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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

Summary of Contents for Millwatch

Page 1: ...Millwatch Silowatch CO single stream including high CO Silowatch CO O2 single stream Land Instruments International 2017 User Guide Issue 12 04 September 2017 Publication N 802767 Language English...

Page 2: ...e user documentation supplied before installing and operating the equipment The safety of any system incorporating this equipment is the responsibility of the assembler Protective Clothing Face and Ey...

Page 3: ...ent damage during transit You must include a written report of the problem together with your own name and contact information address telephone number email address etc Design and Manufacturing Stand...

Page 4: ......

Page 5: ...Probe 9 7 1 Recommendations for Installing the Instrument Air Supply and Calibration Gas 9 7 2 Connecting the Probe 10 8 Installing the Antifreeze Line 11 8 1 Connecting the Antifreeze Line 12 9 Blow...

Page 6: ...Diagnostics 25 18 1 Fault Messages 25 18 2 Clearing Faults 26 18 3 Key to Menu Items 26 18 3 2 Menu options Silowatch CO O2 single stream 27 19 Technical Specification 28 20 Spare Parts 29 20 1 Locat...

Page 7: ...ced warning of a fire There are two types of sample probe available one sample probe has a hardened protective cover designed for highly abrasive pulverised coal A continuous sample of gas is drawn in...

Page 8: ...sed Mount vertically on a dry clean surface Mount upright with the fittings at the bottom Use all four of the mounting brackets Provide certified calibration gas Purge and leak test the calibration ga...

Page 9: ...ing air 4 bar 60 psi minimum 8 bar 120 psi maximum Clean Oil free 300 l min 10 ft3 min 1 4 in outside diameter PTFE nylon or stainless steel tube 6 Sample line connection 15 m 50 ft maximum nylon anti...

Page 10: ...m User Guide Page 4 4 Diagram of Monitor Weight 53 kg 117 lb 1 Instrument air 2 Calibration gas 3 Condensate removal 4 Cable glands 5 Cooling air 6 Sample line connection Note blow back air is supplie...

Page 11: ...e a case heater and or antifreeze line are used the power supply is connected on the terminal rail L Live Brown N Neutral Blue Earth Ground Green yellow When an antifreeze line and or case heater is f...

Page 12: ...ment air for calibration 3 Not used 4 CO calibration gas 5 Not used 6 Not used 7 High range CO calibration gas 8 Condensate drain 14 NPT Thread 9 Cable glands 10 Safety pressure exit 11 Not used 12 By...

Page 13: ...m User Guide 6 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 installatio...

Page 14: ...Millwatch Silowatch Single Stream User Guide Page 8 6 2 Standard Probe Non Abrasive Applications Part N Probe length 704 424 500 mm 702 759 1000 mm...

Page 15: ...the user All other pressure regulators and pipework must be supplied by the customer 7 Recommended Installation for Probe Position the analyser and probe below the blowback unit to allow any condensa...

Page 16: ...Calibration gas 3 Compressed air 4 Alternative entry for antifreeze line An alternative probe is available for non abrasive applications All installations have the probe blow back facility however the...

Page 17: ...cuit breaker INSIDE the Mill Silo Fire Detector A Signal Cables black red brown use to connect blowback solenoid valve B Sample and calibration gas lines one is not used identify lines at both ends C...

Page 18: ...Silowatch Single Stream User Guide Page 12 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...

Page 19: ...e antifreeze line as shown in diagram 7 Cable gland alternative connection for blow back trigger from monitor 9 Blow back Unit In hazardous areas the blowback valve is located within the analyzer 9 1...

Page 20: ...User Guide Page 14 10 Connecting the Blow back Trigger Connect the blow back unit to Conn 21 Service Requirement Size Specification 1 Blow back trigger CONN 21 Pin 1 0 V dc CONN 21 Pin 2 24 V dc Blowb...

Page 21: ...or is in standby The maintenance relay is ON Blowback operates constantly the compressed air valve in the blowback unit remains open AIR is passed through the gas sensors Flow errors are ignored The p...

Page 22: ...always be grounded earthed Screened signal leads are recommended and a single ground termination made at one end only Description Requirement Size Digital System OK Alarms mid and high Maintenance Cal...

Page 23: ...in 2 Pin 3 Customer s recording device Maintenance Relay Conn 12 NO Common NC Pin 1 Pin 2 Pin 3 Customer s recording device Blow back signal to probe Stream A Conn 21 0V dc 24V dc Pin 1 Pin 2 Stream A...

