631B系列 液用差壓變送器能精確地監(jiān)測空氣，兼容的液體或氣體的差壓。輸出標(biāo)準(zhǔn)的兩線制回路的4-20mA信號。前面板帶數(shù)字按鍵，能夠容易校準(zhǔn)零點和量程。631系列變送器的防護(hù)級別為NEMA 4X （IP66），結(jié)構(gòu)牢固，耐壓500psi，并能測量差壓到0.5英寸水柱。
Service: Compatible Gases & Liquids.
Wetted Materials: Brass, Silicone, 300 SS.
Accuracy: Transmitter Output: ±2% F.S. (Includes Linearity, Hysteresis And Repeatability). Gage: ±3% Of Full Scale At 70°F (21.1°C).
Stability: ±1% F.S./Yr.
Temperature Limits: 20 To 120°F. (-6.67 To 48.9°C).
Pressure Limits: -20" Hg To 500 Psig (0.677 To 34.4 Bar).
Thermal Effect: 0.025%/°F (0.045%/°C) Includes Zero & Span.
Power Requirements: 10-35 VDC.
Output Signal: 4 To 20 MA.
Loop Resistance: 0-1250 Ohms Maximum.
Electrical Connections: M-12 Circular 4 Pin Connector.
Process Connections: 1/4" Female NPT High And Low Pressure Taps, Duplicated - One Pair Top For Air And Gas, And One Pair Bottom For Liquids.
Enclosure Rating: Designed To Meet NEMA 4X (IP66).
Mounting Orientation: Diaphragm In Vertical Position. Consult Factory For Other Position Orientations.
Weight: 8 Lb 4 Oz (3.74 Kg).
Agency Approvals: CE.
