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RAEGuard

S

EC / LEL / IR User’s Guide

This diagram shows the submenu of parameters for the 4-20mA
Analog Menu:

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Summary of Contents for RAEGuard EC

Page 1: ...RAEGuardS EC Toxic Gas and Oxygen Transmitter RAEGuardS LEL Combustible Gas Transmitter RAEGuardS IR Non Dispersive Infrared NDIR Transmitter User s Guide P N 033 4117 E00 Rev A August 2009...

Page 2: ...he risk of electric shock turn the power off before removing the instrument cover Disconnect the power before removing the sensor module for service Never operate the instrument when the cover is remo...

Page 3: ...ctrical Wiring 14 Instrument Assembly Installation 15 Earth Grounding Instructions 16 2 3 Display And User Interface 18 User Interface 18 Magnet Key 18 Using The Magnet Key 19 System Initialization 19...

Page 4: ...VDC and provides an analog 4 to 20mA output signal and digital RS 485 ModBus output signal within the corresponding ranges of gas detection of 0 to 100 LEL or 0 to 50 000 ppm CO2 The RAEGuardS IR uses...

Page 5: ...plosion proof housing when adjusting parameters LCD and status error LEDs LED alarms when High or Low alarm point is reached Operation at 9 to 36 VDC Two dry contacts 30V 2A normally open or normally...

Page 6: ...on Classification ATEX II 2G Ex d IIC T6 40 C Tamb 60 C Complies with EN60079 0 2004 EN60079 1 2004 Example Of Name Plate On RAEGuardS Models Notes Sensor Name is replaced by the actual sensor name FG...

Page 7: ...g IP 65 Power 9 to 36VDC max 40mA at 24V or 1W Output 4 20mA RS 485 baud rate 4 8 9 6 or 19 2kb sec Sampling Internal diffusion Display 7 segment 4 digit LCD and 4 color coded alarm LEDs User Interfac...

Page 8: ...IIC T6 40 C Tamb 60 C Complies with EN60079 0 2004 EN60079 1 2004 IP Rating IP 65 Power 9 to 36VDC max 60mA at 24V or 1 5W Output 4 20mA RS 485 Baud rate 4 8 9 6 or 19 2kb sec Sampling Internal diffus...

Page 9: ...EL to 99 LEL Note When CO2 10000 ppm the LCD displays the reading When CO2 10000 the LCD displays X XE4 which represents X X x 104 For example when the monitor display 1 5E4 it means 15000 ppm when th...

Page 10: ...ith EN60079 0 2004 EN60079 1 2004 IP Rating IP 65 Power 9 to 36VDC max 60mA at 24V or 1 5W Output 4 20mA RS 485 Baud rate 4 8 9 6 or 19 2kb sec Sampling Internal diffusion Display 7 segment 4 digit LC...

Page 11: ...g the sensor s The period of initial use must be of sufficient duration to ensure that the sensors are exposed to all conditions that might have an adverse effect on the sensors Verify the calibration...

Page 12: ...LEL are housed in a 7 4 L x 5 9 W x 4 3 H 188mm x 150mm x 109mm case with two holes 5 25 133 mm from center to center The RAEGuardS IR s dimensions vary slightly because of the sensor size 6 6 L x 5...

Page 13: ...group C atmospheres 2 To prevent ignition of hazardous atmospheres area must be free of flammable vapors and supply circuit must be disconnected before removing cover 3 For European application the i...

Page 14: ...ter clockwise As shipped one of the conduit holes is covered by the provided hex head plug The other conduit is shipped with connected wires 2 Pull off the retaining clip to release the instrument ass...

Page 15: ...nter clockwise As shipped one of the conduit holes is covered by the provided hex head plug The other conduit is shipped with connected wires 6 Unlock the 12 pin connector 2 Pull off the retaining cli...

Page 16: ...lock 1 RS485B 485B 5 4 20 mA Output 4 20mA 6 Power Supply Output Common P 7 Block 2 Power Supply 9 to 36VDC P 8 Instrument Assembly Installation 1 Plug all terminal block plugs into the correct termin...

Page 17: ...The wire should have a minimum cross section area of 4mm2 for its conductor Wire Min 4 mm2 cross section Crimped terminal M4 flat washer M4 Split washer M4 Screw Internal Earth Grounding Use the same...

Page 18: ...shed Grounding Wires Internal and external grounding are shown here as well as an alternate external grounding point Always follow local electrical guidelines External earth grounding Internal earth g...

