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Liquidew I.S. User Manual

97092 Issue 5.3, September 2021

INSTALLATION

2.2

Operating Requirements

2.2.1 Environmental Requirements

The Liquidew I.S. sensor assembly is intrinsically safe and designed to be installed on-

site, indoors or outdoors, directly at the point of measurement within a Hazardous Area.

The sensor assembly is ATEX, IECEx and

QPS

certified. To operate correctly, the sensor

assembly must be installed within a suitable sampling system (Michell Instruments can

supply standard and custom designed sampling systems).

The Liquidew I.S. control unit is NOT designed for use in a Hazardous Area and should

only be installed in a safe area. The control unit is intended for indoor installation only

and operates within environmental limits of 0...+50 °C (+32...+122 °F) and <90%RH.

The control unit contains built-in isolation barriers permitting connection, direct from

the Hazardous Area, of the Liquidew I.S. sensor assembly.

2.2.2 Power Requirement

The Liquidew I.S. control unit can be ordered for either of the following electrical

supplies:

•

85...265 V AC, 47/63 Hz @ 4W max 10W

OR
•

10...72 V DC @ 4W max 10W

The Liquidew I.S. sensor assembly is powered through the 2-wire signal cable directly

from the control unit.

Please refer to the Liquidew I.S. Premium Sampling System Instructions for the power

requirement of the sampling system.

2.3

Mounting

2.3.1 Control Unit Installation

The Liquidew I.S. control unit is contained in a 19” sub-rack case (size 3U). It should be

installed in a 19” rack using the mounting holes provided. It must be placed in a position

free from any appreciable vibration and shaded from direct sunlight.

NOTE: The materials and construction of the control unit allow for operation

in an indoor, clean, non-hazardous only, control room environment.

side

w PR

O I.S.

ocess De

wpoint T

ransmitt

20mm

(0.8”)

328mm

(12.9”)

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL 4

483mm

(19”)

375mm + 100mm for cable clearance

(14.75” + 3.9”)

132mm

(5.2”)

Sample port

1/8” NPT (F)

Figure 5

Dimensions of the Control Unit

Summary of Contents for Michell Instruments Liquidew I.S.

Page 1: ...t Menu Select Display Alarms 4 3 2 1 LIQUIDEW I S Menu Select Display Alarms 4 3 2 1 LIQUIDEW I S Menu Select Display Alarms 4 3 2 1 LIQUIDEW I S Menu Select Display Alarms 4 3 2 1 LIQUIDEW I S CHANNEL 1 CHANNEL 3 CHANNEL 2 CHANNEL 4 Liquidew I S Process Moisture Analyzer User Manual ...

Page 2: ... contacting Michell Instruments for service purposes Product Name Order Code Serial Number Invoice Date Installation Location Tag Number Product Name Order Code Serial Number Invoice Date Installation Location Tag Number Product Name Order Code Serial Number Invoice Date Installation Location Tag Number ...

Page 3: ...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 Liquidew I S Process Moisture Analyzer For Michell Instruments contact information please go to www michell com ...

Page 4: ...stem Installation 14 2 4 Wiring 15 2 4 1 Overall Wiring Arrangement 15 2 4 2 Control Unit Wiring 16 2 4 2 1 Power Supply Input Connection 18 2 4 2 2 Sensor Signal Input Connection 20 2 4 2 3 Analog Output Connection 21 2 4 2 4 Alarm Output Connection 22 2 4 2 5 RS485 Port Connection 23 2 4 3 Sensor Assembly Wiring 24 2 4 3 1 Dew point Transmitter Wiring 24 2 4 3 2 Temperature Transmitter Wiring 27...

Page 5: ...nts of the Liquidew I S 4 Figure 4 User Interface 5 Figure 5 Dimensions of the Control Unit 10 Figure 6 Rack Mounting Method 11 Figure 7 Liquidew I S Sensor Assembly 12 Figure 8 Overall Wiring Arrangement 15 Figure 9 Control Unit Electrical Connections 17 Figure 10 POWER INPUT Socket 18 Figure 11 POWER INPUT Connector Block 19 Figure 12 SENSOR INPUTS Connector Block 20 Figure 13 OUTPUT Connector B...

