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SPM Single Point Monitor

SPM Technical Handbook

A-1

A Bi-Directional

Communications Protocol

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Summary of Contents for SPM

Page 1: ...SPM Single Point Monitor Technical Handbook TOC Operation Installation Maintenance Specifications Options Bi Directional Communications Warranty Statement ...

Page 2: ...e post 6 Vent 7 Tape path 8 Main power switch 9 Green system status LED 10 Alarm test key 11 Alarm reset key 12 Red system status LED 13 Red Relay disable LED 14 Relay disable key 15 Sample inlet port 16 Alarm lamp 17 Detector head 18 Tape load lever 19 Digital display 20 Cover screw 21 Retaining ring 22 Collar fixing screw 23 Door thumbscrew 24 Exhaust port 25 Capstan assembly 26 Guide post 27 Ta...

Page 3: ... 4 1 7 4 Alarm Simulation Key Entries 1 4 1 7 5 Alarm Simulation Reporting 1 4 1 8 Verifying System Response 1 5 1 8 1 Improper System Response 1 5 1 8 2 Open Tape Load Lever Fault 1 5 1 9 Gas Concentration Conditions 1 6 1 9 1 Gas Condition Reporting 1 6 1 10 Instrument Fault Condition 1 6 1 11 Disabling the External Alarm Relay Contact 1 6 2 Installation 2 1 Wall Mounting 2 2 2 2 Connecting the ...

Page 4: ... 6 Caring for Chemcassettes 3 3 3 7 Removing a Used Chemcassette 3 4 3 8 Troubleshooting Guide 3 4 4 Specifications 4 1 General Instrument Specifications 4 2 4 2 4 20 mA Output Signal 4 2 4 3 Verifying the 4 20 mA Output Signal 4 2 4 4 Output Signals 4 3 4 5 Status Indicators 4 6 4 6 Display Messages 4 6 4 7 Fault Codes 4 6 4 8 Output Terminal Status 4 7 4 9 Gas Response Specifications 4 8 4 10 Sa...

Page 5: ... 5 4 ChemKey Option 5 8 5 4 1 ChemKey Components 5 8 5 4 2 SPM Legend 71 5 8 5 4 3 Gas Symbol Name 72 5 8 5 4 4 Alarm Levels 73 5 8 5 4 5 Family Chemcassettes 5 9 5 4 6 Sample Lines 5 9 5 4 7 ChemKey Operation 5 9 5 4 8 Changing Gases 5 9 5 4 9 ChemKey Faults 5 9 5 5 RS 422 Option 5 9 5 5 1 Z Purge SPM Connection 5 10 5 5 2 Pin Designations 5 10 5 5 3 General System Wiring 5 10 5 5 4 How to Set Da...

Page 6: ... 5 11 2 Operation 5 15 5 12 Non latching Alarm Option 5 16 5 13 Remote Trigger Option 5 16 5 14 Modification for Diisocyanate Monitoring in High Humidities 5 16 A Bi Directional Communications Protocol A 1 Introduction A 2 A 1 1 Overview A 2 A 1 2 Communication Port A 2 A 1 4 Communication Port Timeout A 3 A 1 5 Protocol Specifics A 3 Data and Packets A 3 Check Character Checksum A 4 ACK NAK Hands...

Page 7: ...SPM Single Point Monitor SPM Technical Handbook TOC 5 B Warranty Statement Chemcassette Device Warranty Statement B 2 Chemcassette Warranty B 3 ...

Page 8: ...SPM Single Point Monitor Midas Technical Handbook 1 1 1 Operation ...

Page 9: ...es there may be limits on the length of sample lines See Section 4 10 for more information Caution The SPM should not be operated in direct sunlight or at elevated temperatures unless equipped with appropriate options See Section 4 1 for proper operating temperature range Caution Except for instrument maintenance procedures covered in this manual all repair and service work must be referred to qua...

