GENERAL CATALOGUE 2026.01

Modular units B series Pressure gauges and pressure switches, 1/4" ÷ 1/2"

Standard dimensions

29

Typo: BZ303 - BZ304

30

22

12,6

28

3 32

4 30

M8 connector pinout

Ø6

White (OUT2)

Black (OUT1)

150

M8

Brown (+)

Blue (-)

Circuit schemes

Type: BZ303

Type: BZ304

DC (+) Brown OUT1 (Black) OUT1 (White)

DC (+) Brown

R L

R L

OUT1 (Black) OUT1 (White) DC (-) Blue

DC 12-24V

DC 12-24V

R L

R L

Main circuit

Main circuit

DC (-) Blue

Circuit PNP

Circuit NPN

Function

Pressure units set by user

Sub-display

Main display Lock indicator Output 1 indicator Button ▲

3 - AIR TREATMENT

Button ▼ Output 2 indicator Sub-display setting mode

Setting button

Mounting

fig.1

fig.2

fig.3

fig.4

To mount BZ303 or BZ304 digital pressure switch, place the pressure switch base on the modular unit body and secure it with the supplied screws (fig.1). Place the digital pressure switch body on the adapter (fig.2) and secure it with the supplied clip, inserting it into the appropriate holes on the left side of the base (fig.3). Arrange the cable as needed (fig.4) and connect it to the power supply (M8 connector).

3.4.453