Page 6: ...dous Area Certification 59 D 1 Product Standards 59 D 2 Product Certification 59 D 3 Global Certificates Approvals 59 D 4 Terminal Parameters 60 D 5 Special Conditions 60 D 6 Maintenance and Installation 60 Appendix E System Drawings 62 E 1 Baseefa Approved System Drawing 62 E 2 QPS Approved System Drawing 63 Appendix F Quality Recycling Warranty Information 65 Appendix G Return Document Decontami...

Page 7: ...pecifications to be applied to the instrument 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 exercised during maintenance and the disposal of certain p...

Page 8: ...e Nm newton meter mA milli Ampere psig pressure in pound s per square inch gauge ppmW parts per million by weight T temperature V Volts Warnings The following general warnings listed below are applicable to this instrument They are repeated in the text in the appropriate locations Where this hazard warning symbol appears in the following sections it is used to indicate areas where potentially haza...

Page 9: ... is 0 500 parts per million by weight ppmW There are 8 pre set liquid options available for the CS data used in moisture calculation together with 2 user defined solutes and an ability to mix any 2 liquids from the list Four alarm relay contacts are provided which are user configurable in set point and operating mode The current output is factory set at 4 20 mA The Liquidew I S Control Unit must b...

Page 10: ...accuracy with each sensor calibrated across the entire measurement range and certified traceable to NPL UK and NIST USA Certified intrinsically safe Replaceable sensor element with Michell Calibration Exchange Service for professional scheduled and low cost recalibration to minimize downtime and cost Up to four independent measurement channels with any combination of moisture in gas and moisture i...

Page 11: ...uidew I S the amount of dissolved moisture dispersed throughout the immiscible process liquid is measured on line in real time in units of ppmW moisture content using Henry s Law According to Henry s Law C x PW C S ___ Psat Where C Moisture content C S Saturation moisture content at the analysis temperature PW Water vapor pressure from dew point sensor measurement Psat Saturation water vapor press...

Page 12: ...ssembly Control Unit Up to four channels can have any combination of Liquidew I S and Promet I S a Temperature transmitter b Sensor block c Dew point transmitter d User interface e Electrical connections to hazardous area f Electrical connections non hazardous Figure 3 Major Components of the Liquidew I S Promet I S is a sister product of the Liquidew I S and is used for moisture in gas measuremen...

Page 13: ...Alarms 4 3 2 1 3 9 1 9 C 4 C LIQUIDEW I S Figure 4 User Interface The operation of the function keys are shown below and more information can be found in Section 3 Menu key Menu The Menu key is used to enter and exit the set up menu At any level within the set up menu press and hold the Menu key to return to the default screen Select key Select The Select key is used to enter the sub menu and to c...

Page 14: ... pages in the top and sub level menus and to decrease values in sub level menus Display key Display The Display key is used to change the display unit see Section 3 2 2 The four LED alarm indicators will light up when the specific alarm relay is activated Settings for the alarm relays are explained in Section 3 99 ...

Page 15: ...olated by built in galvanic type I S barriers Signal Output There are two 4 20 mA linear signal output channels The output channel 1 is used for the dew point moisture or temperature signal with configurable ranges Output channel 2 has a fixed temperature signal and cannot be configured There is one RS485 Modbus RTU digital communication port Please refer to Appendix B Alarm Output There are four ...

Page 16: ...rements for the sample liquid going into the sensor block are as follows Temperature 0 40 C 32 104 F maximum 60 C 140 F NOTE Sample temperature must be above the moisture saturation temperature of the sample fluid Maximum pressure 45 MPa 450 barg 6526 psig Flow rate 0 1 0 3 l min 0 026 0 079 GPM NOTE Contact Michell Instruments if you wish to order a specific sampling system Please refer to the Li...

Page 17: ...I S sensor assembly if a sampling system has been ordered the sensor assembly should already be mounted in the sampling system User manual Certificates of calibration and conformity Power lead only for 85 265 V AC version c Remove the Liquidew I S sensor assembly from the box d Lift out the control unit together with its end packing pieces e Remove the end packing pieces and set the control unit d...

Page 18: ... Liquidew I S sensor assembly 2 2 2 Power Requirement The Liquidew I S control unit can be ordered for either of the following electrical supplies 85 265 V AC 47 63 Hz 4W max 10W OR 10 72 V DC 4W max 10W The Liquidew I S sensor assembly is powered through the 2 wire signal cable directly from the control unit Please refer to the Liquidew I S Premium Sampling System Instructions for the power requi...

