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Wire resistance table 

Reference Manual 

June 2016 

MAN-0076, Revision 09 

 

40 

Wire resistance table 

Section 9:

 

Wire resistance table 

Distance 
Feet (Meters) 

AWG #20 

0.5 mm

2

 

AWG #18 

0.8 mm

2

 

AWG #16 

1.0 mm

2

 

AWG #14 

2.0 mm

2

 

100 (30.5) 

1.02 

0.64 

0.40 

0.25 

200 (61) 

2.03 

1.28 

0.80 

0.51 

300 (91.4) 

3.05 

1.92 

1.20 

0.76 

400 (121.9) 

4.06 

2.55 

1.61 

1.01 

500 (152.4) 

5.08 

3.20 

2.01 

1.26 

600 (182.9) 

6.09 

3.83 

2.41 

1.52 

700 (213.4) 

7.11 

4.47 

2.81 

1.77 

800 (243.8) 

8.12 

5.11 

3.21 

2.02 

900 (274.3) 

9.14 

5.75 

3.61 

2.27 

1000 (304.8) 

10.20 

6.39 

4.02 

2.53 

1250 (381) 

12.70 

7.99 

5.03 

3.16 

1500 (457.2) 

15.20 

9.58 

6.02 

3.79 

1750 (533.4) 

17.80 

11.20 

7.03 

4.42 

2000 (609.6) 

20.30 

12.80 

8.03 

5.05 

2250 (685.8) 

22.80 

14.40 

9.03 

5.68 

2500 (762) 

25.40 

16.00 

10.00 

6.31 

3000 (914.4) 

30.50 

19.20 

12.00 

7.58 

3500 (1066.8) 

35.50 

22.40 

14.10 

8.84 

4000 (1219.2) 

40.60 

25.50 

16.10 

10.00 

4500 (1371.6) 

45.70 

28.70 

18.10 

11.40 

5000 (1524) 

50.10 

32.00 

20.10 

12.60 

5500 (1676.4) 

55.80 

35.10 

22.10 

13.91 

6000 (1828.8) 

61.00 

38.30 

24.10 

15.20 

6500 (1981.2) 

66.00 

41.50 

26.10 

16.40 

7000 (2133.6) 

71.10 

44.70 

28.10 

17.70 

7500 (2286) 

76.10 

47.90 

30.10 

19.00 

8000 (2438.4) 

81.20 

51.10 

23.10 

20.20 

9000 (2743.2) 

91.40 

57.50 

36.10 

22.70 

10000 (3048) 

102.00 

63.90 

40.20 

25.30 

 
Resistance shown is one way.  This figure must be doubled when determining closed loop resistance. 

Summary of Contents for Net Safety Millennium II

Page 1: ...Reference Manual Part Number MAN 0076 rev 09 Release June 2016 Millennium II Multi Channel Transmitter ...

Page 2: ......

Page 3: ...e product nameplate and to all instructions provided in this manual prior to installation operation and maintenance Installing operating or maintaining a Net Safety Product improperly could lead to serious injury or death from explosion or exposure to dangerous substances Comply with all information on the product in this manual and in any local and national codes that apply to the product Do not ...

Page 4: ...e Net Safety makes no warranties expressed or implied including implied warranties of merchantability and fitness for a particular purpose with respect to this manual and in no event shall Net Safety be liable for any incidental punitive special or consequential damages including but not limited to loss of production loss of profits loss of revenue or use and costs incurred including without limit...

Page 5: ...r s sole expense and Seller shall not be obligated to pay any costs or charges incurred by Buyer or any other party except as may be agreed upon in writing in advance by Seller All costs of dismantling reinstallation freight and the time and expenses of Seller s personnel and representatives for site travel and diagnosis under this limited warranty clause shall be borne by Buyer unless accepted in...

Page 6: ......

Page 7: ...9 Remotely mounted sensors jumper configuration 8 2 4 10 Sensor and transmitter terminals 8 2 4 11 Remote reset 9 2 5 Sensor separation remote mounting of sensor 10 2 5 1 Wiring diagrams 11 2 6 Installation checklist 12 Section 3 Operation 13 3 1 Transmitter and faceplate description 13 3 1 1 Display 13 3 1 2 Status LED 13 3 1 3 Current loop measurement test jacks 14 3 1 4 Menu buttons and access ...

