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Easidew Online User’s Manual

Michell Instruments

APPENDIX B

Appendix B

RS232 Data Communications Port Connections (Optional)

The Easidew Online instrument has an RS232 port, situated on the rear panel of the

monitor. This port enables remote access to the instrument’s con

guration and the

indicated dew-point temperature.

The method of connection is shown in

Figure 34 and the following items will be required

(these are not supplied with the Easidew system):

•

Matching connector for monitor output port

•

Screened RS232 communications cable (max length permitted 12m (39.4ft))

•

9-pin, D-Type RS232 connector

GND

9 Pin D-Type Connector

Process Indicator
Rear Panel

Figure 34

RS232 Connections

1. Strip both ends of the communications cable to expose the individual

cable cores and the cable screen.

Trim off the cable screening at the monitor end.

Connect the Tx, Rx and ground (GND) cable cores to the monitor connector

as shown.

On the 9-pin D-type PC connector, connect the Tx line to pin 3, the Rx

line to Pin 2 and the GND connection to Pin 5. Connect the Screen to Pin

5 and/or the frame of the connector.

Check that the cable wiring has been completed correctly.

Содержание Easidew Online

Страница 1: ...Easidew Online Dew Point Hygrometer User s Manual Cdp Fdp Easidew O nline H ygrom eter 97094 Issue 18 5 March 2016 ...

Страница 2: ...information when contacting Michell Instruments for service purposes Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoice Date Location of Instrument Tag No ...

Страница 3: ...may not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd Cdp Fdp For Michell Instruments contact information please go to www michell com Easidew Online ...

Страница 4: ...System Test 14 2 9 Mounting the Sample Block and Transmitter 14 2 9 1 Sample Block Gas Connections 14 2 10 Preparation of the Transmitter cable 16 2 11 Cable Connection 17 2 12 Electrical Schematic 17 2 12 1 Electrical Boundaries 18 2 13 Transmitter Mounting 18 2 13 1 Transmitter Mounting Sample Block Optional 19 2 13 2 Transmitter Mounting Direct Pipeline Connection 20 2 13 3 Transmitter Mounting...

Страница 5: ...0 Figure 10 AC Power Supply Connections 12 Figure 11 DC Power Supply Connections 13 Figure 12 Sample Block Gas Connections 15 Figure 13 Connector Terminal Block Removal 16 Figure 14 Wiring Connections 16 Figure 15 Connector Installation 17 Figure 16 2 Wire Connection Diagram 17 Figure 17 Maximum Load of Easidew Including Cable Resistance 18 Figure 18 Transmitter Mounting Sensor Block 19 Figure 19 ...

Страница 6: ...cycling Warranty Information 53 D 1 Pressure Equipment Directive PED 97 23 EC 53 D 2 Recycling Policy 53 D 3 WEEE Compliance 53 D 4 RoHS2 Compliance 54 D 5 Warranty 54 D 6 REACH Compliance 55 D 7 Calibration Facilities 55 D 8 Return Policy 56 D 9 Manufacturing Quality 56 Appendix E Return Document Decontamination Declaration 58 Tables Table 1 Monitor Front Panel Controls and Indicators 8 Table 2 F...

Страница 7: ...the instrument The specified safe working pressure SWP for this instrument is 45 MPa 450 barg 6500 psig Toxic Materials The use of hazardous materials in the construction of this instrument has been minimized During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument Care should however be ...

Страница 8: ... m sec meters per second Nm Newton meter ppmV parts per million by volume RS232 serial data transmission standard Rx receive scfh standard cubic feet per hour scfs standard cubic feet per second SWP safe working pressure sec second s temp temperature V Volts Ω Ohms Warnings The following general warnings listed below are applicable to this instrument They are repeated in the text in the appropriat...

Страница 9: ...The monitor also has a re transmission facility which buffers the transmitter output for onward transmission to other systems The transmitter input to the monitor is configured as a 4 20 mA current loop signal and the re transmitted output can be configured as either a 4 20 mA or a 0 20 mA current loop signal ranged as per the input Two alarm outputs high and low are provided for connection to ext...

