# Fischer DS21 Differential Pressure Switch Device

The **Fischer DS21 Differential Pressure Measuring and Switching Device** is engineered for precise monitoring of pressure differentials in industrial filtration HVAC and process automation systems. This robust instrument accurately detects pressure changes across filters or ducts triggering essential switching actions when predefined thresholds are met ensuring optimal system performance and safety.

Designed for demanding industrial environments the **Fischer DS21** provides reliable differential pressure measurement and control crucial for maintaining system efficiency and preventing operational issues. Its seamless integration into various control systems makes it an indispensable component for fluid and gas process lines automation panels and other critical applications requiring accurate pressure oversight.

-   **Precise differential pressure measurement** for filters ducts and process lines.
-   Integrated switch activation for automatic alerts or shutdowns at preset thresholds.
-   **Durable industrial-grade construction** built for continuous operation.
-   Easy integration into process control HVAC and industrial automation setups.
-   Enhances system safety performance and maintenance scheduling.

## Specifications:

-   Product Type Differential Pressure Measuring & Switching Device
-   Model Part Number DS21
-   Brand Fischer
-   Function Measure differential pressure provide switching output
-   Application Industrial filtration HVAC process lines automation control
-   Construction Industrial-grade durable precise

Trust the **Fischer DS21** for dependable pressure monitoring and control in your critical industrial automation applications. Discover its reliability and performance for your operations today.

## Details

- **Price:** 999.0 USD
- **Vendor:** Fischer
- **Type:** Industrial Automation > Measurement & Control > Pressure Sensors
- **Tags:** automation control, differential pressure switch, fischer ds21, fischer sensor, hvac sensor, industrial automation, pressure measuring device, process control

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- Fischer DS21 Differential Pressure Switch Device-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/fischer-ds21-differential-pressure-switch)
> Updated: 2026-09-19