Page 8: ...registers 32 6 5 Transmitter output operation 33 6 6 Fault monitoring 33 6 7 Fault conditions 34 6 7 1 Transmitter fault conditions 34 6 7 2 Sensor fault conditions 35 Section 7 Maintenance 36 7 1 Periodic response check 36 7 2 Troubleshooting 36 7 3 Storage 36 7 4 Spare parts and accessories 37 Section 8 Electrostatic sensitive device 39 Section 9 Wire resistance table 40 Section 10 Specification...

Page 9: ...evision 09 June 2016 Tableof Contents III 11 3 FC Models 43 11 3 1 North American 43 11 3 2 IECEx aluminum 43 11 3 3 IECEx stainless 43 Section 12 Ordering information 44 12 1 M21 single channel transmitter 44 12 2 M22 dual channel transmitter 45 ...

Page 10: ......

Page 11: ...ontacting the Technical Support department at 1 866 347 3427 toll free or Safety CSC Emerson com 1 3 Return of material To expedite the return of this product proper communication between the customer and the factory is important Before returning a product call 1 866 347 3427 toll free or e mail Safety CSC Emerson com for a Return Material Authorization RMA number On the return of the equipment in...

Page 12: ...s M20 1 2 NPT and 1 2 BSP threads also available 2 3 Mounting Ensure transmitter and sensor are securely mounted as per local regulations The transmitter has mounting holes to allow mounting to a wall or pole as desired Mounting kit hardware is required when mounting the transmitter a pole Contact your local Net Safety representative for detailed information on the pole mounting kits The transmitt...

Page 13: ... Section 8 for more information When the transmitter enclosure is mounted in different orientations B C and D as outlined in Figure 2 2 the electronics module will need to be rotated to ensure the display can be easily read The electronics module consists of the relay board faceplate Display CPU assembly and main terminal board To rotate the electronics module follow these instructions 1 Turn off ...

Page 14: ...ure cover Figure 2 3 Rotating electronics module 2 4 Wiring 2 4 1 General requirements Failure to follow these installation guidelines could result in death or serious injury Ensure that only qualified personnel perform the installation Electrical shock could cause death or serious injury Use extreme caution when making contact with the leads and terminals Do not open the transmitter sensor or jun...

Page 15: ...o 2000 feet 600 meters using 16 AWG wires Modbus RS 485 connection 2 wire mode multipoint serial line available Up to 247 addresses allowed When developing a RS 485 chain of devices the last device in the chain requires an end of line termination resistor 120 Ohms 2 4 2 Terminal connection When connecting cable wires use a small screwdriver to gently press down and hold the spring connector open I...

Page 16: ...cted equipment The shield must be connected to a suitable ground sink as specified in the instrument manual in order to protect the system from electrical disturbances In general communication cables and power cables should not run in parallel for any significant length and should not be carried in the same cable tray Through inductance high currents in power cables can induce significant noise in...

Page 17: ...guration 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 For non isolated current output ensure pins 3 2 at JP3 JP4 locati...

Page 18: ... installed over the pins Jumpers and pins are located on the main terminal board near the sensor terminals JP1 is for channel 1 and JP2 is for channel 2 Refer to Figure 2 6 Figure 2 6 Separation jumper positions When separating sensor and transmitter install JP1 and JP2 over pins 2 4 10 Sensor and transmitter terminals Before wiring ensure power to the unit is switched off Connect the sensor wires...

Page 19: ...gB COM Power Black Com 4 20 CH1 Channel 1 current loop output Green Earth ground ISO CH1 Vdc isolated 4 20mA power channel 1 4 20 CH2 Current loop output channel 2 ISO CH2 Vdc isolated 4 20mA power channel 2 Figure 2 7 Sensor wiring and terminal connections 2 4 11 Remote reset If the alarm relays are configured for latching operation it may be desirable to reset latched alarms from a remote locati...

Page 20: ...idelines When sensors are being mounted remotely consult the multi purpose junction box manual MAN 0081 for wiring instructions Always ensure that the transmitter is supplying 10 5 32 VDC across the sensor power terminals VDC and COM of Net Safety junction box JB MPD A S The maximum distance between the sensor and transmitter is limited by the resistance of the connecting wiring which is a functio...

Page 21: ...vision 09 June 2016 Installation 11 2 5 1 Wiring diagrams Wiring drawings show general ways in wiring the system for analog signal output Consult qualified personnel on specific wiring requirements Figure 2 10 Non isolated terminal connection ...

