German specialists in microwave moisture measurement systems for the concrete and building materials industry, represented across the UK and Ireland by SRS Machinery Services.
Based in Mainz, Germany, Franz Ludwig GmbH has over 40 years of experience in moisture measurement technology for concrete, precast and bulk material applications. Moisture variation in aggregates directly affects the water-cement ratio, which governs concrete strength, workability and durability. Without accurate measurement, water addition becomes an estimate. Ludwig systems provide continuous, real-time data to maintain mix consistency and protect product quality. SRS Machinery Services supports specification, installation and aftersales across the UK and Ireland.
Sensors
Microwave moisture sensors for continuous, real-time measurement in aggregates, powders and bulk materials, immune to temperature variation and independent of mechanical contact.
The FL-WAPP sensor range operates at 433MHz, measuring moisture without contact with the material flow. Sensors install in aggregate bins, conveyors and mixers, with variants for high-temperature environments, ATEX-rated zones and specialised applications. Replaceable wear protection heads extend service life in abrasive conditions. Outputs integrate directly with plant control systems for automated water dosing correction. SRS Machinery Services supports specification and installation across the UK and Ireland.
Measuring Systems and Devices
Control and monitoring systems that convert live moisture data into automatic water dosing correction and batch-by-batch quality verification.
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The FL-Mikro T2 dosing computer receives live sensor data and adjusts water addition in real time to maintain the target water-cement ratio for every batch, removing operator dependency from the most critical mix variable. The FL-Batch Check monitors concrete consistency and temperature before discharge, providing continuous batch verification. Together these systems create a closed-loop process that improves mix consistency, reduces rejects and limits cement overuse. SRS Machinery Services supports specification and integration across the UK and Ireland.
Wireless Systems
Mobile and wireless moisture measurement systems for quality control at points in the production and delivery process where fixed installation is not practical.
Ludwig's wireless range includes handheld devices for rapid aggregate moisture and temperature measurement, in-drum monitoring systems for concrete consistency during transit in truck mixers, and compact sensors for restricted installation spaces. These systems extend quality control beyond the plant gate, enabling verification at aggregate delivery, during mixing and in transit. Wireless communication supports integration with plant data systems and logging platforms. SRS Machinery Services supports specification and deployment across the UK and Ireland.
Budenheimer Straße 1
D-55124 Mainz-Gonsenheim
Germany