Related Manuals for Net Safety UVU-140A
Summary of Contents for Net Safety UVU-140A
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Page 1: User Manual
UVU-140A AND UVU-140-AR UNITIZED ULTRAVIOLET FIRE DETECTOR USER MANUAL Part Number: MAN-0002-00 Rev. 1... - Page 2 Net Safety Monitoring Inc. does not guarantee the results and assumes no obligation or liability. No part of this manual may be copied, disseminated or distributed without the express written consent of Net Safety Monitoring Inc.
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Page 3: Table Of Contents
TABLE of CONTENTS CHAPTER 1 TECHNICAL INFORMATION ........1 Introduction . - Page 4 Appendix A Net Safety Monitoring Inc. Electrostatic Sensitive Device Handling Procedure ............. . . 17 Appendix B Common Ultra-Violet Absorbing Gases .
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Page 5: Chapter 1 Technical Information
CHAPTER 1 TECHNICAL INFORMATION Introduction The UVU-140-A & UVU-140-AR fire detectors provide fast, reliable flame detection in a wide variety of applications. The automatic visual integrity (vi) feature allows for a continuous check of optical surfaces, sensitivity and electronic circuitry of the unitized fire detector. Fire and fault identification are accomplished by the use of specific current output levels and relay contacts (UVU-140-AR only). -
Page 6: Specifications
Specifications Operating Voltage Range: 24Vdc nominal: 10.5 to 32Vdc If a fuse is rated in line with the main power supply, it should be a 1A slow-blow type. If a power supply with current limiting is used it should have a rating appropriate for the inrush current required by the product. -
Page 7: Applications
1A @ 30Vdc 0.5A @ 125Vac Response Time: Response to a saturating (high intensity) UV source is typically 10 milliseconds Alarm response time is programmable Time Delay Settings: DIP switch selectable 3, 4, 5 or 7 seconds Sensitivity Settings: DIP switch selectable 8, 16, 24 or 32 counts per second Humidity Range: 0 to 100% relative humidity Applications... -
Page 8: Chapter 2 Installation
Figure 2 - Detector cone of vision CHAPTER 2 INSTALLATION What’s in the package Remove all the components from the packing box(s) carefully; check components against the packing list. Inspect all components for obvious damage and broken/loose parts. Notify the carrier and distributor immediately if damage is found or parts are missing. -
Page 9: False Alarms
between the detector and the sources of potential fires. Small concentrations of these types of gases may not absorb enough UV radiation to cause a problem, but when higher concentrations of these gases are present the detectors may become blind as not enough ultra-violet radiation can reach them to activate an alarm. Moving detectors closer to the probable source of fire and increasing the sensitivity of the detector can help to overcome this problem in some cases. -
Page 10: Figure 3 - Detector With Swivel Mount
metre) below the ceiling where they may respond before being obscured by smoke. Consider shortening time delay settings when smoke is expected to accumulate during a fire. If dense smoke is likely to accumulate prior to flame (as in an electrical fire), supplement UV detectors with other protection. -
Page 11: Figure 4 - Detector Dimensions
Figure 5 - Swivel Mount Dimensions Figure 4 - D etector D im ensions Figure 6 - JB 4-U V -T Junction B ox Side Figure 7 - JB 4-U V -T Junction B ox V iew Top V iew... -
Page 12: General Wiring Requirements
General Wiring Requirements NOTE: The wiring procedures in this manual are intended to ensure proper functioning of the device under normal conditions. However, due to the many variations in wiring codes and regulations, total compliance to these ordinances cannot be guaranteed. Be certain that all wiring complies with applicable regulations that relate to the installation of electrical equipment in a hazardous area. -
Page 13: Wiring Diagram For Uvu-140-A
Wiring Diagram for UVU-140-A Figure 8 - W iring for UV U -140-A... -
Page 14: Wiring Diagram For Uvu-140-Ar
Wiring Diagram for UVU-140-AR NOTE: common” ) - 24Vdc “system not used connect it to (- If the 4-20 mA signal is Figure 9 - W iring for U VU -140-A R... -
Page 15: Detector Settings
Detector Settings System Sensitivity The UV tube count rate generated by different fires at the same distance is unpredictable. Generally if a fire doubles in size, the tube response is increased by about 60 percent. The UVU-140-A & UVU-140-AR detectors have selectable sensitivity settings which allow for various applications regardless of the severity of the hazard and the action required if a fire occurs. -
Page 16: Table 3 - Coil And Relay Status
Table 3 - Coil and Relay Status COIL AND RELAY SETTINGS TABLE Switch 1 Switch 2 De-energized and non-latching Energized and non- latching De-energized and latching Energized and latching CHAPTER 3 START UP AND TEST Start up Procedure NOTE: Be sure that the detector is correctly aimed at the potential hazard and that no obstructions interfere with its line of vision. -
Page 17: Test Procedures
Manual vi Test Procedure The detector has a manual vi input. The manual vi test is performed by connecting this input to the system power for the duration of the test. This can be done by connecting a momentary contact pushbutton between system power and the manual vi input, and then holding the pushbutton to perform the test. -
Page 18: Chapter 4 Normal Operation
The UVU-140-A or UVU-140-AR current output will change with the amount of ultraviolet light being detected (see Table 4). Turn off the UV test lamp. Repeat steps 1 & 2 for all detectors in the system. After all detectors have been checked, return the system to the normal operating mode. Restore power to output loads or remove any mechanical blocking devices. -
Page 19: Chapter 5 Maintenance
CHAPTER 5 MAINTENANCE Routine Maintenance The UVU-140-A & UVU-140-AR fire detectors require no periodic calibration. To maintain maximum sensitivity, the viewing window and reflector should be cleaned on a routine basis depending on the type and amount of contaminants in the area. The rubber o-ring on the detector housing is used to ensure the detector is watertight. -
Page 20: Device Repair And Return
Net Safety Monitoring Inc. encourages its distributors to make advance replacement units available to the user during the warranty period. This allows Net Safety Monitoring Inc. to take time to repair the unit completely while users keep their operations running with the advance replacement unit. - Page 21 Net Safety Monitoring Inc. modules that might be damaged by static electricity are carefully wrapped in a static protective material before being packaged. Foam packaging blocks are also treated with an anti-static agent.
- Page 22 Appendix B Common Ultra-Violet Absorbing Gases Since the UVU -140-A & UVU-140-AR fire detectors are designed to detect fires by responding to the ultra-violet (UV) radiation they emit, it is very important to be aware of UV absorbing gases that may be present between the detector and the sources of potential fires.
- Page 23 Appendix C Wire Resistance In Ohms Distance AW G #20 AW G #18 AW G #16 AW G #14 AW G #12 AW G #10 AW G #8 (Feet) 1.02 0.64 0.40 0.25 0.16 0.10 0.06 2.03 1.28 0.08 0.51 0.32 0.20 0.13...
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