Dwyer Capsu-Photohelic® differential pressure Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the timeproven Magnehelic® gage design. The Dwyer differential pressure switche employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig (34 bar). Optional cast brass case is available for water or water based liquids.
Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust setpoint indicators are controlled by knobs located on the gage face. Individual setpoint deadband is one pointer width — less than 1% of full scale. Setpoints can be interlocked to provide variable deadband — ideal for control of pumps, etc.
SPECIFICATIONS
GAGE SPECIFICATIONS
Service: Compatible gases and liquids. Brass case option required for water based liquids.
Wetted Materials: Consultfactory.
Accuracy: ±3% of full scale at 70°F (21.1°C). ±2% on 43000S
models; ±4% on 43215, 43220 and 43500.
Pressure Limits: -20 Hg to 500 psig (-0.677 to 34.5 bar).
Temperature Limits: 20 to 120°F (-6.67 to 48.9°C). Low temperature option available.
Process Connections: 1/4˝ female NPT.
Size: 4˝ (101.6 mm) dial face, 5˝ (127 mm) O.D. x 9-3/16˝ (233.36 mm).
Weight: 5 lb, 8 oz (2.49 kg).Brass 11 lb, 2 oz (5.05 kg).
SWITCH SPECIFICATIONS
Switch Type: Each setpoint has 2 form C relays (DPDT).
Repeatability: ±1% of full scale.
Electrical Rating: 10A @ 120 VAC, 6A @ 240 VAC, 60 Hz res.10A @ 28 VDC.
Electrical Connections: Screw terminals.
Power Requirements: 120 VAC,50/60 Hz; 240 VAC & 24 VAC power optional.
Mounting Orientation:Diaphragm in vertical position.Consult factory for other position orientations.
Set Point Adjustment:Adjustable knobs on face.

DWYER 仪器仪表43000系列Capsu-Photohelic差压表/差压开关，组合多功能、高重复性差压开关和高精度差压表于一体。43000差压表/开关采用了经时间考验的Magnehelic的设计，Capsu-Photohelic封装传感元件，能够测量液体及气体的压力达到500psig（34bar），当测量水或水基液体时还可选用铸铜外壳。两个光电管带动双刀双掷继电器用于高/低限制控制，在仪表前部的旋钮很容易调整设定点。每个设定点的死区只有一个指针宽度——小于满量程的1%。两个设定点可以连锁来预防死区的变化。
技术指标
差压表技术指标
介质：兼容性气体和液体。使用水基液体可选择黄铜外壳
材质：请向厂家咨询
精度：±3%满量程在21.1℃
压力范围：-0.677至34.5bar
温度范围：-6.67至48.9℃
过程连接：1/4″NPT内螺纹
尺寸：表盘4″（101.6mm），5″（127mm）外径×9-3/16″（233.36mm）
重量：2.49kg；黄铜型号：5.05kg
开关技术指标
开关类型：每个设定点具有2个C型继电器（双刀双掷）
重复性：满量程的±1%
电气指标：10A @ 120VAC，6A @ 240VAC，10A @ 28 VDC。
电气连接：旋紧接线端
电源：120VAC，50/60HZ；可选240VAC和24VAC电源
安装定位：膜片用于垂直方向
设定点调整：表面可调旋钮
机构认证：CE