Page 22: ...not obstructed transmitter and sensor are accessible and target gas is not inhibited from reaching the sensor Ensure adherence to applicable local guidelines and requirements on wiring and sealing of equipment in hazardous and non hazardous areas Ensure that proper shielding and grounding practices are adhered to and local codes are being followed Check system operational voltage and conditions en...

Page 23: ...h individual channel and the various options offered The display has a wide temperature rating and will operate well in lowly lit conditions In order to extend the life of the display a screen saver is enabled if the menu is not in use To exit the screen saver mode move the magnet close to any of the three Reed switch locations 8 o clock 6 o clock or 4 o clock position 3 1 2 Status LED The Status ...

Page 24: ... also be done via an attached magnet and Reed switches The Reed switches are located in the 8 o clock 6 o clock and 4 o clock positions on the face plate and indicated by horse shoe shape print magnets To select a Reed switch place and hold the magnet close to the transmitter enclosure at 8 6 or 4 o clock position Menu buttons and reed switches provide the same functions The term switch is used th...

Page 25: ... menu button 1 or 2 The same function is provided using the magnet to select Reed switch 1 indicated by printed magnet in the 8 o clock position on the faceplate or Reed switch 2 indicated by printed magnet in the 6 o clock position on the faceplate 1 Enter the main menu either intrusive or non intrusive using the magnet by selecting activating any button then select yes by using switch 1 2 The me...

Page 26: ...nels Set Alarm Level Set Relay Option Relay Assignment Alarm Mode Setting 1 2 1 2 1 2 1 2 1 2 Select Display Language Modbus Setup Setup Current Date Setup Current Time View Events Log Manual Reset 1 2 1 2 1 2 1 2 1 2 Selftest Relay Sensor Upper Limit Range Select Gas Type Cal Gas Value Serial Number and Firmware Version Exit 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 ...

Page 27: ...is option enables the channel low and high alarm levels to be viewed and set up Alarm levels points for each channel are user determined Alarm Point 1 and Point 2 for channel 1 does not relate to Alarm Point 1 and Point 2 for channel 2 The channel 2 selection is only available on M22 models 1 Enter the main menu by selecting activating any key to get the enter main menu prompt then activate switch...

Page 28: ...Activate the enter key switch 3 to enter the option The sub menu options are Fault relay Alarm relay 1 Alarm relay 2 Alarm relay 3 4 Activate the down key switch 2 or up key switch 1 to highlight configurable Alarm relays Alarm relay 1 Alarm relay 2 Alarm relay 3 5 Activate the enter key switch 3 to configure the desired Alarm relay 6 Norm Energized or Norm De Energized will be highlighted at the ...

Page 29: ...rm points levels ALARM RELAY 2 RL2 with channel and Alarm points levels ALARM RELAY 3 RL3 with channel and Alarm points levels CH1 POINT 1 Alarm level 1 POINT 2 Alarm level 2 RL1 CH1 Point 1 Point 2 Disabled RL2 CH1 Point 1 Point 2 Disabled RL3 CH1 Point 1 Point 2 Disabled CH2 POINT 1 Alarm level 1 POINT 2 Alarm level 2 RL1 CH2 Point 1 Point 2 Disabled RL2 CH2 Point 1 Point 2 Disabled RL3 CH2 Poin...

Page 30: ... language English will be displayed 4 Locate other languages by activating the enter key switch 3 5 Once the desired language is displayed select Exit at each menu stage sub menu and main menu 4 10 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 Pa...

Page 31: ...After desired setting are made navigate to OK and activate the enter key switch 3 to confirm To exit main menu select Exit at each menu stage sub menu and main menu 4 12 Setup current time This option allows you to set the current time for event logging The default time is in Mountain Time 1 Enter the main menu by activating any key to get the enter main menu prompt then activate switch 1 to selec...

Page 32: ...mmunication Err CH1 or CH2 High Level Alarm High Alarm CH1 or CH2 Low Level Alarm Low Alarm CH1 or CH2 Calibration Completed Cal Complete CH1 or CH2 Calibration Zero Failed Cal Zero fail CH1 or CH2 Calibration Span Fail Cal Span Fail CH1 or CH2 Calibration Aborted Cal Abort CH1 or CH2 Sensor Fail Sensor Fail CH1 or CH2 Channel Enabled Enabled CH1 or CH2 Channel Disabled Disabled CH1 or CH2 4 14 Ma...

Page 33: ...ct Exit 4 16 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 1 Enter the main menu by activating any key to get the enter main menu prompt then activate switch 1 to select yes 2 Activate the up key switch 1 or down key switch 2 until Sensor Upper Limi...

