Instructions PointWatchTM Infrared Hydrocarbon Gas Detector Model PIR9400 9.
Table Of Contents APPLICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Detection Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUCTIONS PointWatchTM Infrared Hydrocarbon Gas Detector Model PIR9400 Caution Be sure to read and understand the entire 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.
SPECIFICATIONS NOTE The following specifications for Accuracy, Stability and Repeatability are based on 0 to 100% LFL methane. PointWatch Gas Detector (PIR9400) INPUT VOLTAGE— 24 Vdc nominal. Operating range is 18 to 30 Vdc. POWER CONSUMPTION (Watts)— Input Voltage: 18 Vdc 24 Vdc Nominal 3.5 4.6 Maximum 4.0 5.5 ACCURACY (Room Temperature)— ±3% LFL from 0 to 50% LFL, ±5% LFL from 51% to 100% LFL. 30 Vdc 6.2 7.
ENCLOSURE MATERIALS— Aluminum (clear anodized) enclosure and weather protection baffles. Content: 0.8% to 1.2% Mg, 0.15% to 0.40% CU. WIRING— The PointWatch Detector has five 22 AWG wires, 20 inches long for wiring into a termination box, FlexVu UD10 or the Infiniti U9500.
CERTIFICATION— FM 5.86 (14.9) 5.2 (13.2) ® 2.7 (6.9) APPROVED For complete approval details for the PointWatch Detector Model PIR9400 and the PointWatch Termination Box Model PIRTB, refer to the appropriate Appendix: 4.7 (11.9) 3.46 (8.8) Appendix A - FM Appendix B - CSA Appendix C - ATEX/CE Appendix D - IECEx Appendix E - Additional approvals 6.57 (16.7) 9.45 (24.0) 2.5 (6.4) 3/4 – NPT M20 X 1.5 C1752 1.28 (3.3) Figure 3—Aluminum PIR9400 Dimensions in Inches (cm) A2307 5.86 (14.9) 9.
DESCRIPTION Calibration All PointWatch Detectors are calibrated at the factory with 50% LFL methane at 2.5% by volume, and are shipped with the internal gas selection switch set for methane gas detection. For additional information on calibration for other gases, refer to the “Linearized Output Options” section of this manual. Detection Method The PointWatch Model PIR9400 operates on the infrared absorption principle.
Figure 7—Short PIRTB 1. What kind of gas is to be detected? If it is lighter than air, place the sensor above the potential gas leak. Place the sensor close to the floor for gases that are heavier than air or for vapors resulting from flammable liquid spills. However, note that air currents can cause a gas that is heavier than air to rise. In addition, if the gas is hotter than ambient air or mixed with gases that are lighter than air, it could also rise.
5. The sensor should be accessible for maintenance. RESPONSE OF METHANE CALIBRATED POINTWATCH TO OTHER GASES 6. Excessive heat or vibration can result in premature failure of any electronic device and should be avoided if possible.
The point of intersection with the vertical axis represents PIR9400 output (0-100% LFL reading, or 4-20 mA proportionally) in response to the actual gas concentration at the installation using that particular linearized output setting. POINTWATCH GAS RESPONSE CURVES 100 POINTWATCH OUTPUT (% LFL) 90 80 70 In the example for gasoline vapor detection (Figure 9), the recommended PIR9400 standard gas setting and calibration gas to use is propylene.
CAPTIVE SCREWS (2) NOTE A 3/8” ratchet is needed to use the Cover Removal Tool. INNER FILTER ASSEMBLY OUTER FILTER ASSEMBLY 2. Unscrew the factory-tightened electronics mounting cover (see Figure 12) by rotating it counter-clockwise with the Cover Removal Tool (P/N 009170-001). Only apply torque to the threaded cover. Do not use improper tools such as pliers or vise grips. Do not twist or apply any force to the mirror assembly.
Intrusive and Non-Intrusive Calibration NOTE All baffle retainer screws are to be tightened to a torque setting of 5 Newton-meters. For hazardous locations, it is important to consider the options for calibration of the PointWatch Detector. The device can be installed so that calibration can be performed by one person without opening the explosion-proof enclosure (non-intrusive calibration).
The use of shielded cable in conduit or shielded armored cable is recommended for optimum RFI/ EMI protection. In applications where the wiring cable is installed in conduit, the conduit must not be used for wiring to other electrical equipment. To assure proper operation of the detector, the resistance of the connecting wire must be within the specified limits. The maximum distance between the detector and power source is determined by the power supply capability and wire size.
