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Instruction Manual 

for 

Monroe Electronics, Inc. 

 

Multi-Point Fieldmeter and  

Alarm System 

 

Model 177A 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Specifications subject to change without notice. 

P/N 0340184 

122216 

Firmware v 1.12 

Software v1.05

 

 
 
 

 

 

100 Housel Ave 

 PO Box 535 

 Lyndonville NY 14098                                                  585-765-2254 

 fax: 585-765-9330 

monroe-electronics.com 

Summary of Contents for 177A

Page 1: ...ulti Point Fieldmeter and Alarm System Model 177A Specifications subject to change without notice P N 0340184 122216 Firmware v 1 12 Software v1 05 100 Housel Ave PO Box 535 Lyndonville NY 14098 585 7...

Page 2: ...DULE Page 29 Section 12 UPGRADING THE FIRMWARE Page 32 APPENDIX I PROBE CONNECTION OPTIONS APPENDIX II INTRINSIC SAFETY BARRIERS APPENDIX III RS 485 CONNECTION DATA APPENDIX IV MODBUS PROTOCOL APPLICA...

Page 3: ...repairing or replacing the non conforming goods and or defective work and in accordance with the foregoing Monroe Electronics shall not be liable for any other damages either direct or consequential...

Page 4: ...n surpass a preset value beyond which there may be a danger to personnel or possible disruption or destruction to the process or product an initial warning is triggered and the process is allowed to c...

Page 5: ...ensions 1 x 19 x 11 inches 4 45x 48 26 x 27 9 cm Mounts in a standard 19 rack Weight 6 lbs Relay Contacts Switching load 30W 62 5VA MAX switching voltage 110VDC 125VAC 0 3A rms suggested limit 30VDC 1...

Page 6: ...this document to help understand or minimize the effects of these factors and to otherwise correctly interpret electric field measurements Fieldmeters measure the electrostatic field voltage per unit...

Page 7: ...in it Figure 3 Insulating Sheet Electric Field Demo Top View The field over the hole will not be zero even though there is no charge directly in front of the probe head This is because the electric f...

Page 8: ...of one inch because its large grounded face helps to create a uniform electric field near the aperture of the probe The Model 1036F probe is significantly smaller than the Model 1036E probe Unless a...

Page 9: ...are available for use with the 177A Each probe is marked with a number stamped on the gradient cap to indicate its sensitivity see Table 1 As a default each 177A is shipped with its firmware set to in...

Page 10: ...d to these relays and indicator LEDs via screw terminals located on the rear panel of the instrument and assigned as specified on the instruments cover Connections should be made using the following d...

Page 11: ...charge on the target surface This A C signal conditioned by a preamplifier filter and signal amplifier is fed into a phase sensitive demodulator This signal from this demodulator feeds an integrating...

Page 12: ...ical probe applications include static level safety monitoring in explosive environments and static level quality monitoring in sensitive machine areas 1036E 1036F Fieldmeter Probe IS I 1 CD T5 Ta 80...

Page 13: ...ure in the face Model 1036E is provided with two mounting flanges The case should be electrically connected to ground The gradient cap containing the aperture of the probe is a reference surface with...

Page 14: ...e available from Monroe in lengths up to 1000 feet which is the maximum permissible length These extension cables may be ordered in any length up to 1000 feet by part number 1036 12 nnnn where nnnn is...

Page 15: ...al The materials of which these probe elements are made were very carefully chosen to minimize contact potential Any foreign matter which will cause relative electrical activity when combined with rel...

Page 16: ...reason for standardization of type 1036 probes is to assure interchangeability of probes The procedure is not suggested as routine but is presented here in the event it becomes necessary to re standa...

Page 17: ...6 5 3 4 11 2 7 1036E Probe Housing Bulk Cable is Belden 8777 NOTES 1 Place Teflon tubing over drain wires 2 Place shrink tubing over shielded pairs 3 All shields to be isolated from each other Conn H...

Page 18: ...for Probe Standardization Full Scale Range Maximum Surface Voltage I Probe II Probe to Surface Spacing inches cm 20 0 kV 20 kV cm 5 0 4 in 1 0 cm 10 kV cm 4 0 8 in 2 0 cm 10 kV in 6 2 0 in 5 1 cm 1 0...

Page 19: ...t for current levels may be connected to the optional 4 20mA pcb via screw terminals located on the rear panel of the instrument To 1036 Sensors 9 12 To 1036 Sensors 5 8 1036 Sensor 2 1036 Sensor 4 10...

Page 20: ...Press ENTER to accept changes during programming or to perform a function EXIT Press EXIT to escape the changes or exit the program mode Console LEDs POWER Green LED lights when power is applied to t...