Page 10: ...l cover 27 6 Rotate the assembled take up reel 27 clockwise to take up any slack 7 Install the Chemcassette center retaining screw 8 Close the tape load lever 18 The SPM will automatically begin monitoring 1 6 Monitoring The SPM is monitoring whenever a Chemcassette 4 is in place the tape load lever 18 is closed and the power switch 8 on The green system status LED 9 will also be lighted 1 7 Simul...

Page 11: ... the same way Re enter the alarm simulation routine by pressing and holding the alarm reset key 11 until the red system status LED 12 begins flashing When a simulation is concluded the relay contacts will reset The 4 20 mA signal and displayed value will stay at the simulated level When the current sample period is completed the 4 20 mA signal and displayed value will be updated to indicate the sa...

Page 12: ...ms The 4 20 mA circuit will output a signal of 10 1 mA to 13 2 mA Note Alarmrelayswillnotactivateduringtheverification routine 8 Open the tape load lever 18 and press alarm reset 11 Replace the Chemcassette 4 and re thread the tape 7 After pressing the alarm reset button the alarm lamp 16 does not extinguish Wait until monitoring is resumed then press the alarm reset button again 9 Close the tape ...

Page 13: ...ll show last sampled concentration In simulated gas condition the display will normally reset to 0 and the 4 20 mAoutput returns to 4 mA at the end of the sample period unless a concentration is detected 3 When unit detects an above full scale condition the display will show xxx ppb ppm e g AsH3 above full scale is 150 ppb Cl2 above full scale is 1 50 ppm 1 10 Instrument Fault Condition The SPM re...

Page 14: ...sable 14 a second time The red relay disable LED 13 will turn off to indicate that all the relay contacts are operational The instrument fault relay will also reset Note While the alarm relays are disabled the instrument fault relay cannot be activated in the event that a fault occurs while in this mode ...

Page 15: ...SPM Single Point Monitor SPM Technical Handbook 2 1 2 Installation ...

Page 16: ... the SPM prepare wall fasteners as indicated in the illustration Leave screw heads loose for tightening after the unit has been positioned Attach and tighten the brackets to the threaded inserts 42 on rear face of the enclosure Slide the mounts over the screw heads and then fasten securely to the wall 2 2 Connecting the Power Cord The SPM is supplied with an IEC power line connector that plugs int...

Page 17: ... retainer ring a second wrench must be used to hold the base of fitting stationary during loosening and tightening Insert the sample tubing into the sample inlet fitting 15 To insert tubing 1 Loosen the sample fitting by turning the fitting counterclockwise 2 Insert tubing until the tubing is firmly seated against the fitting body 3 Tighten the fitting by turning the fitting clockwise until finger...

Page 18: ...assette advancement Additional parts are required Please contact Honeywell Analytics for application assistance 2 4 SPM Output Connections The gas alarm relays instrument fault relay and 4 20 mA output contacts are wired to a 14 pin circular connector 3 The pin designations are as listed in Section 2 4 1 2 4 1 Output Pin Designations Pin Designation Conditions A Instrument Fault Normally Open B In...

Page 19: ...r 30 must always remain connected to each other During disassembly and reassembly the connection between the cover 29 and the collar 30 must be secured by at least three cover screws 20 To open the hinged collar 30 from the SPM body 31 you must remove the collar fixing screws 22 one at a time Observe that the collar fixing screws 22 are mounted behind the cover screws 20 In order to reach each col...

Page 20: ...SPM Single Point Monitor Midas Technical Handbook 3 1 3 Maintenance ...

Page 21: ...cated inside center area of cover collar below and partially behind printed circuit board PCB See illustration on Page 5 5 3 Remove the three screws and six fiber washers securing the PCB Note location of fiber washers for re assembly 4 Leave all cables connected except J 11 4 pin and J 3 10 pin located on top right of component side rear view 5 Carefully lift outward on PCB to locate J 11 also lo...

Page 22: ...P extended play 30 day or XP longer life up to three months Chemcassette See Section 4 9 for Chemcassette part numbers Under normal conditions Chemcassettes have a shelf life of approximately three months for standard and 1 year for XP They should be stored in a cool atmosphere and kept out of direct sunlight Most Chemcassette detection systems will maintain optimum sensitivity when stored at room...

