Technical Datasheet Sentry Series Differential Pressure Switch Models: D01, D02 & D03 Key Features  SPDT & DPDT Switch Outputs  Aluminium Epoxy Coated Weatherproof Enclosure IP66/NEMA4X  ATEX / IECEx Intrinsically Safe option  316 Stainless Steel Wetted Parts as Standard.  Field Adjustable Set-points Against a Reference Scale  Pressure Ranges up to 10bar (160psi)  Maximum Working Pressure up to 250bar (3500psi) Product applications The Sentry Series is suitable for a wide range of applications in:  Safety Vented Design as Standard Process plants  Suitable for use in SIL 2 safety related systems The choice of models available Series Overview The Sentry Series offers exceptional performance and high build quality in a simple, safe and cost -effective package.  Performance is assured by repackaging Delta’s well proven sensor technologies in a new, simple, one -piece enclosure.  Commissioning is made simple by the inclusion of a hinged lid that is held in place by a single captive screw.  Safety is maintained by a vent that prevents the enclosure becoming pressurized in the event of a sensor being damaged.  Cost is minimised through the selection of common standard options although, as with all Delta products, a variety of optional extras are available to tailor the product to specific needs. ensures that the Sentry Series is suitable for use in: General purpose applications Zone 0 Hazardous Areas SIL 2 safety related systems Delta Controls’ offers fast, efficient and knowledgeable support when and where you need it. Please visit our web site at www.delta-controls.com to find your local support centre or call us on: +44 (0)1252 729 140 Sentry Series Other products in the series include:  Pressure Switches: Mo

How to order Switches can be configured by selecting codes representing the desired features from the tables that follow. The chart below, describes how the model code is built up. For assistance in configuring a switch that best suits your needs, please contact your local sales office. Electrical Entry Table 3 Material of Wetted Part Table 4 Process Connection Table 7 Options & Treatments Table 8 Special Engineering Table 9 NOTE: Options shaded in the following tables are the most common options and are available on the quickest lead-times and at the lowest cost. NOTE: Only the most common options...

WEATHERPROOF ENCLOSURE General Purpose The basic enclosure is die-cast in aluminium, epoxy painted, with weather protection not less than NEMA type 4X, IP66. Intrinsic Safety: Ex ia As per General Purpose enclosure above but ATEX and IECEx approved for use in Zone 0 hazardous locations. II 1GD D02 For applications up to 10 bar (160 psi), maximum working pressure 110 bar (1600 psi). D03 For applications up to 10 bar (160 psi), maximum working pressure 250 bar (3500 psi). Electrical Entry Code Differential Pressure Diaphragm Operated Low Pressure Differential Pressure Diaphragm Operated Standard...

Setting Ranges The instruments will sustain, without loss of performance, a continuous forward over pressure equal to the maximum static pressure and/ or full Vacuum NOTE: For pressure difference switches maximum working pressure (Pmax) and maximum static/ line pressure mean the same. * Forward overpressure is limited to 500 mbar Maximum static/line pressure applied in the reverse direction (i.e., to low pressure connection with high pressure connection open to atmosphere) will be contained without failure. The diaphragm on ranges BD to EA (BY to EH) will however have been distorted, leading...

Process Connection Code Rc ¼ (¼ BSP Tr INT) to ISO 7/1: Direct ¼ NPT F: Direct Options & Treatments Code Stainless steel permanently fixed tags Stainless steel wired on tag Last 4 digits of model code only used when special engineering is required. Applies when – no option is required and selection is made from special engineering (see Table 9) Special Engineering Code Please consult Delta sales engineering for special requirements Approvals EUROPEAN GLOBAL CERTIFICATION IECEx Certified Pressure Equipment Directive (PED) 97/23EC: This product has a process connection size <=DN25 and is therefore...

FRONT VIEW (REFER TO DRAWINGS BELOW) In the interest of development and improvement Delta Controls Ltd, reserves the right to amend, without notice, details contained in this publication. No legal liability will be accepted by Delta Controls Ltd for any errors, omissions or amendments. Delta Controls Limited Riverside Business Park, Dogflud Way, Farnham, Surrey GU9 7SS, UK.