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Summary of Contents for Honeywell Zareba Sensepoint
- Page 1 Technical Manual Zareba Sensepoint Gas Detectors...
- Page 2 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525...
- Page 3 At the end of their working life, sensors must be disposed of in an environmentally safe manner. Disposal should be according to local waste management requirements and environmental legislation. Alternatively, sensors may be securely packaged and returned to Honeywell Analytics clearly marked for environmental disposal. Electrochemical cells should NOT be incinerated as they may emit toxic fumes.
- Page 4 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Safety ATEX Special Conditions of Safe Use Combustible version: The detector must be protected from impact. The integral supply cables must be protected from impact and terminated in a suitable terminal facility. The detector is considered to present a potential electostatic risk and must not be located in high air flows or rubbed.
- Page 5 2106M0525 Information Honeywell Analytics can take no responsibility for installation and/or use of its equipment if this is not done in accordance with the appropriate issue and/or amendment of the Technical Manual. The reader of this Technical Manual should ensure that it is appropriate in all details for the exact equipment to be installed and/or operated.
- Page 6 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Contents Safety Information Introduction General Installation Location Tools Dimensions Mounting Electrical Cabling Power Wiring All Detectors EXCEPT Oxygen Oxygen Detectors ONLY Accessories Fitting an Outer Filter Maintenance Operational Life Sensor Replacement Junction Box Replacement...
- Page 7 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525...
- Page 8 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Introduction The Sensepoint gas detector consists of a certified enclosure fitted with a replaceable certified gas sensor that can be used to detect gas indoors or outdoors in ATEX certified hazardous areas in Europe, and also in safe areas.
- Page 9 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Introduction All versions of the detector are designed for connection to a dedicated controller, e.g. Touchpoint1 or Touchpoint4 (contact your distributor for details). The detector’s construction allows unit dismantling for: • Gas sensors to be easily changed •...
- Page 10 At the end of their working life, sensors must be disposed of in an environmentally safe manner. Disposal should be according to local waste management requirements and environmental legislation. Alternatively, sensors may be securely packaged and returned to Honeywell Analytics clearly marked for environmental disposal. Electrochemical cells should NOT be incinerated as they may emit toxic fumes.
- Page 11 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Cautions The detector’s enclosure is suitable for installation within an explosive atmosphere as described in EN60079-0. Installation must be in accordance with EN60079-29-2 and current wiring regulations of the country where the enclosure is installed. The marking on the detector cover label must match the ambient temperature where the enclosure is installed. The detector enclosure is manufactured from glass-filled polyester (GFP) and fitted with stainless steel cover fixing screws, neoprene (or silicone) ‘O’ ring, and brass earth screws. Contact with aggressive substances may affect the performance of these materials. The detector is intended for use under normal industrial conditions and must not be installed in an area where extreme vibration may occur. The enclosure has been tested to IP66 and with the cover fully tightened down and the use of suitable cable entry devices will maintain this protection under normal working conditions, however a minimum protection of IP64 must be achieved. This chapter provides the following information about installing Sensepoint: • Locating the detector, see page 11 •...
- Page 12 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Follow the advice of: • Experts having specialist knowledge of gas dispersion • Experts having knowledge of the process plant system and equipment involved • Safety and engineering personnel Tools The following tools are required for installation: •...
- Page 13 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Note Diagram not to 76.5 mm (3.0”) scale 34.0 mm (1.3”) Enclosure Sensor Flammable 195.0 mm (7.7”) Sensor Toxic/Oxygen 205.0 mm (8.1”) Mounting Caution The enclosure must be fixed in position using the external mounting lugs and not mounted using any type of cable entry device. Sensepoint should be fitted to a flat firm surface suitable for the unit’s size and weight, e.g. a wall, as follows: 1 Drill two mounting holes in the surface.
- Page 14 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Electrical Caution Cabling and wiring must be in accordance with the recognized standards of the appropriate authority in the host country and meet the electrical requirements of the detector and controller. Cabling Cabling may be SWA cable or conduit run. Wire size 1.0 to 2.5 mm2 (17 to 14 AWG) max., with suitable M20 explosion-proof gland, or 1/2 in. NPT, or 3/4 in. NPT steel conduit. Use any of the 3 cable/conduit entries.
- Page 15 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Earth/Ground Point Star Ground/Earth Point Gas Detector Signal Enclosure 1 Enclosure 2 To avoid ground loops ONLY bond cable screens to ground/earth at the detector controller, but both To install cabling use the following procedure: 1 Open the lid of the enclosure.
- Page 16 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Power The toxic detector requires a power supply of 16-30 Vdc (at up to 30 mA). Ensure that a minimum supply of 16 Vdc is measured at the detector, taking into account the voltage drop due to cable resistance. For example, the nominal DC supply at the control panel has a guaranteed minimum supply of 18 Vdc.
