IFM LMT121 - Sensor for Point Level Detection

Q: What measuring principle does the IFM LMT121 use and for which media?

The LMT121 is a capacitive point level sensor for liquids, pasty media and powder.

Q: What outputs does the IFM LMT121 provide?

The LMT121 has a PNP/NPN electrical design with 2 outputs and a parameterisable normally open / normally closed function, providing switching signal and IO-Link.

Q: Does the IFM LMT121 support IO-Link?

Yes; the LMT121 supports IO-Link revision 1.1, COM2 (38.4 kBaud) per IEC 61131-9, with SIO mode, a minimum cycle time of 2.3 ms, and 1 analogue plus 2 binary process data channels.

Q: What is the operating voltage and response time of the IFM LMT121?

The LMT121 operates on 18...30 V DC with a current consumption of < 50 mA and a response time of < 0.5 s.

Q: What are the temperature and pressure ratings of the IFM LMT121?

The LMT121 has an ambient temperature range of -40...85 C, a medium temperature range of -40...100 C (short-term -40...150 C for 1 hour), and a pressure rating of 40 bar / 4 MPa.

Q: What are the wetted materials of the IFM LMT121?

The LMT121 wetted parts are PEEK, with overall materials of stainless steel (316L/1.4404), PEEK, PEI and FKM.

Q: What is the process connection of the IFM LMT121?

The LMT121 uses a G 1/2 sealing cone threaded process connection with an 11 mm probe length.

Q: What IP rating and indicators does the IFM LMT121 have?

The LMT121 is rated IP 68 and IP 69K with a yellow switching status LED and a green operating status LED; connection is via M12 A-coded connector with gold-plated contacts.

SKULMT121BrandIFM

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IFM LMT121 Point Level Sensor — hygienic G1/2 point level sensor, 11 mm probe, IO-Link, foam/deposit suppression. Capacitive point level, 2 PNP/NPN outputs, G1/2 sealing cone, 11 mm probe, IO-Link, 18...30 V DC, IP68/IP69K, medium -40...100 °C.

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MPN / SKU: LMT121

Also known as: IFM LMT121 level sensor / level switch.

LMT121 Applications

The IFM LMT121 is used for reliable point level control in tanks and containers in the food, beverage and hygienic process industries. It is suited for overflow prevention, leakage detection and run-dry protection with liquid, viscous and powder media. Parameterisation of the two switching outputs allows different media to be distinguished and reliably suppresses deposits and foam, while IO-Link provides user-friendly setup, diagnostics and the hygienic G1/2 sealing-cone design meets cleanability requirements.

LMT121 Specifications

Brand	IFM	Product Type	Sensor for point level detection
IFM Type Code	LMACE-A12E-QSKG-2/US	Measuring Principle	Capacitive
Outputs	2 x digital (PNP/NPN), N/O-N/C parameterisable + IO-Link	Process Connection	G 1/2 sealing cone
Probe Length	11 mm	Communication	IO-Link 1.1 (COM2, 38.4 kBaud)
Operating Voltage	18...30 V DC	Current Consumption	< 50 mA
Medium Temperature	-40...100 °C (150 °C, 1 h)	Tank Pressure	-1...40 bar
Protection Rating	IP 68 / IP 69K	Ambient Temperature	-40...85 °C
Wetted Materials	Stainless steel 316L, PEEK, FKM	Electrical Connection	M12 connector, A-coded, 4 gold-plated contacts
Weight	211 g

LMT121 Datasheet & Manual

Download Datasheet & ManualIFM LMT121 · PDF · Official IFM document

LMT121 – Frequently Asked Questions (FAQ)

What measuring principle does the IFM LMT121 use and for which media?

The LMT121 is a capacitive point level sensor for liquids, pasty media and powder.

What outputs does the IFM LMT121 provide?

The LMT121 has a PNP/NPN electrical design with 2 outputs and a parameterisable normally open / normally closed function, providing switching signal and IO-Link.

Does the IFM LMT121 support IO-Link?

Yes; the LMT121 supports IO-Link revision 1.1, COM2 (38.4 kBaud) per IEC 61131-9, with SIO mode, a minimum cycle time of 2.3 ms, and 1 analogue plus 2 binary process data channels.

What is the operating voltage and response time of the IFM LMT121?

The LMT121 operates on 18...30 V DC with a current consumption of < 50 mA and a response time of < 0.5 s.

What are the temperature and pressure ratings of the IFM LMT121?

The LMT121 has an ambient temperature range of -40...85 C, a medium temperature range of -40...100 C (short-term -40...150 C for 1 hour), and a pressure rating of 40 bar / 4 MPa.

What are the wetted materials of the IFM LMT121?

The LMT121 wetted parts are PEEK, with overall materials of stainless steel (316L/1.4404), PEEK, PEI and FKM.

What is the process connection of the IFM LMT121?

The LMT121 uses a G 1/2 sealing cone threaded process connection with an 11 mm probe length.

What IP rating and indicators does the IFM LMT121 have?

The LMT121 is rated IP 68 and IP 69K with a yellow switching status LED and a green operating status LED; connection is via M12 A-coded connector with gold-plated contacts.