Page 23: ...ollowing installation you will need to verify power connection The following actions should be taken to isolate the cause of the system malfunction or failure to activate 1 Check to make sure that the green system status LED 9 is lighted If not check the instrument power source 2 and the fuse 33 2 Check that the front panel power switch 8 is pressed up 3 Check Chemcassette An instrument fault FAUL...

Page 24: ...SPM Single Point Monitor Midas Technical Handbook 4 1 4 Specifications ...

Page 25: ...40 C 32 to 104 F Temperature compensating options available Maximum sample draw against vacuum 1 in Hg 4 2 4 20 mA Output Signal The 4 20 mA output on the SPM is always active during monitoring It is updated at the end of each analysis period as a result the signal sent to the strip chart recorder or other equipment is delayed by one analysis period The 4 20 mA output is held at the last reported ...

Page 26: ...30 ppb Chlorine XP Cl2 0 ppm 0 05 ppm 050 ppm 1 00 ppm 1 50 ppm Chlorine XP Cl2 Low Level 0 ppb 4 ppb 20 ppb 40 ppb 60 ppb Chlorine Dioxide ClO2 0 ppb 11 ppb 100 ppb 200 ppb 300 ppb Chlorine Dioxide ClO2 on F2 Oxidizer CC 0 ppb 31 ppb 100 ppb 200 ppb 300 ppb Diborane B2 H6 0 ppb 31 ppb 100 ppb 200 ppb 300 ppb Diborane XP B2 H6 0 ppb 11 ppb 100 ppb 200 ppb 300 ppb Dimethyl Amine DMA 0 ppm 1 0 ppm 5...

Page 27: ...es outside North America Contact HA for eligibility information Available in ChemKey only Hydrogen Iodide HI 0 ppm 0 3 ppm 3 0 ppm 6 0 ppm 9 0 ppm Hydrogen Peroxide H2 O2 0 ppm 0 1 ppm 1 0 ppm 2 0 ppm 3 0 ppm Hydrogen Selenide H2 Se 0 ppb 20 ppb 50 ppb 100 ppb 150 ppb Hydrogen Selenide XP H2 Se 0 ppb 20 ppb 50 ppb 100 ppb 150 ppb Hydrogen Sulfide H2 S 0 ppm 1 1 ppm 10 0 ppm 20 0 ppm 30 0 ppm Hydro...

Page 28: ...pb 500 ppb 750 ppb TDI 0 ppb 2 ppb 20 ppb 40 ppb 60 ppb Tert butyl Arsine TBA 0 ppb 15 ppb 50 ppb 100 ppb 150 ppb Tert butyl Arsine XP TBA 0 ppb 15 0 ppb 50 ppb 100 ppb 150 ppb Tert butyl Phosphine TBP 0 ppb 60 ppb 300 ppb 600 ppb 900 ppb Tert butyl Phosphine XP TBP 0 ppb 92 ppb 300 ppb 300 ppb 900 ppb Tetrakis Dimethylamino Titanium TDMAT 0 ppm 0 3 ppm 1 3 ppm 2 7 ppm 4 0 ppm Tetrakis Dimethylami...

Page 29: ...open tape load lever fault audio alarm pulses and the instrument fault relay is activated Gas Condition See Section 1 9 1 4 6 Display Messages Status Display Normal Monitoring Actual concentration in ppm parts per million or ppb parts per billion When unit detects an above full scale condition the display will show xxx ppx e g AsH3 above full scale is 150 ppb CI2 reading above full scale is 3 0 pp...

Page 30: ...er On Gas Level 1 C O O C C O Power On Gas Level 2 C O C O C O Power On Fault O C O C O C Power On Alarm Test C O C O C O Power On Verify O C O C C O Power On Tape Load O C O C C O Power On No Gas Relay Disable O C O C O C Power On Gas Relay Disable O C O C O C Power On Fault Relay Disable O C O C O C Power On Alarm Test Relay Disable O C O C O C Power On Verify Relay Disable O C O C O C Power On ...

