VentisProCN
2017-02-21 14:50:08 0 举报AI智能生成
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抱歉，暂无相关内容 VentisProCN是一款高效、专业的通风系统解决方案，专为满足中国市场需求而设计。凭借其先进的技术和创新的设计，VentisProCN为用户提供了卓越的空气净化和舒适度，适用于各种商业和住宅环境。通过精确的气流控制和智能化的监控系统，VentisProCN确保了室内空气质量的持续改善，同时降低了能源消耗和维护成本。此外，VentisProCN还具备高度可定制性，能够满足客户独特的需求和预算。总之，VentisProCN是您理想的通风系统选择，为您的生活和工作环境带来清新、舒适的空气。
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UL2075
Introduction
Scope
General
Glossary
Alarm，Sensor and/or Detector Reliability Prediction
Section 2.0 MIL-HDBK 217F: 4 failures per milliion hours
Appendix A MIL-HDBK 217F: 3.5 failures per million hours
4.2 Reliability Prediction for a sensor or a individual components
Section 3.4 MIL_HDBK 217F: 2.5 failures per million hours
4.3 Components Exception for the above test
b) Does not effct the normal operation or sensitivity
c) evaluated by specific performance tests included in the standard
4.4 Exceptions: integral or remote accessory
4.5 For Customed Chips: Less than 2.5 failure per million
Test Method: See Appendix SA
4.6 Sensor or sensing component supervision system
a) MIL 217-F : less than 2.5 failures per million hours operation
b) Supervision of the predicted failure mode
c) Supervision of sensor drift beyond 5% of the predicted operation range
Installation and Operation Instructions
Document for test
Compatibility
CONSTRUCTION
Assembly
Remote Access
Sensitivity indicating means
All Products
Enclosure
9.1 General
9.2 Metallic Material
9.3 Polymeric meterial
9.3.1 need to comply with UL 746C
9.3.3 Conductive coating to nonmetarial surfaces shall comply with UL746C
9.3.4 A polymeric enclosure for connection to a rigid metallic conduit
9.4 Sensitivity Adjustment
Removal of a snap-on cover to gain access to the sensitivity control ispermissible only when no hazardous voltage parts are able to be contacted by the user
9.5 Supplementary signal feature
be evaluated to the applicable requirements and determined suitable for its intended application
9.6 Sharp edges
needs to round the corner as not to injury user
9.7 Ventilating opening
Ventilating openings request
perforated sheet metal used for expaned metal mesh shall not be less than 0.042 inch in average thickness when zinc coated
The size of wire forming a screen protecting hazardous-voltage parts shall not be smaller than 16AWG and the screen openings shall not be greater than 1/2 square inch
9.8 Covers
Request for enclosure cover
The request for periodic maintenance remove cover
hinged cover is not required where the only fuse enclosed is intended to provide protection to portions of internal circuits.
9.9 Battery Removal Indicator
request
9.10 Transparent Panel
thickness request for glass cover
other transparent material request
mechanically equivalent to glass
not distort
not become less transparent at the temperature (normal service conditions)
an opening in an enclosure shall have aminor dimension less than 1 inch
shall not be contacted by the probe(page 24)
9.11.2 The request for the probe detect
apply to any depth
e ratated and angel to any position
applied in any possible configuration
9.11.3 using the probe
used to measuring instrument to evaluate the accessibility of opening
not to evaluate the strength of a material
applied with minimum force
the part of enclosure can be removed or opened without tool should be removed or opened
10 Spacing
10.1 Spacing between uninsulated live parts an d the enclosure or dead metal parts and between uninsulated live parts of opposite polarity
10.2 PCBA Clearance A
10.3 PCBA Clearance B
10.4 Pollution degree
10.5 Switching test
11 Corrison Protection
WIRING
12 Permanent Connection
12.1 General
12.2 Field-wiring compartment for hazardous voltage connection
12.3 Field-wiring terminals
12.4 Field-wiring leads
12.5 Grounded supply terminals and leads
12.6 Internal Wiring
13 Servicing Protection
13.1 General
13.2 Trained service personal
Performance
14 General
15 Sensitivity requirements
15.1 The requirements to the sensitivity
a) This standard
b) UL2034
d) TWA required by NOISH
e) ANSI ISA 12.13.01 Alarm for signal up to and above LEL
15.2 Special claims should be verified
15.3 Verify each gas for detector
15.4 Verify each gas for sensor
15.6 Calibration
Calibration procedure shall be outlined in Instrument Manual and verified
15.7 Test Equipment
a) Chamber at least 1 cubic foot(0.0283m3)
b) Ambient temperature at 23+/-3 degC or a higher temperature
c) Relative humidity at 50+/- 20 percent
d) Oxygen concentration at 20.9+/-1 percent
15.8 selectivty
15.8.3 ventilate the chamber for 15min +/- 5 min
15.8.4 add substance by syringe or equivalent device.
