Dwyer 液用差压变送器 631B系列

量程可低至0.5英寸水柱，耐静压500psi

631B系列液用差压变送器能精确地监测空气，兼容的液体或气体的差压。输出标准的两线制回路的4-20mA信号。前面板带数字按键，能够容易校准零点和量程。631系列变送器的防护级别为NEMA 4X （IP66），结构牢固，耐压500psi，并能测量差压到0.5英寸水柱。

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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.