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Riels Instruments
DBL Differential pressure for air Riels® Instruments

DBL Differential pressure for air Riels® Instruments

Product catalog summary

Overview:
This document provides technical specifications and applications for differential pressure switches designed by Riels Instruments Srl. These switches are used for controlling differential pressure in air or non-aggressive and non-inflammable gases, with alarm activation at pre-set values.

Function:
The switches are suitable for use in air conditioning and ventilation systems, particularly in environments with high pollution levels. They are used for monitoring filters, ensuring correct fan operation, monitoring low and overpressure, and deactivating electrical heaters when air is absent.

Technical Specifications:

Contact Type: Microswitch with SPDT contacts according to EN 1854 (EN 60730).
Switch Capacity: 1.5 (0.4) A, 250 Vac.
Working Temperature: -20 to +85°C, 10 to 90% relative humidity (non-condensing).
Diaphragm Material: Silicone (LSR).
Storage Conditions: -40 to +85°C, less than 90% relative humidity.
Housing Material: PS with IP54 protection, class II.
Dimensions: Maximum size Ø 118 x h 57.5 mm.
Weight: 180 to 210 g.

Models and Ranges:

DBL-205A: 0.3 to 4.0 mbar (30 to 400 Pa).
DBL-205B: 0.5 to 5.0 mbar (50 to 500 Pa).
DBL-205C: 0.2 to 3.0 mbar (20 to 300 Pa).
DBL-205D: 2 to 10 mbar (200 to 1000 Pa).
DBL-205E: 5 to 25 mbar (500 to 2500 Pa).

Accessories:

DBZ-06: Connection set with 2 PVC duct connectors, 2 m flexible PVC pipe, and 4 screws.
DBZ-14A/B: Set with mounting bracket and screws.

Catalog excerpts

DBL Differential pressure for air Riels® Instruments-1

DIFFERENTIAL PRESSURE SWITCHES Differential pressure for air or non-aggressive and non-inflammable gas control Function: Differential pressure for air or non aggressive and non inflammable gases control. Alarm activation at a pre-set value. Applications: Well-suited in domestic, commercial and industrial strong polluted areas in air conditioning and ventilating systems for: - filter monitoring; - correct fan operating control; - low pressure and overpressure monitoring; - deactivating of electrical heaters during air missing. Note Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments Connector P1 of higher pressure or lower vacuum. Connector P2 of lower pressure or higher vacuum. Connector Ø 6.0 mm for hose PVC 5 x 8 mm. RANGE mbar DIFFERENTIAL mbar 0.3...4.0 (30...400 Pa) 0.15 ± 15% 0.5...5.0 (50...500 Pa) 0.2 ± 15% 0.2...3.0 (20...300 Pa) 0.1 ± 15% 2...10 (200...1000 Pa) 1.0 ± 15% 5...25 (500...2500 Pa) 1.5 ± 15% DBZ-06 - Connection set with 2 PVC duct connectors, 2 m flexible PVC pipe and 4 screws DBZ-14A - Set with mounting bracket and screws DBZ-14B - Set with mounting bracket and screws Technical data Wiring diagram Contact: according to EN 1854 (EN 60730) microswitch with SPDT contacts Switch capacity: 1.5 (0.4) A, 250 Vac Differential mBar: fixed (see schedule) Working temperature: -20...+85°C 10...90% r.h. (without condensing) Diaphragm: silicone (LSR) Storage: -40...+85 ºC < 90% r.h. Housing: PS Protection: IP54, class II Max size Ø 118 x h 57,5 mm Weight: 180…210 g The contact 2 - 3 closes and the contact 1 - 3 opens when the differential pressure rises (fig. 1).

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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