Page 21: ...at condition until the problem is corrected and the instrument is manually reset by toggling the channel s ENA DIS button on the instrument console or via the pc program provided or by momentarily sho...

Page 22: ...n the pre set voltage warning level is reached Remains lit until voltage level drops below warning level non latching or until the condition corrected and the channel is reset Latching Red right LED L...

Page 23: ...tiple 177A s When probes are attached to common mountings from multiple 177A s they can interact and cause zero shifts and low frequency oscillations without synchronization of the modulators Setup Ma...

Page 24: ...tion the program icon will be displayed in a window Click on and drag the icon to your desktop to place a short cut there Close the window Programming via PC The software included with the 177A is des...

Page 25: ...etting The auto zero time out and level are the same for all 4 channels Disable Disables the channel display three dashes across display Enable Enables the channel display display is active with green...

Page 26: ...ogram 1 2 3 or 4 to store your program into permanent memory If program 1 2 3 or 4 is set as your active program those changes will also be applied Hardware Config Permits selection of the station uni...

Page 27: ...etting used under Connect Monitor The monitor screen enables you to observe the 177A console in real time It reads data from the 177A console and updates the screen at approximately 3 times per second...

Page 28: ...le alarm In Non Alarm mode channels can be set to enable disable only System Diagnostic Indicates if a system error exists Select to test the system If the System icon is blinking it may be due to one...

Page 29: ...mal box Select the decimal position to be written and then click the Set Decimal button The display should show the correct decimal point with associated zeros This only checks the functionality of th...

Page 30: ...he beginning of Section 9 to work your way through the programming sequences Refer to the Front Panel Program tree included on the CD provided To enter the programming mode via the front panel press t...

Page 31: ...iance is observed An external supply may be connected which would be used by all four channels The external supply must be less than 25 volts Output compliance of the is the external supply minus 5 vo...

Page 32: ...4 Remove the 4 phillips head screws from the tops of the mounting stand offs as shown below 5 Remove mating connector from 177A 22A 6 Align the electrical connector on the 177A 22A with J4 on the 177A...

Page 33: ...32 4_20_APPNOTE_060607 cdr 060607EPF...

Page 34: ...ware To check the version of your unit read the Channel 2 display at power up Note For the duration of the firmware upgrade approximately 6 minutes the instrument is not functional and the system is n...

Page 35: ...he download Diagram 4 If the unit is powered up in Load Program mode caused by a previously incomplete loading process due to power or user interruption and Update Firmware is selected on the Main scr...

Page 36: ...ropriate connector on the back of the instrument Although it is virtually impossible to err it is advisable to test the system on the bench in a confined area before permanently installing long cable...

Page 37: ...les factory or customer supplied and IS barriers see drawing 1036 10 SHT 2 of 3 Please refer to drawing 1036 10 SHT 2 of 3 This drawing shows wiring for one channel Generally all channels would be wir...

Page 38: ...37 Figure A I 1...

Page 39: ...38 Figure A I 2...

Page 40: ...39...

Page 41: ...40...

Page 42: ...41...

Page 43: ...8 1029 Fax 713 797 0105 Barrier requirements and recommended enclosures are shown in the tables below Number of Channels 1 2 4 6 8 10 12 14 16 Number of Barriers MTL 765 2 4 8 12 16 20 24 28 32 MTL 76...

Page 44: ...cation of Gases Vapors and Dusts for Electrical Equipment in Hazardous Classified Locations pamphlet NFPA 493 Intrinsically Safe Apparatus for Use in Division 1 Hazardous Locations pamphlet NFPA 325M...

Page 45: ...on ID RS 485 and Terminator setup Each 177A on the same RS 485 bus must have its own unique ID 1 255 This can be set via ME177A software or from the front panel Setup Baud rate is 9600 by default Setu...

Page 46: ...m USB COMi Adapter Connection to the 177A Locate the DB 9 connecter on the back of the unit connect the two wires to the 485 data as follows RS 485Bus 177A DB 9 Data Pin3 Data Pin2 For correct operati...

Page 47: ...Lo Front panel Lock Up SS System Setup Right bAu Baud rate Down IT Interface Type Right 232 RS 232 Down 485 FuL RS 485 Full duplex Enter Connection to the 177A Locate the DB 9 connecter on the back o...

Page 48: ...ust be 0 length low is 1 CoilAdrH is 0 CoilAdrL is as follows 0 Channel 1 Alarm red LED 1 Channel 2 Alarm red LED 2 Channel 3 Alarm red LED 3 Channel 4 Alarm red LED 4 Channel 1 Warning Amber LED 5 Ch...

