Det-Tronics Open Path Eclipse Instructions Manual

Open Path Eclipse Model OPECL ...

Detectable Gases..................................................2 Standard Output....................................................2 Optional Relays.....................................................2 Communication.....................................................3 Recording Capability.............................................3 Detection Range...................................................3 OPERATION.................................... ...

instruction manual before installing or operating the gas detection system. This product is intended to provide early warning of the presence of a flammable or explosive gas mixture. Proper device installation, operation, and maintenance is required to ensure safe and effective operation. APPLICATION The Open Path Eclipse Model OPECL is an open path infrared gas detection system that provides continuous monitoring of combustible hydrocarbon gas concentrations in the range of 0 to 5 LFL-meters, over a distance of 5 to 120 meters. Standard system outputs include an electrically isolated/non-isolated ...

The OPECL transmitter module illuminates a direct linear path ending at the OPECL receiver module. As flammable hydrocarbon gases intersect the light beam between the two modules, certain IR wavelengths are absorbed by the gas, while other IR wavelengths are not. The amount of IR absorption is determined by the concentration of the hydrocarbon gas. A pair of optical detectors and associated electronics located in the receiver module measure the absorption. The change in intensity of the absorbed light (active signal) is measured relative to the intensity of light at a non-absorbed wavelength (re ...

mA signal output, with HART and RS-485 MODBUS serial communication from the receiver module. EQP Models communicate with the EQP controller over the LON. RECORDING CAPABILITY Non-volatile memory is provided to save the 10 most recent calibrations, alarm/fault events, and minimum/ maximum operating temperature history. A real time clock is provided to record operating service time and to time stamp events. This information is accessible using HART and MODBUS communication, or S3 software for EQP models. DETECTION RANGE The standard OPECL system can cover a range of 5 to 12 ...

normal, alignment and calibrate. Warm-up Warm-up mode is entered upon application of 24 Vdc operating power. During warm-up, the 4-20 mA current loop output will indicate warm-up, the indicating LED is yellow, and the alarm outputs are disabled. The warm- up mode lasts nominally two minutes after power-up. Normal After warm-up mode is completed, the device automatically enters the Normal mode, and all analog and alarm outputs are enabled. Alignment The OPECL modules must be properly aligned before normal operation is attained. There are two alignment procedures: 1. Basic Al ...

mA analog signal output. Refer to Table 3. Signaling modes include two predefined and one user defined mode. OPGD-Rx mode (default) is available as well as a user defined mode for third party compatibility. TRANSMITTER LAMP OPERATION Dual xenon lamps illuminate the linear detection path from the transmitter to the receiver. Should excessive degradation of the light intensity occur, the transmitter automatically increases the light output of the bulbs. The receiver recognizes this condition by the change in flash pulse coding and responds by initiating a "Tx ...

24 Vdc nominal. Operating range is 18 to 30 Vdc. Ripple cannot exceed 0.5 volts P-P. POWER CONSUMPTION (Per Module)— Transmitter 5.0 watts nominal @ 24 Vdc, 6.9 watts @ 30 Vdc. 5.8 watts peak @ 24 Vdc, 7.5 watts peak @ 30 Vdc. Receiver Without Relays 6.0 watts nominal @ 24 Vdc, 7.6 watts nominal @ 30 Vdc. Receiver With Relays 6.4 watts nominal @ 24 Vdc, 8.0 watts nominal @ 30 Vdc. TRANSMITTER LAMPS Two xenon flashlamps, field-replaceable module. WARMUP TIME— 1 minute for transmitter. 30 seconds for receiver from power-up when correctly aligned. CURRENT OUTPUT— Linear 4-20 mA (isolate ...

NOTE Misalignment will cause the manufacturer stated Accuracy limits to increase, but remain within the limits of EN 50241-1, -2, EN 60079-29-4, and IEC 60079-29-4. TEMPERATURE RANGE— Operating: –55°C to +60°C (–67°F to +140°F) Storage: –55°C to +85°C (–67°F to +185°F) Hazardous Locations: Refer to the appropriate Appendix for correct ambient temperature range: Appendix A - FM Appendix B - CSA Appendix C - ATEX Appendix D - IEC HUMIDITY— 5 to 99% relative humidity; designed for outdoor applications. OPERATING PRESSURE— 91.5 - 105.5 kPA non-compensated. MEA ...

Diameter: 3.5 inches (9 cm) nominal 4.5 inches (11 cm) maximum Mounting Plate Height: 14.5 inches (37 cm) Width: 6.5 inches (16 cm) Designed to attach to a 4 inch nominal diameter pipe. Refer to Figure 3A for mounted dimensions and Figure 3B for maximum pan/tilt angles of the mounting plate. SHIPPING WEIGHT— Transmitter or receiver (replacement): 30 pounds (14 kg) Transmitter and receiver with mounting hardware: 75 pounds (34 kg) WARRANTY— 2 year limited warranty from date of manufacture. 2251E 14.5 (36.8) 14.3 (36.3) 7.8 (19.8) 7.8 (19.8) 7.3 (18.5) Figure 3A—Mounted Dimensions of ...

