The self-contained MSE-HMD84 Low Temperature Digital Hot Metal Detector is available with either air coolant chamber venting as air purge or alternatively with a water coolant chamber and separate air purge. Shown mounted on a supplied MSE-LH-01 "L" Mounting Bracket.

MSE-HMD84 Low Temperature Digital Hot Metal Detector (HMD) Sensor

The following is additional technical and operation information on the MSE-HMD84 Low Temperature Digital Hot Metal Detector

Threshold Settings: To accommodate variation in bar temperature and background IR, various precise threshold are programmable via covered switches from 160°C to 460°C IR Threshold Trip Level for Steel and 200°C to 500°C  IR Threshold Trip Trip Level for Aluminum to ensure reliable switching with reference to both the displayed background and product IR signal. The trip level is set as fine adjustment and coarse adjustments. 9 levels of fine adjustments which correspond to unit trip points.10 levels of coarse adjustments which correspond to times ten trip points. The trip level span has a 0-109 scale allowing adjustment of the threshold trip level from 200-500 degrees, this means, every trip unit level has a value of: (500-200) /109 = 2.75°C or (500-200) /109 = 5°F.

Response Time: The response time of the MSE-HMD84 is programmable from 1ms to 250ms to accommodate black spots on the bar.

Self-Check Facility: The MSE-HMD84 incorporates a remote self-check facility remotely energized by closed contacts that illuminates an internal IR LED to switch the detector and verify the' outputs are operating correctly. This facility allows the user to check the integrity of the optic head, lead, processor, electrical circuit and the signal connection in one operation.

Supply Voltage: The MSE-HMD84 will operate from either 24VDC or from an optional 80-240 VAC power input. Power consumption is 2 watts.

Hot Metal Detected Outputs: Standard outputs include a cradle relay with SPNO, 240VAC, 7A Contact and a 20 ms response time, and both NPN/PNP transistor outputs rated 500 mA, 45VDC, 2A peak. An optional fast reed relay with SPNO, 240VAC, 0.5A Contacts and a 2 ms response time.

The MSE-HMD84 is a direct replacement for the MCSL Model MD2100-HG, the Model MD8400, the Model MD84100, and the Model MD95100-HG Hot Metal Detectors. Please contact us for additional information.

Specifications

Smallest Detectable Product when utilizing a 0.5° x 25° Lens

Approximate Guideline for Temperature of Hot Product above Preset Threshold vs % of Vertical Field of View

The table below identifies the minimum % of vertical field of view required with hot steel at stated temperature for it to be repetitively detected.

Lens Options

MSE-HMD84 is shipped as standard with 0.5° x 25° FOV Slit Rectangular Lens. Optional rectangular and spot lenses are available, as listed in the table below, may be chosen to accommodate the monitoring of both large and small product at close proximity or substantial distance. Even product dramatically deviating about the center of Field of View can be monitored with a slit Field of View lens arrangement.

This interchangeability of lenses allows the user to adopt one standard sensor to suit individual installation requirements. Please contact us for other FOV lens requirements.

The MSE-HMD84 is a direct replacement for the MCSL Model MD8100-HG, MD8400, MD84100, and Model MD85100-HG Hot Metal Detectors. Please contact us for additional information.

Spot Lenses

Rectangular Lenses