Страница 10: ...nd install and can be configured to meet specific needs 5 8 18 UNF process connections Dew point or ppmV moisture content IP66 NEMA 4 Sensor and IP65 NEMA 12 Monitor front panel only Measurement range 100 to 20 C 148 to 68 Fdp Dual alarms Accuracy 2 Cdp Clear and easy to read display Calibration certificate traceable to NPL and NIST ...

Страница 11: ...nd accessories are packed into a box and the method of unpacking is shown as follows Figure 2 Unpacking Method Open the box and unpack carefully as follows Save all the packing materials for the purpose of returning the instrument for re calibration or any warranty claims Note that the packing method may vary slightly in the U S 1 Remove the top packing 1 2 Remove the dew point transmitter box 3 3...

Страница 12: ...he body cover 4 and tip cover 5 2 Remove the body cover 4 and the tip cover 5 but leave the blue plastic protective cover 3 in place until ready for installation NOTE The transmitter sensing element is protected while in transit by a blue cover containing a small desiccant capsule The connection pins are protected by a red plastic cap None of these plastic items are required for the operation of t...

Страница 13: ...ts On delivery please check that all the following standard components are present in the packing box Report any shortages to Michell Instruments immediately 1 2 3 4 5 6 7 8 9 Cdp Fdp Easidew Online Dew Point Hygrometer User s Manual 97211 Issue 01 May 2010 Figure 6 Easidew Online Components 1 Monitor clamps 2 off 2 Easidew Monitor 3 Transmitter cable assembly 4 Power cable 5 Screwdriver 6 User s ...

Страница 14: ... shown for illustration purposes only Please keep the HDPE or SS guard fitted at all times if possible 0906 Range 100 20 48 Lancaster Way B Ely Cambridges CB6 United Kin g MICHE Instrumen SF72 h h h h h h Electrical Connector Transmitter Cover Transmitter Label Hexagonal Nut Process Connection Sensing Element Figure 7 Easidew Transmitter ...

Страница 15: ...unit for F is described in Section 3 4 Optionally the instrument can be set up to read dew point in parts per million ppmV range 0 to 3000 ppmV This option requires the transmitter to be set up for ppmV either at the time of ordering or subsequently via Michell application software NOTE No specific ppmV LED indicator is provided on the monitor ppmV is selected if neither the Cdp nor the Fdp temper...

Страница 16: ...m relay contacts associated with this alarm normally open will change state close and will remain closed until the dew point temperature moves back within the programmed operational limit Alarm 1 is usually allocated to the Low alarm setting These relay contacts are rated at 250 V 3 A and are connected as shown in Section 2 13 Section 3 3 3 describes the setting up of AL1 trip points 5 AL2 When il...

Страница 17: ...he list Left arrow decrement key This key is used to access sub menus and within individual sub menus to decrease the numeric value of the selected parameter Right arrow increment key This key is used to access sub menus and within individual sub menus to increase the numeric value of the selected parameter SET SET key Depending upon the context this key is used to access the set value of the sele...

Страница 18: ...he hook on the topside of the clamp 3 into the slot 4 located on top of the monitor casing 3 Tighten the fixing screw 5 finger tight against the back of the panel 4 Insert the hook on the second clamp 6 into the slot located on the underside of the instrument casing and tighten the fixing screw finger tight against the back of the panel 5 Ensure that the monitor is sitting flush to the front of th...

Страница 19: ... 15 10 50 60 Hz 6 VA A low voltage 24 V DC option is also available Transmitter current loop input 4 20 mA 24 V DC loop power provided by monitor Alarm 1 Low potential free contacts single pole make Contacts rated at 250 V 5 A Alarm 2 High potential free contacts single pole changeover Contacts rated at 250 V 5 A Re transmitted input signal from the dew point transmitter 4 20 mA or 0 20 mA ...

Страница 20: ...5 6 7 8 9 10 11 2 1 4 3 Monitor viewed from underneath Figure 10 AC Power Supply Connections 1 Ensure that no power is connected to the mains lead 2 Connect the blue white US standard neutral lead 2 to terminal 23 on the rear panel of the monitor 3 Connect the brown black US standard live lead 3 to terminal 24 on the rear panel of the monitor 4 Strip back the insulation on the free end of the powe...