CAUTION The wiring procedures in this manual are intended to ensure proper functioning of the system under normal conditions. However, because of the many variations in wiring codes and regulations, total compliance to these ordinances cannot be guaranteed. Be certain that all wiring complies with the NEC as well as all local ordinances. If in doubt, consult the authority having jurisdiction before wiring the system. Installation must be done by a properly trained person. CAUTION This product has been tested and approved for use in hazardous areas. However, it must be properly installed and used only under the ...

is also recommended: LED Visibility Select a mounting orientation where the Open Path Eclipse status indication LED is visible to personnel within the area. Module Separation Distance The transmitter and receiver modules must be installed directly facing each other across the area to be protected. Physical obstructions in the direct line of sight between the modules are not permitted. The overall line of sight distance between the modules must not fall outside the specified operating distance range (refer to “Specifications” for details). Multiple System Installations If mu ...

OPECL modules must be affixed to a solid, non-vibrating structure capable of supporting a minimum of 100 lbs (46 kg), located within the system’s rated separation distance. A building wall, a heavy steel I-beam, or nearly any type of masonry typically provides the most rigid mounting surface available. However, avoid the use of wood structures or supports if the possibility of warping exists. When using a vertical post, the post must be absolutely stable and without vibration. Square stock pole is recommended. Mounting height should not exceed 3 meters. The post can be set into the ground or attached ...

plate and tighten the OPECL mounting bolts to 20 lb.-ft. minimum. 2. Install the lower mounting bracket. 3. Place the pan-tilt mounting plate on the lower bracket and install the upper mounting bracket. Tighten the mounting hardware to 20 lb.-ft. minimum. Tighten the alignment bolts/nuts hand tight only. NOTE Anti-seize material (provided) must be applied to the U-bolt threads at the time of installation to prevent galling. 24 VDC POWER SUPPLY REQUIREMENTS Calculate the total gas detection system power consumption rate in watts from cold start-up. Select a power s ...

1. To ensure proper operation, OPECL power terminals (terminals 1 and 2 for Rx and Tx) and 4-20 mA terminals (terminals 6 and 7 for Rx) must receive 18 Vdc minimum. 24 Vdc is recommended. Terminals 1 and 4, and terminals 2 and 5 on the OPECL Rx are internally connected (see wiring diagrams). 2. Always determine voltage drops that will occur to ensure that 24 Vdc is delivered to the OPECL. 3. Normally, nothing smaller than 18 AWG (1.0 mm2) is recommended by Det-Tronics for OPECL power cabling. Wire size requirements are dependent upon power supply voltage and wire length. The maximum distance bet ...

using a short piece of suitable flexible conduit to allow optical alignment of the modules. Conductor insulation should be stripped off with a bare conductor length of 0.2 inch (5 mm) minimum and 0.7 inch (18 mm) maximum). Open Path Eclipse screw terminal torque range is 3.5–4.4 lb.-in. (0.4–0.5 N·m). Cable shield, if used, should be properly terminated. If not terminated, clip the shield wire off short and insulate it within the detector housing to prevent the shield wire from accidentally contacting the detector housing or any other wire. Figure 8 shows the wiri ...

– 4-20 MA RS-485 A RS-485 B RELAY POWER FAULT LOW ALARM HIGH ALARM 1 2 3 4 5 6 7 8 9 10 11 12 13 NO USER CONNECTION 4 to 20 MA *TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM. * Figure 13—Detector Wired for Non-Isolated 4 to 20 ma Current Output (Sourcing) 24 VDC + – + – –24 VDC –24 VDC +24 VDC +24 VDC CALIBRATE + 4-20 MA – 4-20 MA RS-485 A RS-485 B RELAY POWER FAULT LOW ALARM HIGH ALARM 1 2 3 4 5 6 7 8 9 10 11 12 13 NO USER CONNECTION 4 to 20 MA B2050 *TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM. * Figure 12—Detector Wi ...

– 4-20 MA RS-485 A RS-485 B RELAY POWER FAULT LOW ALARM HIGH ALARM 1 2 3 4 5 6 7 8 9 10 11 12 13 NO USER CONNECTION + – 4 to 20 MA *TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM. * Figure 15—Detector Wired for Isolated 4 to 20 ma Current Output (Sourcing) 24 VDC + – 24 VDC + – –24 VDC –24 VDC +24 VDC +24 VDC CALIBRATE + 4-20 MA – 4-20 MA RS-485 A RS-485 B RELAY POWER FAULT LOW ALARM HIGH ALARM 1 2 3 4 5 6 7 8 9 10 11 12 13 NO USER CONNECTION + – 4 to 20 MA *TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM. * Figure ...

the “Installation” section, it is ready for commissioning. If the application requires that specific changes be made to the factory settings, HART communication will be required. NOTE Ensure that alarm devices are bypassed during commissioning. NOTE The safety function (gas input-to-actuation/ notification) must always be verified upon completion of installation and/or modification. ALIGNMENT OVERVIEW The OPECL modules must be properly aligned before normal operation will be attained. Alignment consists of a basic alignment stage and a fine alignment stage: 1. Basic Ali ...

the receiver module by inserting the captive thumbscrews into the threaded holes on the faceplate. See Figure 19. Ensure that the telescope is properly attached, that the eyepiece is accessible, and that the thumbscrews are completely tightened. 7. Slowly adjust the receiver module up/down as required using the vertical adjustment bolts until the telescope cross hairs are centered as close as possible to dead center on the window of the transmitter module. Tighten the vertical alignment locking nuts so that no movement will occur. VERTICAL ALIGNMENT LOCKING NUTS (2) VERTICAL ADJUSTMENT B ...