Page 19: ... the internal rack wiring ensuring that there is sufficient free cable to permit withdrawal of the instrument from the rack d Slide the instrument into the rack and support its weight while the four fixing screws are inserted e Ensure that the front panel of the instrument is flush and square with the front of the rack and tighten the fixing screws f Insert the terminal blocks into their respectiv...

Page 20: ...oint transmitter Easidew PRO I S 2 Temperature transmitter 3 Sensor block To assemble proceed as follows a Remove the protective cap on the dew point transmitter Easidew PRO I S before installation and retain for future use Take care to prevent any contamination of the sensor before installation do not touch or handle the sintered guard located on the tip of the Easidew PRO I S b The dew point tra...

Page 21: ...sor uppermost to minimize spillage of sample liquid when removing the moisture sensor for calibration maintenance c Sample liquid connections are made via the process inlet and process outlet ports as shown in Figure 7 Both the process inlet and outlet ports are 1 8 NPT female ports Michell recommends using Swagelok 6mm to 1 8 NPT ordering code SS 6M0 1 2 or 1 4 to 1 8 NPT ordering code SS 400 1 2...

Page 22: ...60 C 4 140 F preferably 0 40 C 32 104 F for optimum performance Consult Michell Instruments for special heating or cooling options if the temperature is outside of this range b Fasten the sampling system to a vertical surface or instrument stand using the four M8 size mounting holes at each corner c Connect the liquid inlet and outlet tubing to the fittings of the inlet outlet ports on the samplin...

Page 23: ...ircuits which could be at high potential 2 4 1 Overall Wiring Arrangement EASIDEW PRO I S DEW POINT TX 4 3 2 1 TEMPERATURE TX HAZARDOUS AREA SAFE AREA CONTROL UNIT SENSOR INPUTS ALARMS OUTPUT COMMS POWER SOCKET or POWER CONNECTOR mA V V NO NO NO NO mA mA mA NC NC COM COM 0V 5 3 2 SCN SCN L N E ALARM 2 ALARM 4 ALARM 1 ALARM 3 OUTPUT 1 OUTPUT 2 RS 485 90 264 VAC POWER SUPPLY BY OTHERS GND A B 10 72 ...

Page 24: ...for four individual channels HAZARDOUS AREA INFORMATION The only connections on the control unit which can take cables from hazardous area are the connectors labelled SENSOR INPUTS ALL OTHER CONNECTORS MUST NOT BE CONNECTED TO CABLES FROM HAZARDOUS AREA NOTE Make sure channels are connected correctly Connections for each channel are identical The following text will only refer to one channel ...

Page 25: ...to 265 VAC version Power input connector block 10 to 72 VDC version OR ALARMS OUTPUT LOCK OFF ON mA1 0V mA2 COMMS RS485 SP2 SP4 SP1 SP3 NO NC COM NO NO NC COM NO SENSOR INPUTS Dew Point Temp Pres HAZARDOUS AREA CONNECTIONS EASIDEW PRO I S DEWPOINT TRANSMITTER SYSTEM CERTIFICATE No s Baseefa07Y0027 Ex ia IIC T4 20C TO 60C mA V mA V Figure 9 Control Unit Electrical Connections ...

Page 26: ...d of connection is as follows a Turn off the AC power Ensure that both ends of the power cable are potential free i e not connected to an AC power supply b Check that the ON OFF switch is switched to OFF c Push the IEC connector firmly into the POWER INPUT socket d Connect the free end of the power cable to a suitable AC power supply source voltage range 85 265 V AC 47 63 Hz and switch on the AC s...

Page 27: ...the power cable exposing approximately 6mm 0 2 the use of crimps wire ferrules is recommended d Insert the 24 V DC lead into the 24V terminal way on the terminal block and tighten the screw e Insert the 0V lead into the 0V terminal way on the terminal block and tighten the screw f Check that the wiring has been completed correctly g Push the terminal block firmly back into the POWER INPUT socket N...

Page 28: ...k labelled SENSOR INPUTS as shown below Figure 12 SENSOR INPUTS Connector Block The method of connection is as follows a Remove the terminal block from the SENSOR INPUTS socket b Strip back the wires of the dew point transmitter signal cable exposing approximately 6mm 0 2 the use of crimps wire ferrules is recommended c Insert the 4 20 mA lead into the Dew Point V terminal way on the terminal bloc...

