S S REGELTECHNIK PREMASREG DS2 Differential Pressure Switch Instruction Manual

: June 12, 2024
: S S REGELTECHNIK

Table of Contents

S S REGELTECHNIK PREMASREG DS2 Differential Pressure Switch
Product Information
Product Usage Instructions
Dimensional drawing
TECHNICAL DATA
Mounting and Installation
Accessories
Documents / Resources

S S REGELTECHNIK PREMASREG DS2 Differential Pressure Switch

Product Information

This product is a differential pressure switch for air equipped with a mounting ring and includes a connection set. It is designed for use in various applications where differential pressure needs to be monitored and controlled.

The product has the following technical specifications:

Switching capacity: 5 (0.8) A, 250 V AC; 4 (0.7) A, 30 V DC
Contact: Single-pole potential-free changeover contact, multi-layer contact, gold-plated (DDC compatible)
Pressure range: Adjustable from 20 to 300 Pa (0.2 to 3.0 mbar), 50 to 500 Pa (0.5 to 5.0 mbar), 100 to 1000 Pa (1.0 to 10.0 mbar), and 500 to 2000 Pa (5.0 to 20.0 mbar)
Housing: Made of stainless steel V2A (1.4301), weather- and sun-resistant, dimensions: 130 x 180 x 135 mm
The temperature of medium: Suitable for various temperature ranges
Membrane: High-quality membrane for accurate pressure measurement
Humidity: Operating humidity should be below 90% relative humidity and non-precipitating air
Electrical connection: Terminal screws with torsion protection, suitable for cable sizes from 0.14 to 1.5 mm2
Pressure connection: PG 11 cable gland with strain relief
Mounting: Includes a mounting ring for easy installation
Protection class: II (according to EN 60 730)
Protection type: IP 54 (according to EN 60529) with top cover
Standards: CE conformity, low-voltage directive 2014/35/EU

Product Usage Instructions

To use the differential pressure switch, follow these steps:

Mount the switch using the provided mounting ring. Refer to the mounting diagram in the user manual for proper installation.
Connect the pressure source to the switch using the included connection set. Ensure that the pressure connections are secure.
Adjust the desired pressure range using the inner adjustment mechanism of the switch. Refer to the inner adjustment diagram in the user manual for guidance.
Make sure that the electrical connections are properly secured using the provided terminal screws with torsion protection. Use appropriate cable sizes within the specified range.
Ensure that the switch is protected from weather and sunlight by installing it in a suitable location or using additional weather and sun protection measures.

For further details on installation, operation, and maintenance, please refer to the complete user manual provided with the product.

Operating Instructions, Mounting & Installation
Differential pressure switches for air, with mounting ring, including connection set

Dimensional drawing

The mechanical differential pressure switch ⁄ differential pressure monitor PREMASREG® DS-2 with 4-hole plastic base ring is used for monitoring above-atmospheric, differential and below-atmospheric pressures of clean air and other gaseous, non-aggressive non-combustible media in air ducts, air intake or exhaust devices, as a pressure difference detector or pressure monitor for flow detection at electric heating registers, for monitoring V-belts and filters, as air pressure deficiency protection, for monitoring fans and air dampers, or as a limit value controller. The switchpoint is adjusted using the internal precision scale.
These instruments are factory-calibrated. The differential pressure switch DS 2 is supplied including connection set ASD-06 (2 m connection hose, two pressure connection nipples, screws) and mounting ring DS -MR - K

TECHNICAL DATA

Mounting and Installation

TYPES OF MONITORING:

(A) B elow-atmospheric pressure:
P1 (+) is not connected but open against atmosphere
P2 (–) connected to inside of duct (B) Filter:
P1 (+) connected upstream of filter
P2 (–) connected downstream of filter (C) Ventilator:
P1 (+) connected downstream of ventilator
P2 (–) connected upstream of ventilator
Pressure connections at the pressure switch are marked with
P1 (+) for higher pressure and
P2 (–) for lower pressure.
Specifications regarding switching pressures relate to vertical mounting and it is recommended to install the connections downward.
In case of vertical mounting with pressure connections upward, the switch-on value increases by 0.2 mbar.

