General Monitors S800 Instruction Manual Download Page 1

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Model S800

Machine Mounted Methane

Monitoring System

The information and technical data disclosed in
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized in writing by General
Monitors.

Instruction

Manual

1006

General Monitors reserves the right to change
published specifications and designs without
prior notice.

MANS800

Part No.

MANS800

Revision

D/12-07

Summary of Contents for S800

Page 1: ...is document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General Monitors Instruction Manual 1006 General Monitors reserves the right to change published specifications and designs without prior notice MANS800 Part No MANS800 Revision D 12 07 ...

Page 2: ...ental Specifications 5 2 6 System Description 6 3 0 Installation 7 3 1 Notice 7 3 2 Upon Receipt of Equipment 7 3 3 Power Supply Installation 7 3 4 S800 Installation 7 3 5 S800 Terminal Connections 8 3 6 Installation Check Out 8 3 7 Sensor Locations 9 3 8 Sensor Poisons 11 4 0 Operation 12 4 1 Notice 12 4 2 General Maintenance 12 4 3 Electrical Inputs Outputs 12 4 4 Alarm Conditions 12 4 5 Latch N...

Page 3: ...18 6 2 Sensor Housing 18 6 3 Splash Guard 18 6 4 Dust Guard Assembly 19 6 5 Calibration Equipment 20 7 0 Technical Information 21 7 1 Spare Parts 21 7 2 S800 Tool List 22 7 3 Electronic Module 23 7 4 Module Base Assembly 24 7 5 Power Supply Assembly 25 7 6 Detector Housing Assembly 26 8 0 MSHA Installation Letter 27 ...

Page 4: ...6 Figure 5 AC Auto Calibration Display 16 Figure 6 CP Auto Calibration Display 16 Figure 7 CC Auto Calibration Display 17 Figure 8 Sensor Housing Drawing 18 Figure 9 Splash Guard Picture 19 Figure 10 Dust Guard 19 Figure 11 Dust Guard Kit 19 Figure 12 Electronic Module 23 Figure 13 Module Base Assembly 24 Figure 14 PowerSupply Assembly 25 Figure 15 Detector Housing Assembly 26 ...

Page 5: ...odified or repaired without General Monitors approval or which have been subjected to neglect accident improper installation or application or on which the original identification marks have been removed or altered Except for the express warranty stated above General Monitors disclaims all warranties with regard to the products sold including all implied warranties of merchantability and fitness a...

Page 6: ... initial application of power and any factory specified warm up period to the safety system verify that all signal outputs to and from devices and modules are within the manufacturers specifications Initial calibration calibration checking testing should be performed per the manufacturers recommendations and instructions Proper system operation should be verified by performing a full functional te...

Page 7: ...eneral Monitors latest sensing technology and consist of an S800 Power Supply Module a remote mounted catalytic bead sensor in its own explosive proof housing and a large LED display approximately two inches high available in yellow or red incorporated into an explosion proof XP housing The basic system is a single channel unit however two channel operation may be achieved by adding an additional ...

Page 8: ...ume or 0 to 100 LEL Accuracy 3 of full scale for gas concentrations up to and including 50 of full scale For gas concentrations greater than 50 the accuracy of the systems will be 5 of the full scale gas concentration Zero Drift less than 5 of span per year Response Time Time to 50 of full scale 10 seconds with 100 LEL concentration of Methane applied Time to 90 of full scale 30 seconds with 100 L...

Page 9: ...ts Machine Cut off Relay Output 10A 120Vac SPDT 5A 600Vac SPDT Remote Output 10A 12Vdc SPDT 10A 120Vac SPDT Cable Parameters Recommended 3 wire shielded maximum cable lengths allowable between module and sensor with one way resistance of 10Ohms per sensor lead 20 Ohms Loop 4 5Vdc nominal is 7600 feet 2320 Meters using 14 AWG 2 5 Environmental Specifications Operating Temperature Range Sensor 67F t...

Page 10: ...ll be configurable by qualified personnel A power on self test POST shall automatically be performed each time the monitor powers up A functional ramp test and LED test shall be switch capable without interrupting normal on line services The monitor will generate display codes associated with fault conditions whenever a fault or malfunction occurs A magnetic switch shall provide the operator front...

Page 11: ...signed for 120Vac use only NOTE Location of the permissible box on a hydraulic reservoir tank or other heat producing surface must be avoided 3 3 S800 Installation Access must be provided for the cable to enter the right left or back side of the S800 housing Adequate clearance should be left for removal access of the electronics module The location of the Model S800 should be protected by an overh...

Page 12: ...XP housing The connector accepts 14 or 16 AWG stranded wire Recommended strip length of the wire inserted into the connector is shown in Figure 1 Strip Length Figure 1 Wire strip Length Connections to the sensor and power supply are made via terminal blocks which are designed to accept spade lugged 14 or 16 AWG wire Follow the color coded wiring connections in Figure 2 3 6 Installation Check Out I...

Page 13: ... the sensor ramps to during stabilization is directly related to how cool the sensor has become The length of time off power and ambient temperature are contributing factors 3 7 Sensor Locations The sensor should be mounted as close as practical to the miner cutting head For longwall one at the head gate and one at the tail gate These are the recommended locations for Methane detection In addition...

Page 14: ...Model S800 10 Figure 2 Color Coded Wiring Connections ...

