If the products or procedures are used for purposes other than as described in the manual, without receiving prior confirmation of validity or suitability, Net Safety, does not guarantee the results and assumes no obligation or liability. No part of this manual may be copied, disseminated or distributed without the express written consent of Net Safety.
WARRANTY 1. Limited Warranty. Subject to the limitations contained in Section 10 (Limitation of Remedy and Liability) herein, Seller warrants that (a) the licensed firmware embodied in the Goods will execute the programming instructions provided by Seller; (b) that the Goods manufactured by Seller will be free from defects in materials or workmanship under normal use and care;...
TABLE OF CONTENTS IMPORTANT INFORMATION ............................2 WARRANTY .................................. 3 INTRODUCTION ................................6 THE PRODUCT ................................6 TRANSMITTER/CONTROLLER ............................6 THE MANUAL .................................. 6 Enclosure Dimensions................................7 ....................................7 SECTION 1: INSTALLATION ............................ 8 1.1 U ..................................8 NPACK 1.2 M ..................................
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ARTS CCESSORIES 6.5 H ............................46 OW TO ETURN QUIPMENT APPENDIX .................................. 47 APPENDIX A: ELECTROSTATIC SENSITIVE DEVICE (ESD) ....................47 APPENDIX B: RESISTANCE TABLE ..........................48 APPENDIX C: MILLENNIUM II TRANSMITTER SPECIFICATIONS ..................49 MAN-0148, Rev 1 March 2016...
THE PRODUCT TRANSMITTER/CONTROLLER A Millennium II gas detection system is composed of a field mounted transmitter\controller and Millennium II series sensors which may be integrally mounted to the controller or remotely mounted as far as 2000 feet away. The transmitter is certified for use in hazardous locations and is available as a single or dual sensor system. All operator controls including configuration and calibration can be accessed without opening the enclosure by using other communication devices and the attached magnet to actuate reed switches.
Enclosure Dimensions The Millennium II Transmitter enclosure is available in Aluminum (AL6061) and Stainless Steel (SS316). Dimensions are in inches and millimeters. Figure 1: Transmitter Enclosure Dimensional Drawing * M20, ½-in. NPT, & ½-in. BSP threads also available MAN-0148, Rev 1...
1.2 Mounting Ensure transmitter and sensor are securely mounted, taking into consideration all requirements. Sensors may be installed directly to transmitters or remotely using a Certified Net Safety junction box. See Figure 11 when mounting sensor remotely. 1.2.1 Transmitter Orientation Option Depending on the installation and mounting requirements, the transmitter enclosure (housing) may be mounted in different orientations as seen in Figure 2.
1.2.2 Transmitter electronics module and Relay options The transmitter electronics module may be equipped with 4 electromechanical relays or 4 solid-state relays which are mounted to the main terminal board via plastic standoffs. Relay boards are field replaceable by simply unlocking the plastic standoffs with a small flat head screw driver.
1.2.3 Rotating electronics module relative to enclosure and conduit entries The electronics module consists of the relay board and faceplate (Display/CPU assembly) with main terminal board. To rotate the electronics module, follow these instructions: Turn off power to transmitter and ensure area is de-classified. Remove the enclosure cover.
In applications where wiring is installed in conduit, conduit must not be used for wiring to any other electrical equipment. For effective communication, Net Safety limits sensor separation to 2000 feet using 16AWG wires. Modbus RS-485 connection 2-wire mode, multipoint serial line available. Up to 247 addresses allowed.
Net Safety recommends using CSA armored instrumentation cable (ACIC 2PR 16AWG, 300V, ISOS, PVC) when rigid (steel) conduit is not used. See Figure 5. This cable should be used between the PLC/PANEL/DCS and the Millennium II Transmitter, as well as between the Millennium II Transmitter and junction box.
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Shield wires from each twisted pair Net Safety connected to “GND” (Earth Ground) on Junction Box terminal block. Millennium II Cable gland & Sensor Armored cable Shield wire from flexible Armored cable and sensor ground wire (Green wire) connected to Earth ¾-in.
2.1.3 Analog output, isolated supply, non-isolated supply and jumper configuration The analog output may be powered from the main instrument power supply or a separate, independent power supply in which case an isolated wiring configuration is necessary. To set a Non-isolated or Isolated current output, simply move the Jumpers/shorting jacks (JP3 and JP4) to either the Non- isolated or Isolated current position.
2.1.4 Remotely mounted sensors jumper configuration Sensor separation from the transmitter may extend up to 2000 feet in which case a junction box is required. When mounting sensor remotely (separating sensor from transmitter), Jumpers JP1 and JP2 should be installed over the pins.
