Liquid level pressure sensor

Protective shell design, can be equipped with on-site display module.

·Strong interference ability, in line with the national electromagnetic compatibility EMC level three standards. To

·This product is composed of circuit boards, sensors and other important components.

It is suitable for the measurement of process control pressure in the industrial field.

Install

1. Ensure that the transmitter is installed perpendicular to the ground. During installation, use a wrench to tighten the transmitter from the hexagonal nut at the bottom of the transmitter to avoid directly rotating the upper part of the transmitter; 2. When the measurement changes quickly When the pressure is high, a pressure buffer device should be installed at the connection outlet of the transmitter and the measured medium to avoid the instantaneous pulse high pressure directly impacting the measuring element of the transmitter, causing the transmitter to fail.

wiring

Two-wire current output wiring diagram (SERE-VP305**)

  1: Power supply is positive 2: Current output 3: Empty 4: Shielding ground

Three-wire current output wiring diagram (SERE-VP305 ***)

  1: Power supply is positive 2: Power supply is negative 3: Current output 4: Empty

Three-wire voltage output wiring diagram (SERE-VP305 ***)

1: Power supply is positive 2: Power supply is negative 3: Voltage output 4: Empty

Network output wiring diagram (SERE-VP305 ***)

1: Power supply positive 2: Power supply negative 3: RS485 A+ terminal (TX) 4: RS485 B- terminal (RX)

Please note that when installing the transmitter, the selected cable should not be lower than the protection level of the transmitter. At the same time, to ensure the IP65 protection level, a cable with a diameter of 6mm to 8mm should be selected. The cables should be connected correctly according to the wiring diagram. If shielded cables are used, connect the shielding layer to the grounding terminal in the shell and ensure reliable connection. At the same time, the ground terminal on the surface of the housing should be reliably connected to the earth.

safety instructions

During installation, ensure that the transmitter is tightly tightened before pressure measurement; before disassembly, disconnect the power supply and ensure that the valve of the measured medium is turned off to reduce the pressure to normal pressure before disassembly to avoid accidents caused by medium ejection. This product is not explosion-proof. Using it in explosion-proof areas may cause serious personal injury and material damage.

Precautions

When you receive the product, please check whether the packaging is intact, and check whether the transmitter model and class number are consistent with the product you purchased; 2. Confirm whether the power output voltage is correct; the positive and negative of the power supply are the same as the positive and negative of the product. Corresponding to the negative wiring; the highest pressure of the pressure source is within the range of the product; 3. Please keep the verification certificate and the certificate, and return it with the product when repairing.