# Pressure switch, heavy-duty version — PSM-550

> For superior industrial applications

- Catalog code: psm_550
- Model: PSM-550
- Category: Pressure measurement › Pressure switches
- Product page: https://avigan.com.ua/wika/en/products/psm_550
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

The PSM-550 is used in industrial control, monitoring and alarm applications. The switch point can be be specified by the customer on site. The instrument ...

## Applications

- Pumps
- Lubrication systems
- Hydraulic systems
- Autoclaves

## Special features

- Non-repeatability ≤ 1 %
- Setting ranges for vacuum, +/- and gauge pressure

## Specifications

| Parameter | Value |
|---|---|
| model | PSM-550 |
| product family | PSM |
| short description | Heavy-duty pressure switch for industrial applications with adjustable switch differential, suitable for non-corrosive media like oil, water, and air. |
| subcategory | Pressure switch |
| certifications | RoHS; CE; Low Voltage Directive |
| ambient temp | -40 … 70 °C |
| ip rating | IP67 |
| weight kg | 1.2 |
| languages in datasheet | en |
| pressure ranges | 0 … 300 mbar; 0.1 … 1.1 bar; 0.2 … 3 bar; 0.2 … 6 bar; 1 … 10 bar; 2 … 17 bar; 4 … 17 bar; 10 … 30 bar; -1 … 0 bar; -0.8 … 5 bar |
| accuracy class | ≤ 1 % of span |
| accuracy standard | BS 6134 |
| process connections | G ⅜ B; G⅜B; G 3/8 B |
| wetted parts material | Stainless steel 1.4401; Free cutting steel EN1A, tin-plated; Copper alloy CuSn6; NBR; Bellow, copper alloy CuSn6; Copper alloy; Bellow, stainless steel 1.4401; Diaphragm, NBR |
| sealing material | NBR |
| process temp | -20 … 170 °C |
| electrical connection | Cable gland ½ NPT |
| switching function | Adjustable switch differential (hysteresis) |
| switching contacts | 1 |

## Datasheet tables

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|
| Unit | Setting range 1) | Permissible switch point on rising pressure | Permissible switch point on falling pressure | Adjustable switch differential 2) | Max. working pressure depending on measuring element |  |  |
|  |  |  |  |  | Bellow, copper alloy | Bellow, stainless steel | Diaphragm, NBR |
| mbar | 0 ... 300 | 10 ... 300 | 0 ... 250 | 10 ... 50 | - | - | 500 |
| bar | 0.1 ... 1.1 | 0.17 ... 1.1 | 0.1 ... 0.94 | 0.07 ... 0.16 | 7 | 7 | - |
|  | 0.2 ... 3 | 0.32 ... 3 | 0.2 ... 2.25 | 0.12 ... 0.75 | 7 | 7 | - |
|  | 0.2 ... 6 | 0.45 ... 6 | 0.2 ... 4.8 | 0.25 ... 1.2 | 15 | 25 | - |
|  | 1 ... 10 | 1.3 ... 10 | 1 ... 8.7 | 0.3 ... 1.3 | 16 | 25 | - |
|  | 2 ... 17 | 2.3 ... 17 | 2 ... 15 | 0.3 ... 2 | - | 25 | - |
|  | 4 ... 17 | 5.2 ... 17 | 4 ... 13 | 1.2 ... 4 | 25 | 25 | - |
|  | 10 ... 30 | 11 ... 30 | 10 ... 26 | 1 ... 4 | 45 | 45 | - |
|  | -1 ... 0 | -0.91 ... 0 | -1 ... -0.4 | 0.09 ... 0.4 | 7 | 7 | - |
|  | -0.8 ...+5 | -0.3 ...+5 | -0.8 ...+3 | 0.5 ... 2 | 15 | 25 | - |

| Current consumption 4) | Voltage | Current |
|---|---|---|
| Resistive load AC-1 | AC 230V | 10 A |
| Inductive load AC-15 | AC 230V | 4 A |

| Process connection per | Thread size |
|---|---|
| ISO 228-1 | G⅜B |

| Logo | Description | Country |
|---|---|---|
|  | EU declaration of conformity | European Union |

## Documents

- [ds_pv3503_en_co_0426bd](https://avigan.com.ua/wika/docs/wika/ds_pv3503_en_co.pdf) — PDF, 607 KB, en

## Configurator

This product has an interactive configurator on its product page.

```
PSM-550- -1-GC -Z
```