甲醇液位计

合成氨专用液位计Synthesis ammonia special fluid level gauge一、产品简介 Product Introduction 本品为涉及一种在化肥厂氨分离器或冷交换器上使用的控制分离器或冷交换器内液态氨液位的合成氨专用液位计 This product is involving the synthesis ammonia special fluid level gauge used on the ammonia separator or cool exchanger of fertilizer plant to control the liquid ammonia level inside the separator or exchanger. 合成氨专用液位计背景技术：目前在合成氨车间使用的液位计，均采用模拟电路控制技术，其主要缺点有以下几点：For the background technology of synthesis ammonia special fluid level gauge, at present the fluid level gauges used in the synthetic ammonia workshop are all adopting the analog circuit control technology, but it shall also have the disadvantages as following: 1.首次安装液位计，首次校准时，零点和量程值相互影响，必须反复调整若干次，才能安全校准。While installing the level gauge at first time, to make first calibration, the zero point and measuring range value shall impact each other, it must to adjust several times repeatedly so that to gain the safe calibration 2.电路板损坏现场更换时，由于设备上的液位不容易保持到标准的零点和量程位置，根本无法校准零点和量程位置 While replacing the damaged circuit board, because that the fluid level on the equipment really can not keep at the standard zero point and measuring range position easily, it simply cannot calibrate the zero point and measuring range position 3. 温度漂移大，稳定性差。元器件温漂或者线性差时，模拟电路很难对这些性能修正，造成仪表精度下降和稳定性差 Due to the large temperature drift, the stability is quite poor. Where there’s the temperature drift or linear difference on the component, the analog circuit really can hardly correct these performances, thus causes the decreased instrument accuracy and poor stability 合成氨专用液位计发明目的：本实用新型的目的在于克服现有技术中存在的不足而提供一种精确度高、调教简单、安全可靠、抗干扰性能强、现场更改工作方式灵活方便的合成氨专用液位计 The aim for inventing the synthesis ammonia special fluid level gauge: this new utility model is aiming to overcome the existed deficiency in current technique and then provide a synthesis ammonia special fluid level gauge with higher accuracy, simple adjustment and calibration, safety and reliability, strong anti-interference capability, flexible and convenient means to change work mode on site 本实用新型设计一种在化肥厂氨分离器或冷交换器上用的控制分离器或冷交换器内液态氨液位的合成氨专用液位计，传感器信号输出端与电容电压信号转换电路输入端相连，时钟发生器集成电路与电容电压信号转换电路输入端相连，单片机微处理系统输出端上设有PC机通讯接口和液晶显示接口，单片机微处理系统输入端还连有按键矩阵电路，单片机微处理系统输出端上还连有电压电流转换模块，电压电流转换模块输出输入端口通过两线制模式与24v电源输入端相连，电压电流转换模块输出端为整机提供基准电压，具有精确度高、调校简单、安全可靠、抗干扰性能强、更改工作方式灵活方便的优点。 This new utility model is designated for a synthesis ammonia special fluid level gauge to be used in the ammonia separator or cool exchanger of fertilizer plant for controlling the liquid ammonia level in the separator or cool exchanger, the output end of sensor is connected with the input end of capacitance- voltage signal conversion circuit, clock generator integrated circuit is also connected with the input end of capacitance- voltage signal conversion circuit, the PC communication interface and LED display interface are all set on the output end of the DSP micro processing system, at the output end of DSP micro processing system there also connected with the key matrix circuit, the voltage-current conversion module is also connected with the output end of DSP micro processing system, the input/ output interface of voltage-current conversion module are connected with the input end of 24V power supply via the 2-line system mode, the output end of voltage-current conversion module can provide the whole machine with the reference voltage, it has the advantages such as high accuracy, simple adjustment and calibration, safety and reliability, strong anti-interference capability, flexible and convenient means to change work mode on site 二、合成氨专用液位计特点 Features of synthesis ammonia special fluid level gauge 1.