Đầu báo cháy thường - Công ty TNHH Mela //x-zel.com Nhà phân phối thiết b?PCCC Thu, 04 Jun 2020 05:18:33 +0000 vi hourly 1 //wordpress.org/?v=6.2.3 //x-zel.com/wp-content/uploads/2021/11/New-Melaco-fire-protection-logo-81x81.png Đầu báo cháy thường - Công ty TNHH Mela //x-zel.com 32 32 Đầu báo cháy thường - Công ty TNHH Mela //x-zel.com/san-pham/de-dau-bao-thuong-4-6-vf2050-vf2051/?utm_source=rss&utm_medium=rss&utm_campaign=de-dau-bao-thuong-4-6-vf2050-vf2051 //x-zel.com/san-pham/de-dau-bao-thuong-4-6-vf2050-vf2051/#respond Wed, 03 Jun 2020 06:32:59 +0000 //demo1.x-zel.com/?post_type=product&p=547 The VF2050 and VF2051 Series is designed specifically for use with VES Conventional Models VF2032 Photoelectric Smoke Detector, VF2041 Photoelectric with Heat Smoke Detector, VF2030 Photoelectric Smoke Detector, VF2040 Photoelectric Smoke Detector w/heat, or VF2020 and VF2021 Fixed Temperature/Rate-of-Rise Heat Detector.
The Base is an electronics free 6?base featuring a plastic tamper-lock lug. Each base is equipped with a resistor. Refer to the chart (below) for additional specifications. The VF2050 base is a 4?version of the VF2051 6?base.

?Tải xuống Catalogue VF2050 | VF2051

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4?and 6?Conventional Base
VF2050-00 and VF2051-00  


Standard Features
?Designed for use with all VES conventional sensors
?Available in 4 and 6 inch models
?Contains a security locking tab for tamper protection

Technical Specifications

Alarm Current 93mA (136mA @ 33V max.)
SLC Loop Idle Current 110
Compatibility Identifier HB-3

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]]> //x-zel.com/san-pham/de-dau-bao-thuong-4-6-vf2050-vf2051/feed/ 0 Đầu báo cháy thường - Công ty TNHH Mela //x-zel.com/san-pham/dau-bao-nhiet-loai-thuong-vf20420-00-vf2021-00/?utm_source=rss&utm_medium=rss&utm_campaign=dau-bao-nhiet-loai-thuong-vf20420-00-vf2021-00 //x-zel.com/san-pham/dau-bao-nhiet-loai-thuong-vf20420-00-vf2021-00/#respond Wed, 03 Jun 2020 06:26:10 +0000 //demo1.x-zel.com/?post_type=product&p=544 The VF2020 and VF2021 fixed temperature/rate-of-rise heat detectors are suited to detect in the presence of slow or fast rising temperatures due to burning combustibles.
The construction of these models incorporate a thermistor heat element protected from damage by the built-in, durable plastic guard. These electronic heat detectors incorporate two power/alarm LEDs for 360° indication of status. In standby condition the power LEDs flash Green. In an alarm condition the LEDs latch on Red. The VF2020 and VF2021 electronic heat detection circuitry performs the same function as a Mechanical Device but with Electronic Precision. If the heat rise is less than 12°/minute the detector will not alarm until it reaches its alarm temperature (135° or 190° ± 7.5°F). If the heat rise is greater than 12°/minute the detector will alarm immediately giving an early warning signal and latching the Red alarm LEDs on.

?Tải xuống Catalogue VF2020 | VF2021

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Fixed Temperature Heat Detector
VF2020-00 and VF2021-00


Standard Features
?Choice of fixed temperature/rate-of-rise 135°F or 190°F heat detector
?UL Listed spacing up to 60?by 60?br />?2 or 4 wire base compatibility, relay bases available
?Highly stable operation, RF/Transient protection
?Low standby current, 35µA nominal
?Two built-in power/alarm LEDs for 360° viewing
?Fully electronic operation
?Power/alarm LEDs confirm detector status
?Compatible with VES detectors and their bases
NOTE Bases are not included with detectors, please order separately.

