RX Series UL Listed Explosion Proof Antenna Coupler For Hazardous Area Applications Installation & Operation Manual (IOM)

Transcription

1 OVERVIEW The Solexy RX explosion proof antenna coupler is an integrated protection device that facilitates radio antenna installation in hazardous areas. The patented (7,057,577) RX coupler features a barrier circuit which blocks power voltage in the event of a radio transmitter/receiver fault. The circuit is encapsulated and housed in an explosion-proof stainless steel body. By utilizing the coupler with a certified enclosure and limiting your output power per local regulations, your radio system may be easily certified for hazardous area use with most passive antennas meeting the output wattage for a given area. The information in this manual is intended to assist with equipment design and system certification. INSTALLATION For proper installation, see the applicable control drawing DC Do not attach radio connection to radio until housing has been fully threaded into enclosure. 2. If lightning suppressor is used, connect to output side of the coupler. 3. Antenna and cable connections should be finger tightened only. Over tightening can cause permanent damage resulting in equipment failure. 4. Suitable trained personnel shall carry out installation into enclosure according with applicable electrical code practice. 5. The RX Antenna Coupler is designed to be used with a suitable enclosure with mechanical protection of the input side such as Class I or Class II rated enclosures. Can also be located in a Safe Area and cabled into a hazardous area. NOTE: If other language translations are needed it will be the responsibility of the distributors or OEM customers to supply these instructions and information within this document in the language of use. TECHNICAL DATA Ambient Temperature Range Certification Ratings -40 C to +75 C Class I Division 1 & 2 Groups A, B, C & D Class II Division 1 & 2 Groups F & G Certificate Number culus Listed File E Vol. 1 Dimensions Maximum Fault Voltage (Um) Diameter Wrench Flats Length, total Length, threads Maximum Input Power (Pi) See Table 1 Maximum RF Threshold Power (Pth) Frequency Range Impedance 1.38 (34.9mm) 1.25 (31.8mm) 2.50 (63.5mm) 0.95 (24.1mm) Group A, B, C & D and Group F & G 250 VAC Hz VDC, 250 VAC Hz See Table 2 Type J Type R Type L 50 Ohms 100MHz MHz 500MHz 3.9GHz, 4.6GHz - 6.0GHz 3.9GHz 4.6GHz Copyright 2015, IOM Page 1 of 4

2 MAXIMUM RADIO OUTPUT POWER The tables below provide the maximum allowable RF power that may be input to the RX coupler without exceeding intrinsically safe conditions. The tables do not consider any cable loss between the RF transmitter and the RX coupler and may therefore be considered as the maximum allowable RF transmitter output power when the RX coupler is directly connected to a RF transmitter. It must not be possible for an end-user to adjust the RF transmitter output power by software control or any other means if the maximum adjustable power exceeds those values in the tables below. The maximum permissible radio output power is determined by the equipment group the device will be operating, radio operating frequency and model frequency code of RX series coupler. These are the maximum powers that may be supplied to the RX series antenna coupler without exceeding intrinsically safe conditions. For frequencies between table values, use next highest table frequency value (i.e. for 960MHz, use table values for 1000MHz). Added cable loss between the RF transmitter and the RX coupler may allow the RF transmitter output power to exceed the values in the table as long as the cable loss ensures the power at the input of the RX coupler is less than or equal to the values provided in the tables where: Max RX coupler input power (dbm) = Table 1 Value (dbm) Table 1 Value (dbm) RF transmitter output power (dbm) coax cable loss (db) MAXIMUM PERMITTED RF THRESHOLD POWER (Pth) The RF threshold power, sometimes called the effective isotropic radiated power (EIRP), as defined in UL/CSA , is the product of the effective output power of a radio transmitter multiplied by the power gain of a connected antenna. The maximum threshold powers for each equipment group as defined by Table 4 in UL/CSA are provided below. Because most antennas list the gain relative to an isotropic radiator (dbi) instead of the raw power gain, it is often easier to simply add the antenna gain in dbi to the radio output power in decibel-milliwatts (dbm). Any added cable loss between the RF transmitter output and the RX input, or the RX output and the antenna may also be factored in. Pth(dBm) = RF transmitter output power (dbm) + Antenna gain (dbi) Coax cable loss between RF transmitter output and RX coupler input (db) Coax cable loss between RX coupler output and antenna (db) Note that the RX coupler input power is the combination of the RF transmitter output power and the cable loss connecting the transmitter output to the RX coupler input. Therefore, the formula can also be written as: Pth(dBm) = RX coupler input power (dbm) + Antenna gain (dbi) Coax cable loss between RX coupler output and antenna (db) The resulting threshold power calculated by the above formula MUST be below the threshold power for the operating area group rating given in Table 2. A radio output power lower than those provided above may be used to allow for an antenna with a higher gain. In case of device with multiple outputs and multiple antennas, each threshold power is calculated separately for each output/antenna. Gain of multiband antennas should be evaluated separately at each individual frequency. High gain directional antennas on the same device should not be directed in the same direction. IMPORTANT! When adding cable to the output of the coupler see formulation on bottom of page 4, this is to insure that the maximum allowable Joules are not exceeded per UL Copyright 2015, IOM Page 2 of 4