Page 49: ...l to the received packet Unit Command CoilAdrH CoilAdrL New Value 0 crcH crcL 1 255 0x05 0 0 24 0 Off 0xff On Read Channel display read register From PC or PLC Unit Command RegAdrH RegAdrL LenH LenL c...

Page 50: ...o crcH crcL 01 Unit ID 03 Read channel command 02 two data bytes followed 00 data high byte 33 data low byte With the previous high byte 00 33 is the channel reading in hex Its decimal value is 51 If...

Page 51: ...ly acceptable practice once a fixed geometry is established Some guidelines are offered here During the standardization procedure these probes are configured as shown in Figure 15 with the face of the...

Page 52: ...good accuracy Tests performed in our laboratory produced the following Some conclusions may be drawn from the data shown in Figure 17 1 An F probe produces a reading about 12 high with no shroud at 1...

Page 53: ...dling Operations 53 II How Electrostatic Charge Builds Up On A Moving Web 54 Electrostatic Charging On A Web Converting Machine 54 Factors That Most Affect Contact And Frictional Charging 54 Locations...

Page 54: ...b Handling Operations This document provides the reader with a review of web static charging mechanisms web and machine factors most involved in static charging typical locations of web static chargin...

Page 55: ...erial Of the two materials the material with the lower work function gives up electrons to the other material and becomes positively charged The material with the higher work function takes electrons...

Page 56: ...etic rubber Orlon Saran Polyethylene Teflon Silicone rubber most negative Table IV 1 Triboelectric Series If only one surface has a significant electrical resistance while the other surface is a good...

Page 57: ...surfaces make contact that is more intimate and tend to cause more charging during separation Surface Layer Chemistry Affects how charging takes place when surfaces of differing work functions contact...

Page 58: ...contamination Web surface roughness and texture Any other object that the web touches such as turning bars splice board and the operator s hand can also cause charge transfer High electric fields tha...

Page 59: ...dentical contacts the charge that is transferred follows an exponential charging relationship versus time The web charge density then gradually approaches equilibrium at velocity V Figure II 2 Typical...

Page 60: ...drop to less than 10 If possible avoid using pinch drive rollers If they must be used minimize the pinch roller pressure and tackiness Reduce machine speed and web tension as much as practical Increa...

Page 61: ...but the high voltage emitter elements are usually needle points or thin wires Operating details vary with different designs but as with passive ionizers they rely on the electric field from the web to...

Page 62: ...ontinuous Static Control The keys to continuous static control are 1 Correct determination of critical machine areas to 2 monitor continuously Then 3 implement static control devices and continuous el...

Page 63: ...Effect of Probe Type on Fieldmeter Readings 66 Investigation of High Electric Field Problem Areas w Handheld Fieldmeters68 Effect of Operator Presence on Fieldmeter Readings 69 Taking Handheld Fieldm...

Page 64: ...ly caused event occurs Changing conditions can alter the amount of static charge accumulation so although static is under control today it may not be under control tomorrow The keys to continuous stat...

Page 65: ...is set up between the grounded surface and the charged surface some distance D away Fieldmeters are calibrated at a particular distance such as V inch or V cm Therefore using the manufacturer s calibr...

Page 66: ...d by measuring the electric field of an insulating sheet with a hole in it Figure II 3 Insulating Sheet Electric Field Demo Top View The field over the hole will not be zero even though there is no ch...

Page 67: ...ctric field The situation is more complex for the Monroe Electronics Models 257D and 177A fieldmeters which both use the Model 1036 probes 3 The Model 1036 probes are primarily used for permanent inst...

Page 68: ...Figure II 5 Field Lines Straight to 1036E Probe Figure II 6 Field Lines Converging to 1036F Probe Convergent field lines 1036F Probe Charged Surface 1 Straight field lines 1036E Probe Charged Surface...

Page 69: ...manufactures portable fieldmeters that are capable of easily and accurately determining high field problem areas Two fieldmeters that are recommended for surveying web converting machines are the Mon...

Page 70: ...cessary guidance Figure II 7 Minimum Distances of Probe to Grounded Rollers and Surfaces Notes on using the simple net charge static survey decision chart Decision Chart Page 1 All insulating material...

Page 71: ...dio tuned off station in an unused frequency band The static heard over the speaker or headphones will increase near the ESD locations and may produce a discrete popping noise The radio picks up the s...

Page 72: ...as web ever received or will receive CDT in this process will web be rotogravure printed or go through pinch rollers to pg2 no no finished web product conductive Stop yes no no no web dielectric break...

Page 73: ...Static Survey See Section YY Location Use of 1036E Intrinsically Safe Fieldmeter Probes yes listen for static fuzz or popping while walking along machine with portable AM radio tuned off station yes N...

