《压力开关说明书》word版
- 格式：docx
- 大小：1.41 MB
- 文档页数：21
下载文档原格式
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
DG型气体压力开关
使用说明书
●请阅读和保持一个安全的地方
解释符号
●, 1, 2, 3 ... = 功能
➔ = 用法说明
所有工作必须在阅读操作说明后才能进行！
警告！不正确的安装、调整、修改、操作或维护可能导致伤害或物质损失。使用前先阅读说明书。这个单位必须安装依照本条例的实施。
标准声明
We, the manufacturer, hereby declare that the products DG.., marked with product ID No. CE 0085AP0467, comply with the essential requirements of the following Directives:
– 90/396/EEC in conjunction with EN 1854,
– 73/23/EEC in conjunction with the relevant standards.
The relevant products correspond to the type tested by the notified body 0085. Comprehensive quality assurance is guaranteed by a certified Quality System pursuant to DIN EN ISO 9001 according to annex II, para-graph 3 of Directive 90/396/EEC.Elster Kromschröder GmbH, Osnabrück
测试
➔电源电压、环境温度和外壳——看类型的标签。
➔最大介质温度:-15 + 80°C。在系统暴露于更高的热应力、热设备上时压力开关必须安装在上游。
DG..B型
➔正压时1号位置为进气
DG..U型, DG..H型, DG..N型
➔正压时1号或者2号位置为进气，气体为空气、天然气或者烟气（其他位置密封），通风时气体从3号或者4号位置离开。
➔负压时3号或者4号位置为进气，气体为空气、天然气或者烟气（其他位置密封），通风时气体从1号或者2号位置离开。
➔对于压差时，用1号或2号和3号或4号，气体为空气、天然气或者烟气，其他位置密封。
➔在连接3号和4号位置时使用过滤垫，防止气体中的杂质弄脏电触点。
➔ DG..B, DG..U switch with rising pressure.
➔ DG..H switches and locks off with rising pressure – with manual reset.
➔ DG..N switches and locks off with falling pressure – with manual reset.
➔ Fit an upstream restrictor if the system is subject to greatly fl uctuating pressures (see acces-
sories).
➔ The service life will be shorter if subject to ozone concentrations exceeding 200 µg/m3.
Installation
➔Fitting position as required, pref-erably with diaphragm vertical, with unobstructed view of the adjustment dial. Ensure that no dirt or moisture can penetrate open ventilation ports.
➔ The housing may not contact masonry. Minimum clearance 20 mm.
➔ Avoid subjecting the DG to strong or violent vibrations.
➔ Condensation must not be allowed to get into the housing. At subzero temperatures malfunctions/failures due to icing can occur.
➔ When using silicone tubes, only use silicone tubes which have been sufficiently cured.
➔ Continuous operation at high temperatures accelerates the ageing of elastomer materials.
➔ Protect from direct sunlight (even with IP 65).
DG..B..S
➔ Do not connect gas but only O2 or NH3 to the positive pressure port 1.Ensure that no grease is used during installation.
DG
1 Flush the pipework.
2 Use suitable sealing material.
3 If dirt can accumulate at port
3 or 4, use the fi lter, Order No. 74916199.
4 Fit the DG.