Technical Specifications

Response VF2020 135° ± 7.5°F
VF2021 190° ± 7.5°F
Supply Voltage 17.7 – 30.0 VDC (4 Wire)
Supervisory Current 40µA @ 24V
Surge Current 160µA max. @ 24V
Alarm Current 150mA max. @ 24V
Contact Rating
N/O Contacts		150mA max. @ 24 V
Ambient Temperature 32ºF – 120ºF
Color / Case Material Bone PC / ABS Blend

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]]> //x-zel.com/san-pham/dau-bao-nhiet-loai-thuong-vf20420-00-vf2021-00/feed/ 0 Đầu báo cháy thường - Công ty TNHH Mela //x-zel.com/san-pham/dau-bao-khoi-quang-hoc-loai-thuong-vf2042-00-vf2043-00-vf2044-00/?utm_source=rss&utm_medium=rss&utm_campaign=dau-bao-khoi-quang-hoc-loai-thuong-vf2042-00-vf2043-00-vf2044-00 //x-zel.com/san-pham/dau-bao-khoi-quang-hoc-loai-thuong-vf2042-00-vf2043-00-vf2044-00/#respond Wed, 03 Jun 2020 06:20:06 +0000 //demo1.x-zel.com/?post_type=product&p=542 The VF2042, VF2043, and VF2044 photoelectric smoke detector(s) utilizes one bi-colored LED for indication of status. In a normal standby condition the LED flash Green every 3 seconds. When the detector senses that its sensitivity has drifted outside the UL listed sensitivity window the LED will flash Red every 3 seconds. When the detector senses smoke and goes into alarm the status LED will latch on Red.
The detector utilizes an infrared LED light source and silicon photo diode receiving element in the smoke chamber. In a normal standby condition, the receiving element receives no light from the pulsing LED light source. In the event of a fire, smoke enters the detector smoke chamber and light is reflected from the smoke particles to the receiving element. The light received is converted into an electronic signal.
Fire Judgment signals are processed and compared to a reference level, and when five consecutive signals exceeding the reference level are received within a specified period of time, the time delay circuit triggers the SCR switch to activate the alarm signal. The status LED light continuously during the alarm period.

?Tải xuống Catalogue VF2042 | VF2043 | VF2044

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Conventional Photoelectric Smoke Detector
VF2042-00, VF2043-00, VF2044-00


Standard Features
?UL Listed
?Computer-designed non-directional smoke chamber
?360° view of detector status LED
?Low profile, 2?high (with base)
?2 wire base compatibility.
?Highly stable operation, RF/Transient protection
?Low standby current, 59µA at 24VDC
?One built-in power/sensitivity supervision/alarm LED
?Automatic Sensitivity window verification function meets outlined requirements in NFPA 72, Chapter 2 and 7, Inspection, Testing and Maintenance
NOTE Bases are not included with detectors, please order separately.


Ordering Codes

VF2042-00 Photoelectric / Heat Smoke Detector – Ivory Color
VF2043-00 Photoelectric / Heat Smoke Detector – White Color
VF2044-00 Photoelectric / Heat Smoke Detector without magnetic test feature – Ivory Color
VF2050-00 4?Mounting Base
VF2051-00 6?Mounting Base


Technical Specifications

Rated Voltage 12 or 24VDC
Working Voltage 8 – 35VDC
Maximum Voltage 42VDC
Light Source GaAIAs Infrared Emitting Diode
Standby Current 59µA @ 24VDC
Surge Current 160µA max. @ 24V DC
Alarm Current 150mA max. @ 24V DC
Air Velocity Range 0 – 4000 fpm
Ambient Temperature 32ºF – 120ºF
Color / Case Material Bone PC / ABS Blend
Sensitivity Test Feature Automatic Sensitivity window verification test

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