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NEMA 4 Enclosure with Integral Mounting Bracket
677B系列差压变送器设计用于测量压力范围低至0.1%，精度±0.4%。677B系列用于建筑能源管理系统，环境污染控制，烘箱增压，实验室和通风柜控制，HVAC和VAV应用。该变送器具有15个psid超压，反极性保护和EMI/RFI保护。内部调节允许使用非调节直流电源。NEMA 4外壳允许通用安装位置和整体安装标签简化安装。
校准选项可在附件。
应用及案例
• Building energy management
• Environmental pollution control
• Lab and fume hood control
• Variable air volume
产品特色
• 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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