Page 19: ...digit LCD display and three keys MODE and The three keys are operated by using the Magnet Key RAEGuardS EC user interface Magnet Key The RAEGuard S EC has no external switches but instead uses the ma...

Page 20: ...RAEGuardS EC RAEGuard Magnet Key touching glass above the triangle Important Never drag the key sideways or two functions may be activated System Initialization When the RAEGuard S EC system power is...

Page 21: ...are outside a specified range or limit Alarm Contacts The alarm contacts or alarm relay can be used to drive user supplied external alarms such as a light or buzzer The external alarms open in normal...

Page 22: ...exposing the sensor to a known concentration calibration gas after a period of time The RAEGuard S is calibrated using a two point calibration process First use a zero gas Then use a span gas contain...

Page 23: ...t page Optional To exit the Calibration menu press to return to the Reading Display 3 Turn on the gas flow Allow gas to flow into the sensor for 30 seconds before zero calibration Then press to start...

Page 24: ...ide Zero calibration automatically advances to span calibration when complete Span Calibration 1 Connect the span gas cylinder to the metal filter gas adapter on the RAEGuardS transmitter using the pr...

Page 25: ...w into the sensor for 30 seconds before span calibration Then press to start calibration The Span LED starts blinking The Span message alternates with a countdown timer Note Wait for the entire countd...

Page 26: ...span calibration gas and remove the cylinder 2 5 Advanced Menu EC LEL The Advanced menu on the RAEGuardS EC and LEL allows you to change the values for each reading and setup option To access the Adva...

Page 27: ...00 or 4800 LItE Backlight Aout Analog output 4mA and 20mA adjustment tESt Test Function of LED External Alarm and 4 20mA To change a value press MODE until the desired parameter appears Press to enter...

Page 28: ...gh the parameters by pressing MODE To edit a parameter press The screen shows the current reading value of the parameter You can exit Advanced Menu at any screen by pressing In addition Advanced Menu...

Page 29: ...RAEGuardS EC LEL IR User s Guide This diagram shows how to edit parameter values and save changes for most of the parameters 28...

Page 30: ...RAEGuardS EC LEL IR User s Guide This diagram shows the submenu of parameters for the 4 20mA Analog Menu 29...

Page 31: ...shows the submenu of parameters for the Test Menu The analog output steps from 4mA to 20mA in 1mA steps and then steps back down to 4mA before returning to the upper menu Each step is held for 3 seco...

Page 32: ...ytime a submenu screen is idle for more than 60 seconds the transmitter will return to the Reading Display Advanced Menu Submenu LCD display Default Standard gas concentration CO2 C5E3 represents 5000...

Page 33: ...changes and advance to the next submenu item Press to save changes The SAVE message appears on the screen to confirm changes have been saved 2 7 Restoring Default Values EC LEL You can reset all value...

Page 34: ...iation it absorbs a certain degree of radiation The absorbance at specified wavelength is a measure of the present gas concentration The RAEGuardS LEL uses a highly poison resistant catalytic bead low...

Page 35: ...The instrument is powered by a DC power supply located in a safe area The power supply on the PC board contains a switching and linear regulator that converts the main input voltage to 3 3V and 5V DC...

Page 36: ...tage gas LCD Main PCB Enclosure Cover Cable Socket PCB Enclosure Body 7R EC LEL or NDIR Sensor Holder Exploded View of RAEGuardS EC and LEL Components Periodically examine the sensor s opening to make...

Page 37: ...stems technical support E006 Reason Wire connection error Solution Check and reconnect wires E007 Reason Main PCB EEPROM error Solution Check and replace main PCB Couldn t turn on the unit Reason Wron...

Page 38: ...ution ppm Response Time T90 Span ppm Low ppm High ppm CO 0 1000 1 30s 50 35 200 H2S 0 300 0 1 20s 25 10 20 SO2 0 150 0 1 30s 5 2 10 NO 0 1000 0 5 20s 25 25 50 NO2 0 50 0 1 25s 5 1 10 Cl2 0 30 0 1 30s...

Page 39: ...ed As example be low 34 hex 52 decimal Overview This document describes the modbus protocol used in RAEGuardS products 1 Communication Setting Transmission MODE RTU Controller PC or Controller Client...

Page 40: ...igh Byte Client ID 03 00 08 00 02 CRC CRC Answering Message Device Address Function Code Byte Count Register Value CRC Low Byte CRC High Byte Client ID 03 04 Reading Highest Byte Reading Higher Byte R...

Page 41: ...P N 033 4117 E00 Rev A August 2009...

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