Page 31: ... ppm 1 0 ppm 15 706042 700342 1740 9309 Diisocyanates HDI 5 ppb 5 ppb 20 ppb 180 700506 700309 MDI 5 ppb 5 ppb 20 ppb 120 700506 700309 PPDI 5 ppb 20 ppb 60 700506 700309 TDI 5 ppb 5 ppb 20 ppb 60 700506 700309 All other Diisocyanates 5 ppb 20 ppb 120 700506 700309 Hydrazines MMH 10 ppb 100 ppb 200 ppb 120 708013 700347 MMH Low Level 10 ppb 5 ppb 10 ppb 900 708013 700347 Hydrazine N2 H4 10 ppb 50 ...

Page 32: ...37 Boron Trifluoride XP BF3 1 ppm 0 5 ppm 1 0 ppm 60 1750 9310 Boron Trifluoride XP BF3 Low Level 1000 ppb 502 pb 769 ppb 120 1750 9310 Hydrogen Bromide HBr 2 ppm 1 0 ppm 2 0ppm 15 705505 700337 Hydrogen Bromide XP HBr 2 ppm 1 0 ppm 2 0 ppm 30 1750 9310 Hydrogen Bromide XP HBr Low Level 2000 ppb 251ppb 502 ppb 120 1750 9310 Hydrogen Chloride HCl 2 ppm 1 ppm 2 ppm 10 705505 700337 Hydrogen Chloride...

Page 33: ...lfur Dioxide SO2 6 250 ppb 125 ppb 250 ppb 60 705027 700350 1 Other alarm levels can be made available consult Honeywell Analytics 2 XPS Chemcassette requires the appropriate calibration 3 Consult Honeywell Analytics for alarm levels Caution Gas concentrations below the full scale of the measuring range will not be reported until after the sample time duration has completed For measured values abo...

Page 34: ...e table below for specific gases Target Gas Maximum Sample Line Filter Type A Filter Type B Filter Type C Standard SPM SPM with Extended Sample Option Aromatic Amines PPD MDA TDA 15 cm 6 in Not approved no filter Diisocyanates no filter Hydrazines N2 H4 N2 H4 low MMH MMH low UDMH no filter n Butyl Amine 3 meters 10 ft 8 meters 25 ft X Chlorine Dioxide 3 meters 10 ft 15 meters 50 ft X X Hydrogen Pe...

Page 35: ... filter s membrane P N 0235 1072 every 30 days Hydrogen Bromide and Hydrogen Iodide are very water soluble A high relative humidity RH will cause sample loss due to absorption onto the sample lines For these gases use the table below as a guide to determine the maximum sample length Listing for current SO2 ppm calibration is the same for SO2 ppb calibration Note When monitoring for gases using low...

Page 36: ...SPM Single Point Monitor SPM Technical Handbook 5 1 5 Options ...

Page 37: ...r If this is not possible a source of clean air must be supplied through this fitting at atmospheric temperature and pressure Sample stream humidity requirements must be maintained 5 2 Z Purge System Option The SPM fitted with the Z Purge option is housed in a rugged NEMA 4X fiberglass enclosure See Z Purge enclosure illustration with accompanying legend page 5 3 for parts and controls The enclosu...

Page 38: ...nt compressed air is normally not suitable without the proper conditioning Nitrogen gas may be used for purge supply instead of compressed air The compressor source of purge air is to be physically located in a non hazardous area The air supply lines from the compressor to the SPM should be made of a non combustible material See NFPA 496 1993 for additional information on purge supply OFF ON ALARM...

Page 39: ... collar 30 Follow these important guidelines in opening up the Z Purge enclosure to make output and alarm connections Make sure electrical power is disconnected If power had previously been on follow the Z purge operation instructions Section 5 2 7 The cover 29 and the collar 30 must always remain connected together During disassembly and reassembly the connection between the cover 29 and the coll...

