DSL-40T

DSL-40T  Overview

The DSL-40T is an aircraft icing detection sensor designed as a sensitive element of the SO-121VM icing detection system. The sensor detects ice formation on the aircraft surface during flight and ground operation and transmits signals for further processing. It is installed externally on the fuselage and operates under direct airflow conditions.

DSL-40T Detection Function

The sensor operates based on changes in resonant vibration of a membrane element. When ice accretes on the membrane, its vibration characteristics change, generating a signal that is transmitted to the electronic converter. This enables timely detection of icing conditions and activation of onboard anti-icing systems.

DSL-40T Aircraft Application

The DSL-40T is used on aircraft and helicopters equipped with SO-121VM systems. It functions as a primary sensing element in icing detection, warning, and anti-icing control systems, supporting safe operation under icing conditions.

DSL-40T Design and Installation

The sensor has a cylindrical design with a membrane-based sensitive element and an integrated electromagnetic vibrator. It includes a heating element to ensure proper operation. The product is also known under alternative designations DSL-40T, ДСЛ-40Т, which refer to the same product type.

Product Type: Aircraft icing detection sensor
Function: Detection of ice accretion and signal generation
Application / Where Used: SO-121VM icing detection systems
System / Installation Area: External fuselage mounting (cockpit area)
Working Principle: Resonant vibration of membrane sensor
Resonant Frequency: 5950 Hz (+35 / −70)
Excitation Current: 20 mA AC
Output Voltage at Resonance: Not less than 150 mV
Output Voltage (Non-Resonant): Not more than ±50 mV
Membrane Heating: Integrated heating element
Mechanical Clearance: 0.2 +0.1 / −0.15 mm
Weight: Not more than 0.55 kg
Technical Documentation: DSL-40T Technical Documentation

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.