Page 24: ...ng device Maintenance Relay Conn 12 NO Common NC Pin 1 Pin 2 Pin 3 Customer s recording device Blow back signal to probe Conn 21 0V dc 24V dc Pin 1 Pin 2 Stream A Blow back unit Pin 1 Stream B Blow ba...

Page 25: ...ction From To 1 System OK Conn 11 NO Common NC Pin 1 Pin 2 Pin 3 Customer s recording device 2 Maintenance Calibration Relay output Conn 12 NO Common NC Pin 1 Pin 2 Pin 3 Customer s recording device 3...

Page 26: ...GND Pin 1 Pin 2 Pin 3 Customer s connection Silowatch CO O2 single stream The output can also be set to 0 2 or 4 mA to 10 to 20 mA Example of setting analogue output To set the minimum current for th...

Page 27: ...on SYSTEM OK LED illuminates when the monitor is functioning correctly Arrows Toggle ON OFF or YES NO options change values scroll lists DIAGS Diagnostics shows number of faults Press to list fault me...

Page 28: ...o 30 minutes 2 A timer is displayed Zero calibration takes approximately five minutes 300 seconds ZERO CALIBRATING time remaining 20 s 3 The monitor begins to draw sample gas The settling time is to a...

Page 29: ...TUP to confirm A 24 hour clock is used 17 3 Set the Alarm Levels ALARM A 1 Select the required alarm with the down arrow _ALARM A nnn ppm OP1 MIN 2 Press SETUP 3 Use the arrows to change the value zer...

Page 30: ...change the value with the arrow keys and press SETUP again TYPE MANUAL See below TIMED TRIGGER Calibration is set by TIME TO NEXT CAL and CAL INTERVAL values EXT TRIGGER Use an external calibration s...

Page 31: ...s Reset the fault Replace sensor assembly Check calibration gas concentration in setup menu matches calibration gas certificate Check for leaks in sample path FLOW RATE FAULT Low sample gas flow Sampl...

Page 32: ...m A mid point calibration constant for red channel A BLUE COEF 1 Gas stream A span calibration constant for blue channel A BLUE COEF 2 0 Gas stream A mid point calibration constant for blue channel PU...

Page 33: ...tion constant for blue channel A RED COEF 1 O2 span calibration constant for red channel A RED COEF 2 0 O2 mid point calibration constant for red channel A BLUE COEF 1 O2 span calibration constant for...

Page 34: ...nforms to EN 50 081 and EN 50 082 Electrical Safety Conforms to EN 61010 1 Measurement Ranges Low CO sensor 0 to 100 up to 4000 ppm in 50 ppm steps or 0 to 100 up to 5000 mg m3 in steps of 50 mg m3 O2...

Page 35: ...282 1 4in Back Ferrule Swagelok 2 801691 Blow back unit for standard line 801692 Blow back unit for antifreeze line 801387 Air pump 801373 Cooler assembly 801401 Peristaltic pump 317 476 Disposable Fi...

Page 36: ...Millwatch Silowatch Single Stream User Guide Page 30 20 1 Location of Spares...

Page 37: ...Page 31 Millwatch Silowatch Single Stream User Guide 20 2 System Flow Diagrams 20 2 1 Millwatch Silowatch CO single stream including High CO...

Page 38: ...Millwatch Silowatch Single Stream User Guide Page 32 20 2 2 Silowatch CO O2 single stream...

Page 39: ...1 Automatic Calibration Quick Start Although a number of detailed calibration options can be selected the following procedure is sufficient for most calibration requirements 1 Check the display does...

Page 40: ...sample probe gaskets Replace if necessary 809926 Change sample and air filter 317 476 Change PTFE membranes 801346 Check the sensor co efficients If greater than 15 000 replace he sensor Change peris...

Page 41: ...ement diaphragm into place 11 Refit the protective pump cover the pump head assembly and the gas sample pipes 12 Switch on and check that pumps operate and that air is being expelled through both blee...

Page 42: ...DAMPER 6 secs O2 current loop O P response time O P 4 MIN mA Minimum current for NOx current loop O P O P 4 MAX mA Maximum current for Nox current loop O P 1 RED COEFF 1 Span calibration constant for...

Page 43: ...ormalisation applied O2 REF O2 reference value for normalisation WET ANALYSIS Wet analysis applied to gas concentrations WATER Water vapour concentrations for wet analysis CO2 COMP CO2 factor for O2 c...

Page 44: ...erials or workmanship but due to application conditions Land Instruments International reserve the right to charge additionally for all labour on establishing this at the customer s works Warranty cov...

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