Page 29: ...le exposing approximately 6mm 0 2 the use of crimps wire ferrules is recommended c Insert the 4 20 mA lead into the mA1 terminal way on the terminal block and tighten the screw d Insert the 4 20 mA lead into the 0V terminal way on the terminal block and tighten the screw e Strip back the wires of the temperature signal cable exposing approximately 6mm 0 2 the use of crimps wire ferrules is recomme...

Page 30: ... C single pole double throw relays The method of connection is as follows a Remove the terminal block from the ALARMS socket b Strip back the wires of the Alarm 1 cable exposing approximately 6mm 0 2 the use of crimps wire ferrules is recommended c Insert the N O connection lead into the SP1 NO terminal way on the terminal block and tighten the screw d Insert the N C connection lead into the SP1 N...

Page 31: ...rminal block and tighten the screw c Insert the common lead into the SP3 COM terminal way on the terminal block and tighten the screw d Repeat operations a to c for connecting the Alarm 4 cable to the SP4 terminals e Check that the wiring has been completed correctly f Push the terminal block firmly back into the ALARMS socket 2 4 2 5 RS485 Port Connection The RS485 connection is a push fit socket...

Page 32: ... Easidew PRO I S in any hazardous environment ensure that personnel are completely familiar with the above standards relating to the certification of this instrument and also with the further information relating to intrinsically safe apparatus to be found in standard EN60079 14 1997 or equivalent and up to date codes of practice in the country of installation Installation of the Easidew PRO I S M...

Page 33: ...hould be applied so that there is no possibility of a conductor strand of a core becoming free When the crimp wire ferrules are applied they should have a minimum of two positions of crimping After the crimp wire ferrules are applied they should be trimmed to a length of 5mm 0 2 see Figure 16 10 mm Figure 15 Crimped Wires Figure 16 Cut to 5mm b Cable connection to the dew point transmitter is made...

Page 34: ...able gland Figure 18 Dew Point Transmitter Pin Assignment Drawing Always connect the 4 20 mA return signal to a suitable load in this case back into the control unit before the power is applied Without this connection the transmitter may be damaged if allowed to operate for prolonged periods The maximum load is 500 Ω at 24 V or 250 Ω at 12 V When the crimps wire ferrules are installed into the con...

Page 35: ... information in EN60079 14 1997 or equivalent codes of practice in the country of installation If the temperature transmitter is not ordered together with the analyzer it is the user s responsibility to make sure that the temperature transmitter is compatible with the I S barrier in the control unit Refer to ATEX QPS IECEx certificates for the dew point and temperature transmitters connection cabl...

Page 36: ...gnations are marked adjacent to each pin 4 20 mA lead 4 20 mA lead Supply 4 20 mA mA V Dew Point Temp SENSOR INPUTS Block SCN Figure 20 Temperature Transmitter Pin Assignment Drawing d Tighten the cable gland 5 around the cable Ensure that the sealing is not damaged and that the cable gland and seals are assembled correctly in order to ensure ingress protection e Install and tighten the terminal h...

Page 37: ... instrument must be connected to the correct electrical power supply sensor signal input relevant analog and alarm outputs as described in Section 2 On delivery the instrument will have been set up with a standard set of default parameters defining the operation of the analyzer These parameters can be changed as required by means of the Set up menus 3 2 Start Up 3 2 1 Function Keys Activation Ther...

Page 38: ...ted The default main reading page displays sample temperature C and sample dew point C It is possible to change the display unit of the Main Reading Page using the Display key see Section 1 4 1 At the default screen pressing the Display key will change the units of measurement readings in sequence as shown below Temperature o C Dew pointo C Temperature o C Moisture ppmW Temperature o F Temperature...

Page 39: ... the analyzer power is turned off and on again NOTE The changing of the units at the Main Reading Page will change the units in OUTPUT SETUP and FAULT SETUP automatically It will not affect the ALARM SETTINGS 3 2 3 Sample Flow Start Up Follow the Liquidew I S Premium Sampling System Instructions to establish the sample flow of 0 1 0 3 l min 0 026 0 079 GPM If the Liquidew I S Analyzer is to be fit...

