Yokogawa YOKOGAWA pressure transmitter EJX430B

Yokogawa YOKOGAWA pressure transmitter EJX430B

Pressure transmitters are used to measure the pressure of liquids, gases, or vapors and convert it into a 4-20mA DC current signal output. Pressure transmitters can also communicate with the HART275 manual operator for setting and monitoring purposes

Technical parameters of pressure transmitter

Output: 2-wire system, 4-20mA DC output, digital communication, programmable linear or square root output mode, with the Hart protocol loaded on the 4-20mA DC signal.

Power supply voltage: Working state: 10.5-42V DC Intrinsic safety type: 10.5-30V DC

Digital communication: 16.4~42V DC Intrinsic safety type: 16.4~30V DC

Load: (When the output signal codes are D and E): Working state: 0-1335 Ω Digital communication: 250-600 Ω

Hart communication distance: When using multi-core twisted pair, the communication distance can reach * * * 2Km. The communication distance varies depending on the type of cable. The formula is as follows: L=65000000/(R × C) – (C1+10000)/C

L=length (m and ft)

R=Impedance (Ω, including power impedance)

C=Cable capacitance (pF/m or pF/ft)

C1=* * * Parallel capacitor (pF/m or pF/ft)

Damping time constant: The sum of damping time constants of amplifier components and capsule. The damping time constant of the amplifier components is adjustable within the range of 0.2 to 64 seconds.

Environmental temperature: -40~85 ℃ (-40~185 ° F) -30~80 ℃ (-22~176 ° F) [with LCD meter head]

Liquid receiving temperature: -40~120 ℃ (-40~248 ° F)

Product features:

1. High accuracy, good stability, two wire input (special can use four wire system);

2. Solid state components, plug-in printed circuit boards; Small, lightweight, sturdy and vibration resistant;

3. Range, continuously adjustable external zero point; Positive migration can reach 500%, negative migration can reach 600%

4. Damping can be too adjustable; Good unidirectional overload protection characteristics;

5. No mechanical movable parts, low maintenance workload; Unified structure across the entire series, with strong interchangeability of components;

6. The membrane material in contact with the medium can be selected; (Corrosion resistant materials such as 316L, TAN, HAS-C, MONEL, etc.)

7. Explosion proof structure, all-weather use; Intelligent Hart fieldbus protocol

Technical performance and parameters

Output signal: Two wire system 4-20mA DC

Two wire 4-20mA DC signal superimposed with digital signal (intelligent)

Power supply: 12-45VDC

Power impact:<0.005%/V

Load impact: When the power supply is stable, there is no load impact.

Measurement accuracy: ± 0.2%, ± 0.25%, ± 0.5% of the calibrated range

(The standard accuracy is ± 0.5%. If you choose other accuracies, please indicate them when placing an order.)

Migration characteristics: * * * Positive migration amount of 500%

***Negative migration rate 600%

Note:

The * * * value of negative migration should not exceed one engineering atmospheric pressure.

The upper or lower limit * * * values after migration should not exceed the upper limit value of the * * * measurement range.

***The pressure transmitter cannot perform negative migration.

Damping: Usually adjustable between 0.2 and 1.67 seconds, the time constant will increase when filled with inert liquid or with a remote transmission device.

Start time:<2 seconds, no need for preheating

Working environment: ambient temperature: -29~93 ℃ (analog amplifier)

-29-65 ℃ (with display meter)

Environmental humidity: 0-95%

Protection characteristics: IP65

Explosion proof type: Explosion proof ExdIIBT4

Intrinsically safe ExiaIICT4

Static pressure effect: Zero position error: ± 0.5% * * Range limit value, corrected by zero adjustment for 32MPa under pipeline pressure.

Electromagnetic radiation impact: 0.05% * * * range value, accepted radiation frequency 27-500MHz, test field strength 3V/m.

Vibration impact: ± 0.05%/g when vibrating at 200Hz in any direction.

Installation position: The diaphragm is not installed vertically, which may result in a zero point error of less than 0.24KPa, but can be eliminated by zero adjustment.

横河YOKOGAWA 压变送器 EJX430B
压力变送器用于测量液体、气体或蒸汽的压力,并将其转换为4～20mA DC的电流信号输出.压力变送器也可与HART275手操器互通讯，通过它们进行设定和监控等

压力变送器的技术参数

输出：2线制，4～20mA DC输出，数字通讯，可编程设定线性或平方根输出方式，HART协议加载在4～20mA DC信号上。

电源电压：工作状态：10.5～42V DC 本 安 型：10.5～30V DC

数字通讯：16.4～42V DC 本 安 型：16.4～30V DC

负载：(输出信号代码为D和E时)：工作状态：0～1335Ω 数字通讯：250～600Ω

HART通讯距离：用多芯双绞线时可通讯距离***达2Km。通讯距离因电缆类型而异。公式如下：L=65000000/(R×C)-(C1+10000)/C

L=长度(m和ft)

R=阻抗(Ω ，包括电源阻抗)

C=电缆电容(pF/m或pF/ft)

C1=***并联电容(pF/m或pF/ft)

阻尼时间常数：放大器部件和膜盒的阻尼时间常数之和。 放大器部件阻尼时间常数在0.2～64秒范围内可调。

环境温度：-40～85℃(-40～185?F) -30～80℃(-22～176?F)【带LCD表头】

接液温度：-40～120℃(-40～248?F)

产品特点:

1、准确性高，稳定性好，二线制输入(特殊可四线制);

2、固体元件，接插式印刷线路板;小型，重量轻，坚固抗振;

3、量程，零点外部连续可调;正迁移可达500%，负迁移可达600%

4、阻尼可太调;单向过载保护特性好;

5、无机械可动部件，维修工作量少;全系列统一结构，零部件互换性强;

6、接触介质的膜片材料可选择;(316L、TAN、HAS-C、MONEL等耐腐蚀材料)

7、防爆结构，全天候使用;智能HART现场总线协议

技术性能和参数

输出信号：二线制4～20mA DC

二线制4～20mA直流信号上叠加数字信号(智能)

供电电源：12～45VDC

电源影响：<0.005%/V

负载影响：电源稳定时，无负载影响。

测量精度：调校量程的±0.2%，±0.25%，±0.5%

(标配精度为±0.5%，若选择其他精度请在订货选型时注明。)

迁移特性：***正迁移量500%

***负迁移量600%

注：

负迁移量的***值，不大于一个工程大气压。

迁移后的上限或下限***值，均不应超过***测量范围的上限值。

***压力变送器不能进行负迁移。

阻尼：通常可在0.2～1.67秒之间可调，当灌充惰性液或带远传装置时，时间常数会增大。

启动时间：﹤2秒，不需预热

工作环境：环境温度：-29～93℃(模拟放大器)

-29～65℃(带显示表头)

环境湿度：0～95%

防护特性：IP65

防爆类型：隔爆型 ExdIIBT4

本安型 ExiaIICT4

静压影响：零位误差：±0.5%***量程限值，对于32MPa在管道压力下通过调零给予校正。

电磁辐射影响：0.05%***量程值，接受辐射频率27～500MHz，试验场强3V/m。

振动影响：任何方向200Hz振动时，±0.05%/g。

安装位置：膜片未垂直安装，可能产生小于0.24KPa的零点误差，但可通过调零来消除。