MULTIBRITE® 4-Channel UV Monitoring System is an electro-optic instrument designed to monitor several UV lamps (up to four) simultaneously and sound an alarm when any of the lamps falls below a user-settable threshold. Any lamp output can be switch selected and read, as a percentage of original output, on a front panel display. The system is comprised of two major components, a Signal Conditioner and the Signal Monitor Module, both contained in the same compact enclosure.
Features:
- Monitors output of 4 UV lamp sources simultaneously
- Provides timely relamping information
- Audible and visual alarms
- Digital readout
- Low output alarm
- Standard linear outputs for remote monitoring
- Cascadable remote alarm output
- Individual channel alarm lockout
- Programmable alarm delay
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Applications:
- Monitor UV lamp intensity
- Reliable lamp replacement indicator
- Indication of when to clean lamp reflectors
- Process control measurement
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Introduction
To get good curing results consistently, it is important to know when to replace the lamps. If the lamps are only replaced at set time intervals, they may be replaced too soon or too late. Money is wasted if the lamps are still good. Product is wasted if the lamps are overdue for replacement. The human eye, unable to detect UV light, must rely on an instrument designed to monitor only UV within a specified bandwidth. MULTIBRITE can help eliminate guess work, reduce waste, and assure consistent product quality to save time and money.
The MULTIBRITE 4-channel UV Monitoring System is an electro-optical instrument designed to track up to four UV lamps simultaneously. It will operate with any UV source such as mercury, electrodeless, xenon, deuterium or other lamp producing an output at 250-260nm, 280-320nm, 320-390nm, or 395-445nm. It displays the relative output of each lamp's intensity. The MULTIBRITE sounds an alarm if the output of a lamp falls below a percentage set by the user.
Installation
MULTIBRITE is easy to install. The enclosure can be wall, panel, or rack mounted, or simply set on a surface.
Each sensor is mounted on the UV system where it can receive a sufficient amount of UV light. Hardware is provided to simplify sensor mounting.
Operation
After installation, the user calibrates the MULTIBRITE. When the lamps are new and the irradiators are clean, the MULTIBRITE is set to read 100% on each channel used. The user then determines a Lower Limit percentage for the alarms and sets it. Front panel switches select which channel (or Lower Limit) is displayed.
Low-level signals from the individual sensors are converted to a voltage level for signal monitoring and display. A 4-20mA / 0-10 V output for each channel allows interfacing to a programmable logic controller, personal computer or other data collection device.
If a channel's output falls below the Lower Limit setting, a comparator circuit drives the alarm outputs. The internal audible/visual alarm is enabled or disabled by a switch on the front panel.
When a lamp needs to be replaced or has been removed, the channel can be put on standby. The MULTIBRITE will continue to monitor the other channels and ignore the standby channel.
An alarm delay function allows time for the lamp(s) to turn on before the monitor to prevent a false alarm. MULTIBRITEs can be cascaded so that more than four lamps can be monitored by several MULTIBRITE systems - each interconnected so that any lamp dropping below the Lower Limit will trigger a common alarm.
SPECIFICATIONS:
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MULTIBRITE®
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| ENCLOSURE |
| Display |
3 digit LCD, 0.5" high digits. Source selected by turning switch to different channels |
| Display Range |
0-199% |
| Operating Temperature Range |
0-50 degrees C |
| Input Current Range |
0.2-2.0 microampere for "100%" full scale reading. Adjustable via 20 turn "Calibrate" adjustment |
| Output Current Range |
4 to 20ma into a maximum impedance of 250 ohms |
| Output Voltage Range |
0 to 10 VDC into a minimum impedance of 10K ohm
0 to 5 VDC into a minimum impedance of 5K ohm |
| Alarm Outputs |
Dry contacts rated for 0.5A at 125 VAC driving a resistive load |
| Input Power Requirements |
90 to 132 VAC 47 to 440 Hz 0.20 amperes |
| Weight |
3 pounds |
| Dimensions |
Enclosure 7.0"W, 3.5"H, 5.9"D. Front panel: 9.4"W x 3.5"H |
| Construction |
Painted aluminum with integral mounting flanges |
| Mounting |
Panel mounted (1/2 rack dimensions) |
| COMPACT SENSOR |
| Dimensions |
0.57 x 1.09 x 0.92 (inches) 1.45 x 2.77 x 2.34 (cm) Sensor Housing |
| Spectal Range |
250-260nm; 280-320nm; 320-390nm; or 395-445nm |
| Material |
Aluminum Housing |
| Weight |
.8 ounces (22.68 grams) |
| Cable |
Teflon insulated, shielded, 10' (3 meters) long |
| Connector |
BNC for Multibrite |
| Temperature Range |
Sensor: 0-100° C
Sensor Cable: -55° C to 200 ° C |
