WWDP系列 液用差壓變送器-德威爾Dwyer
WWDP系列 液用差壓變送器雖然只有三種型號，但每種型號都有三十種可現(xiàn)場選擇的功能。WWDP系列能現(xiàn)場選擇單向量程或雙向正負(fù)量程，可選0-5, 1-5, 0-10VDC, 和4-20 mA的輸出信號，還帶有自動校準(zhǔn)零點的功能。現(xiàn)場可選擇高低壓壓力接口的功能對于現(xiàn)場安裝方向錯誤可無須重新安裝。可選的LCD顯示用于現(xiàn)場指示并同時輸出信號。鑄鋁外殼的防護(hù)等級為NEMA 4 (IP66)。這些功能使得WWDP差壓變送器廣泛地用于監(jiān)測氣體，液體流量，過濾器壓力降，有壓容器中的液位，等等能量管理系統(tǒng)中或過程控制系統(tǒng)中。
Service: Gases or liquids compatible with 17-4 PH stainless steel.
Accuracy: All pressure ranges have ±1% full scale accuracy except the lowest selectable range of each unit is ±2% full scale.
Stability: ±0.5% per year.
Temperature Limits: Compensated temperature range: 32 to 130°F (0 to 54°C); Operating temperature range: -4 to 185°F (-20 to 85°C).
Pressure Limits: Max working pressure: WWDP-1: 50 psi; WWDP-2: 100 psi; WWDP-3: 250 psi; Proof pressure: 2.2X of full scale; Burst pressure: 40X of full scale.
Thermal Effect: 2% FS/100°F (50°C) includes zero and span.
Power Requirements: 12 to 30 VDC/18 to 28 VAC (Reverse Excitation Protected). NOTE: 4 to 20 mA output cannot be powered with AC voltage.
Output Signal: Selectable 0 to 5, 0 to 10 and 1 tp 5 VDC; 4 to 20 mA.
Zero & Span: Digital "re" zero button (should be used when changing ranges). Span can be adjusted by changing between field selectable ranges.
Response Time: 1 to 5 sec (selectable).
Loop Resistance: 1000 Ω.
Current Consumption: VDC power: 0 to 5, 1 to 5 VDC output 4 mA (typ); 0 to 10 VDC output 5 mA (typ); 4 to 20 mA output 20 mA max. Current consumption will equal the transmitter output in current mode. VAC power: 0 to 5, 1 to 5, 0 to 10 VDC output 40 mA (typ).
Electrical Connections: 1/2" conduit.
Process Connections: 1/8" female NPT internal.
Enclosure Rating: Designed to meet NEMA 4 (IP66).
Mounting Orientation: Vertical; mount the pressure ports down (keeps debris from building up inside the pressure port).
Weight: 1.5 lb (680.4 g).
Agency Approvals: CE.
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