Page 34: ...xample 0 5 0 indicates a calibration gas value of 50 span 4 Highlight the required channel with calibration gas value using the navigation keys switch1 or switch 2 then select using switch 3 Switch 1 is used to increase change a value in each numeric group while switch 2 is used to cycle across the numeric groups 5 To exit select Exit at each menu stage sub menu and main menu 4 19 Serial number an...

Page 35: ... place inject calibration gas at a rate of 0 5 1 0 liter per minute Ensure the transmitter is functioning properly as indicated by the status LED and current output 1 Enter the main menu by selecting activating any key to get the enter main menu prompt then activate switch 1 to select yes 2 When Calibrate Sensor is displayed activate the enter key switch 3 3 When Calibrate Sensor 1 is highlighted ...

Page 36: ...elected 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 If Zero calibration is needed at step 7 above select Zero using switch 3 ...

Page 37: ...50 span gas CH 1 Spanning LEL ppm reading Remove Calibration Gas Calibration Complete Note Some sensor types can be calibrated with 10 to 60 span calibration gas refer to the applicable sensor manual Span Failed Perform a manual reset and repeat calibration procedure Purge calibration lines with clean air from canister then remove air canister YES No Z SPAN Zero Full Calibration Zero Calibration Z...

Page 38: ...3 3 mA Very fast Off Normal state Normal state Spanning is complete user asked to remove calibration gas 3 6 mA Off Solid Normal state Normal state Displayed for four 4 seconds once gas concentration drops to 3 full scale after user asked to remove calibration gas 3 6 mA Off Solid Normal state Normal state Signal was too unstable to acquire an accurate zero after ninety 90 seconds 3 0 3 3 Solid So...

Page 39: ... exploit the full functionality of the Millennium II Transmitter The HART communication option is only available with the single channel version of the Millennium II Transmitter The Millennium II Transmitter is a generic device that will work with other universal communication devices The HART Communicator may be connected to the single channel Analog HART model Millennium II Transmitter via the H...

Page 40: ...reach the programmed alarm points set in the transmitter The alarm relays can be programmed to change states on alarm point 1 or alarm point 2 for either channel They can also be programmed to be energized or de energized under normal conditions and then either latching or non latching 6 3 2 Fault relay Millennium II transmitters and sensors complete continual checks for situations that may preven...

Page 41: ...ode immediate action should be taken to determine the source and correct the fault condition The fault relay output is not commonly used to imitate an automatic shutdown The fault output indicates a potential problem with the transmitter not an alarm condition 6 4 RS 485 Modbus RTU Optional Optional RS 485 Modbus RTU protocol is available The tables on the following pages give the detailed Modbus ...

Page 42: ...alize Quick calibration channel 1 to 2 X X 40092 Initialize Normal Calibration channel 1 to 2 X X NOTE Alarm points can be set up through Modbus registers 40093 to 40096 40093 Channel 1 high alarm limit X X 40094 Channel 1 low alarm limit X X 40095 Channel 2 high alarm limit X X 40096 Channel 2 low alarm limit X X 40101 Reset latch relays X RFU Reserved for future use The transmitter Status regist...

Page 43: ... state for 5 seconds normal state for 55 seconds Normal state Fault relay Fault state means that the relay is in the de energized state Normal state means that the relay is in the energized state LED indications Flash rates are outlined in the following table Flash description On Off Slow 50 milliseconds 1 second Fast 250 milliseconds 250 milliseconds Very fast 50 milliseconds 50 milliseconds Alar...

Page 44: ...relay will not provide an output Fault conditions provided by an instrumentation device are critical indicators that the device is not operating as expected therefore when a fault condition is present immediate attention to that fault condition is required Net Safety strongly recommends that the 2 5 mA analog fault condition and fault relay if used be monitored in conjunction with alarm levels on ...

Page 45: ...ST332 ST340 ST320 ST330 ST341 ST360 Zero calibration failure P P P P P Span calibration failure P P P P P P P P P Low temperature P P P P High temperature P P P P Low power P P P P P High power P P P P P Replace sensor P P P P P P P P P Zero drift P P P P P Signal invalid P Over range P P P P P Memory fault P P P P P P P P P Power supply fault P P P P P Sensor end of life P P P P P P Sensor weak s...

Page 46: ...of full scale An additional consideration is the accuracy tolerance of the calibration gas which may be or a few percent If the calibration gas is or 10 of full scale then the reading may be from 10 7 mA 42 of full scale to 13 3 mA 58 of full scale 7 2 Troubleshooting Response to the input should be checked and if necessary calibration should be performed whenever the accuracy of this check is not...