Page 40: ...0 mA output All wiring entering and exiting the SPM enclosure must be properly seal fitted dammed and potted before the instrument is put into service After making the connections be sure that all wiring harnesses and tubing lines are secure and will not be pinched when the door is closed OFF ON 1 2 3 4 5 6 7 8 9 10 11 12 NC C NO NC C NO NC C NO INSTRUMENT RELAY ALARM 1 ALARM 2 4 20 RS 422 OUTPUT ...

Page 41: ...e been de energized for five minutes 4 Open purge outlet valve to the horizontal position 53 5 All maintenance not requiring power can be performed at this time Warning Do not restore power unless area is known to be non hazardous or unless power has been removed from all devices within the enclosure for five minutes 6 For maintenance service requiring power turn override switch 55 mounted on the ...

Page 42: ...ing 5 3 Duty Cycle Option The duty cycle option switches SPM operation from continuous monitoring to intermittent sampling The option conserves Chemcassette usage in applications which have a background level of the target gas 5 3 1 Duty Cycle Intervals The duty cycle option allows sampling intervals in half minute increments from one half to 17 minutes during which the SPM will perform one sample...

Page 43: ...ceeds the respective alarm value and latched until reset 5 4 ChemKey Option The ChemKey option allows monitoring of different gases with one SPM unit To change gases change the Chemcassette and insert the new ChemKey Gas information including type of gas and alarm levels is programmed into a memory chip sealed within the ChemKey 5 4 1 ChemKey Components The illustration below shows a side view of ...

Page 44: ...hange from one ChemKey gas to another 1 Switch off main power control 8 2 Turn ChemKey counterclockwise and remove 3 Remove old Chemcassette 4 Clean all tape transport surfaces with methanol using a small rag or cotton swab 5 Install new Chemcassette 6 Check new target gas against information in Section 4 10 Sample Line Limitations and Section 4 11 Particulate Filter 7 Insert new ChemKey turn cloc...

Page 45: ...er foot Caution Secure all housings to the interface connectors using the clamping screws provided on the housing Use of the clamping screws will prevent accidental disconnection Pin Designations Signal Standard SPM Z Purge SPM A 1 Ground D 6 Transmit E 7 Transmit F 8 Receive G 9 Receive 5 5 4 How to Set Date and Time The internal clock calendar is factory set for Central Standard Time Time is dis...

Page 46: ...has occurred 5 6 2 How to Extend Battery Life The SPM instrument fault relay is a fail safe relay The relay remains asserted until the SPM detects an instrument fault condition or if the instrument power is turned off or lost To extend battery life disable the instrument fault relay by pressing the relay disable key 14 With the instrument relay disabled the battery life can be extended from eight ...

Page 47: ... information on sample line limitations 5 7 2 Connecting the Sample Line Sample flow rate is factory set and no field adjustments are necessary when tubing is 30 meters 100 feet If you wish to have a shorter sample line the tubing can be coiled but make sure that the tubing does not have any sharp bends or kinks If shorter tubing is required the tubing may be cut However flow rate may increase giv...

Page 48: ...e unit is connected to an AC source The heater operates directly from the line cord independent of the main unit power switch When the heater option is installed the front panel has two amber neon lights mounted on the left side below the Chemcassette holder The Power In LED 80 glows when the unit is receiving power It shows that power is available to be automatically applied to the heater if requ...

Page 49: ...gh temperature Fault If the internal temperature exceeds 50 C 122 F the SPM will go into fault mode FAULT 36 will appear on the LED display the audio alarm will sound and the instrument fault relay will de energize If the Heater On LED 81 is lighted then the heater thermostat is at fault Contact Honeywell Analytics Service for assistance If the internal temperature exceeds 70 C 158 F the power to ...

Page 50: ...tended for ambient monitoring only Sampling at two points with different pressures should not be done 2 The Two point Option only applies for target gases that allow 50 feet of sample line See Section 4 10 for information on sample line limitations 5 11 1 Installation The two pieces of 15 meter 50 foot tubing must be installed by inserting the end of the tubing into the fitting and tightening with...

