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Moisture measurement in bulk solids including RMC

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Time Domain Refractometry (TDR) is a method used to measure the dielectric constant (water content) of a material.

Time Domain Refractometry (TDR) is a method used to measure the dielectric constant (water content) of a material. Metal conductors or rods are used as wave guides for the transmission of the TDR-signal. The device generates a high-frequency-pulse (up to 1GHz) which propagates along the wave guides at the speed near to light, generating an electromagnetic field around the probe. At the end of the wave guides, the pulse is reflected to its source. The resulting transit time from picoseconds to nanoseconds and dielectric constant provide an accurate measurement of moisture content. The moisture content is calculated inside the device and is available at standard analogue outputs.

IMKO, a German company, which part of the Endress+Hauser Group has developed a patented measuring method called TRIME® TDR method. With this technology it is possible to measure the transit time with a resolution of 3 picoseconds. The TRIME® TDR method has been successfully used more than 30 years in the process industry.

The TRIME® TDR -technique has an ideal measuring frequency between 600MHz and 1.2GHz and the measuring field penetrates deep into the material. The electromagnetic pulses generated in the TRIME device are high enough and constant for good resolution and accuracy of measurement. In addition, disturbing influences such as electrical conductivity have nearly no effect. Precise moisture can be measured in temperatures up to 120°C. TRIME® TDR technology is used in Solitrend product which helps to increase product quality and reduce energy efforts due to precise moisture measurement.

The senor used in Solitrend is in direct contact with the material. Calibration is a simple linear equation. Measurement field adapts itself to the shape of material and is quite large. It is also undisturbed by dripping water, air and dirt. The probes are extremely rugged for exceptionally long operational life. It also replaces time consuming lab analysis and manual sampling with continuous online measurement.

Both In line as well as portable probes measurements are available.

Application

  • The building industry. Moisture measurement in Ready Mix Concrete.
  • In line moisture content measurement in bulk material or goods like wood chips, pellets, animal food etc.
  • The glass and ceramics industry like silica sand, moulding sand, ceramics mass.
  • Food Industry. Malting plants, Corn, Sludge drying, Fluid bed dryers (inlet/outlet).

Limitations of other methods

Capacitance method – This method works with single measuring frequencies between 5-80MHz. The dielectric constant is influenced both by moisture and salinity. It is very difficult to distinguish between the two influences and precise moisture measurements are difficult to achieve.

Microwave method – The frequencies of microwave techniques are generally higher than 2GHz. This technique leads to loss in resolution and accuracy of measurement having negative influence on the readings.

Conductance or Resistance method – This method have very low measuring frequencies of about 4kHz. There is a strong influence of different salinity of the bulk material on the measurement. The difference in salinity is caused by different mineral contents temperature. Another problem of resistance method is the low penetration depth of the measuring field.

Near-Infrared method (NIR)-This method shows a very lower penetration depth and, therefore, considerable influences of material surface and thickness.

Scan the QR code for more information or write to us on info.in.sc@endress.com.

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Concrete

Meghalaya Cabinet Approves MCCL Closure, Writes Off Rs. 244.3 mn

Cabinet approves winding up of state-owned cement company

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The Meghalaya Cabinet has approved the closure and winding up of Meghalaya Cherra Cement (MCCL), a state-owned cement company, with pending liabilities of approximately Rs. 244.3 mn to be written off as part of the process. The decision was announced by Chief Minister Conrad K Sangma on October 13, 2026.

The approved write-off comprises about Rs. 89 mn in sales tax dues and Rs. 155.3 mn in royalty dues. The Cabinet’s decision addresses the liabilities that remained after the company’s operations and enables the government to proceed with its formal closure.

Sangma said employee dues owed by MCCL had been settled in line with the state government’s commitment. The settlement of employee-related liabilities is a key part of the winding-up process and removes outstanding obligations to the company’s workforce.

The Chief Minister explained that MCCL is owned by the government, meaning the pending liabilities would otherwise involve transfers between the state government and its departments. Writing off the dues is intended to simplify the accounting and administrative steps required to complete the closure.

