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OPERATING AND INSTALLATION INSTRUCTIONS
Conductivity Operated Level Control System
Having SIRA Approved Intrinsically Safe Electrode Circuits
Conforming to the ATEX Directive 94/9/EC
Controller type P7/I.S. Certificate No SIRA03ATEX2160X
Electrode Holders Certificate No SIRA03ATEX2159X
Conductivity Operated Level Control System
Certificate No Ex03E2161
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Related Manuals for Hawker P7/I.S.
Summary of Contents for Hawker P7/I.S.
- Page 1 OPERATING AND INSTALLATION INSTRUCTIONS Conductivity Operated Level Control System Having SIRA Approved Intrinsically Safe Electrode Circuits Conforming to the ATEX Directive 94/9/EC Controller type P7/I.S. Certificate No SIRA03ATEX2160X Electrode Holders Certificate No SIRA03ATEX2159X Conductivity Operated Level Control System Certificate No Ex03E2161...
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Page 2: Table Of Contents
Contents Page System Overview Operating Principle General Description and Installation P7/IS Controller Essential information 4.1.1 Identification 4.1.2 General information 4.1.2.1 Special Conditions for Safe Use 4.1.3 Hazardous and safe area parameters 4.1.4 Electrical connection & housing Setting up the P7/IS Controller 4.2.1 Single electrode applications 4.2.2 Dual electrode applications 4.2.3 Basic controller testing... -
Page 3: System Overview
The user should read this manual prior to installation or commissioning. SYSTEM OVERVIEW When used with Hawker electrodes, the P7/I.S. level controller forms an INTRINSICALLY SAFE Level Alarm or Control System. The controller is situated in the Safe Area and the electrodes in the Hazardous Area. -
Page 4: General Description And Installation
Standards. The P7/I.S. controller must be installed in the ‘safe’ area in a control panel or other protective housing. To comply with the certification, only approved Hawker level sensing electrode holders bearing the approved label, may be used in the ‘hazardous’... - Page 5 Supporting Standards used for certification. The electrical installation of the controller, electrode and electrode wiring must also comply - “Hawker Electronics” drawing 2920 BS EN 50039:1980 / BS EN 60079-14 1997 EN 50014:1997(A1-A2) EN 50020:1995 EN 50284:1997 And any other current relevant standards.
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Page 6: P7/Is Controller
P7/IS CONTROLLER Essential information 4.1.1 Identification Controller Type P7/IS - Certificate Sira 03ATEX2160X The certification marking is as follows Example label contains all relevant details for the particular model. The parameters will vary between models. 4.1.2 General information The equipment must only be installed in a non-hazardous (safe) area. The equipment is only certified for use in ambient temperatures in the range -20 to +40 C and should not be used outside this range. -
Page 7: Special Conditions For Safe Use
The “Hazardous Area” connections are on the top consisting of P1, P2 & G terminals; these go to the electrodes in the vessel. Various Hawker data sheets are available giving P1, P2 & G configurations for pumping in/out and alarms etc. they can also be found on the company web site. -
Page 8: Setting Up The P7/Is Controller
Certified drawing 2920 included in this manual gives specific information for installation and additional requirements for multiple system configurations, which should be strictly adhered to. The housing can be mounted either by means of screws passed through two holes to DIN 46 121 and DIN 43 660 or by a snap fastener for fitting to DIN 46 277 and DIN EN50 022 assembly rails. -
Page 9: Single Electrode Applications
Turning the sensitivity control anticlockwise decreases the sensitivity, giving optimum control and switching differential over dirtier liquids such as sewage, this is useful where ragging can be a problem. If the liquid is too high a resistance (not very conductive) the unit may not switch even when the control is turned fully clockwise. -
Page 10: Dual Electrode Applications
4.2.2 Dual electrode applications P1, P2 & G Instruction Relay Condition Fill the vessel until liquid is in Contact with the P2 electrode. Turn sensitivity control to ‘max’. energised de-energised Using a piece of wire, place a Momentary short circuit between de-energises energises P1 &... - Page 11 Remove the P1 & G short, the relay should remain de-energised. Remove the P2 & G short, the relay should energise. Testing the volt free contacts: - Ensure the supply to the volt free contacts has been switched OFF and remove the wires from the terminal block.
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Page 12: Technical Specification
P7/IS Controller technical specifications Taken@25°C, specifications subject to alteration. Supply Supply voltage 240Vac/110Vac/24Vac ±10% factory set Note- the 240V unit will operate at 240V +10% but its Intrinsically safe certification is valid to 250V max (240V+4%). Installation Cat Overvoltage Cat II Supply frequency 50/60 Hz Consumption... -
Page 13: Electrode Holders
ELECTRODE HOLDERS The equipment has not been assessed as a safety-related device (as referred to by Directive 94/9/EC Annex II, clause 1.5). Installation of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice. Repair of this equipment shall only be carried out by the manufacturer or in accordance with the applicable code of practice. -
Page 14: Certification Markings
The certification of this equipment relies on the following materials used in its construction, and the special conditions for safe use are observed, section 5.1.4. For Types Cat 1 Hawker models 1G/0 HPEXXXX/IS only - Enclosure: HPE5 – UPVC. HPE7, HPE13, HPE14/X, HPE22 – Polypropylene. -
Page 15: Special Conditions For Safe Use
5.1.4 Special conditions for safe use (denoted by an X after the certificate number) The Holder Type 1G/0 HPE5/IS shall not be used with an input current, Ιi, that is in excess of 100 mA. The equipment cannot be considered capable of withstanding 500 Vrms. a.c. voltage test to earth (a requirement of clause 6.4.12 of EN 50020:2002). -
Page 16: Cable Properties
maintained between the terminals if using multiholders to prevent them from touching one another. The collar is placed over the electrode and fixed using the Allen key provided; the terminating cable is then attached, or a screw is used for direct connection. electrode screw lock washer... -
Page 17: Cable Capacitance
Cable capacitance Example of calculating cable capacitance Normally it is the cable capacitance that will limit the length of the conductors. Using the same scenario as above 4 x P1 and 2 x P2, for capacitance we ignore the ‘G’ so are concerned with 6 cables. -
Page 18: System Information
µH/Ohm SYSTEM INFORMATION A “System” is defined when the P7/IS controller is used in conjunction with approved Hawker electrode holders and installed in line with the information in this section. A system certificate of conformity Sira Ex 03E2161 applies. See also drawing 2920 and Section 3 ‘General description... -
Page 19: Permissible Interfacing Cables
Up to ten controllers may be used within a system with up to three holders per controller connected i.e. one holder to each of the controller terminals ‘G’, ‘P1’ and ‘P2’. Multiple controller systems may employ a common ‘G’ holder with the controllers connected together via links between the controller ‘G’... -
Page 20: System Installation Drawing
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Page 21: Declarations Of Conformity
The product complies with parts of the European safety standards / other safety standards / technical specifications listed above. Hawker Electronics Ltd has an internal production control system that ensures compliance between the manufactured products and the technical documentation. 29-07-10 Signed……... - Page 22 Page 22 of 22...
- Page 23 Thank you for reading this data sheet. Please contact us for a quotation: Head Office (UK) Switzerland Office P.O. Box 2124 Zugerstrasse 46 Chelmsford 6314 Unterägeri Essex CM1 3UP England Switzerland Tel: +44 (0)1245 600 560 Tel: +41 41 541 5877 Fax: +44 (0)1245 600 030 Fax: +41 41 541 5878 Email:...