3000MR/3000MRS系列 Photohelic 微差壓開關(guān)/表-德威爾Dwyer
3000MR 3000MRS Photohelic® 開關(guān)/表把高精度、高重復(fù)性能的差壓開關(guān)與大表盤便于讀數(shù)的指針式差壓表結(jié)合到一起，采用了可靠耐用的的Magnehelic®設(shè)計理念。可通過儀表面板的旋鈕設(shè)置壓力開關(guān)設(shè)定點，壓力表讀數(shù)不受開關(guān)的影響，即使失電也能準(zhǔn)確讀數(shù)。采用了固態(tài)技術(shù)大大減小了產(chǎn)品的體積和重量�？稍�13/16″(122mm)安裝孔中被嵌入安裝或用帶有的附件進(jìn)行表面安裝。3000MR型采用了鍍金觸頭開關(guān)，特別適用于小功率無源電路。對于開關(guān)動作頻繁的應(yīng)用場合，可選擇帶單刀單擲（常開）固態(tài)開關(guān)的3000MRS。有高低位開關(guān)，帶18英寸（45cm）長的電纜用于電氣連接。
3000MR 3000MRS Photohelic® 差壓表的精度是±2%， 開關(guān)的重復(fù)精度是±1%，回差小于1%，比指針的寬度還窄。它可用于空氣或其它不可燃，無腐蝕的氣體，耐壓到25psig(1.725bar)。有耐壓35 psig(2.42bar)或耐壓80 psig (5.51bar)的特別結(jié)構(gòu)選項。
包括附件：安裝環(huán)，卡環(huán)，18" (45 cm)電纜，兩個3/16"軟管到1/8"NPT轉(zhuǎn)換接頭，2個1/8"NPT堵頭，4個6-32 x 1-1/4"盤裝用螺釘，3個6-32 x 5/16"表面安裝用螺釘。
GAGE SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±2% of FS (3000-0 ±3% of FS). (3000-00 ±4% of FS).
Pressure Limit: -20" Hg. to 25 psig (-0.677 bar to 1.72 bar). MP option: 35 psig (2.41 bar), HP option: 80 psig (5.52 bar).
Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).
Process Connections: 1/8" female NPT (duplicated side and back).
Size: 4" (101.6 mm) dial face, 5" (127 mm) OD x 3-1/8" (79.38 mm).
SWITCH SPECIFICATIONS 3000MR
Switch Type: Each setpoint has 1 form C relays (SPDT).
Relay Contacts: (Resistive load) 1 form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC. Gold over clad silver - suitable for dry circuits.
Electrical Connections: 18" (46 cm) cable assembly with 8 conductors. Optional lengths to 100' (30.5 m).
Power Requirements: 24 VDC, regulated ±10%.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Adjustable knobs on face.
SWITCH SPECIFICATIONS 3000MRS
Switch Type: Each setpoint has a solid state relay.
Switching Voltage: 20-280 VAC (47-63 Hz).
Switching Current: 1.0 amp (AC) max., 0.01 mA (AC) min., (2) SPST NO.
Electrical Connections: 18" (46 cm) cable assembly with 6 conductors, optional lengths to 100' (30.5 m).
Power Requirements: 24 VDC, regulated ±10%.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Adjustable knobs on face.
Agency Approvals: CE.
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