Connection P1 for

higher pressure or less below-atmospheric pressure.

Connection P2 for

lower pressure or more below-atmospheric pressure.

Electrical connections:

Contacts 1 – 2 break when pressure ⁄ differential
pressure rises to the preset value.
Simultaneously, contacts 1 – 3 close and can be used as signal contact

Conversion table for| pressure values:|
---|---|---
Unit =| bar| mbar| Pa| kPa| mH2O
1 Pa| 0.00001 bar| 0.01 mbar| 1 Pa| 0.001 kPa| 0.000101971 mH2O
1 kPa| 0.01 bar| 10 mbar| 1000 Pa| 1 kPa| 0.101971 mH2O
1 bar| 1 bar| 1000 mbar| 100000 Pa| 100 kPa| 10.1971 mH2O
1 mbar| 0.001 bar| 1 mbar| 100 Pa| 0.1 kPa| 0.0101971 mH2O
1 mH 2O| 0.0980665 bar| 98.0665 mbar| 9806.65 Pa| 9.80665 kPa| 1 mH2O

General notes

Our “General Terms and Conditions for Business“ together with the “General Conditions for the Supply of Products and Services of the Electrical and
Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions.

In addition, the following points are to be observed:

These instructions must be read before installation and putting in operation and all notes provided therein are to be regarded!
Devices must only be connected to safety extra-low voltage and under dead-voltage condition. To avoid damages and errors at the device (e.g. by voltage induction) shielded cables are to be used, laying parallel with current-carrying lines is to be avoided, and EMC directives are to be observed.
This device shall only be used for its intended purpose. Respective safety regulations issued by the VDE, the states, their control authorities, the TÜV and the local energy supply company must be observed. The purchaser has to adhere to the building and safety regulations and has to prevent perils of any kind.
No warranties or liabilities will be assumed for defects and damages arising from improper use of this device.
Consequential damages caused by a fault in this device are excluded from warranty or liability.
These devices must be installed and commissioned by authorised specialists.
The technical data and connecting conditions of the mounting and operating instructions delivered together with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our products.
In case of any modifications made by the user, all warranty claims are forfeited.
– This device must not be installed close to heat sources (e.g. radiators) or be exposed to their heat flow.
Direct sun irradiation or heat irradiation by similar sources (powerful lamps, halogen spotlights) must absolutely be avoided.
Operating this device close to other devices that do not comply with EMC directives may influence functionality.
This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury, or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.
Dimensions of housing or housing accessories may show slight tolerances on the specifications provided in these instructions.
Modifications of these records are not permitted.
In case of a complaint, only complete devices returned in original packing will be accepted.

Notes on commissioning:

This device was calibrated, adjusted, and tested under standardized conditions. When operating under deviating conditions, we recommend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.
Commissioning is mandatory and may only be performed by qualified personnel
These instructions must be read before installation and commissioning and all notes provided therein are to be regarded!

Accessories

Weather and sun protection hood (optional)

Dimensional drawing

Connection set

Connection nipple

Reprinting in full or in parts requires permission from S+S Regeltechnik GmbH. Subject to errors and technical changes. All statements and data herein represent our best knowledge at the date of publication. They are only meant to inform about our products and their application potential but do not imply any warranty as to certain product characteristics. Since the devices are used under a wide range of different conditions and loads beyond our control, their particular suitability must be verified by each customer and/or end user. Existing property rights must be observed. We warrant the faultless quality of our products as stated in our General Terms and Conditions.

S+S REGELTECHNIK GMBH
THURN-UND-TAXIS-STR. 22
90411 NÜRNBERG ⁄ GERMANY
FON +49 (0) 911 ⁄ 519 47- 0
mail@SplusS.de
www.SplusS.de

Documents / Resources

| S S REGELTECHNIK PREMASREG DS2 Differential Pressure Switch [pdf] Instruction Manual
PREMASREG DS2 Differential Pressure Switch, PREMASREG DS2, Differential Pressure Switch, Pressure Switch
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