12 contacts
The LMT104 should be installed using an appropriate G1/2 sealing-cone process connection. The 153 mm probe should be positioned so that its sensing region corresponds to the required monitoring level. Adequate clearance should be maintained around the sensing area for reliable detection. IO-Link can be used to configure the device and verify its operating parameters. Regular inspection of the process connection and probe condition is recommended.
The extended probe length makes the LMT104 particularly useful for deeper tanks and vessels. It can monitor a point level that cannot be reached effectively with short-probe sensors. The capacitive measuring principle provides reliable presence detection for compatible process media. Two switching outputs allow the sensor to participate in control and protection functions. Its rugged construction supports continuous operation in demanding industrial environments.
| Specification | Details |
|---|---|
| Model | LMT104 |
| Product type | Point level detection sensor |
| Order code | LMDCE-A12E-QSKG-2/US |
| Measuring principle | Capacitive |
| Probe length | 153 mm |
| Process connection | G1/2 sealing cone |
| Media | Liquids, viscous media, powder |
| Recommended media | Water, water-based media, oils, oil-based media, powder |
| Factory setting | Water-based media |
| Tank pressure | -1…40 bar |
| CRN MAWP | 40 bar / 4 MPa |
| Medium temperature | -20…100 °C |
| Short-time medium temperature | -20…150 °C for 1 h |
| Operating voltage | 18…30 V DC |
| Current consumption | <50 mA |
| Protection class | III |
| Reverse polarity protection | Yes |
| Number of digital outputs | 2 |
| Output signal | Switching signal / IO-Link |
| Electrical design | PNP/NPN |
| Output function | NO/NC parameterisable |
| Voltage drop | 2.5 V |
| Continuous output current | 100 mA |
| Short-circuit protection | Yes, pulsed |
| Overload protection | Yes |
| Response time | <0.5 s |
| IO-Link revision | 1.1 |
| IO-Link transmission | COM2, 38.4 kBaud |
| Minimum process cycle | 2.3 ms |
| Ambient temperature | -20…85 °C |
| Storage temperature | -40…85 °C |
| Protection rating | IP68 / IP69K |
| Dimensions | Ø30 × 255 mm |
| Weight | 321.5 g |
| Housing materials | Stainless steel 316L/316Ti, PEEK, PEI, FKM |
| Wetted materials | Stainless steel 316L/316Ti, PEEK, FKM |
| Electrical connection | M12 A-coded, gold-plated contacts |
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