Page 51: ...e and begins another sample period The 4 20 mA output reflects the value of the last gas sample 5 14 Modification for Diisocyanate Monitoring in High Humidities At high relative humidities 85 RH moisture build up can occur in the optics of the monitor and subsequently dampen the detection tape The Diisocyanates Chemcassette normally yellow becomes transparent when dampened This transparency is vie...

Page 52: ...ument s supply reel Visual observation of the Chemcassette supply is required If high humidities are causing false ppb readings with your SPM monitor contact Honeywell Analytics Service Department to arrange for the optics modification to be installed Request P N 870708 for the SPM ...

Page 53: ...SPM Single Point Monitor SPM Technical Handbook A 1 A Bi Directional Communications Protocol ...

Page 54: ...ows your equipment to monitor what the SPM instrument is actually doing from a remote area This port is designed to be bi directional that is it will both send and receive data The SPM instrument s communication port is indicated by a label RS 422 output The signals that are present on the connector conform to RS 422 specifications The pin out designations may be found in Section Your SPM will com...

Page 55: ...e seconds since the last packet was sent than the SPM will send a No Operation NOP packet A 1 5 Protocol Specifics Data and Packets A byte is a piece of data It is a way to indicate information It is composed of 8 bits of information A bit is the smallest possible piece of information There can only be two possible values for a bit 1 or 0 true or false A byte can have a numeric value of anything b...

Page 56: ...ndicates the type of data Another way to view this is the command tells the type of packet and parameters Each and every packet will contain at least 4 data bytes SPM DATE TIME stamp This data gives a date and time reference You should insure that your SPM s date and time are set accurately An example of a typical communication a packet with a command of 61 hexadecimal value is a FAULT type packet...

Page 57: ...nds The SPM will accept and process commands that your equipment may send to the instrument These commands are detailed in Table A 4 Your equipment may also send a RESET to the SPM which functions as if the RESET button were pressed Table A 3 shows the typical command and data sets Command Date Time Parameter s 1 Byte 2 Bytes 2 Bytes No of bytes is command dependent Table A 3 Command and Data Set ...

Page 58: ...cates the packet was not valid Will cause SPM to resend the last packet of information 30 RESET Will cause SPM to do an Alarm or Fault Reset as if the RESET button were momentarily pressed 31 Diagnostic Dump The SPM will transmit the software version and checksum of the EPROM via command 35 above Table A 5 Valid Response Packets to the SPM A 2 Protocol Packet Definition A 2 1 Packet Format An SPM ...

Page 59: ...he 4 20mA current loop Date 2 Year 7 Month 4 Day 5 Year is based from 1980 1989 would be 89 80 9 9 0 0 0 1 0 0 1 Fault Number 1 A number indicating a specific type of fault Consult SPM manual for fault codes Format Code 1 Top bit indicates ppm or ppb 1 ppm The remaining 7 bits indicate decimal position Therefore a parameter of Hex 81 1000 0001 would have concentration indicated as xx x ppm Honeywe...

Page 60: ... process of acknowledging a communication has been received The SPM uses ACK NAK responses INSTRUMENT refers to the SPM instrument with which you intend to interface or communicate PACKET refers to the block of information that is passed between the instrument and your equipment A PACKET is made from many bytes of information PROTOCOL refers to the manner in which the data is transferred and the f...

Page 61: ...SPM Single Point Monitor SPM Technical Handbook B 1 B Warranty Statement ...

Page 62: ...nty terms Time and travel expenses for on site warranty services will be charged at Honeywell Analytics normal billing rates Contact your Honeywell Analytics representative for information on available Service Contracts Honeywell Analytics shall not be liable for any loss or damage whatsoever or howsoever occasioned which may be a direct or indirect result of the use or operation of the Contract G...

Page 63: ...eywell Analytics reserves the right to change this policy at any time Contact Honeywell Analytics for the most current warranty information Chemcassette Warranty All Chemcassettes are warranted for a period not to exceed the Chemcassette expiration date printed on each package and tape reel ...

Page 64: ...ing the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 1245 600560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specifications are subject to change without notice The user is responsible for determining the suitability of this product ...

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