| The controller uses a diaphragm sensor, which is suitable for neutral gases such as air and gas and liquid media such as lubricants and light fuel oil. The differential pressure setting of the controller is adjustable, and the adjustment range is 70 ～ 300Kpa. |
Features: Subminiature design
Single pole double throw micro switch action process:
Terminal 1-3: Turn on when the pressure rises to the upper switching value.
Terminal 1-2: Disconnect when the pressure rises to the upper switching value.
◇ Main technical performance:
Switching element: OMRON micro switch
Ambient temperature: -25 ～ 80 ℃
Medium temperature: 0 ～ 80 ℃
Enclosure protection class: IP65
Repeatability error: 2%
Anti-seismic performance: 40m / s 2
Contact capacity: AC 220V 3A 500W (resistive)
Installation position: H (high-pressure cavity) interface vertically downwards
(Allow 15o tilt)
| ◇ Specifications: |
| 切换差不可调 ● Switching difference is not adjustable |
Differential pressure setpoint adjustment range
） (Kpa )
Switching difference is not greater than
Maximum allowable working pressure
Pressure sensor material
Interface female thread
70 ... 170
M14 × 1.5
130 ... 300
| ◇ Adjustment of set value: |
| Enter the high voltage source at the high voltage (H) interface and the low voltage source at the low voltage (L) interface. |
：选用差压设定值调节范围为70 ～ 170 Kpa的控制器，要求差压上升至120K pa （上切换值）发出报警信号，其操作步骤如下： [Example] : Select the controller with the adjustment range of the differential pressure set value between 70 and 170 Kpa , and require the differential pressure to rise to 120K pa (up switch value) to issue an alarm signal. The operation steps are as follows:
1. Screw the high voltage interface of the controller into the pressure calibration table, and connect the switch wiring base to the signal source.
，此值可从标准压力计中读出。 2. Increase the pressure to 120K pa . This value can be read from the standard pressure gauge.
附近切换。 3. Use M4 hex socket wrench to adjust the screws in the low-pressure interface (clockwise rotation, the differential pressure setting value increases, counterclockwise rotation, the differential pressure setting value decreases), and switch around 120K pa .
上下来回变化，检验开关触点的上切换值是否是120K pa ，此时下切换值应是120K pa减去切换差（30K pa左右），等于90K pa左右。 4. Change the pressure value so that the pressure changes up and down at 120K pa . Check whether the upper switching value of the switch contact is 120K pa . At this time, the lower switching value should be 120K pa minus the switching difference (about 30K pa ), which equals 90K pa. about.
（若用户受调试设备的限制，此步骤可免做）。 5. Input the high and low voltage signals at the high and low pressure ends simultaneously and observe whether the differential pressure is 1205 pa (if the user is restricted by the debugging equipment, this step can be omitted).
| 单位：mm ◇ Dimensions: Unit: mm |
| ◇ Selection and installation: |
通断电流不能大于额定值（当触点动作频繁时，最好不超过额定值的60%）。 ● The on-off current cannot be greater than the rated value (when the contact moves frequently, it is better not to exceed 60% of the rated value). .
安装在室外时，应给予足够的防护，以免受腐蚀性气体、剧烈变化的环境温度、太阳辐射、水渗入等。 ● When installed outdoors, adequate protection should be given to prevent corrosive gases, drastically changing ambient temperature, solar radiation, and water infiltration.
对有压力峰值及脉冲压力的介质，可安装阻尼器以消除脉冲干扰。 ● For media with pressure peaks and pulse pressure, a damper can be installed to eliminate pulse interference.
安装压力接口时，应夹持控制器接口的外六角接口处，防止控制器壳体与高、低接头发生松动，影响控制器性能。 ● When installing the pressure interface, the outer hexagonal interface of the controller interface should be clamped to prevent the controller housing from loosening with the high and low joints, affecting the performance of the controller.
高低压接口不能接反，否则控制器不动作。 ● The high and low voltage interfaces cannot be reversed, otherwise the controller will not work.