Summary of Contents for Ametek Land Millwatch
- Page 1 Millwatch / Silowatch (CO single stream, including high-CO) Silowatch (CO + O single stream) User Guide Issue 12 04 September 2017 Publication Nº 802767 Language: English © Land Instruments International, 2017...
- Page 2 IMPORTANT INFORMATION - PLEASE READ Health and Safety Information Read all of the instructions in this booklet - including all the WARNINGS and CAUTIONS - before using this product. If there is any instruction which you do not understand, DO NOT USE THE PRODUCT.
- Page 3 Web: www.landinst.com For further details on all AMETEK Land offices, distributors and representatives, please visit our websites. Return of Damaged Goods IMPORTANT If any item has been damaged in transit, this should be reported to the carrier and to the supplier immediately.
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Page 5: Table Of Contents
Service Requirements Diagram of Monitor Connecting the Electrical Power Supply Connecting the Autocal Unit* Millwatch / Silowatch (CO single stream, including high-CO) Probe Dimensions and Mounting Flange Details Coal Mill Probe Abrasive Applications Standard Probe Non Abrasive Applications Recommended Installation for Probe... - Page 6 Millwatch/Silowatch User Guide Single Stream Warm Up Routine Essential Setup Procedures 17.1 The Entry Code 17.2 Set the Time and Date 17.3 Set the Alarm Levels 17.4 Selecting an appropriate alarm level. 17.5 Select the Units of Measurement 17.6 Set the Automatic Calibration Times and Calibration...
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Page 7: General Description
To prevent blockages the probe is automatically purged with compressed air at preset intervals. WARNING The Millwatch and Silowatch are not designed for use in hazardous areas. The Millwatch and Silowatch are intended as an early warning device. It is not a substitute for a certified fire detection system. -
Page 8: Installation Dos And Don'ts
WARNING Isolate the electricity supply before starting work. WARNING The Millwatch/Silowatch Detector is permanently connected to an electricity supply. An external switch or circuit breaker is required. An external over current protection device must be provided as close to the monitor as possible. -
Page 9: Service Requirements
User Guide Millwatch/Silowatch Single Stream Service Requirements Service Requirement Size/Specification Calibration gas* 1 to 2 bar (15 to 30 psi) 4 l/min (0.15 ft /min) CO in Nitrogen during calibration 20 litres (0.7ft 1/4 in outside diameter PTFE, nylon or stainless... -
Page 10: Diagram Of Monitor
Millwatch/Silowatch User Guide Single Stream Diagram of Monitor Weight: 53 kg (117 lb) Instrument air Calibration gas Condensate removal Cable glands Cooling air Sample line connection Note blow-back air is supplied directly to the blow-back unit. Page 4... -
Page 11: Connecting The Electrical Power Supply
User Guide Millwatch/Silowatch Single Stream Connecting the Electrical Power Supply Where no case heater or antifreeze line are used, the power supply is connected using the plug supplied with the instrument. Where a case heater and/or antifreeze line are used, the power supply is connected on the terminal rail. -
Page 12: Connecting The Autocal Unit* * Millwatch / Silowatch (Co Single Stream, Including High-Co)
Millwatch/Silowatch User Guide Single Stream 5.1 Connecting the Autocal Unit* Millwatch / Silowatch (CO single stream, including high-CO) Nº Description Not used Instrument air (for calibration) Not used CO calibration gas Not used Not used High-range CO calibration gas Condensate drain (½” - 14 NPT Thread) -
Page 13: Probe Dimensions And Mounting Flange Details
User Guide Millwatch/Silowatch Single Stream Probe Dimensions and Mounting Flange Details 6.1 Coal Mill Probe Abrasive Applications 099.392 0.5 m probe and mounting flange 321.006 Filter 321.005 Abrasion shield Typical installation of Mill Probe in a Classifier Outlet Page 7... -
Page 14: Standard Probe Non Abrasive Applications
Millwatch/Silowatch User Guide Single Stream 6.2 Standard Probe Non Abrasive Applications Part Nº Probe length 704.424 500 mm 702.759 1000 mm Page 8... -
Page 15: Recommended Installation For Probe
Mill/Silo Fire Detector Calibration gas (CO), 2 stage non-relieving pressure regulator Millwatch / Silowatch (CO single stream, including high-CO) only *A 30 psi pressure regulator is supplied in the spares kit with the monitor and must be fitted by the user. All other pressure regulators and pipework must be supplied by the customer. -
