Test Background
The purpose of the low-temperature storage test is to test whether marine instruments can be stored and operated in a long-term low-temperature environment, and to determine the adaptability and durability of marine instruments for storage and operation under low-temperature conditions, as well as the physical and chemical properties of materials at low temperatures.
Zhongke Testing Reliability Experiment Center has environmental testing capabilities for various marine instruments, and provides professional low-temperature storage testing and other environmental testing services for marine instrument products.
Scope of tests
Marine instruments are classified according to different environmental conditions of use and are divided into four categories:
1. Instruments for shore stations: such as marine instruments installed and used on coastal stations, offshore fixed platforms and islands.
2. Instruments for ships and buoys: such as marine instruments used on various types of ships, buoys and other mobile offshore platforms.
3. Underwater instruments: such as marine instruments or sensors used in seawater.
4. Satellite and aeronautical instruments: The environmental testing of such instruments should adopt other environmental testing standards based on the characteristics of the environmental conditions in which they are used.
test temperature
Unless otherwise specified, the low-temperature storage test temperature of marine instruments should be selected from the following values:
a) (-40±3)℃;
b) (-55±3)℃;
c) (-65±3)℃;
Unless otherwise specified, the duration of the cryogenic storage test of marine instruments shall be selected from the following values:
a) 8h, suitable for general marine instruments;
b) 24h, suitable for marine instruments containing limit glass, etc.
Test standard:
GB/T 32065.1 -2015 Marine Instrument Environmental Test Methods Part 1: General Provisions
GB/T 32065.3-2015 Environmental test methods for marine instruments Part 3: Low temperature storage test
GB/T 2423.1-2008 Environmental testing of electrical and electronic products Part 2: Test methods Test A: Low temperature
GB/T 2951.14-2008 General test methods for insulation and sheath materials of electric and optical cables Part 14: General test methods Low temperature test
GB/T 12085.2-2022 Optics and photonics Environmental test methods Part 2: Low temperature, high temperature, and damp heat
