Digital Pressure Sensor (CAS-R | DPS)

Product features and details.

Product Overview

Differential Pressure Sensor (CAS-R | DPS) provide air pressure monitoring for pressurisation and de-pressurisation Mechanical Smoke Ventilation Systems (MSVS), enabling rapid pressure control within the stair core to ensure designed pressure differentials are maintained.

They operate automatically and are designed to interface with the Sertus Addressable Smoke Control System and provide control of the fan speed via the Variable Speed Drive (VSD). This prevents over-pressures and under-pressures which can have the effect of excessive door opening forces, and doors slamming. They are often used in MSVS that require the ability to provide a variable rate of extraction, to reflect the different door opening and closing events that occur during a fire.

The CAS-R | DPS uses a solid-state sensor and is simply connected to the Addressable Control Panel (ACP) Master Communication channel for reliable and accurate pressure control.

They may be installed directly to the ACP alone or with the CAS-R | RTS Remote Temperature Sensor as a combined addressable sensor system.

Key Features

0 –100 Pa measurement range
IP 65 housing
Four wire interface
Reliable solid-state sensor

Technical Data

Power Supply: 24Vdc ±10%
Power consumption: 1VA
DP resolution: 0 –100Pa: 0.1% fs
Pressure non-linearity: 0 –100Pa: <±1.5% fs
Overall accuracy: ±3% fs, 0 – 70°C
Long-term stability: 0 –100Pa: Max ±1.5% fs
Burst pressure: >5bar (72.5psi)
Sensitivity shift over temp: 0 –100Pa: Typ ±1% max ±1.5%, 5 – 55°C / Typ ±1.5% max ±2.25%,0 – 70°C
Pressure connections: 6mm ID tubing
Housing: Material: ABS (flame retardant type VO)
Dimensions: 116 x 106 x 52mm
Ambient: Temp: 0– 40°C
Protection: Snap shut lid: IP54 IP65 (see installation notes)

Size Guide