15.8.5 remain the device for 2 hours
15.8.6 remove the test atmosphere and maintain clean air for 16hours
then repeat by the next substance
15.8.7 do the sensitivity
16 Sensitivity Requirements
16.1 shall operate for all conditions of its intended performance
16.2 shall consistently alarm at levels within 5 percent of the gas concentration levels
16.4 test gas or vapor individually as specifed
17 Electrical Supervision Test
17.1 General
17.1.1 Four siturations which the alarm should work in 200 seconds
a) An instantaneous failure or removal of a limited life components
Exception: the alarm power removed
b) An open in an externally connected alarm circuit
c) Electronically or optically detectable failure modes because of aging
d) A ground fault in any externnally connected wiring
17.1.2
Wiring between alarms to a control assembly shall be electrically supervised
An open in the wiring between alarms is not required if the operation as a single station is not prevented
Exception: interconnected wiring of alarms intended to be connected by a Class 1 wiring method
Exceptions: sensor with a failure rate less than 2.5 failure per million hours is not required to be supervised.
17.1.4 How to test electrical supervision
17.1.5 the gas alarm or sensor's priority is higher than other fault alarm
17.2 AC Powered units
17.3 Battery powered units
?? 7 days
17.3.2 Test 17.3.1 3 sample ; placed in alarm for 12 hours; test 7 days trouble alarm.
17.3.4 How to test 17.3.3
17.4 Components Failure
17.5 External Wiring
18 Strain Relief Test
18.1 Cord-connected products
18.1.1 define
18.1.2 How to do test
18.2 Filed-connected leads
18.2.1 Request to field-connected leads
18.2.2 Exception for ploymeric meterial
19 Circuit Measurement Test
19.1 Current Input
19.2 Battery trouble voltage determination
19.2.1
19.2.2 trouble level of battery operated alarm shall be determined for
a) rated battery voltage
b) Trouble level voltage
c) voltage between rated and troulbe level voltage
20 Electric Shock Current Test
20.1 Exposed open circuit exceeds 42.4V should comply with 20.2 &20.4
20.2 continuous current flow through a 500-ohm resistor shall not exceed the values specified in Table
20.3
20.4 The capacitance value limit table
20.5 ??
20.6 ??
20.8
21 OverVoltage Test
21.1
22 UnderVoltage Test
23 Drop Test
24 Dust Test
25 Static Discharge Test
27 Jarring Test
28 Flooding with Undiluted Gas Test
29 Variable Ambient Temperature Test
30 Humidity Test
31 Leakage Current Test
32 Transient Tests
33 Stability Test
34 Temperature Test
35 Abnormal Operation Test
36 Overload Test
37 Endurance Test
38 Burnout Test
39 Power Supply Tests
40 Tests of Thermoplastic Materials
41 Class 2 and Class 3 Power-Limited Circuits Test
42 Dielectic Voltage-Withstand Tests
43 Dielectic Voltage-Withstand Tests in lieu of measuring clearance
44 Mechanical Strength Tests for Metal Enclosures and Guards
45 Corrosion Tests
46 Vibration Tests
47 Battery Tests
48 Audibility Test
49 Field Service Tests
Making and Instructions
50 Marking
51 Installation Wiring Diagram
Manufacturing and Production Tests
52 General
53 Sensitivity Calibration Tests
54 Measurement of In-Service Reliability
55 Production Line Dielectic Voltage-Withstand Tests
56 Production Line Grounding Continuity Tests
57 Audibility Test
58 Alarm Shipment
Supplement SA: Reliability and Failure determination information
Appendix: Manufacturing and Production Tests
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