Page 47: ...el transmitter w analog digital Modbus outputs TX M21 AD Single channel transmitter w analog mech relay digital Modbus output TX M21 ARD Single channel transmitter w analog Hart communication output TX M21 AH Single channel transmitter w analog Hart communication output for wireless capable transmitters TX M21 AH FC Single channel transmitter w analog Hart communication relay output TX M21 AHR Sin...

Page 48: ...Maintenance Reference Manual June 2016 MAN 0076 Revision 09 38 Maintenance Description Part Number 3 Pipe Mounting kit All Millennium II ECO SENSE Gas Detectors stainless steel UN MK 33 ...

Page 49: ... not always immediate performance may be marginal or seemingly normal for an indefinite period of time followed by a sudden failure To eliminate potential ESD damage review the following guidelines Handle boards by the sides taking care not to touch electronic components Wear grounded wrist or foot straps ESD shoes or heel grounders to dissipate unwanted static energy Prior to handling boards disp...

Page 50: ...03 3 16 1500 457 2 15 20 9 58 6 02 3 79 1750 533 4 17 80 11 20 7 03 4 42 2000 609 6 20 30 12 80 8 03 5 05 2250 685 8 22 80 14 40 9 03 5 68 2500 762 25 40 16 00 10 00 6 31 3000 914 4 30 50 19 20 12 00 7 58 3500 1066 8 35 50 22 40 14 10 8 84 4000 1219 2 40 60 25 50 16 10 10 00 4500 1371 6 45 70 28 70 18 10 11 40 5000 1524 50 10 32 00 20 10 12 60 5500 1676 4 55 80 35 10 22 10 13 91 6000 1828 8 61 00 ...

Page 51: ...06 per EMC directive 2004 108 EC 10 2 Environmental 10 2 1 Operating temperature 67 F to 185 F 55 C to 85 C Stainless steel 58 F to 185 F 50 C to 85 C Stainless steel North American explosion proof certification 40 F to 185 F 40 C to 85 C Aluminum 10 2 2 Relative humidity 0 95 RH non condensing 10 2 3 Ingress protection IP66 Aluminum IP67 Stainless Steel IP64 with sensors Type 4X transmitter only ...

Page 52: ...Specifications Reference Manual June 2016 MAN 0076 Revision 09 42 Specifications 10 3 3 Weight Aluminum 5 5 lbs 2 5 kg Stainless Steel 7 0 lbs 3 2 kg 10 4 Warranty 3 years ...

Page 53: ...y IECEx FMG 12 0006X Stainless Steel IP 67 controller only IEC 60079 0 2007 10 IEC 60079 1 2007 04 11 3 FC Models 11 3 1 North American Class I Division 1 Groups BCD T5 Class I Zone 1 AEx Ex d IIB H2 T5 50 C Ta 85 C NEMA Type 4X IP67 transmitter only CSA C22 2 No 152 2006 11 3 2 IECEx aluminum Ex d IIB H2 T5 Gb 40 C Ta 85 C IP66 IECEx DNV 12 0014 11 3 3 IECEx stainless Ex d IIB H2 T5 Gb 55 C Ta 85...

Page 54: ...mitter Output Description A Analog Output AD Analog and Digital RS485 Modbus RTU Protocol Outputs AH Analog and HART Protocol Outputs AHR Analog HART Protocol and Relay Outputs AR Analog and Relay Outputs ARD Analog Relay and Digital RS485 Modbus RTU Protocol Outputs Enclosure Description A Aluminum S Stainless Steel Wireless Description _ Not Required FC Wireless Ready THUM Capable Used Only With...

Page 55: ...nnel transmitter Model Description M22 Millennium II Dual Channel Transmitter Output Description A Analog Output AD Analog and Digital RS485 Modbus RTU Protocol Outputs AR Analog and Relay Outputs ARD Analog Relay and Digital RS485 Modbus RTU Protocol Outputs Enclosure Description A Aluminum S Stainless Steel ...

Page 56: ...Private Limited 1 Pandan Crescent Singapore 128461 Republic of Singapore T 65 6 777 8211 F 65 6 777 0947 SAFETY CSC Emerson com 2016 Emerson Process Management All rights reserved The Emerson logo is a trademark and service mark of Emerson Electric Co Rosemount is a mark of one of the Emerson Process Management family of companies All other marks are property of their respective owners The content...

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