智能压力/差压/液位变送器Intelligent pressure/differential pressure/leve
特 点
● 由于采用了微处理器而使灵活性增大、功能增强；
● 具有较强的自诊断能力；
● 零点和量程调整互不影响；
● 兼有完善的远程和就地设定、调校功能；
● 二线制，符合HART协议可与HART协议终端通信而不中断输出；
● 采用数字化补偿技术对温度及静压进行补偿；
● 稳定性能好，精度高，阻尼可调，抗单向过载能力强；
● 无机械传动部件，维修工作量少，坚固抗振；
● 全部通用件，方便维护；
● 接触介质的膜片材料可选，可全天候使用；
技术性能
使用对象： 液体、气体或蒸汽
测量范围： 见选型规格表
输出信号： 4～20mA dc.输出，叠加HART协议数字信号（两线制）
电 源： 外部供电24V dc.，电源范围12V～45V
危险场所安装： 隔爆型dIICT5;
本安型 iaIICT5;
技术指标
(在无迁移、316不锈钢隔离膜片及其他标准测试条件下。)
精 度：±0.1%，±0.075%
应用及选型：
普通型压力变送器是工业过程控制中最为常用的一种检测仪表，其广泛应用于各种自控系统，如航空航天、军工、石化、化工、油井、电力、船舶、建材、管道等众多行业。一般用在液体、气体或蒸汽的压力或绝对压力的测量，介质温度不太高，腐蚀性不强，粘稠度不高，不容易结晶等环境。
选型注意：
用户在选型前明确被测介质的温度，腐蚀性，测量范围，用途，是否防爆，是否需要禁油处理，介质是否容易结晶或粘稠需要膜盒法兰连接等。
Features
● The flexibility and functionality have been enhanced due to the use of a microprocessor;
● It has a strong self-diagnosis capability;
● Zero point and range adjustments do not affect each other;
● It has complete remote and local setting and calibration functions;
● Two-wire system, compliant with HART protocol, can communicate with HART protocol terminals without interrupting output;
● Digital compensation technology is adopted to compensate for temperature and static pressure;
● Good stability, high accuracy, adjustable damping, strong anti-unidirectional overload capacity;
● No mechanical transmission components, less maintenance workload, sturdy and shock-resistant;
● All universal components, convenient for maintenance;
● The diaphragm material in contact with the medium can be selected, and it can be used all day long;
Technical Performance
Application Object: Liquids, gases or vapors
Measurement Range: See the selection specification table
Output Signal: 4~20mA dc. output, combined with HART protocol digital signal (two-wire system)
Power Supply: External power supply 24V dc., power supply range 12V~45V
Installation in Hazardous Areas: Flameproof type dIICT5; Explosion-proof type iaIICT5; Technical indicators
(Under non-migration, 316 stainless steel diaphragm and other standard test conditions. )
Accuracy: ±0.1%, ±0.075%
Application and selection:
The general-purpose pressure transmitter is one of the most commonly used detection instruments in industrial process control. It is widely used in various automatic control systems, such as aerospace, military, petrochemical, chemical, oil wells, power, ships, building materials, pipelines and many other industries. It is generally used for the measurement of pressure or absolute pressure of liquids, gases or steam, with medium temperatures not too high, corrosion not strong, viscosity not high, and not prone to crystallization.
Selection considerations:
Before selecting, users should clearly know the temperature of the measured medium, corrosion resistance, measurement range, application, whether explosion-proof is required, whether oil-free treatment is needed, whether the medium is prone to crystallization or viscosity, and whether membrane diaphragm flange connection is needed.