UD10 DISPLAY UNIT J3-3 J3-4 J3-5 24 VDC + SHIELD YELLOW HIGH ALARM COM J4-1 HIGH ALARM NC J4-2 HIGH ALARM NO J4-3 AUX ALARM COM J4-4 AUX ALARM NC J4-5 P1 J2 J4-9 24 VDC – 24 VDC + SHIELD P2-3 P2-2 P2-1 FAULT COM SHIELD MODBUS Connector J4-8 P2-4 RS485 B LOW ALARM NC LOW ALARM NO 24 VDC – RS485 A J2-1 J4-7 24 VDC + J2-2 J4-6 P2-5 COM AUX ALARM NO LOW ALARM COM P2-6 J2-3 PIR9400 POINTWATCH J3 BLACK WHITE RED Relay Connector P1-1 4-20 mA 4-20 mA – J3-2 P1-2 24
Detector Separation (Optional) Wiring Requirements for Detector Separation In applications where the detector must be installed in a different location from the control device, a PIRTB must be installed at the detector location to make the electrical connection. The control device can be the FlexVu UD10, Infiniti U9500 Transmitter or the tall cover termination box with window. Refer to Figure 21 for a typical separation diagram.
SEE NOTE 2 UD10 DISPLAY UNIT J4-5 J4-6 LOW ALARM COM J4-7 LOW ALARM NC J4-8 J3-5 24 VDC + SHIELD P2-1 J4-10 P2-2 J4-9 FAULT COM 24 VDC – LOW ALARM NO P2-3 RS485 B AUX ALARM NC AUX ALARM NO SHIELD J2-1 MODBUS Connector J4-4 24 VDC + RS485 A J4-3 P2-4 J2-2 HIGH ALARM NO AUX ALARM COM P2-5 COM J4-2 24 VDC – J2-3 J4-1 HIGH ALARM NC P2-6 J2 HIGH ALARM COM FAULT NC J4-11 FAULT NO J4-12 GREEN SEE NOTE 1 J3-4 24 VDC + P1 STB TERMINATION BOX J3 Relay Connector J3-3 S
CALIBRATION Calibration Procedures The procedures in this section explain calibration sequences for both stand alone PointWatch Detector applications (when a user supplied or no termination box is used) and for applications where the detector is used with the Det-Tronics supplied termination box (containing a magnetic reed switch and LED).
Calibration ProcedureInhibited Current Output During Calibration • The calibration sequence is initiated by momentarily connecting the calibration lead to the negative lead (common) of the power supply using the Cal Magnet or an external switch. If the Det-Tronics PIRTB with magnetic Cal Switch is being used, this is accomplished by holding the Cal Magnet near the side of the PIRTB for one second. The location of the Cal Switch is shown in Figure 17.
6. Apply 50% LFL calibration gas to the detector. This is accomplished by opening the valve on the calibration gas canister (see Figure 24 or Figure 25). A 2.5 liter per minute flow rate is recommended. 4. Wait for the zero calibration point to stabilize (typically 1 minute). After successful zero calibration: –– The LED will begin flashing (if used) –– The LED will continue flashing (if used) –– The current will drop to 2.0 mA. Proceed to step 5.
8. After successful calibration, close the valve on the calibration gas canister, remove the flexible tube from the calibration nozzle and replace the nozzle cap. If the calibration wind shield was used, remove it from the PointWatch Detector. The detector will return to normal operation after the gas level has returned below 5% LFL. 1. Be sure that only clean air is present at the sensor. (The microprocessor begins taking zero readings immediately upon entering the Calibrate mode.
MAINTENANCE 4. Connect the calibration gas canister, valve and tubing to the direct input nozzle as shown in either Figure 24 (aluminum model) or Figure 25 (stainless steel model) depending on the method used. The PointWatch Detector requires less routine maintenance than other combustible gas detectors. This is accomplished through its design that allows no undisclosed internal failures, and an optics protection system that is extremely resistant to fouling by external contamination.
Disassembly and Cleaning Procedure Important If the Model PIR 9400 Detector optics system is disassembled, calibration is required after re-assembly. The PointWatch Detector should be inspected periodically to ensure that its performance is not impaired by fouled optics or by clogging of the filter or hydrophobic filter. Inspection and/or periodic maintenance involves three different areas of the detector.
ELECTRONICS ASSEMBLY HYDROPHOBIC FILTER ELECTRONICS MOUNTING COVER MOUNTING TUBES WINDOWS MIRRORS REFLECTOR TUBES E1747 MIRROR ASSEMBLY NOTE: RETAINER IT IS NOT NECESSARY TO REMOVE THE ELECTRONICS ASSEMBLY FROM THE DETECTOR BASE ASSEMBLY.
TROUBLESHOOTING NOTE Check the new hydrophobic filter to ensure that the overall length matches the length of the existing filter, or the reflector tubes if no filter was present. If the new filter appears longer than the existing filter, trim off 0.23 inch (slightly less than 1/4 inch) of material from the new filter using a scissors. Take care to not trim the filter too short, as this will allow contaminants direct access to the detector optics and cause nuisance optics faults.
Table 5—Troubleshooting Table Current Level Status 2.4 to 3.9 mA Negative Zero Indication Corrective Action NOTE: This phenomenon is typically caused either by the presence of background gas during zero calibration, or by condensation on the device optics. If low level background hydrocarbon gas was present during calibration, the result will be a signal output level below 4 mA when the background gas clears. To correct this, the device must be re-calibrated with all background gas removed.