按键设置零点和量程，操作简单； To set the zero point and measuring range by the keys, the operation is quite simple 2.在现场输入任意两点液位真值，自动计算和储存零点和量程值 To input the real fluid level value between any two points on site, it can calculate and store the zero point and measuring range automatically 3.采用数字修正处理技术，精度高，稳定性好。By adopting the digital adjustment processing technology, it has the high accuracy with good stability. 三、产品图片 Product photo 四、合成氨专用液位计技术参数 The technique specification for synthesis ammonia special fluid level gauge Measuring range: optional within the range of 300-5000mm 测量范围：300-5000mm范围内任意选用Working pressure 工作压力：0-40MPaOutput signal 4-20mA can be overlapped with HART 输出信号：4-20mA可叠加HARTAccuracy grade 精度等级：0.5% FS；Explosion-proof symbol: 防爆标志：ExibllBT5 Gb Installation mode: flange mounting安装方式：法兰连接Applicable medium: liquid ammonia, methanol etc. 适用介质：液氨、甲醇等介质； 五、安装示意图 Installation diagram 六、产品选型 Product selection FY2BN合成氨液位计选型表 Selection table for synthesis ammonia fluid level gauge 产品Product类型 Type1合成氨专用（耐压22MPa)≤200℃For synthesis ammonia only (pressure resistance 22MPa) ≤200℃2合成氨专用（耐压32MPa)≤200℃For synthesis ammonia only (pressure resistance 32MPa) ≤200℃输出Output信号SignalA4-20mA信号输出，液晶显示4-20mA signal output, LED display B4-20mA+HART协议，液晶显示4-20mA + HART protocol, LED display代码Code测量范围Measuring rangeL1500mmL21000mmL()特殊规格请在括号内填写Special requirement please fill in the brackets代码Code 接液材质Fluid receiving materialD请在订货时备注Please specify while ordering 连接方式Connection modeF法兰安装(需提供公称直径）Flange connection (nominal diameter shall be provided)M螺纹安装（需提供尺寸）Screw thread mounting (dimension shall be provided)特殊要求请备注Special request please leave remark accordingly.合成氨液位计Synthesis ammonia fluid level gauge 七、Ordering instructions: 测量范围 Measuring range工作压力 Working pressure连接方式 Connection mode 测量介质 Measuring medium

MH系列超声波液位计/超声波物位计是一台博采众长，吸取了国内外多种物位仪优点，实现了全数字化，人性化设计理念的通用型两线制物位仪，采用进口工业级单片机，数字温度补偿和宽电压输入稳压等专用集成电路。其电路主板采用优质贴片元器件，贴片式键盘，使产品性能更稳定工作更可靠。由于为非接触式检测方式，较其它仪器更卫生，更耐潮湿、粉尘、高温、腐蚀气体等恶劣环境,因此可广泛应用于与料位，液位测控相关的各个领域。【超声波液位计产品特点】 ◆ 具有抗干扰性强。可任意设置上下限节点及在线输出调节，并带有现场显示，可选择模拟量，开关量及RS485输出，方便的与相关设施接口。 ◆ 采用聚丙烯防水外壳。壳体小巧且相当坚固，具有优良的耐化学品性，对于无机化合物，不论酸、碱、盐溶液，除强氧化性物料外，几乎都对其无破坏作用，对几乎所有溶剂在室温下均不溶解，一般烷、烃、醇、酚、醛、酮类等介质上均可使用。 ◆ 重量轻、不结垢、不污染介质。 ◆ 无毒性。可用于药品、食品工业设备安装，维修极为方便。 ◆ 不必接触工业介质就能满足大部分物位测量要求，从而彻底地解决了压力式、电容式、浮子式等传统测量方式带来的缠绕、堵塞、泄露、介质腐蚀、维护不便等缺点。 【应用领域】☆ 水及污水处理 泵房、集水井、生化反应池、沉淀池等 ☆ 电力、矿山 灰浆池、煤浆池、黄油储罐、堆料场或部分移动设备控制等 ☆食品工业 酒厂、粮仓、食品材料装盛槽罐等 ☆ 控制系统配套使用 ☆ 高危化工行业 焦化厂、化肥厂及煤矿行业等 【超声波液位计技术参数】量 程：0～5M，0～8M,0～10M盲 区：0.3M, 0.5M发 射 角：12°最小显示分辨率：1MM精 度：±0.3%温度补偿：自动温度补偿显 示：四位八段LED输出信号：4～20mA；HART；RS485工作电压： DC12—30V，功耗1.5W外形尺寸：Φ79mm×210mm× G1 1/2；外壳材质：ABS工程塑料/铸铝表头；换能器：PP连接方式：螺纹连接或螺环固定安装方式：G1 1/2管螺纹或 ￠47mm圆孔防护等级：IP65,IP68【超声波液位计工作原理】超声波物位计工作原理是由超声波换能器（探头）发出高频脉冲声波遇到被测物位（物料）表面被反射折回反射回波被换能器接收转换成电信号.声波的传播时间与声波的发出到物体表面的距离成正比.声波传输距离S与声速C和声传输时间T的关系可用公式表示：S=C×T/2.探头部分发射出超声波，然后被液面反射，探头部分再接收，探头到液（物）面的距离和超声波经过的时间成比例：hb = CT2 即距离 [m] = 时间×声速/2 [m]声速的温度补偿公式：环境声速= 331.5 + 0.6×温度【超声波探头安装注意事项】1、探头的安装是非常关键的。探头同时产生超声脉冲波和检测回波。超声脉冲波以一定的锥形波面从探头的表面传播出去。在这个区域内，不应有任何阻碍并且远离进料口。探头的安装位置应选择在探头的发射面和被测介质间没有障碍物存在的位置。见图一。2、在安装探头时需考虑容器的形状。如果探头安装不正确，一定形状的容器将产生二次回波。这类问题主要集中在圆锥形以及球形罐顶部。这种特殊的形状可以将发射出的回波再聚焦放大产生错误读数。选择正确的安装位置可以解决这一问题，如球形罐顶安装于离最高点1/3R的位置（R为球顶半径），如上图。【生产能力】年产一万套【公司网站】 【销售热线】，关注微信服务号,服务更便捷！西安上太仪表感谢您关注本公司产品！依托古都西安坚实的工业基础、强大的科研能力，汇集西部尖端人才，上太人以“严谨、务实、创新”为理念，为客户奉献行业精品。我们郑重承诺，本公司产品从出厂之日起12个月三包，出现非人为损坏质量问题，本公司负责包修、包换、包退，并提供终身维护服务。