Страница 21: ...h Figure 11 DC Power Supply Connections 1 Ensure that no power is connected to the mains lead 2 Connect the blue white US standard lead 2 to terminal 23 on the rear panel of the monitor 3 Connect the brown black US standard lead 3 to terminal 24 on the rear panel of the monitor 4 Strip back the insulation on the free end of the power cable and wire to an appropriate power supply plug brown lead to...

Страница 22: ...nt is configured to read ppmV neither of the temperature LED indicators will be lit 3 If a loop calibrator is available set it to Ext loop and connect to terminal 4 positive and terminal 3 negative of the process indicator 4 Set the output current of the loop calibrator to 4 mA the display should now be reading 100 0 5 Set the output current of the loop calibrator to 20 mA the display should now b...

Страница 23: ...acilitate ease of connection to the port at least 75mm 3 of the tubing coming out of the Gas In port must be straight 2 Clean off any burrs or metal shavings adhering to the tubing 3 Screw the NPT U S NPT Swagelok adaptor 5 into the NPT U S NPT inlet port in the sensor block 6 and tighten to a torque setting of 35 Nm 25 lbf ft 4 Pass the stainless steel tubing 1 through the locking nut 2 NOTE Thre...

Страница 24: ...he washer are retained on the screw and are present during re installation For the transmitter to work properly and to achieve maximum performance the transmitter cable must be connected to the sensor connector as shown in the drawing below Note The drawing below shows the identity of the connector terminals and wiring connections of the cable manufactured by Michell Instruments SCALE 2 1 i j SHOR...

Страница 25: ...nd washer must be tightened to a minimum torque setting of 3 4 Nm 2 5 ft lbs The transmitter cable used must be a minimum diameter of 4 6mm 0 2 1 2 3 4 4 Figure 15 Connector Installation 2 12 Electrical Schematic NOTE The screen shield should be connected for maximum performance and to avoid interference 3 1 Max Load 250R 12V 500R 24V Supply 12V Min 28V Max Screen Shield Figure 16 2 Wire Connectio...

Страница 26: ...ted into either a flow through sensor sampling block optional or directly inserted into a pipe or duct and can be operated at pressures of up to 45 MPa 450 barg 6500 psig when fitted with the bonded seal provided The recommended gas flow rate when mounted in the optional sampling block is 1 to 5 Nl min 2 1 to 10 6 scfh However for direct insertion applications gas flow can be from static to 10 m s...

Страница 27: ...een removed from the tip of the transmitter 2 Fit the bonded seal 4 over the threaded part of the transmitter body WARNING Under no circumstances should the sensor guard be handled with the fingers 3 Screw the transmitter 1 into the sample block 3 and tighten to a minimum torque setting of 30 5 Nm 22 5 ft lbs NOTE Use the flats of the hexagonal nut and not the sensor body 4 Fit the transmitter cab...

Страница 28: ...y of a gas tight seal a mounting flange will be required on the pipework in order to provide a flat surface to seal against The following procedure must be carried out by competent personnel 1 Ensure that the blue protective cover and its desiccant capsule has been removed from the tip of the transmitter WARNING Under no circumstances should the sensor guard be handled with the fingers 2 Fit a bon...

Страница 29: ...to the threaded part of the transmitter and tighten to 30 5 Nm 22 5 ft lbs NOTE Use the flats of the hexagonal nut and not the sensor body WARNING Under no circumstances should the sensor guard be handled with the fingers 4 Screw the transmitter 1 with its seal 3 and adapter 4 into the sample block see Section 2 4 1 or pipeline see Section 2 4 2 and fully tighten using a wrench until the seal is f...

Страница 30: ... 7 8 9 10 11 1 2 3 4 4 3 Monitor viewed from above 2 Figure 21 Transmitter Connections 1 Connect the blue wire 2 of the transmitter cable to terminal 1 on the monitor 1 2 Connect the green wire 3 of the transmitter cable to terminal 3 on the monitor 3 Connect the red wire 4 of the transmitter cable to terminal 4 on the monitor 4 Check that the transmitter cable wiring has been completed correctly ...

