DY025-EALBJ4-0D流量計
特性: digitalYEWFLO渦街流量計
- SSP(頻譜信號處理)技術的新功能
SSP分析digitalYEWFLO渦街流量計內(nèi)的流體情況,根據(jù)分析數(shù)據(jù)自動選擇與該工況對應的佳調(diào)節(jié),從而提供以往的渦街流量計無法實現(xiàn)的性能。
SSP可感知低流量范圍內(nèi)的旋渦,從而顯著地提高了流量輸出的穩(wěn)定性。 - 的自診斷功能
可預測并顯示應用工況的變化,如較大的管道振動、流態(tài)異常等。 - 高精度
讀數(shù)的±0.75%(液體)
讀數(shù)的±1.0%(氣體、蒸汽) - 流體溫度范圍
高溫型高達450℃
低溫型低-196℃ - 參數(shù)設定簡便
使用頻繁的參數(shù)組合在一起,從而減少了參數(shù)設定時間。 - 顯示清晰簡明
可在過程診斷的同時顯示瞬時流量及累計流量。 - 模擬/脈沖雙重輸出
同時輸出流量和脈沖。 - 報警輸出
報警發(fā)生時報警信號輸出。 - BRAIN/HART通信和按鍵開關
- 符合NACE標準
- 符合NAMUR 43標準
- 遠程電纜長度長30m
Mounting:
Integral type and Remote type detector :
Flange mounting or wafer mounting by
flange adjacent to the pipeline.
Remote type converter : 2 inch pipe mounting.
Electrical Specifications
Note*: Pulse outputalarm output and status output use
the common terminal therefore these functions
are not used simultaneously.
Output Signal (): Dual Output (Both Analog and
Transistor contact output can be obtained
simultaneously). In this case refer to the item
“Remarks on installation” for power supply
and pulse output wiring.
Analog : 4 to 20 mA DC 2-wire system.
Transistor Contact Output* :
Open collector 3-wire system.
Pulsealarmstatus output are selected by
parameter setting.
Contact rating: 10.5 to 30 V DC 120 mA DC
Low level: 0 to 2 V DC. (refer to Figure3)
Communication Requirements :
Communication Signal :
BRAIN or HART communication signal
(superimposed on a 4 to 20 mA DC
signal)
Note: HART is a registered trademark of the HART
Communication Foundation.
Conditions of Communication Line :
Load Resistance :
250 to 600 Ω(including cable resistance).
Refer to Figure 2.
Supply Voltage :
16.4 to 42 V DC for digital communications
BRAIN and HART protocols .(16.4 to 30 V
DC for intrinsically safe type).
Refer to Figure 2.
BRAIN:
Space from other Power Line: 15cm or
more (Parallel wiring should be avoided.)
Communication Distance :
Up to 2 kmwhen polyethylene insulated
PVC-sheathed cables (CEV cables) are
used.Communication distance varies
depending on type of cable used and wiring.
Load Capacitance: 0.22 µF or less
Load Inductance: 3.3 mH or less
Input Impedance Communicating Device:
10 kΩ or more at 2.4 kHz.
詳細資料