Page 40: ...1 User 2 Mixing MAIN READING PAGE LIQUID SET UP OUTPUT SET UP Display Menu Select Select Select Select Select Select CHANGE UNITS CHANGE DISPLAY BRIGHTNESS CHANGE ALARM SETTINGS User 1 User 2 Mixing Ratio 1 20C point 10C point 70C point Select Select Select Select Select Select Select Source Zero Span Ratio 2 Menu Select Menu Menu Menu Select Select Select Select 20C point 10C point 70C point Sele...

Page 41: ...GE MAIN MENU SETTINGS SP_1 BRI SP_2 Select Select Select Select SP_3 Select Select Select Select SP_4 SPC_1 Source 000 high 100 low 000 high 100 low 000 high 100 low 000 high 100 low 010 010 010 010 SPC_2 SPC_3 SPC_4 Main Reading Page Select Select Select Select Select Select Menu Select Select Source Select Select Source Select Select Source Figure 22 Menu Maps ...

Page 42: ...ayed Name Butane N BUTANE Propane N PROPANE Hexane N HEXANE Benzene BENZENE Toluene TOLUENE Propylene PROP 1 ENE Isobutane I BUTANE Butadiene 1 3 BUTADIENE 1 3 User 1 USER 1 User 2 USER 2 Mixing MIXING Table 1 Liquid List 3 5 1 Liquid Selection From the Main Reading Page press the Menu key to enter the main menu The first setting option is L I Q U I D S E T U P Press the Select key to enter this s...

Page 43: ...r the CS value is at 0 C 0 C CS value Temp point C c Use the and keys to adjust the CS value d Press the Select key to confirm The display will then display the next temperature point 10 C 1 0 C CS value Temp point C e Follow steps c and d to enter the CS value for the 10 C temperature point and then repeat for 20 C 30 C 40 C 50 C 60 C If CS values are not available for temperature points outside ...

Page 44: ...isplay will show the name of the currently selected first liquid The full name of the liquid will scroll across the bottom line of the display P R O P A N P R O P A N E c Change the selection by scrolling through the list using the and keys d When the required liquid is on the display press the Select key to confirm The display will then show the mixing ratio for this selected first liquid 0 2 5 R...

Page 45: ...d 0 7 5 R A T I O 2 This mixing ratio for the second liquid cannot be adjusted as it is depends on the ratio for the first liquid Ratio 2 1 Ration 1 i Press the Select key to return to the Main Reading Page Calculations will then based on the defined MIXING solubility profile NOTE Follow Section 3 5 2 to define the USER 1 USER 2 solubility profile first if you want to select them for mixing NOTE T...

Page 46: ...ter is the mA output signal source The display will then change to the name of the currently selected source The full name of the output source will scroll across the bottom line of the display M O I S T S O U R C E M O I S T M O I S T U R E The user can select moisture signal dew point signal or temperature signal as the output source a Change the selection by scrolling through these three option...

Page 47: ... 2 The value will be automatically converted based on the new units selected 3 6 3 Output Range SPAN Value Settings 0 0 0 S P A N a Use the and keys to adjust the SPAN value b Press the Select key to confirm The display will then return to the Main Reading Page NOTE The output range SPAN value will be in ppmW dew point or temperature depending on the specific source moisture signal dew point signa...

Page 48: ... Fault Alarm Press the Select key to enter the FAULT SETUP sub menu The first parameter is the minimum dew point value 1 0 0 0 C M I N _ D P a Use the and keys to adjust the minimum dew point value b Press the Select key to confirm The display will then show the second fault alarm parameter which is the maximum dew point value NOTE The units will be either C ºC or F ºF depending on the unit select...

Page 49: ...pending on the unit selection in the Main Reading Page refer to Section 3 2 2 The value will be converted automatically based on the new units selected 3 8 4 Maximum Temperature Value for the Fault Alarm 5 0 0 C M A X _ T a Use the and keys to adjust the maximum temperature value b Press the Select key to confirm The display will then return to the Main Reading Page NOTE The units will be either C...

Page 50: ...y will then show the Alarm Set Point for Alarm Relay 2 c Repeat steps a and b to adjust the set point for Alarm Relay 2 Alarm Relay 3 and Alarm Relay 4 accordingly d After Alarm Set Point SP_4 for Alarm Relay 4 is set press the Select key to confirm The display will then show the Alarm Control Setting Page SPC_1 for Alarm Relay 1 NOTE The Alarm Set Point could be in ppmW dew point ºC ºF or tempera...