Страница 31: ...ts will be connected to external systems that can potentially influence the operation of the process Alarm level signals could be at mains potential so it is essential that before connecting these signal lines checks are made to ensure that these inputs are not live and that it is safe to handle them Alarm Outputs Alarm 1 is a single pole make contact Connect incoming signal lines to terminal 16 c...

Страница 32: ...er loop supply ve 24 V DC w r t terminal 1 7 User defined ALR2 normally closed 9 7 8 8 User defined ALR2 normally open 9 User defined ALR2 common 13 User defined Current loop out ve Default 4 20 mA 14 User defined Current loop out ve Default 4 20 mA 16 User defined ALR1 common 16 17 17 User defined ALR1 normally open 23 AC Version Blue Power in neutral 100 240 V 50 60 Hz 24 AC Version Brown Power ...

Страница 33: ... Section 2 and connected to a sample gas supply that is representative of the process being monitored 3 1 General Operational Information Operation of the Easidew Online is completely automatic and once set up requires little or no operator intervention The dew point transmitter is designed to operate in a flowing gas stream of between 1 and 5 Nl min 2 1 and 10 6 scfh when mounted in a sample bloc...

Страница 34: ...lay the measured dew point temperature as a steady reading within the range 100 to 20 Cdp 148 to 68 Fdp or 0 to 3000 ppmV depending upon how the instrument has been set up The default setting is degrees Celsius In the absence of any error indications the instrument will now be operational using the default parameters Easidew Online Hygrometer Figure 23 Typical Display If the display is flashing a ...

Страница 35: ... these alarms is as follows Alarm 1 Temp 20 Alarm 1 ON Temp 20 Alarm 1 OFF Alarm 2 High Alarm is set to switch ON when the temperature reading is higher gas wetter than its set point value For the default set points therefore the operation of this alarm would be as follows Alarm 2 Temp 40 Alarm 2 OFF Temp 40 Alarm 2 ON Depending upon the application if required it is possible to reverse the switch...

Страница 36: ...be 0001 6 Press the key once to change the display to 0000 7 Press the SET key to accept the new value The default setting for Alarm 1 is now reversed 8 Either press the P key twice to return to the main display or press the P key once followed by the key to move to the Alr2 setting sequence from step 4 above To reverse the switching logic for Alarm 2 ONLY proceed as follows 1 Press the P key once...

Страница 37: ...ew Online User s Manual Michell Instruments 29 OPERATION P P P SET SET SET x2 x3 x2 P P SET SET x2 Main Display Main Display Change Alarm 2 Switching Logic Main Display Figure 24 Change Alarm Switching Logic ...

Страница 38: ...ess the SET key once ALr1 will be displayed To set Alarm 2 only press the SET key twice and follow the Alarm 2 branch instead 2 Press the key to display the flashing current Alarm 1 set point 20 C in this example 3 Use the and keys to set the required value 25 5 C in this example 4 Press the SET key once to store the new or existing value for Alarm 1 and to enter the set up menu for Alarm 2 ALr2 T...

Страница 39: ... the operational key sequence To change output from 4 20 mA to 0 20 mA 1 Press the P key once the display will read tECH 2 Press the SET key and the display will flash between ConF and PinP 3 Press the key and the display will flash between out1 and ConF 4 Press the SET key to display oAt1 5 Press the key once to display a flashing 4 digit number For the default setting 4 20 mA this will be 0001 6...

Страница 40: ...t settings associated with this temperature scale are as follows Span 100 to 20 Cdp Lower and upper span limits 100 and 20 display flashes outside this range Minimum alarm set point 100 Cdp Maximum alarm set point 20 Cdp To range the instrument for F all the above parameters need to be changed to their Fahrenheit equivalent values 148 and 68 F It is not sufficient just to change the F C units To c...

Страница 41: ...display will flash the current maximum span limit 020 0 6 Use the and keys to set the required equivalent Fahrenheit value 068 0 and press the SET key twice unit is then displayed 7 Press the key the display will flash the current unit C 8 Use the and keys to set the required scale units F in this example and press the SET key LoL is then displayed 9 Press the key and the display will flash with t...