Page 74: ...g section at 1 probe to web spacing take readings in free span of web Note 1 side of probe at least 4 from closest ground or charged insulator Note 4 span location with no web flutter or wobble Note 5...

Page 75: ...e below the 25 C m2 required for a guaranteed discharge from the web Thus the 5000 Volts Rule is equivalent to keeping the surface charge density below one tenth the discharge value and The 5000 Volts...

Page 76: ...Brush Discharges on Flexible Intermediate Bulk Containers Compounds and Coated Materials Electrostatics 87 Inst Phys Confr Series No 85 London 1987 6 Vosteen W E Monroe Electronics Inc A Review of Cu...

Page 77: ...etermining locations for continuous static monitoring in hazardous flammable areas 77 Continuous tracking of fields in high risk machine product performance areas 77 II Using Models 1036E and 1036F El...

Page 78: ...g wires or straps should then be electrically grounded on both sides of the bonding run to prevent electrical isolation of conductive components in case a bond breaks Proper grounding and bonding need...

Page 79: ...after the web roller just prior to the hazardous operation roller Additional devices should also be installed after the hazardous operation roller and after each drying and turning roller in the hazar...

Page 80: ...r is contained in its operating manual This information will not be repeated within this application note II Using Models 1036E and 1036F Electrostatic Fieldmeter Probes General Models 1036E and 1036F...

Page 81: ...y recommended that the probe be mounted looking downward in order to minimize the probability of contaminants entering the aperture in the face Model 1036E is provided with two mounting flanges that a...

Page 82: ...etails including wiring information Purging Any contamination present in the probe or near the measurement will have an adverse affect on performance When insulative particulate or liquid becomes char...

Page 83: ...ng a plastic squeeze bottle 7 through the aperture until no dirt or dust may be seen The probe should then be allowed to drain and dry thoroughly A 15 minute bake out at 75 C is recommended to remove...

Page 84: ...a hole in its center just large enough to provide clearance around the probe so that the probe does not make contact with the plate A calibrating voltage is applied to the gradient plate of the fixtu...

Page 85: ...ents for Class I Division 1 Groups C and D hazardous locations when installed in accordance with the appropriate Monroe Electronics Inc control drawings To comply approved safety barriers must be used...

Page 86: ...mplifier filter and signal amplifier is fed into a phase sensitive demodulator This signal from this demodulator feeds an integrating amplifier A fraction of the integrator s output signal is fed back...

Page 87: ...ment Techniques Using Monroe Electronics Model 1036 Probes www monroe electronics com esd_appntspdf apne 0003 pdf WILLIAM E VOSTEEN Monroe Electronics Inc A Review of Current Electrostatic Measurement...

Page 88: ...TR12 24 01 1998 IEC 79 10 Mod Recommended Practice for Classification of Locations for Electrical Installations Classified as Class I Zone 0 Zone 1 or Zone 2 ISA PO Box 12277 67 Alexander Drive Resear...

Page 89: ...mer supplied no Intrinsic Safety considerations This option does not apply to 1036F probes which have permanently attached cables Wiring connections for customer installed 1036E probe cables for use i...

Page 90: ...y attached Hard wiring allows the cables to be pulled through conduit without interference associated with connectors Wiring details for customer installed 1036E probe cables are shown in Figure V 1 W...

Page 91: ...ve and discard the factory supplied usually ten foot cable from the probe Model 1036E only and mount the probe housing at the measurement location Cut the female DB9 connector plug off the extension c...

Page 92: ...3 4 11 2 7 1036E Probe Housing Bulk Cable is Belden 8777 NOTES 1 Place Teflon tubing over drain wires 2 Place shrink tubing over shielded pairs 3 All shields to be isolated from each other Conn Housin...

Page 93: ...s Conn Plug DB9 Male Conn Housing DB9 Die cast ME P N 9232278 9230070 NOTES 1 Place Teflon tubing over drain wires 2 Place shrink tubing over shielded pairs 3 All shields to be isolated from each othe...

Page 94: ...rriers must be used as shown in the drawings to comply Copies of the Factory Mutual Research Corporation report 1Q3A9 AX specific to these probes are available on request from Monroe Electronics Inc 1...

Page 95: ...T 24 1 1 2 2 MT 32 1 2 2 Table VI 1 Notes for MTL Systems Enclosures include barrier mounting hardware tagging strips etc Labeled wiring ducts are included with MT 32 Listed enclosures are glass fille...

Page 96: ...00 2 4 8 12 16 20 24 28 32 9002 22 240 160 00 2 4 8 12 16 20 24 28 32 Recommended Enclosures S 806 NF 12 1 1 S 1412 NF 25 1 1 S 1412 NF 50 1 1 1 S24H20BLP 80 1 1 Table VI 2 Notes for R Stahl Systems...

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