系按GB3836.1 83《爆炸性环境用防爆电气设备通用要求》和GB3836.2 83《爆炸性环境用防爆电气设备隔爆型电气设备“d”》的有关规定及相关标准进行设计，并经由国家指定的检验机构所审批的图样和技术文件进行制造。 Explosion-proof electrical contact pressure gauges are designed in accordance with the relevant regulations and relevant standards of GB3836.1 83 "General Requirements for Explosion-proof Electrical Equipment for Explosive Environments" and GB3836.2 83 "Explosion-proof Electrical Equipment for Explosive Environments" Flameproof Electrical Equipment "d" " , And manufactured through the drawings and technical documents approved by the country's designated inspection agency.
的防爆类别为Ⅱ类隔爆型B级T4组，其标志为ExdⅡBT4。 The explosion- proof category of explosion-proof electrical contact pressure gauges is Class II flameproof type B T4 group, and its mark is ExdⅡBT4. The instrument is suitable for measuring the pressure of non-crystalline, non-solidified explosive mixtures or various non-explosive media in places with explosion danger. The instrument can be used with electrical devices (such as relays and contactors) with corresponding explosion-proof performance or corresponding safety measures to achieve the purpose of automatic control and signalling (alarm) to the controlled system. Main technical index accuracy level: 1.5 Scale range: 0 ~ 0.16; 0 ~ 0.25; 0 ~ 0.4; 0 ~ 0.6; 0 ~ 1; 0 ~ 1.6; 0 ~ 2.5; 0 ~ 4; 0 ~ 6; 0 ~ 10; 0 to 16; 0 to 25; 0 to 40; 0 to 60; -0.1 to 0.06; -0.1 to 0.15; -0.1 to 0.3; -0.1 to 0.5; -0.1 to 0.9; -0.1 to 1.5; -0.1 ～ 2.4Mpa Control mode: Upper and lower limit slow-moving contact switch Maximum working voltage: DC 220V or AC 380V; Contact power: 10VA Working position: Vertical installation Use environment conditions: -10 ～ 50 ℃, relative humidity not more than 80%, and Explosive mixtures should belong to Group IIB T4 or lower. The working vibration and the rapid pulsation of the measured medium should not affect the reliable operation of the instrument contacts. Temperature influence: The displayed value is not greater than 0.4% / 10 ° C, and the set point is not greater than 0.6% / 10 ° C (the use temperature deviates from 20 ± 5 ° C). Insulation strength: 50Hz sine AC 2000V for one minute Weight: 6kg
使用、维护与检修：1、仪表应安装在周围环境－20℃~ 40℃，相对温度不大于80%，海拔高度低于2000m，在按装地点，月平均气温不高于＋30℃，由于温度的变化，允许在压力表的表面产生凝霜，被测介质温度＜70℃，（如果用于蒸汽等高温介质测量时，应选用耐温防爆电接点压力表）。 Use, maintenance and inspection of explosion-proof electrical contact pressure gauges : 1. The instrument should be installed in the surrounding environment -20 ℃ ~ 40 ℃, the relative temperature is not more than 80%, and the altitude is lower than 2000m. At the installation site, the average monthly temperature is not higher than + 30 ° C. Due to the temperature change, frost is allowed on the surface of the pressure gauge, and the temperature of the measured medium is <70 ° C. (If it is used for the measurement of high-temperature media such as steam, a temperature-resistant and explosion-proof electrical contact pressure gauge should be used). 2. The instrument must be installed vertically, and strive to maintain the same horizontal position as the measuring point, otherwise the additional error caused by the liquid level difference should be taken into account. 3, the electrical circuit of the meter, carefully check and carry out trial operation after connection. 4, the pressure part of the instrument generally uses the upper pressure of 3/4. 5. When adjusting the instrument order (by adjusting the knob, adjust the upper and lower limit pointers to the given value), first adjust the given value of the lower line and then adjust the given value of the upper line. 6. Turn off the power when opening the outlet box or adjusting the given value range.