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MC-Pro
2500-T
Inline
Moisture Reader
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In-line Non-Contact Moisture
Meter Northern Milltech’s
revolutionary new inline moisture system uses digital pulse rather
than conventional analog tank technology to determine moisture content.
Board temperature is read using a reliable, accurate temperature sensor,
and moisture contents are adjusted accordingly. Vertical board movement
is measured using an infrared displacement sensor so board movement in
the field is no longer an issue.
NMI’s proprietary method of background suppression eliminates the need
for any calibration. Setup is based on a predetermined formula derived
by NMI through extensive oven dry testing. Coupled with their remote
reporting and kiln tracking systems, the MC-Pro 2500-T is proving
to be the latest move towards total moisture content management
and control. Ask about their risk-free money-back guarantee.
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In-line Non-Contact Moisture
Meter The MC-Pro 2500 non-contact moisture meter system differs from conventional meters in several ways, not the least of which is our method of taking readings. While other systems use a form of analog tank capacitive sensing, the MC-Pro 2500-T triggers a stream of high speed digital pulses through the wood. This method allows us to take faster readings thereby detecting sudden changes in moisture content at high speeds. The NMI system displays all readings along the length of the piece rather than just the peak and the average. Each system comes with a built in display right on the unit which shows the moisture content along with the status of all the system components. This is the only meter on the market that detects the temperature of each board as it passes through the system and automatically adjusts the moisture reading. The MC-Pro has a built in sensor which accurately measures board temperature from -30 to +40 deg C. While other systems will read too dry on colder pieces, this unit maintains accuracy in any condition. We employ a very fast laser displacement sensor to accurately measure the position of the piece as it travels over the sensing field. The control computer then calculates the moisture content based on a combination of board position, board temperature and the sensor reading. The fact that lumber can move vertically as much as a full inch as it exits the planer makes this is a very important feature. This correction for change in the air gap between the sensor and the lumber is exclusively used by the NMI system. Our competitor’s products assume that the boards maintain a consistent height and therefore lose accuracy whenever the piece moves. The NMI MC-PRO 2500 does not require the use of external sensors to detect changes in ambient conditions. Our proprietary method of taking background suppressions eliminates any possibility of sensor drift. This procedure occurs automatically whenever the system is clear of lumber. Background suppression also eliminates the need for any calibration on the system so that once installation is complete, and the mathematical formulas entered for each stock, there is no ongoing setup required. The NMI stock formulas are based on extensive oven-dry test results. Like other systems, we use a very fast through beam photocell to detect the gap between pieces. However, a feature exclusive to NMI is that we keep track of how many readings are taken on each piece and, in the event that there is no gap between pieces, which is bound to happen occasionally, we will automatically create a gap and mark the board if it is wet. Systems without this feature will wait until the end of the second board to make their moisture content decision based on the average of both boards thereby potentially missing a wet board or marking the wrong piece. We provide up to three outputs for painters, one marker for pieces that are too dry, and two levels of wet markers. The wet outputs can either be hooked up to separate painters or timed such that they use the same painter but mark different locations on the board. We also have outputs for alarms such as dirty or blocked photocells and seperate ouput for system alarms such as excessive low readings, and distance sensor errors. The 2500 incorporates a built in, timed, air blaster to clear the system of debris. The wet marking set-points can be based on the average moisture content, the peak moisture content, or a combination of both. Using only one gun, the painter can be set to mark once if the board averages over one set-point and mark twice if the peak moisture exceeds a second set-point. This feature can be user programmed on a stock by stock basis, with some stocks using the average mc while others use the peak. The system ties in nicely with automatic grading machines. We can not only pass off the peak and averages of the piece, but each individual reading along the length. This feature allows the grading machine to factor in localized wet spots when determining it's grade decision. The 2500-T incorporates an embedded processor and does not require the use of a dedicated PC. Through the use of our remote windows based monitoring program, the user can monitor the program, access historical data, generate user defined reports. These reports look at moisture content over time, as well as a single load report which graphically displays the end cross section of a load of lumber with the moisture content of each piece displayed on the load. The program generates a report every time you change to a new stock or change shifts. You can set up automatic shift reporting to take reports at the end of each shift. Compliments the 2500-T is the kiln tracking system. By numbering the loads coming from the kilns, then entering that package number into a terminal at the planer in-feed, each charge of lumber can graphically reconstructed. To ensure that every installation is a success, NMI provides a qualified technician to oversee the installation and provide the users with any training required on the system.
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