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NEMA 4 Enclosure with Integral Mounting Bracket
677B系列差壓變送器設(shè)計用于測量壓力范圍低至0.1%，精度±0.4%。677B系列用于建筑能源管理系統(tǒng)，環(huán)境污染控制，烘箱增壓，實驗室和通風(fēng)柜控制，HVAC和VAV應(yīng)用。該變送器具有15個psid超壓，反極性保護(hù)和EMI/RFI保護(hù)。內(nèi)部調(diào)節(jié)允許使用非調(diào)節(jié)直流電源。NEMA 4外殼允許通用安裝位置和整體安裝標(biāo)簽簡化安裝。
校準(zhǔn)選項可在附件。
應(yīng)用及案例
● Building energy management
● Environmental pollution control
● Lab and fume hood control
● Variable air volume
產(chǎn)品特色
● NEMA 4 housing enables a range of use outdoor or indoor where water is present
● High accuracy at low pressure ranges provides exceptional measurement for insuring tight-control and minimizing costly out of specification conditions
● Use with unregulated DC power permits easy access to electrical supply reducing costly power conditioning and wiring
Service: Air And Non-Conductive, Non-Corrosive Gases.
Wetted Materials: 302 SS, Glass, Nickel, Silicone Rubber And Brass.
Accuracy: ±0.4% FS* At Room Temperature. *RSS Includes Non-Linearity, Hysteresis And Non-Repeatability.
Stability: ±1% FS/Yr.
Temperature Limits:
Operating And Compensated: 0 To 185°F (-18 To 85°C);
Storage: -65 To 220°F (-54 To 105°C).
Pressure Limit: 15 Psi (100 KPa).
Thermal Effects: (Includes Zero And Span)<0.028% FS/°F, 0 To 185°F (-18 To 85°C).
Power Requirements: 16 To 32 VDC.
Output: 4 To 20 MA DC, 2-Wire.
Zero And Span Adjustments: Internally Accessible Potentiometers, Noninteractive.
Response Time: Approximately 10 Ms.
Max. Loop Resistance: DC: 0 To 800 Ohms.
Process Connection: 3/16" OD Barbed Brass Pressure Fitting.
Enclosure Rating: NEMA 4 (IP65).
Weight: 11.5 Oz (330 G).
Agency Approval: CE.
附件:
NISTCAL-PT1 - NIST Traceable Calibration Certificate For Pressure Transmitters.
A-302F-A - 303SS Static Pressure Tip With Mounting Flange, 4" Hook Style. For 3/16" ID Rubber Or Plastic Tubing, Includes Mounting Screws.
A-489 - 4" 303 SS Straight Static Pressure Tip With Flange.
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