2.1.5 Sensor and Transmitter terminals Warning Before wiring, ensure power to the unit is switched off. Connect the sensor wires to the sensor terminals of the transmitter and connect the transmitter’s power and output terminals to the wiring leading to the Power source/panel.
The maximum distance between the sensor and transmitter is limited by the resistance of the connecting wiring, which is a function of the gauge of the wire being used. For effective communication, Net Safety limits the separation distance between sensor and transmitter to 2000ft using 16 AWG wire. See Appendix B for information on wire gauge and resistance.
2.1.8 Wiring drawings Wiring drawings show general ways in wiring the system for analog signal output. Consult qualified personnel on specific wiring requirements. Figure 12: Non-isolated terminal connection MAN-0148, Rev 1 March 2016...
2.1.9 Installation Checklist Prior to operation, it is important to do the following checks. • Ensure transmitter and sensor are properly and firmly mounted. • Ensure that the enclosure certified stopping plug is tightened to unused conduit entry/opening, to maintain ingress protection and flameproof type protection.
SECTION 3: Transmitter and faceplate description 3.1 Transmitter Power Up After power is applied to the transmitter, a warm-up routine will begin, the duration of which depends on the sensor type. The display will indicate the sensor warming up and the Status LED will flash Slow Red and current output will be 3.0mA. After the warm-up period, the transmitter will enter normal operation and the screen will display: “Channel 1 00 %LEL (or PPM), Channel 2 00 %LEL (or PPM).”...
3.2 Display The Millennium II is equipped with an Organic LED (O LED) display. It allows the user to see the concentration of gas present for each individual channel and the various options offered. The display has a wide temperature rating and will operate well in lowly lit conditions.
3.5.1 Intrusive Access The menu buttons provide access to the Millennium II’s Main Menu options allowing the user to review and configure existing options under sub menus and perform calibration. There are three visible main menu buttons that are located directly under the display screen.
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Figure 15: Switch positions Note: menu buttons and reed switch provide the same functions. Menu button = reed switch, indicated by ‘ ’ MAN-0148, Rev 1 March 2016...
SECTION 4: Operation 4.1 Menu options The main menu provides access to various functional settings/options, as seen in the Table 2 below. Each menu option has a submenu, whereby configuration is done. Table 2: Main menu options Calibrate Sensor Select Display Language Self-test Relay Enable/Disable Channels Modbus Setup...
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Sub menu Figure 17: Menu structure flow chart Hour, Setup current Time (Activate minutes Activate any menu button menu button 3 to (Navigate with 1& 2, select then select ‘yes’ with menu display sub menu) Sub menu with button 3. See pages 31 button 1 to enter main &32).
The following calibration procedure should be followed to ensure an accurate correlation between the output signal and the gas concentration. For accurate performance, the Millennium II is calibrated using 50% span gas. The transmitter will however, allow some flexibility in the use of calibration gas with some sensors; calibration gas outside of 50 % span (10% - 60% span gas) will be allowed on specific sensor models (see specific sensor manual for details).
4.2.2 (Cont’d) Zero calibration option “Zero” calibration option is selected if the sensor is only being zeroed (this not a complete calibration) It does not require the application of span gas, as only the sensor’s zero point is adjusted. Ensure that no contaminants are present, if the surrounding air is to be used for Zeroing.
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Figure 18: Calibration Flow chart Purge system with clean air from canister, Calibration Procedure Calibration complete then remove air canister Activate any menu button Remove Calibration Gas Span Failed. Perform manual Enter Main Menu reset. See Span successful? page 32. Repeat calibration .proceure.
4.2.3 Enable / Disable channels This option allows the Millennium II Transmitter channels to be enabled or disabled. The default value is channel 1(CH1) enabled for single sensor models while channel 2(CH2) is permanently disabled. Both channels are enabled for two sensor models.
4.2.5 Setting Relay options This option allows the Alarm relay coils to be configured as energized or de-energized and latching or non-latching. • FAULT RELAY: The Fault relay is Energized and Non-Latching. This relay is not configurable. • ALARM RELAYS 1, 2 and 3: Factory set as De-energized and Non-Latching. These relays are configurable. switch 1 1.
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Under the specific relay with channel, activate the enter key ( ) to choose the appropriate setting. See Table 3 below. Table 3: Available Millennium II Relay Options Relays and Assignment Options ALARM RELAY 1 (RL1) with ALARM RELAY 2 (RL2) with...