Page 51: ...m Set Points by setting the control code 0 0 0 S P C _ 1 1 0 0 S P C _ 1 a Use the and keys to adjust the control code Code 000 Alarm type high Activates the alarm when the measurement value is above Alarm Set Point SP_1 Code 100 Alarm type low Activates the alarm when the measurement value is below Alarm Set Point SP_1 b Press the Select key to confirm The display will then change to the Alarm Co...

Page 52: ...ions using the and keys d When the required source is shown on the display press the Select key to confirm The alarm will then switch to the selected source The display will then return to the Alarm Control Setting page 0 1 0 S P C _ 1 e Use the and keys to change the control code back to 000 or 100 depending on the alarm type high low f Press the Select key to confirm The display will then change...

Page 53: ... be adjusted from the BRIGHTNESS ADJUSTMENT page From the Main Reading Page press and hold the Select key then press to enter the BRIGHTNESS ADJUSTMENT page 2 B R I a Use the and keys to adjust the display brightness b Press the Select key to confirm the adjustment Press the Select key again to return to the Main Reading Page ...

Page 54: ...Liquidew I S User Manual 46 97092 Issue 5 3 September 2021 APPENDIX A Appendix A Technical Specifications ...

Page 55: ...0 01 l min 0 003 GPM Max 10 l min 2 64 GPM 0 1 0 3 l min 0 026 0 079 GPM recommended Calibration Traceable to British NPL and American NIST National Humidity Standards Control Unit Display Two line 6 digits LED displaying moisture content dew point user toggle and temperature Analog Output Two 4 20 mA max load 500 Ω user configured for parameter unit and range Output 1 21 mA when a high or low err...

Page 56: ...on Dimensions 800 x 600 x 300mm 31 5 x 23 6 x 11 8 h x w x d Enclosure Mounting Stainless steel wall mounting brackets Enclosure Ingress Protection IP66 Enclosure Temperature Control Heater thermostat options for fixed set point 20 C 68 F or adjustable set point range 0 to control 50 C 32 122 F Heater Power Supply 110 120 or 220 240 255 V AC 47 63 Hz Power consumption 100 W max Operating Environme...

Page 57: ...ll Instruments 49 APPENDIX A A 1 Dimensional Drawings Easi Process 20mm 0 8 CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 483mm 19 375mm 100mm for cable clearance 14 75 3 9 3U 132mm 5 2 Sample port 1 8 NPT F Figure 23 Dimensional Drawings ...

Page 58: ...Liquidew I S User Manual 50 97092 Issue 5 3 September 2021 APPENDIX B Appendix B Serial Communications ...

Page 59: ...d decode the response RS485 Wiring The Liquidew I S monitor uses a 2 wire RS485 connection Pin Name Liquidew DB9 Pin A 3 B 2 GND 5 Pin numbers in the manual refer to standard pins on the DB9 D Sub connector on the rear panel of the MCU Male DB9 Pinout Liquidew I S Monitor on MCU Panel 1 B A GND 2 3 4 5 6 7 8 9 It will be necessary to match up the A B Differential data pair and GND 0 V pins with th...

Page 60: ...o 000 Setting the Communications Protocol If the instrument is set to ASCII send sw132 1 to set to Modbus If the instrument is set to Modbus send 0 to register 40132 132 to set to ASCII Using the Front Panel Firstly follow the instructions in Appendix C to unlock the CODE settings on the monitor front panel a Press the Select and keys simultaneously to display the BRI brightness menu b Press the S...

Page 61: ...USER_MEMORY_7 5127 45127 COMPOUND_1 USER_MEMORY_10 5130 45130 RATIO_1 USER_MEMORY_11 5131 45131 COMPOUND_2 USER_MEMORY_12 5132 45132 RATIO_2 USER_MEMORY_13 5133 45133 OP_SOURCE USER_MEMORY_15 5135 45135 FAULT_OUTPUT SP5_RESET_VALUE 119 40643 40644 SETPOINT_1 Alarm Set Point 1 6 40535 40536 SETPOINT_2 Alarm Set Point 2 7 40537 40538 SETPOINT_3 Alarm Set Point 3 8 40539 40540 SETPOINT_4 Alarm Set Po...