Page 16: Connecting The Probe
Millwatch/Silowatch User Guide Single Stream 7.2 Connecting the Probe Sample gas Calibration gas Compressed air Alternative entry for antifreeze line An alternative probe is available for non-abrasive applications. All installations have the probe blow-back facility, however the probe type is optional. -
Page 17: Installing The Antifreeze Line
User Guide Millwatch/Silowatch Single Stream Installing the Antifreeze Line Only two of the pipes in the antifreeze line are used. Make sure you identify these AT BOTH ENDS of the line. The power supply connects to the circuit breaker INSIDE the Mill/Silo Fire Detector. -
Page 18: Connecting The Antifreeze Line
Millwatch/Silowatch User Guide Single Stream 8.1 Connecting the Antifreeze Line Connections viewed from the inside of the analyser. Note: Plugs are fitted to the outside of the case when anti-freeze lines are used. Page 12... -
Page 19: Blow-Back Unit
User Guide Millwatch/Silowatch Single Stream Blow-back Unit In hazardous areas, the blowback valve is located within the analyzer. 9.1 Blow-back unit with antifreeze line Do not adjust the regulator. Sample gas from probe Calibration gas to probe Antifreeze line, sample gas to monitor... -
Page 20: Connecting The Blow-Back Trigger
Millwatch/Silowatch User Guide Single Stream 10 Connecting the Blow-back Trigger Connect the blow-back unit to Conn 21. Service Requirement Size/Specification Blow-back trigger CONN 21 Pin 1 (0 V dc) Blowback unit Pin 1 CONN 21 Pin 2 (24 V dc) -
Page 21: Input Connection To Trigger Standby
User Guide Millwatch/Silowatch Single Stream 11 Input Connection to Trigger Standby The standby mode can be used to protect the analyser during abnormal modes of operation for example when a mill is being purged with steam or during periods where the plant is not operational. -
Page 22: Electrical And Signal Connections
Millwatch/Silowatch User Guide Single Stream 12 Electrical and Signal Connections All electrical work must be carried out by a competent person. Power and signal cabling are the responsibility of the customer and should comply with local regulations. Cables should be selected of a conductor size and insulation suitable for the purpose used. -
Page 23: Summary Of Connections Millwatch / Silowatch (Co Single Stream, Including High-Co)
User Guide Millwatch/Silowatch Single Stream 12.1 Summary of Connections Millwatch / Silowatch (CO single stream, including High-CO) Item From High Alarm Conn 13 Pin 1 Customer's recording device Common Pin 2 Pin 3 Mid Alarm Conn 15 Pin 1 Customer's recording device... -
Page 24: Silowatch (Co & O 2 Single Stream)
Millwatch/Silowatch User Guide Single Stream 12.2 Summary of Connections Silowatch (CO & O single stream) Item From High Alarm Conn 13 Pin 1 Customer's recording device Common Pin 2 Pin 3 Mid Alarm Conn 15 Pin 1 Customer's recording device... -
Page 25: Digital Inputs And Outputs
User Guide Millwatch/Silowatch Single Stream 13 Digital Inputs and Outputs WARNING Trigger Connections must be volt-free. Alarm, maintenance and system OK relays J2 External Calibration Trigger Push-button or relay contacts must remain closed for more than 2 seconds. The calibration will not start until it opens again. -
Page 26: Analogue Outputs
Millwatch/Silowatch User Guide Single Stream 14 Analogue Outputs Item Function From CO 4 - 20mA output Conn 23 Pin 1 Customer's connection Pin 2 Pin 3 4 - 20mA output Conn 10 Pin 1 Customer's connection Pin 2 Pin 3 * Silowatch (CO &... -
Page 27: Description Of The Control Panel
User Guide Millwatch/Silowatch Single Stream 15 Description of the Control Panel 000 ppm SYSTEM OK The composite gas reading is displayed by pressing GAS READING. Arrows Toggle ON/OFF or YES/NO options, change values, scroll lists DIAGS Diagnostics, shows number of faults. Press to list fault messages in turn... -
Page 28: Warm Up Routine
Millwatch/Silowatch User Guide Single Stream 16 Warm Up Routine The warm up routine is started automatically when the monitor is switched on. The sample gas chiller cools to its operating temperature. COOLER: n ºC system cooling The default setting 4 ºC (39 ºF). -
Page 29: Essential Setup Procedures