4.2.9 MODBUS Setup This option enables the following MODBUS parameters to be set: • Addressing: From 001 (default) to 247 • Baud Rate: 02400 bps, 04800 bps, 09600 bps (default), 19200 bps, and 57600 bps. • Frame Format: EVEN Parity (default), ODD Parity, NO Parity. switch 1 1.
“Exit” at each menu stage (sub menu and main menu). 4.3.2 View Event Log The Millennium II Transmitter has the ability to store up to 980 events. Events can be viewed by navigating through this menu option. The most recent events are shown first.
See steps to initiate relay self test below. Proper functioning electromechanical relays have a clicking sound during this test. If the Millennium II Transmitter is equipped with Solid State relays, then an Ohm meter must be used to check the changes in resistance values between contacts.
4.3.5 Sensor Upper Limit (Range) This option is used to set the upper limit (range) of the gas being detected. The upper limit will vary depending on the sensor used and may not be selectable for all sensors. switch 1 1.
5. To exit, select “Exit” at each menu stage (sub menu and main menu). 4.3.8 Serial Number & Firmware Version This option is used when the serial number or firmware version of the Millennium II Transmitter is required. switch 1 1.
Self-testing circuitry continuously checks for problems that could prevent proper response. When power is applied to the Millennium II Transmitter, a micro controller automatically tests the system to ensure that it is functioning properly. During normal operation, it continuously monitors the signal from the internal sensor source. In addition, a “watchdog” timer is maintained to ensure the program is running correctly.
5.4 Sensor Status Registers, Transmitter Status LED, Current output and Meaning Table 6 below, shows the sensor status registers, and the transmitter’s current output, along with corresponding status LED and meaning. Note: To differentiate between conditions resulting in 2.5 mA, view the Event Log. See Event Log menu option. Table 6: Current output and meaning Status LED Reg.
The Millennium II Transmitter utilizes 2- wire Modbus RS-485 multi serial mode. This Modbus solution implements a 2-wire electrical interface in accordance with the EIA/TIA-485 standards. For this MODBUS configuration, it is important that a third wire be used for connecting all the ‘Common’...
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Table 7: Modbus Registers Reg# Meaning Readable Writeable 40001 Concentration value as calculated by sensor (RTUsensor_out), Channel 1 40002 Sensor status (RTUsensor_stat), Channel 1 40003 Temperature of sensor element housing in Kelvin (RTU temperature), Channel 1 40004 RFU, Channel 1, always read as 0x0000 40005 RFU, Channel 1, always read as 0x0000 40006...
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Table 8: Transmitter Status Register value and meaning Meaning 0x0000 Normal Sensor operation – no fault or alarm has happened 0x0001 Channel 1 sensor fault status tripped. Communication Fault, Calibration Fault, etc 0x0002 Channel 1 Low Alarm tripped 0x0004 Channel 1 High Alarm tripped 0x0008 Channel 2 sensor fault status tripped.
Be sure to prevent unwanted response of external monitoring devices and equipment during this procedure. If the Millennium II’s response to calibration gas is within the specified accuracy then it is not necessary to perform a calibration.
The transmitter and its electronic components/parts should be stored in locations free from dust and moisture. The storage temperature should be well within the limits of the certified temperatures. See Appendix C for certified temperatures. 6.4 Spare Parts /Accessories Table 9: Spare Parts Numbering Net Safety Part Number Description CCS-1 Calibration Cup/Splash Guard DSC-1...
6.5 How to Return Equipment A Material Return Authorization number is required in order to return equipment. Please contact Net Safety at (866) 347-3427, before returning equipment or consult our Service Department to possibly avoid returning equipment. If you are required to return equipment, include the following information: A Material Return Authorization number (provided over the phone to you by Net Safety).
Appendix Appendix A: ELECTROSTATIC SENSITIVE DEVICE (ESD) Definition: Electrostatic discharge (ESD) is the transfer, between bodies, of an electrostatic charge caused by direct contact or induced by an electrostatic field. The most common cause of ESD is physical contact. Touching an object can cause a discharge of electrostatic energy—ESD! If the charge is sufficient and occurs near electronic components, it can damage or destroy those components.
Appendix C: MILLENNIUM II Transmitter Specifications Transmitter model Analog/Digital/Relay Electrical IR: <150 mA @ 24 VDC Power Consumption (with sensor attached) Solid State( H2S or Ammonia): 100mA @24VDC Voltage Range 10.5 – 32 VDC Electromagnetic EN 50270:2006, FCC Part 15 Part B, ICES-003...
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