Страница 42: ...ess the key four times and the display will flash between ConF and GEnn 4 Press the SET key once the display will read SU L 5 Press the key once to display a flashing 4 digit number representing the current minimum alarm level setting The default setting for the C range is 100 0 6 Use the and keys to set the required new value e g 148 0 7 Press the SET key to accept the new value The display will ...

Страница 43: ...he current maximum span limit 0200 8 Use the and keys to set the required ppmV maximum reading 3000 and press the SET key twice unit is then displayed 9 Press the key the display will flash the current unit C 10 Press the key three times to set the display reading to _ ppmV and press the SET key LoL is then displayed 11 Press the key the display will flash the current alarm lower range limit 1000 ...

Страница 44: ...lay e g C Set alarm lower range limit e g zero Set alarm upper range limit e g 3000 ppm v x2 x2 Figure 29 Set up Monitor to read ppmV 3 4 5 Monitor Limits When Unit Scaled to ppmV When unit is scaled to ppmV the display will read zero when the mA input signal is between 3 and 4 mA NOTE On displays supplied before December 2011 the display will show negative ppmV values when the sensor input signal...

Страница 45: ...ey to accept the new value Set baud rate 7 bAud will now be displayed Press the key once to display a flashing 4 digit number The default setting is 0003 representing 9600 baud 8 Use the and keys to give the required new value the range is 0 to 4 0 1200 baud 1 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud Press the SET key to accept the selected value Set parity 9 Prty will now be displayed Press...

Страница 46: ... Main display SET Set baud Set Address 0 1200 1 2400 2 4800 3 9600 4 19200 SET SET Set Parity Set number of stop bits 0000 1 stop bit 0001 2 stop bits 0000 None 0001 Odd 0002 Even SET SET Main Display F P Range between 0001 and 0247 Figure 30 Set up Data Communications Parameters ...

Страница 47: ...x00 0x00 0x01 0x31 0xCA Send this to the instrument with the correct delays between characters Baud Rate bps Min Delay ms Max Delay ms 1200 9 17 13 76 2400 4 59 6 88 4800 2 30 3 44 9600 1 15 1 72 19200 0 57 0 86 After a few seconds the instrument will send back the following response Instrument Address Command Number of bytes Display High Display Low LRC CRC 0x01 0x03 0x02 0x00 0x67 Varies Varies ...

Страница 48: ...l min 10 6 scfh is the recommended optimum Flow regulation is not provided within the Easidew Online system Sample gas flow must therefore be regulated outside the instrument on the input side of the sample block by means of a precision needle valve Always use high quality valve gear coupling connections and pipework The transmitter will operate successfully at flow rates within its operational ra...

Страница 49: ...rease in partial vapor pressure Deadspace Figure 32 Indication of Dead Space Particulate and Oil Removal Particulate matter at high velocity can damage the sensing element and similarly at low velocity they may blind the sensing element and reduce its response speed If particulate such as degraded desiccant pipe scale or rust is present in the sample gas use an in line filter High Quality Tube and...

Страница 50: ... a reference gas of known dew point Calibration services are offered by Michell Instruments at their accredited calibration laboratories All calibrations are traceable to national standards either via the National Physical Laboratory UK or the National Institute of Standards and Technology USA The Easidew transmitter can be returned to Michell Instruments either directly or via the authorized dist...

Страница 51: ...ilure Refer to Michell or local representative for repair Sbr Sensor failure or break in sensor connection Check transmitter cable for continuity damage Rectify replace cable ErrH Gas is wetter than 20 Cdp Check gas source supply Sensor contaminated Replace re calibrate transmitter outR Input out of range Check gas source supply Re calibrate replace transmitter rurC Reverse input connection Swap i...

Страница 52: ...Easidew Online User s Manual 44 97094 Issue 18 5 March 2016 APPENDIX A Appendix A Technical Specifications ...

Страница 53: ...0 60 Hz Optional 24 V DC 15 10 6W Over Voltage Category III fixed installation category Display 20 3mm red 4 digit LED display Temperature and Alarms Indicators Red LED s Load Resistance Max 600 Ω Current Consumption AL1 AL2 C F Power Connection 60 mA max Transmitter cable Copper braid screened cable 4 core 7 0 2 0 22mm stranded tinned copper conductors PVC insulated Melinex taped Black PVC outer ...

