Model MSE-FMD94 Low Temperature Remote Fiber Digital Hot Metal Detectors (HMD)

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.

Background Temperature: High background temperatures decrease the sensitivity of the Hot Metal Detector. This should be not a problem for MSE-FMD94 because it has a Processor controlled function to eliminate this effect. The threshold of the sensor is constantly adjusted during operation according to the background temperature. Thus the best value of threshold is adjusted automatically.

Response Time: The response time of the MSE-FMD94 is programmable from 1ms to 250ms to accommodate black spots on the bar.

Self-Check Facility: The MSE-FMD94 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-FMD94 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-FMD94 is a direct replacement for the MCSL Model MD9100-HG and Model MD95100-HG Hot Metal Detectors. Please contact us for additional information.

MSE-FMD94 Signal Processor Controller Specifications

Optional Output: Reed Relay Output, SPNO, 240VAC, 0.5A with 2 ms response time.

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

A complete MSE-HMD94 Fiber Hot Metal Detector System is shipped as standard with a 1° FOV Spot Lens Part Number MSE-OH.01.1 or with a 7° FOV Spot Lens Part Number a MSE-OH.01.7 or with a 0.5° x 25° FOV Precision Slit Rectangular Part Number Lens MSE-OH.03.25-D-FMD95 plus with a 3 meter length of the appropriate Fiber Optic Lead  and 3 meter length of control cable with mating connector. See our data sheet on Fiber Optic Leads in the Downloads web page for information and available optional lengths.

Other lenses, 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.

This MSE-OH.03.05-Y-FMD95, MSE-OH.03.15-Y-FMD95,  and the MSE-OH.03.25-Y-FMD95 Precision Slit Rectangular Part Number Lens can be supplied with water/vortex air cooling with separate air purge housing (Change Y = D) or with a unique air cooled and or an purged housing (Change Y = A).  interchangeability of lenses allows the user to adopt one standard sensor to suit individual installation requirements.

The MSE-FMD94 is a direct replacement for the MCSL Model MD9100-HG and Model MD95100-HG Hot Metal Detectors. Please contact us for additional information.

Spot Lenses

Precision Slit Rectangular Lenses

MSE-FMD94-XX Signal Processor Controller Unit Part Number Specifications