Page 15: ... to Hydrogen Sulfide H2S gas Halides compounds containing Fluorine Chlorine Bromine and Iodine Heavy Metals e g Tetraethyl Lead Other damaging materials which attack the sensor physically include mineral acids and caustic vapors The presence of such poisons and vapors does not exclude the use of General Monitors catalytic bead sensors however a careful analysis of ambient conditions should be awar...

Page 16: ...power The Model S800 provides relay outputs for warn and alarm conditions 4 4 Alarm Conditions The WARN and ALARM levels are preset at the factory If the alarm levels require fine tuning an UCISC service representative must be contacted to make the adjustment At a factory preset of 1 gas by volume 20 LEL the WARN LED will flash indicating the presence of the condition In addition the optional Remo...

Page 17: ...switch longer than ten seconds The digital display will begin ramping up at the start of the test and will continue to ramp up at a rate of 0 1 second NOTE A faster ramp test 10 seconds total test time may be set by an UCISC service representative As each alarm set point is exceeded the ramp up will pause 1 to 2 seconds then continue rising until the user deactivates the Reset Test switch The digi...

Page 18: ...en or short circuited Make sure the sensor wires are not damaged and are connected properly If this fault continues to occur replace the sensor and re calibrate F6 Low supply voltage Make sure the supply voltage level at the S800 is 15Vdc 2Vdc An unlatched F6 indicates momentary brown out or drop out of AC voltage F9 Communications Error This error is displayed if the communications circuit of the...

Page 19: ...he current mode of operation alarm warn fault ready and calibration The Rest Test and Calibration switches provide the user access to the LED Ramp test and auto calibration functions Figure 3 User Interfaces Displays 5 2 Auto Calibration Mode To perform an auto calibration follow the procedure listed below Place the calibration cup from the calibration kit Use United Central calibration kit 543568...

Page 20: ...eady AC approximately 5 seconds the zero value is now set NOTE zero air must be used to establish a true zero value Apply 2 5 by volume calibration gas The display will change to CP The calibration is now proceeding Figure 6 Figure 6 CP Auto Calibration Display After approximately two minutes the display will change to CC The calibration is now complete Remove the calibration gas Figure 7 The unit...

Page 21: ...et the unit out of the F2 fault The unit will return to normal operation with the previous calibration levels restored Perform a Cal Check Bump test by re applying the 2 5 mixture of Methane in Air and note the response of the Warning and Alarm relays as well as the sensor output The relays should energize per the ventilation plan and the sensor should respond between 2 3 to 2 7 If not recalibrate...

Page 22: ...se the MSHA explosion proof approval is void Once the sensor is installed operating in the field no attempt should be made to disconnect the sensor the conduit or the housing lid without removing power from the Model S800 as such an act would compromise the explosion proof integrity of the field device 6 3 Splash Guard General Monitors produces a universal splash guard UCISC 455535 that has been d...

Page 23: ... with a wire screen at one end It is easily removed for cleaning and or replacement of the disposable screen This General Monitors accessory is specifically designed to prevent dust and particulate matter form reaching the sensor flame arrestor Such debris can plug the screen and limit the amount of gas reaching the active surface of the sensor Figure 10 Dust Guard The Dust Guard is also available...

Page 24: ...Model S800 20 6 5 Calibration Equipment To calibrate the Model S800 use the Calibration Kit UCISC 543568 The calibration procedure and use of the Calibration Kits explained in section 5 3 ...

Page 25: ...sh Guard Molded Plastic 543100 Optional Splash Guard Aluminum 452328 Optional Dust Cap SS w screen 10 543584 Housing Detector w o Sensor 11 543608 Cover Sensor Housing 12 543748 Block Terminal 3 Pos 13 543704 O Ring Sensor Housing Electronic Module 14 543692 Screws 2 5 x 8mm Connector 15 543696 Screws 6 32 x Wire Guard 16 544156 Module Electronic Red 19 543828 S800 Module w Base Red 20 543600 Post...

Page 26: ... wrench 7 543688 2 Phillips screw driver 8 417337 12 in crescent wrench Electronic Module 14 543692 1 Phillips screw driver 16 544156 3 16 Hex T handle pr L key with 2 in long stem minimum 21 543600 5 16 open wrench 22 543708 2 Phillips screw driver 25 543716 1 8 slotted screw driver Terminal Blocks 1 4 slotted screw driver Any of these tools may be used on the Terminal Block Screws ...

Page 27: ...Model S800 7 3 Electronic Module 23 Calibration Switch Module Removal Screws Reset Test Switch Module Removal Screws Figure 12 Electronic Module ...

Page 28: ...Model S800 7 4 Module Base Assembly Figure 13 Module Base Assembly 24 ...

Page 29: ...Model S800 7 5 Power Supply Assembly Figure 14 Power Supply Assembly 25 ...

Page 30: ...Model S800 7 6 Detector Housing Assembly Figure 15 Detector Housing Assembly 26 ...

Page 31: ... ____________ The installation was made in accordance with the manufacturer s instructions safe practices The physical position of mounting is as shown on the following sketch Top View Mining Cutting heads or Loading arms Front Longwall Top View National Mine Service System Part No is Details of the monitor system are shown on the attached drawing Unit was installed by Unit was calibrated by _____...

Page 32: ...ng the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 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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