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  • Usually ships in 1-2 weeks



  • For compatible fluids only. Not for use with powder and bulk solids.
  • Ranges: 24.6' (7.5 m), 32.8' (10 m)
  • Accuracy: ±0.2% of maximum range
  • Resolution: 0.079" (2 mm)
  • Blind Zone: Under 8" (20 cm)
  • Beam Width: 3" (7.6 cm) diameter
  • Temperature compensated from -40 to 140°F
  • Pressure Limits: 30 psi (2 bar) up to 25°C (77°C)
  • Wetted Materials:
    • Sensor: PVDF
    • Process Connection: 303 SS
    • O-ring: fluoroelastomer
  • Power Requirement: 18 to 28 VDC (2 wire)
  • 4 to 20 mA or 20 to 4 mA (Two-wire) output
  • Screw terminal connections
  • 2" NPT male or BSPT process connection
  • Enclosure Rating: Weather-proof meets NEMA 4X, explosion-proof rated Class I, Div. 1, Groups B, C, D; Class II/III, Div. 1, Groups E, F, G
  • Non-volatile memory
  • LCD display
  • CE, FM approved


The Mercoid ULT Ultrasonic Level Transmitter provides reliable, accurate, non-contact measurement of liquid levels. Ultrasonic non-contact technology offers no moving parts to wear, jam, corrode, or get coated like contact technologies. Mapping software makes effective measuring surface only a 3" diameter column. No concerns with ladders, pipes, or other tank intrusions in the remaining sound cone. Unit is FM approved explosion-proof making it ideal for use in hazardous locations. The ULT features easy programming with 6 digit LCD display and simple menu structure. Output range is adjustable with choices of inputting tank dimensions or just fill and empty the tank while calibrating and it automatically scales to levels it senses. Window cover allows early viewing of display. Fail-safe output options and diagnostic capabilities makes the ULT a good choice for critical applications.


This product can be used in the following applications:

Here's how some of our customers use this product...

Influent Tank Level Monitoring

The Background: Our customer is a water treatment plant that wants a new level measuring option on an influent tank.

The Problem: The influent tank currently has a bottom mounted level transmitter that has been giving the operators some “issues”.

The Solution: We suggested the Mercoid ULT-11 ultrasonic level detector which will be mounted on top of the tank and used as a comparator to the existing bottom-mounted unit. Mercoid’s ruggedness, price point and fast delivery were a couple key selling points for this application.

Tank Level Monitoring at a Linen Supply Company

The Background: Our customer is a regional uniform rental and linen supply company that operates over 100 facilities. They want to accurately and safely measure levels in different tanks containing detergent, bleach, etc.

The Problem: The customer wants a transmitter that is not in contact with the medium. They also want the levels to be viewed by the operator down on the production floor.

The Solution: We suggested the Mercoid ULT-11 ultrasonic level transmitter paired with an Autonics KN-2000W panel meter. The panel meter runs on 110VAC supply and provides the 24VDC voltage required for the ULT-11 to operate, thus eliminating the need for an additional DC power supply. Instrumart also programmed the panel meter and the level transmitters according to the customer’s specification at no cost prior to shipping. This set-up is currently being used at several of the customer’s facilities around the country.