一、产品简介 Product introduction FY2BL系列缆式液位计，是我公司专门针对宽范围量程研制的一种高精度产品，该系列产品运用智能电容原理，采用新一代微电脑处理技术，将传感器信号转化为数字信号，通过MCU进行温度，线性补偿和系列功能设置，探极则采用了软聚四氟乙烯护套耐高温同轴电缆作为传感导线制作而成，适合各种污水池，高温地下水、酸碱溶液等介质液位的测量，具有体积小，安装方便，耐高温耐高压，耐腐蚀等优点，测量范围宽，性比价高。The cable-type fluid level gauge in FY2BL series is such a high accuracy product our company has made for the wider measuring range in specialty, by using the intelligent capacitance principle and adopting the new generation microcomputer processing technology, this series of product can convert the sensor signal into digital signal, to make the temperature/ linear compensation and the series of function configuration through MCU the probe is made with the high temperature resistance coaxial cable with soft PTFE shield sleeve as sensing lead, it’s suitable for the fluid level measurement in those mediums such as various sewage pools, underground water with high temperature and acid/ alkali solution etc. With the advantages of its small size, convenient installation, high temperature/ pressure resistance and anti-corrosion etc, it has the wider measure range and high cost-effective. FY2BL系列缆式液位计作为本质安全型产品符合 GB3836.1-2010《爆炸性气体环境用电气设备第1部分：通用要求》和GB3836.4-2010《爆炸性气体环境用电气设备第4部分：本质安全型“i”》的有关要求，防爆标志为：ExibIIBT5 Gb，适用于 1 区、2区，含有IIA～IIB类，温度组别为T1~T5的爆炸性气体混合物的危险场所。As intrinsically safe product, the cable-type fluid level gauge in FY2BL series complies with the relative requirements as per in GB3836.1-2010 –the Electronic Equipment Used in Explosive Gas Environment, Part One: General Requirement and the GB3836.4.2010 – the Electronic Equipment Used in Explosive Gas Environment, Part Four: Intrinsically Safe Type “i”, its explosion-proof symbol is ExibIIBT5 Gb, can be used in Zone 1 and Zone 2, the hazardous place where containing the explosive gas mixture in class IIA~IIB, and temperature category T1~T5. 二、主要产品指标 Main performance of product Measuring range: optional within 0.5~10m range测量范围：0.5-10m范围内任意选用；Working pressure 工作压力：-0.1MPa~10MPa Working temperature 工作温度：-50°～200°C Material for detection probe: 探极材质：PTFE Output signal: 输出信号：4-20mA DC、4-20mA叠加HART协议 Accuracy grade:精度等级：0.5%FS Mounting mode: 固定方式：1.螺纹安装 screw thread mounting 2.法兰安装， Flange mounting 3.特殊要求请在订货前说明 special requirements please specify beforeExplosion-proof symbol: 防爆标志：ExibllBT5 Gb；适用介质：液氨、甲醇、铜液、丙碳液、脱硫液等对聚四氟乙烯无腐蚀的任意介质；Applicable medium: any medium like liquid ammonia, methanol, cooper solution, C-carbon solution, desulfurized solution etc that not corrosive to PTFE. 三、产品外形 Product appearance 四、安装示意图 Installation diagram 在密封容器安装 在敞口容器安装 Installation in sealed container Installation in open container Electric box Electric box Flange Mounting bracket Sensing lead Sensing lead Sealing head Sealing head Counterweight Counterweight 五、选型表 Selection table FY2BL智能电容缆式液位计选型表 Selection table for intelligent capacitive cable-type fluid level geuge产品Product类型 Type1额定压力≤1.6MPa；温度100°CRated pressure ≤1.6MPa, temperature ≤100°C 2额定压力≤2.5MPa；温度150°C Rated pressure ≤2.5MPa, temperature ≤150°C输出Output信号 Signal A4-20mA信号输出，液晶显示4~20mA signal output, LED displayB4-20mA+HART协议，液晶显示4~20mA+HART protocol, LED display代码测量范围L10-3000mmL20-5000mmL()特殊规格请在括号内填写Special requirements please fill in the bracket代码Code 接液材质Fluid receiving materialD请在订货时备注Please remark while ordering连接方式Connection modeF法兰安装(需提供公称直径）Flange mounting (nominal diameter shall be provided) M螺纹安装（需提供尺寸）Screw thread mounting (dimension shall be provided) 特殊要求请备注Special request please leave remark accordingly.智能电容缆式液位计Intelligent capacitive cable-type fluid level gauge 六、订货须知：Ordering instructions: 1、测量范围 Measuring range2、工作压力 Working pressure3、连接方式 Connection mode 4、测量介质 Measuring medium