Product category:
Vision and Colour Sensors
News Release from: Banner Engineering | Subject: QL50 and QL55
Edited by the Engineeringtalk Editorial
Team on 30 June 2003
Luminescence sensors aren't fooled by
colour
The QL50 and QL55 self-contained luminescence sensors use a modulated ultraviolet LED to scan for luminescence in materials, and are not affected by colour or contrast shifts.
The QL50 and QL55 self-contained microprocessor-controlled luminescence sensors use a modulated ultraviolet LED to scan for luminescence in materials, and are not affected by colour or contrast shifts that can challenge traditional optical sensors The QL Series sensors detect luminescence that is inherent in a material or it can sense luminophores that have been added to a material in process to make it luminescent
This article was originally published on Engineeringtalk on 29 May 2003 at 8.00am (UK)
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"Luminescence sensors are ideal for applications requiring the detection of colour marks, clear adhesive labels, tamper-evident seals, oil or grease and fluorescent product markings where the background colour may vary causing a contrast change that would confuse or fool other sensing methods", said Joe Dolinsky, Technical Manager for Banner's photoelectric products.
"Our new QL50 and QL55 offer an effective sensing solution for these applications that prove too challenging for conventional photoelectric sensors.
Their powerful microprocessor design provides accurate sensing at the high speeds found in automated production and they can differentiate luminescent marks on reflective surfaces such as ceramics, metal and mirrored glass", Dolinsky added.
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Both models feature simple pushbutton programming.
The QL50 may be programmed two ways: a quick-set mode where the sensor is taught to detect the specific luminescence intensity of a target and ignore the less-intense background, and a fine-detect mode that increases the unit's sensing precision to detect the specific luminescence intensity of a target and ignore all other surfaces with more or less luminescence.
The QL55 features a robust metal housing, enhanced sensitivity and two-step teach programming where the sensor is taught both the luminescent target and background conditions and automatically selects light operate or dark operate.
Both models feature a fast 250us response time and two bright LEDs to indicate operating and output status.
The QL50 has an active sensing range of 0 to 40mm with maximum signal at 10mm.
The QL55 features sensing ranges from 9 to 75mm, depending on model.
A compact housing size and three-position rotating quick-disconnect cable add to the mounting flexibility of these sensors.
The QL50 offers NPN or PNP discrete outputs by model.
The QL55 features switch-selectable NPN and PNP discrete outputs plus a 0 to 5.5V DC analogue output and an output off-delay option that extends the duration of the sensor's output by 20ms.
The QL50 begins at a breakthrough price of $389.00, and the QL55 begins at $895.00.
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