品牌：dwyer
產品描述：
量程可低至0.5英寸水柱，耐靜壓500psi

631B系列 液用差壓變送器能精確地監測空氣，兼容的液體或氣體的差壓。輸出標準的兩線制回路的4-20mA信號。前面板帶數字按鍵，能夠容易校準零點和量程。631系列變送器的防護級別為NEMA 4X （IP66），結構牢固，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.