Membrane Keypad System: The Membrane option offers the user a highly dependable detector which is rugged in harsh environments.

Touchscreen System: Met 30+ detectors may be equipped with a large touchscreen display using state-of-the-art technology. The Touchscreen uses a bright sunlight-readable Electroluminescent (EL) screen. The operating software has been diligently designed to deliver a user-friendly series of menu screens and will display Lock’s unique ADC graphic technology which acts as a ‘window to the detection envelope’, providing operational and maintenance staff with a powerful on-screen diagnostic tool to optimize metal-detection performance.

Virtual Engineer & Modem Support: Provides detailed product ‘signal’ analysis to ensure optimal performance levels. The Met 30+ can also be linked through a modem to Lock service centre for immediate troubleshooting and support.

General Sensitivity: Sensitivity estimates in general are available for different aperture sizes.However actual value for given products can be specified after in-house product testing.

Fail-Safe Reject Options: Lock can deliver a complete range of reject mechanisms to suit all applications. Some of the options available are Airblast Reject, Pusher Reject, Diverter Arm Reject, Lift Flap Reject, Driven Drop Flap Reject, Retracting Band Reject and so on, to name a few.

Status Indicator Lights: These lights indicate the status of the detector, i.e. if the detector is working normally, or metal contamination has been detected, or if Sample Test is due, or the detector has malfunctioned and has gone into permanent reject mode.

Test Prompt Warning Facility: The Met 30+ prompts the operators to perform validation tests at regular intervals (as required by the Quality Control Personnel.) If such tests are not performed within the stipulated time, the machine goes into the Fail-Safe mode indicating that the required tests have not been performed.

Throughput Speeds: A Conveyor Belt speed of 5 m/min. upwards is available as standard for a Met 30+. Lower speeds can be accommodated depending upon the application. In the case of Pharmaceutical Metal Detectors for tablets, a throughput of as high as 30,000 tablets per minute can be achieved.

Easy Clean Design: The Met 30+ can be easily cleaned without much downtime.

hf Option:
High Frequency detection is another feature developed by Lock for its established Met 30+ Metal Detector.

hf detector employs a single high frequency, crystal controlled oscillator at 875 Khz. This is four times more than standard detectors within the industry. Designed primarily for snack food and bakery industries, the unit will inspect dry foods such as biscuits or crisps. The Met 30+ hf eliminates the need to reconfigure the settings for each product, reducing downtime whilst increasing efficiency and operating speeds.

3f Option:
Triple Frequency detection is the other feature developed by Lock for its established Met 30+ Metal Detector.

The Met 30+ 3f detector operates at three crystal tuned frequencies - Low, Medium and High. The detector's automatic Frequency selection facility will choose the optimum frequency for the application in hand. For example, when inspecting dry biscuits, the detector will automatically select high frequency, whereas for a product wrapped in metalised film, it will operate at low frequency.

Sizes: A full range of various aperture sizes is available depending on application and product.

Pharmaceutical Metal Detectors  

Lock has 2 models for the pharmaceutical application:

To detect contamination in tablets	To detect contamination in pharmaceutical powders.

Sealed Reject Valve : Lock has produced a completely sealed detection and reject system for fine Pharmaceutical Powders. Until now there has not been a completely sealed unit available for a dust free production environment. Lock's perfectly sealed valve is a fast acting device and is made from SS. It has a quick release mechanism and can withstand high temperature, washing and sterilization.

The Waferthin Metal Detector, as the name suggests, is extremely thin. It is only 115 mm (4.5") in depth. It is ideal for limited space installation. It is specifically designed to be installed between the scales and vertical form, fill and seal bagmakers. The advance microprocessor design of the Met 30+ electronics enables it to communicate with other control systems for integrated packaging efficiency and total quality assurance.

It is used widely in the Snack Food industry, where the product is filled in packets, pouches or sachets using a Vertical Form Fill Seal machine.

Various mounting arrangements are available like pivot mount or fix mount on a support framework using bolts.

Freefall Metal Detector

Freefall systems can be installed at the beginning of a production line to inspect materials in bulk powder or granule form, or anywhere in the process where the product is falling freely under gravity e.g. beneath feed hoppers and in pipelines.

High throughput rates coupled with high sensitivity makes Freefall unit ideal for the detection and rejection of metallic contamination in the processing of products like cereals, cocoa, coffee, sugars, dried fruit and vegetables, flour, milk powder products, rice sago, tapioca, chemical granules and powders and plastic pellets, to name a few.