ifm LMT100 Capacitive Point Level Sensor, G 1/2, IO-Link

ifm LMT100 Capacitive Point Level Sensor, G 1/2, IO-Link

The ifm LMT100 is a capacitive point level sensor for tanks, vessels and pipes, preset at the factory for hydrous media. It detects liquid, viscous media and powders with a PEEK probe that is 11 mm long, and it is designed for hygienic duty with a surface roughness of Ra below 0.8 micrometres on the wetted side. Pressure rating in the tank is -1 to 40 bar, and the medium may be as hot as 100 degrees Celsius (150 degrees Celsius for up to one hour), so it survives cleaning cycles.

The housing is stainless steel with IP68 and IP69K protection. Seven Star LLC supplies the LMT100 in Oman and the GCC as an independent supplier in Muscat; quote LMT100 when you ask for an offer.

LMT100 technical specifications

The table lists the values published by the manufacturer for the LMT100. Where a parameter has several operating modes, the headline value is shown; the full parameter list is in the manufacturer documentation.

How the LMT100 works

The LMT100 detects the presence of a medium at the probe tip with a capacitive principle: when liquid, paste or powder reaches the probe, the capacitance of the sensing electrode changes, and the electronics compare it with a stored reference for the selected medium type. The medium type is preset at the factory and can be changed through IO-Link, which tunes the sensing to the product. Because the stainless steel body and PEEK probe have no moving parts, the sensor is not affected by wear, sticking or mechanical float problems.

Where the LMT100 fits and related parts

Among the LM point-level sensors, the LMT100 is the water-based version, while the LMT121 is preset for media with low water content and the LMC510 is preset for oils on a 1/2 inch NPT thread. All three share the capacitive principle and IO-Link, so the difference is mainly the factory medium setting and the process connection. For continuous level rather than a switch point, see the LK1022 and the LR2750.

Selection and ordering checklist for the LMT100

Work through the points below before you confirm the order, so that the LMT100 you receive is the one your machine or plant needs.

• Confirm the medium is water-based (the factory setting is hydrous media) and note foam or build-up behaviour
• Check tank pressure (-1 to 40 bar) and medium temperature (-40 to 100 degrees Celsius, short-time 150)
• Match the G 1/2 sealing cone connection with the weld-in or adapter piece
• Decide on the output mode: switching or IO-Link
• Check the M12 cordset needed

The manufacturer lists this article under the type designation Sensor for point level detection, LMACE-A12E/QSKG/0/US. The article number LMT100 is the reference to quote when ordering, and the type designation is useful for technicians who compare the label on an installed unit.

Installation, commissioning and maintenance

Install the sensor in a nozzle or tank wall so that the probe tip protrudes by the stated length into the product, keeping it away from internal structures and filling jets. Seal it with the correct cone or thread seal for the process connection and observe the allowed tank pressure and medium temperature. At commissioning, select the medium type, run the tank to the switching level and check the output, and then test with product that clings to the probe to see that the build-up is rejected. Inspect the probe from time to time for heavy deposits and keep the M12 connection tight and dry.

Make sure the probe tip protrudes into the product and is not shadowed by a nozzle neck, since a long neck can hold product and give false signals. Use the correct seal for the sealing cone and tighten the connection as specified. After CIP cleaning, verify that the sensor returns to the empty state when the product drains.

Typical applications in Oman and the GCC

Food and beverage applications rely on the hygienic finish, but in Oman and the GCC the LMT100 is just as often used in water treatment, desalination dosing tanks, cooling water make-up tanks, and chemical day tanks for high and low level protection. The IP69K housing tolerates washdown and heat.

Level sensors in tanks exposed to Gulf summers must tolerate hot product, condensation on cold nozzles and long periods without attention. Plan a periodic proof test of the alarm point, and record the output state at known levels during commissioning.

LMT100 compared with related ifm types

The table places the LMT100 next to neighbouring types in the same application group, so you can see whether a sibling would suit the job better.

Information to send with an RFQ for the LMT100

To prepare an accurate offer for the LMT100, please include the following with your enquiry:

• Medium (water-based, oil, powder or paste) and its temperature
• Tank pressure and cleaning method (CIP or washdown)
• Process connection type and thread
• Switching or IO-Link requirement
• Quantity and delivery location

Documents and quotation

No datasheet is attached to this page. Send us the part number LMT100 and we will confirm which documents are available, such as the datasheet and operating instructions, and for IO-Link devices the device description file.

Seven Star LLC is an independent supplier in Muscat serving Oman and the GCC and is not affiliated with the manufacturer; the name ifm is used only to identify the product. Prices are not shown on the page, so send the part number, the quantity and the delivery location to receive a quotation.