EJXC40A (DRS)

數位遠端感測器(DRS)傳送器透過專用通訊電纜,遠端連接master(高壓側)和slave(低壓側)sensor,測量壓差。
EJXC40A適用於測量液體,氣體或蒸汽流量以及液位,密度和壓力,並輸出與壓差相對應的4至20 mA直流訊號。

主要特點

  •      高性能,高精度和高可靠性
  •      隔膜密封系統的長毛細管具有更好的性能。
  •      適用於高水箱的液位測量
  •      DRS電纜長度(最大):45米
  •     適用於各種桶槽類型之訊號源

 

Details

數位遠端感測器(DRS)可以多元的解決方案

  • 沒有桶槽高度的限制
  • 穩定的液位測量,溫度效應最小化
  • 單sensor傳感器精度:
    •  跨度0.055%
    •  跨度0.025%(適用於EJX630螺芽安裝/ HAC)


大範圍差壓測量

  • 螺芽類型:高達50MPa
    • 高達70MPa(適用於EJX630-Dcapsule螺芽安裝)
  • 法蘭類型:最高法蘭等級


數位遠端感測器(DRS)連接兩個傳送器,因此不受太陽輻射和溫度變化的影響。

Digital Remote Sensor (DRS)
Items Specifications
Output Signal HART7
Variables PV%/ DP/ Master-P/ Slave-P/ Engr. PV/ Master-T/ Slave-T/ AMP Temperature (Master)/ Output Current Value
Measurement Span Range: 0-0.2/2/10/50MPa  (in case of EJX530A)
Range: 0-0.2/2/10/70MPa  (in case of EJX630A)
(Flange model: up to Flange Rating)
Accuracy +-0.055% of span (single sensor accuracy with flange)
(Accuracy of screwed-mount type is same as normal transmitters’ accuracy 0.04% or 0.025% for EJX630 with /HAC. System accuracy can be calculated by configuration-tool)
Long Term Stability 0.1% of URL per 10 years (All normal operating condition)
Temperature Effect
@50℉ (28℃) change
0.14% span + 0.028% URL (sensor)
(System accuracy can be calculated by Configuration-Tool)
Response Time 250ms (Update Period: 90ms)
Cable length 15/30/45 m

 

參考

摘要:

DP Level transmitter configuration can be very time consuming. Yokogawa DPharp EJA/EJX Pressure transmitters realize reduction in man hours by smart level setup feature.

摘要:

Differential pressure level measurement has an enemy- temperature. Temperature can have a negative effect on the accuracy of level measurement. This article covers why temperature has this effect and how it can be reduced.

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