The decision is also intended to ensure that the winding-up does not create an additional financial burden for the state government. With employee payments settled and the sales tax and royalty liabilities addressed through the approved write-off, the Cabinet’s approval marks a further step towards completing the formal closure of MCCL.

The action follows the state government’s decision to discontinue the company and resolve its outstanding obligations through an orderly winding-up process. The approved measures cover the principal liabilities identified for settlement and allow the government to advance the remaining formal procedures associated with closing the state-owned enterprise.

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Concrete

Fornnax Wins AIRIA’s Special Export Award for Rubber Machinery in 2025-26

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Fornnax Technology Pvt. Ltd. has been honoured with the Special Export Award – Rubber Machinery for 2025–26 by the All-India Rubber Industries Association (AIRIA), in recognition of its highest exports of tyre recycling plants to the European region.

With more than a decade of experience in India’s tyre recycling industry, Fornnax has contributed to the development of advanced recycling technologies and infrastructure. The company currently holds a 90% market share in India’s domestic tyre recycling sector, while exports account for 30% of its business, spanning markets such as Europe, Australia and the GCC.

The award marks another milestone for Fornnax, whose tyre recycling lines and advanced shredding technologies are supporting the growth of the circular economy in India and international markets.

Commenting on the recognition, Mr. Jignesh Kundaria, Founder and Director of Fornnax, said:

“This honour from AIRIA is a reflection of an incredible journey we have undertaken over the years. When we started Fornnax, there was no established recycling industry in India to follow. We chose to build for the future instead. Today, when you see India’s tyre recycling sector, it has already transformed into a dynamic, high-growth industry and we are extremely proud to have played our part in building it.”

Unlike standalone equipment suppliers, Fornnax focuses on developing complete, high-capacity recycling infrastructure. Its integrated systems combine multiple stages of shredding and size reduction to enable efficient, continuous operations. This system-level engineering approach helps recycling operators improve throughput, equipment reliability and operational consistency.

The recognition reinforces Fornnax’s commitment to developing engineering technologies that contribute to a more efficient and circular recycling ecosystem.

Looking ahead, the company aims to expand its international presence while continuing to develop advanced shredding and recycling solutions to address the growing volumes and evolving requirements of the global recycling industry.

For more information, visit: www.fornnax.com

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Concrete

Cement Prices Likely to Rise Rs. 10-15 per Bag from Mid-October

Input costs and steady demand may drive cement price increases

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Cement manufacturers in India are likely to raise prices by Rs. 10-15 per bag from mid-October, as they seek to offset persistent increases in power and fuel costs. Emkay Research said its channel checks indicated a high probability of an increase from October 12, supported by the start of the busy construction season and favourable demand-supply conditions.

The sector had implemented similar rate adjustments of Rs. 10-15 per bag during the first quarter, but the increases were insufficient to cover higher operating costs. Prices also softened during July and August because of the monsoon, widening the gap between realisations and input expenses. Delayed plant expansion programmes have pushed clinker utilisation rates towards 79 per cent by FY28, helping to balance market fundamentals.

Emkay Research said steady volume offtake was supporting cement consumption, with non-trade demand driving activity across regional markets. Industry volumes are expected to grow by 7-8 per cent year on year during the first half of FY27, while demand momentum is projected to remain firm over the following 18 months. The outlook includes the busy construction season in the second half of FY27 and infrastructure activity linked to general elections in the first half of calendar year 2029.

The brokerage expects overall cement demand to record a compound annual growth rate of about 7 per cent between FY26 and FY28. However, elevated operating expenses are likely to continue weighing on profitability. Input costs have risen by Rs. 300-400 per t over the past six to seven months, with the full impact expected to become visible in second-quarter earnings and remain persistent through the second half of FY27.

Spot prices for petcoke and imported coal are approximately 20 per cent and 16 per cent above their second-quarter averages, at USD 175 per t and USD 150 per t, respectively. Packing costs have also increased, with polypropylene granule prices rising above Rs. 135 per kg. Emkay Research estimated that second-quarter earnings could decline by Rs. 200-250 per t sequentially because of higher fuel bills and negative operating leverage, and said the sector requires sustained price increases of about Rs. 10 per bag to offset cost inflation.

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