Dwyer德威尔 DH-002 DH-004 DH-006 DH-007 DH-008 压差控制器

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Service:Air and non-combustible, compatible gases.Wetted Materials:Consult factory.Housing Material:ABS plastic, UL approved 94 V-0.Accuracy:±0.5% at 77°F (25°C) including hysteresis and repeatability.Stability:< ±1% per year.Pressure Limits:Ranges ≤ 2.5 in w.c. = 2 psi; 5″: 5 psi; 10″: 5 psi; 25″: 5 psi; 50″: 5 psi, 100″: 9 psi.Temperature Limits:32 to 140°F (0 to 60°C).Compensated Temperature Limits:32 to 140°F (0 to 60°C).Thermal Effects:0.020%/°F (0.036/°C) from 77°F (25°C).Power Requirements:High voltage power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC. Low voltage power = 24 VDC ±20%.Power Consumption:Low voltage power = 24 VDC – 130 mA max;
High voltage power = 100 to 240 VAC, 132 to 240 VDC – 7VA max.Output Signal:4-20 mA DC into 900 Ω max.Zero & Span Adjustments:Accessible via menus.Response Time:250 ms.Display:4 digit LCD 0.4″ height. LED indicators for set point and alarm status.Electrical Connections:Screw terminals.Process Connections:Compression fitting for use with 1/8″ ID X 1/4″ OD tubing (3.175 mm ID x 6.35 mm OD). Optional barbed fitting for 3/16″ ID tubing.Enclosure Rating:Face designed to meet NEMA 4X (IP66).Mounting Orientation:Mount unit in horizontal plane.Size:1/8 DIN.Panel Cutout:1.772 x 3.620 in (45 x 92 mm).Weight:14.4 oz (408 g).Serial Communications:Modbus® RTU, RS485, 9600 Baud.Agency Approvals:CE, UL.
SWITCH SPECIFICATIONSSwitch Type:2 SPDT relays.Electrical Rating:8 amps at 240 VAC resistive.Set Point Adjustment:Adjustable via keypad on face.