About: Since 1993, we have been manufacturing Universal-body Grain Moisture Meters, renowned for their heavy-duty performance. Weighing approximately 24 kg, these models are highly durable. This model also has a real time data logging facility. These are commonly referred to as paddy moisture meters, rice moisture meters, coffee moisture tester, maize moisture meters and seed moisture meters, they offer trusted performance and reliability.
Application: This model is calibrated for Cereals, Pulses, Millets, Oil seeds, Vegetable seeds, coffee seeds. Highly popular across the milling industry, our moisture content testers are widely used in Dall mills, Rice mills, Flour mills, Grain warehouses, Seed companies, and government procurement agencies.
Construction: These heavy-duty models are constructed from alloy steel for enhanced strength and stability, with key components such as the test cup, top plunger, bottom plunger, ratchet handle, and crank handle’s body made from stainless steel. The design incorporates a spur gear attached to the bevel pinion, providing mechanical advantage for smoother operation. In this setup, the top plunger remains fixed while the test cup moves upward to compress the grain sample. The thickness is measured using a linear vertical scale (main division) and a side-mounted dial (subdivision) for precise readings. The mechanical components, including the buttress thread lead screw, bevel gears, main body, and plungers, are CNC machined to high precision, ensuring full interchangeability.
Working Principle: Universal Body digital moisture meters for grains operate on the principle that the electrical resistance of grains changes with moisture content. A table is programmed into the microcontroller to map the relationship between moisture content and resistivity constant. Additionally, they are programmed to compensate for temperature variations, ensuring precise moisture measurement for grains.
Operation: These moisture meters feature a membrane keypad for selecting commodities and navigating menu options. To operate, a fixed volume of grain (about 30 cc) is measured using the provided volume cup and transferred to the stainless steel test cup. High pressure is then applied to compress the grain to a predetermined thickness, after which the read switch is pressed to display the moisture content on the LCD screen of the digital moisture tester.
Standards: The accuracy, repeatability, and reproducibility of this machine meet BIS (IS-8824 Part 1: 2022) and international standards. Indosaw now has an in-house NABL-approved (ISO 17025: 2017) moisture testing lab for IS-4333 (Part 2: 2017) to verify the results of our grain moisture meters