3 Radio Power, mw(dbm) Group F & G D C A & B Model Frequency Code J R J R J R J R Maximum Frequency [MHz] (35,9) 5644 (37,5) 3328 (35,2) 5120 (37.0) 2832 (34,5) 3500 (35,4) 2000 (33.0) 2000 (33.0) (35,7) 4620 (36,6) 3225 (35.0) 3864 (35,8) 2761 (34,4) 3276 (35,1) 2000 (33.0) 2000 (33.0) (35,6) 4089 (36,1) 3200 (35.0) 3511 (35,4) 2737 (34,3) 2976 (34,7) 2000 (33.0) 2000 (33.0) (35,5) 3200 (35.0) 3354 (35,2) 2737 (34,3) 2880 (34,5) 2000 (33.0) 2000 (33.0) (35.0) 3200 (35.0) 3225 (35.0) 2737 (34,3) 2832 (34,5) 2000 (33.0) 2000 (33.0) (34,6) 2737 (34.3) 2808 (34.4) 2000 (33.0) 2000 (33.0) (34,2) 2000 (33.0) 2000 (33.0) (33,8) 2000 (33.0) 2000 (33.0) (33,5) 2000 (33.0) 2000 (33.0) (33,1) 2000 (33.0) 2000 (33.0) (33.0) 2000 (33.0) 2000 (33.0) (33.0) 2000 (33.0) 2000 (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) (33.0) Table 1: Maximum Radio Transmitter Output Powers Copyright 2015, IOM Page 3 of 4

4 Equipment Group Threshold Power (W) Threshold Power (dbm) D, F & G C A & B Table 2: Maximum RF Threshold Power MODEL NOMENCLATURE XXX X X XX XX X XX Coupler Series RXF RPSMA Female RXN N Female RXS SMA Female 2 Threads 3 ¾ NPT 3 Material S AISI 303 Stainless (Standard) C AISI 316 Stainless (Optional) 4 Coaxial Radio Connector XX See sales literature 5 Input Coaxial Length (RG-316) XX 01 to 30 inches 6 Frequency Range X See Technical Data Chart on Page 1 (J, L, or R) 7 Certification Mark N0 UL/CSA Listed XN UL/CSA Listed and ATEX/IECEx CALCULATING JOULES FOR CABLE TYPE AND LENGTH Cable type Impedance Capacitance (Ω) per Foot (pf) LMR-100 or RG LMR-195 or RG LMR LMR-240 or RG LMR LMR-400 or RG213, LMR LMR LMR LMR LMR Note: For cables other than listed above consult with manufactures specification sheet for capacitance values. RF Radio Power Impedance Voltage (Ω) ΩW RX Coupler capacitance Max energy (Joules) allowed per UL Type pf J 81,6 Group A, B 50μJ R 18 Group C 250 μj L 56,4 Group D, F, G 950 μj Calculating Maximum Joules for adding cable to output of Coupler Formula Set Up E = 1 2 (C (1.5 V)2 ) Where: C= RX Capacitance + Input cable capacitance + Antenna cable capacitance V = Voltage 1.5 = Safety Factor Example RF Radio Power = 2 Watts or less = 10 Volts Antenna cable LMR400 length 50 feet = 1195pF RX (L) Coupler capacitance = 18pF Input cable capacitance = 73pF Total Capacitance C = 1286pF E = 1 2 (1286 pf (1.5 10)2 ) = μj Answer = 0.144μJ acceptable for any Group Copyright 2015, IOM Page 4 of 4

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