Страница 54: ...0 to 60ºC 40 to 140ºF Operating Pressure 45 MPa 450 barg 6500 psig max Flow Rate 1 to 5 Nl min 2 1 to 10 6 scfh mounted in standard sampling block 0 to 10 m sec 0 to 32 8 fps direct insertion Temperature Coefficient Temperature compensated across operating temperature range Mechanical Specifications Ingress Protection IP66 in accordance with standard BS EN60529 1992 NEMA 4 in protection accordance...

Страница 55: ...NF g 5 8 Bonded Seal Transmitter ø25 4 x 2mm ø1 x 0 07 Sample Block 55 2mm 2 2 27 A F 30mm 1 18 5 8 18 UNF 5 8 18 UNF 1 8 NPT 1 8 NPT h h h h ø30mm ø1 18 48mm 1 9 96mm 3 7 76mm 3 h h h h h h 94mm 3 7 h h 92mm 3 6 h h 46mm 1 8 h h 44mm 1 73 h h Monitor OVERLAY Easidew Online Hygrometer SIDE VIEW TOP VIEW FRONT VIEW 10 5mm 0 41 h h Figure 33 Dimensions ...

Страница 56: ...Easidew Online User s Manual 48 97094 Issue 18 5 March 2016 APPENDIX B Appendix B RS232 Data Communications Port Connections Optional ...

Страница 57: ...t port Screened RS232 communications cable max length permitted 12m 39 4ft 9 pin D Type RS232 connector 1 2 3 4 5 6 7 8 9 Tx Tx Rx Rx GND GND 9 Pin D Type Connector Process Indicator Rear Panel Figure 34 RS232 Connections 1 Strip both ends of the communications cable to expose the individual cable cores and the cable screen 2 Trim off the cable screening at the monitor end 3 Connect the Tx Rx and ...

Страница 58: ...Easidew Online User s Manual 50 97094 Issue 18 5 March 2016 APPENDIX C Appendix C EC Declaration of Conformity ...

Страница 59: ...Easidew Online User s Manual Michell Instruments 51 APPENDIX C Appendix C EU Declaration of Conformity ...

Страница 60: ...Easidew Online User s Manual 52 97094 Issue 18 5 March 2016 APPENDIX D Appendix D Quality Recycling Warranty Information ...

Страница 61: ...hich may be harmful to the environment Similarly we are increasingly using recyclable and or recycled material in our business and products wherever it is practical to do so To protect natural resources and to promote material reuse please separate batteries from other types of waste and recycle responsibly If batteries are not properly disposed of these substances can cause harm to human health a...

Страница 62: ... EU Directive 2011 65 EU Article 3 24 defines Control and Monitoring Equipment specifically as monitoring and control instruments designed exclusively for industrial or professional use RoHS2 EU Directive 2011 65 EU states the closing date for compliance of any Control and Monitoring Equipment product sold into the EU market place as 22nd July 2017 However the careful design policy of all Michell ...

Страница 63: ...ntains a hazardous material register in which MSDS data sheets are collated and we will check that our suppliers will comply to REACH requirements for all materials and substances we use in the processes of our manufacturing In the unlikely event that any chemicals of concern appear in our products in quantities greater than 0 1 of total mass per product we will immediately inform you by correspon...

Страница 64: ...g courses of action will be taken If the fault is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned If Michell Instruments determines that the fault is not covered under the terms of the warranty or if the warranty has expired an estimate for the cost of the repairs at standard rates will be provided Upon receipt of the owner s approval to...

Страница 65: ...Easidew Online User s Manual Michell Instruments 57 APPENDIX E Appendix E Return Document Decontamination Declaration ...

Страница 66: ...us chemicals YES NO Radioactive substances YES NO Other hazards YES NO Please provide details of any hazardous materials used with this equipment as indicated above use continuation sheet if necessary Your method of cleaning decontamination Has the equipment been cleaned and decontaminated YES NOT NECESSARY Michell Instruments will not accept instruments that have been exposed to toxins radio acti...

Страница 67: ...Easidew Online User s Manual Michell Instruments 59 NOTES ...

Страница 68: ...http www michell com ...

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