- Page 17 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Toxic/Oxygen Detector Screen (braided wire - 4) Signal + Supply (blue - 2) (red - 1) Flammable Detector Sensitive Element (brown - 3) Earth Terminal Non- Sensitive Center Tap Element (white - 2) (blue - 1) 3 Close the lid of the enclosure and secure it.
- Page 18 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation All Detectors EXCEPT Oxygen a. Remove the sensor cap. Unscrew the cap in a counter-clockwise direction. Refer to the following diagram. b. Remove the protective disc from inside the sensor cap. Discard the disc.
- Page 19 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Sensor Body ONLY Oxygen Oxygen ONLY Cell Cell Protective Plug Screen adhesive face Packing Inner Filter Protective Disc Sensor Cap Counter-clockwise Clockwise f. Refit the sensor cap. Screw the cap in a clockwise direction. If required fit an accessory. Refer to the instructions supplied with the item except for fitting outer filters, see page 19.
- Page 20 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Installation Accessories The following accessories are available for use with the detector: • Weather housing • Flow housing • Collecting cone • Filters A full list of accessories and part numbers is given in the chapter “Parts”...
- Page 21 At the end of their working life, sensors must be disposed of in an environmentally safe manner. Disposal should be according to local waste management requirements and environmental legislation. Alternatively, sensors may be securely packaged and returned to Honeywell Analytics clearly marked for environmental disposal. Electrochemical cells should NOT be incinerated as they may emit toxic fumes.
- Page 22 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance Operational Life The pellistors used in the flammable gas sensor can suffer from a loss of sensitivity when in the presence of poisons or inhibitors, e.g. silicones, sulfides, chlorine, lead or halogenated hydrocarbons.
- Page 23 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance Sensor Replacement WARNING Do not open when energised Caution ONLY replace a sensor with another of the same type. The gas detector is fitted with a replaceable sensor which has no user-serviceable parts. At the end of the sensor’s life replace it using the following procedure: To change a sensor carry out the following procedure: 1 Isolate all associated power supplies and ensure that they remain OFF during the this procedure.
- Page 24 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance Grip the sensor collar firmly where it meets the enclosure and unscrew the sensor in a counter-clockwise direction. Refer to the warning about sensor handling and disposal at the start of this chapter.
- Page 25 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance Junction Box Replacement This section tells how to: • Remove the sensor from the enclosure • Replace the existing junction box with a replacement • Refit the original sensor to the new box Carry out the following procedure, referring to the previous diagram: 1 Isolate all associated power supplies and ensure that they remain OFF during the this procedure.
- Page 26 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance 15 Reconnect the sensor wiring at the terminal block. Cautions All conductors must be fully tightened down within the terminals. Conductor tightening screws must be below the surface of the terminal and it is important that the correct sized screwdriver is used. An oversized screwdriver will break the insulation around the terminal. The enclosure is fitted with an earth continuity plate and internal and external earth studs. A suitable ring-type terminal lug must always be used to secure the earth conductor. Refer to your written record for the position of the wiring, or see page 17.
- Page 27 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Maintenance Changing the Outer Filter This procedure applies to all types of Sensepoint gas detector. Refer to the following diagram. 1 Remove the sensor cap (or accessory). Unscrew the cap/accessory in a counter-clockwise direction.
- Page 28 Cannot adjust span or zero No adjustments can be made at the Controller’s user detector, only at the controller. document Calibration fails at controller Replace detector See page 22 Contact Honeywell Analytics if the problem isn’t resolved, see back page for contact information.
- Page 29 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Parts This chapter lists part numbers for spare items and accessories. Sensors Caution ONLY replace a sensor with another of the same type. Gas Type Range Part No. Flammable 0-100% LEL Methane SPSTAXF1SS Toxic Ammonia 0-50 ppm SPSTAXA1SS 0-1,000 ppm SPSTAXA2SS Carbon monoxide...
- Page 30 MAN0627_Issue 5_05/13 Zareba Sensepoint Technical Manual 2106M0525 Specifications General Fixed point gas detector for the protection of personnel and plant from flammable, toxic or oxygen gas hazards. Detectable Gases Gas Type/Gas Ranges Warm-up Operating Temperature* (min) Minimum Maximum Flammable 0-100% LEL <10...
- Page 31 Baseefa08ATEX0265X IECEx BAS08.0068X A full EC declaration of conformity is available on the CD accompanying the product. This document lists the European Standards with which the Zareba Sensepoint complies. Environmental IP rating IP65, IP66 with Weather housing in accordance with EN60529:1992...
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