User Guide Millwatch/Silowatch Single Stream 17 Essential Setup Procedures 17.1 The Entry Code Press SETUP on the control panel. Use the arrow keys on the control panel to change the value displayed. If you change the code do not forget it. -
Page 30: Select The Units Of Measurement
Millwatch/Silowatch User Guide Single Stream 17.5 Select the Units of Measurement ppm or mg/Nm Use the down arrow to UNITS. mg/Nm = ppm 1.25 Press SETUP. (STD = 0° C and 101.3 kPa) Use the arrow keys to change the value and press SETUP to confirm. -
Page 31: Diagnostics
User Guide Millwatch/Silowatch Single Stream 18 Diagnostics 18.1 Fault Messages To check the fault messages press DIAGS. The number of system faults is displayed. Press DIAGS again to list individual messages. The diagnostics display has no affect on the operation of the monitor. -
Page 32: Clearing Faults
SETUP ENTRY CODE: 4 Any invalid entry code will allow values to be seen but not changed. 18.3.1 Menu options - Millwatch / Silowatch (CO single stream, including High-CO) ALARM A 2000 ppm CO alarm level 0 to 4000 in units of 10... -
Page 33: Menu Options - Silowatch (Co & O2 Single Stream)
User Guide Millwatch/Silowatch Single Stream 18.3.2 Menu options - Silowatch (CO & O2 single stream) ALARM A 2000 ppm CO alarm level 0 to 4000 in units of 10 O/P1 MIN 4 mA CO minimum current of analogue output 0, 2 or 4 mA... -
Page 34: Technical Specification
**CO level alarms: mid point and high, O high System OK Calibration/Maintenance Isolated change over SP 1 A at 240 V a.c. Page 28 Millwatch / Silowatch (CO single stream, including High-CO) **Silowatch (CO + O single stream... -
Page 35: Spare Parts
User Guide Millwatch/Silowatch Single Stream 20 Spare Parts Part Number Description Quantity 802769 Two Year Spares Kit - Single Stream Millwatch/Silowatch 317.476 Gas filter 801346 Membrane Disc Filter 801402 Twin Autoprene Tube Assembly 317.553 Replacement Pump Head 317.552 Replacement Viton Diaphragm... -
Page 36: Location Of Spares
Millwatch/Silowatch User Guide Single Stream 20.1 Location of Spares Page 30... -
Page 37: System Flow Diagrams
User Guide Millwatch/Silowatch Single Stream 20.2 System Flow Diagrams 20.2.1 Millwatch / Silowatch (CO single stream, including High-CO) Page 31... - Page 38 Millwatch/Silowatch User Guide Single Stream 20.2.2 Silowatch (CO + O single stream) Page 32...
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Page 39: Calibration
Frequent calibration gives the best accuracy and reliability: • The analyzer is not measuring sample during calibration, so it is unable to perform its early warning function. Therefore frequent calibration reduces the safety coverage offered by the Millwatch or Silowatch analyzer; • Calibration gas is expensive and frequent calibrations consume a significant amount of gas;... -
Page 40: Preventative Maintenance
Millwatch/Silowatch User Guide Single Stream 22 Preventative Maintenance 22.1 Maintenance Relay Before starting work switch on the maintenance relay. MAINT > ON. Procedure 6 Months 2 Years 3 Years Part Nº Inspect the monitor for damage or corrosion Check air and gas pressure flows ... -
Page 41: Replacing The Pump Head
User Guide Millwatch/Silowatch Single Stream 22.3 Replacing the Pump Head Isolate the monitor. Remove the gas sample pipes. Remove the screws from the pump head assembly. The pump head is replaced as one unit. Part number 317.553 22.4 Replacing the pump diaphragm 317.552 Isolate the monitor. - Page 42 Millwatch/Silowatch User Guide Single Stream Appendix 1 Parameter Record Sheets Use the tables below to record your parameter settings. Unit Parameter Actual Units Description Setting ALARM 1 Sensor 1 alarm level. ALARM 2 Percent O2 alarm level. O/P 1 MIN Minimum current for sensor 1 gas current loop O/P.
- Page 43 User Guide Millwatch/Silowatch Single Stream Unit Parameter Actual Units Description Setting FUEL 2 k2 Calculation constant (k2) for Fuel Type 2. FUEL 2 CO MAX Stoichometric value of Fuel Type 2. FT MIN DegC Minimum value for the flue temperature CLIP. FT MAX DegC Maximum value for the flue temperature CLIP.
- Page 44 Gas Monitoring Products Standard Terms of Warranty Land Instruments International warrant all products of our own manufacture to be within specified limits of calibration, if any, when despatched from our works. Also that they are free from defects in material and workmanship for normal use and service when used for their intended purpose within the limits of our specification.
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