Page 62: ...st significant word and 40518 is the most significant word It should also be noted that the actual address is that stated minus 40000 i e 40517 is physically 517 Example Getting the dew point value using Modbus RTU Register Numbers Function Register Name Texmate ASCII Modbus RTU BARG RESULT 254 40515 40516 Dew Point_C CH1 253 40517 40518 psig CH2 252 40519 40520 There is often an offset of 1 for t...

Page 63: ...Liquidew I S User Manual Michell Instruments 55 APPENDIX C Appendix C Modbus RTU Comms ...

Page 64: ...dew I S monitor turning off code blanking WARNING It is recommended that code blanking is switched back ON after making any required changes to the configuration codes Adjusting configuration codes without the express written instruction of Michell Instruments may result in damage to the monitor that is NOT covered under warranty ...

Page 65: ...Liquidew I S User Manual Michell Instruments 57 APPENDIX C ...

Page 66: ...Liquidew I S User Manual 58 97092 Issue 5 3 September 2021 APPENDIX D Appendix D Hazardous Area Certification ...

Page 67: ... Class I ZONE 1 Hazardous Locations and has been assessed as being so by QPS D 1 Product Standards This product conforms to the Standards BS EN60079 0 2012 A11 2013 CSA C22 2 No 60079 0 19 BS EN60079 11 2012 CSA C22 2 No 60079 11 14 FM Class 3600 2018 CSA 61010 1 12 R2017 FM Class 3610 2010 UL61010 1 IEC60079 0 2011 UL60079 0 IEC60079 11 2011 UL60079 11 D 2 Product Certification This product is at...

Page 68: ...ge so must not be rubbed with a dry cloth or cleaned with solvents 3 The Easidew PRO I S Dew Point Transmitter does not withstand the 500 V AC insulation test to frame This must be taken into account when installing the equipment D 6 Maintenance and Installation The Easidew PRO I S must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms...

Page 69: ...Liquidew I S User Manual Michell Instruments 61 APPENDIX E Appendix E System Drawings ...

Page 70: ...E SIGNAL WIRES WITH THE EASIDEW DISCONNECTED MUST BE ABLE TO WITHSTAND A 500V AC INSULATION TEST AT INSTALLATION OF SYSTEM PERFORM A RISK ASSESSMENT IN ACCORDANCE WITH EN60079 25 2004 cl 10 AND INSTALL LIGHTENING PROTECTION AS NECESSARY THE SYSTEM MUST BE MARKED WITH A DURABLE LABEL THE LABEL SHOULD APPEAR ON OR ADJACENT TO THE PRINCIPAL ITEM OF ELECTRICAL APPARATUS IN THE SYSTEM OR AT THE INTERFA...

Page 71: ...mH H ohm μ μ THE ISOLATION OF THE SIGNAL WIRES WITH THE EASIDEW DISCONNECTED MUST BE ABLE TO WITHSTAND A 500V AC INSULATION TEST 46 nF 613 nF 2 11 F μ Ω Ω Ω μ μ μ 54 H 217 H 435 H THE INSTALLATION MUST COMPLY WITH THE INSTALLATION PRACTICES OF THE COUNTRY OF USE i e ANSI ISA RP12 6 INSTALLATION OF INTRINSICALLY SAFE SYSTEMS FOR HAZARDOUS CLASSIFIED LOCATIONS AND THE NATIONAL ELECTRICAL CODE ANSI N...

Page 72: ...Liquidew I S User Manual 64 97092 Issue 5 3 September 2021 APPENDIX F Appendix F Quality Recycling Warranty Information ...

Page 73: ...ion can be found on our website at www michell com compliance This page contains information on the following directives Anti Facilitation of Tax Evasion Policy ATEX Directive Calibration Facilities Confl ict Minerals FCC Statement Manufacturing Quality Modern Slavery Statement Pressure Equipment Directive REACH RoHS3 WEEE2 Recycling Policy Warranty and Returns This information is also available i...

Page 74: ...Liquidew I S User Manual 66 97092 Issue 5 3 September 2021 APPENDIX G Appendix G Return Document Decontamination Declaration ...

Page 75: ...s 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 activity or bio...

Page 76: ...http www michell com www ProcessSensing com ...

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