ORDERING INFORMATION Spare Parts & Accessories Description Part Number 006876-001 Hydrophobic Filter Kit Cal Port Cover 009192-001 Calibration Magnet 102740-002 Silicone Grease for PIR9400 threads (only) 006680-001 (6 cc syringe) 102868-001 Grease for termination box threads Cover Removal Tool 009170-001 Calibration Windshield Bag 006682-001 Refer to the PIR9400 Model Matrix for details.
PIR9400 MODEL MATRIX MODEL DESCRIPTION PIR9400 PointWatch Gas Detector TYPE MATERIAL A Aluminum S Stainless Steel (316) TYPE THREAD TYPE 2 METRIC M20 3 3/4” NPT TYPE WEATHER BAFFLE MATERIAL A Aluminum B Polyphthalamide Plastic TYPE HYDROPHOBIC FILTER Factory-Fitted Hydrophobic Filter 1 No Hydrophobic Filter 2 TYPE LEAD WIRE LENGTH A 22 inch B 44 inch TYPE APPROVALS B INMETRO (Brazil) R VNIIFTRI (Russia) W FM/CSA/ATEX/CE/IECEx 9.
APPENDIX A FM Approval The following items, functions and options describe the FM approval. Approval PointWatch Infrared Hydrocarbon Gas Detector Model PIR9400 Series. Explosion-proof for Class I, Division 1, Groups B, C, & D (T5) Hazardous (Classified) Locations per FM 3615. Nonincendive for Class I, Division 2, Groups A, B, C & D (T3C) Hazardous (Classified) Locations per FM 3611. Performance verified for 0 to 100% LFL Methane-in-air atmospheres per FM 6320, ANSI/ISA 12.13.01-2000.
APPENDIX B CSA Approval The following items, functions and options describe the CSA approval. Approval PointWatch Infrared Hydrocarbon Gas Detector Model PIR9400 Series. Explosion-proof for Class I, Division 1, Groups B, C, & D (T5) Hazardous (Classified) Locations per C22.2 #30. Nonincendive for Class I, Division 2, Groups A, B, C & D (T3C) Hazardous (Classified) Locations per C22.2 #213. Performance verified for 0 to 100% LFL Methane-in-air atmospheres per C22.2 #152.
APPENDIX C ATEX / CE Approval ATEX Certification PointWatch Detector Model PIR9400 0539 II 2 G Ex d IIB + H2 T4-T6 Gb EN 60079-29-1 DEMKO 09 ATEX 147301X T6 (Tamb = –55°C to +50°C) T5 (Tamb = –55°C to +60°C) T4 (Tamb = –55°C to +75°C) IP66. FM ® APPROVED EN Standards: EN 50270: 2006 EN 60079-0: 2009 EN 60079-1: 2007 EN 60529: 1991+A1: 2000 EN 60079-29-1: 2007. Read and understand instruction manual before operating.
PointWatch Termination Box Model PIRTB 0539 II 2 G Ex d IIC T5-T6 Gb EN 60079-29-1 DEMKO 02 ATEX 131326 T6 (Tamb = –55°C to +60°C) T5 (Tamb = –55°C to +75°C) IP66. FM ® APPROVED EN Standards: EN 60079-0: 2009 EN 60079-1: 2007 EN 60529: 1991+A1: 2000 EN 60079-29-1: 2007. All cable entry devices and blanking elements shall be certified in type of explosion protection flameproof enclosure ‘d’, suitable for the conditions of use and correctly installed.
APPENDIX D IECEx Approval PointWatch Detector Model PIR9400 IECEx ULD 10.0017X Ex d IIB+H2 T4-T6 Gb T6 (Tamb = –55°C to +50°C) T5 (Tamb = –55°C to +60°C) T4 (Tamb = –55°C to +75°C) IP66. IEC Standards: IEC 60079-0: 2007 IEC 60079-1: 2007 IEC 60529, 2.1.ed.+Corr. 1:2003+2:2007. CONDITIONS OF CERTIFICATION: The PointWatch, Model PIR9400 Infrared Hydrocarbon Gas Detector has a threaded wire feed through incorporating flying leads.
APPENDIX E ADDITIONAL Approvals Russia (GOST-R) PointWatch Detector Model PIR9400 GOST R Certificate of Compliance Pattern Approval Certificate of Measuring Instruments. PointWatch Termination Box Model PIRTB GOST R Certificate of Compliance. BRAZIL PointWatch Detector Model PIR9400 CEPEL 97.0059X Ex d IIB+H2 T4-T6 Gb IP66 T6 (Tamb = –55°C to +50°C) T5 (Tamb = –55°C to +60°C) T4 (Tamb = –55°C to +75°C). IEC Standards: IEC 60079-0: 2007 IEC 60079-1: 2007. IEC 60529, 2.1.ed.+Corr. 1:2003+2:2007.
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