Summary of Contents for Lauper Instruments Easidew Online
- Page 1 Lauper Instruments AG Gas-Detection Irisweg 16B CH-3280 Murten Tel. +41 26 672 30 50 info@lauper-instruments.ch www.lauper-instruments.ch Easidew Online Dew-Point Hygrometer User’s Manual 97094 Issue 20 May 2020...
- Page 2 Please fill out the form(s) below for each instrument that has been purchased. Use this 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...
- Page 3 Easidew Online For Michell Instruments' contact information please go to www.michell.com © 2020 Michell Instruments This document is the property of Michell Instruments Ltd and may not be copied or otherwise reproduced, communicated in any way to third parties, nor stored in any Data...
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Page 4: Table Of Contents
Unpacking the Instrument ................... 3 2.1.1 Unpacking the Easidew Transmitter ..............4 2.1.2 Unpacking the Monitor .................. 4 2.1.3 Accessories Pack ................... 5 Easidew Online Components ................5 Monitor ......................6 2.3.1 Fault Conditions .................... 6 2.3.2 Monitor Controls and Indicators ..............7 2.3.3 Electrical Connections .................. - Page 5 General Operational Guidelines ................. 41 Maintenance and Calibration ................43 4.2.1 Clean Monitor .................... 43 Figures Figure 1 Easidew Online Monitor and Transmitter ............1 Figure 2 Unpacking Method ..................3 Figure 3 Transmitter Unpacking Method ..............4 Figure 4 Monitor Unpacking Method ................4 Figure 5 Accessories Pack ..................5...
- Page 6 Easidew Online User’s Manual Tables Table 1 Monitor Front Panel Controls and Indicators ..........7 Table 2 Summary of Electrical Connections ...............9 Appendices Appendix A Technical Specifications ................45 Dimensions ................. 47 Appendix B Quality, Recycling & Warranty Information ........... 49 Appendix C Return Document &...
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Page 7: Safety
Easidew Online User’s Manual Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated. -
Page 8: Abbreviations
Easidew Online User’s Manual Abbreviations The following abbreviations are used in this manual: alternating current pressure unit (atmosphere) barg pressure unit (=100 kP or 0.987 atm) gauge bara bar absolute °C degrees Celsius °F degrees Fahrenheit direct current foot (feet) -
Page 9: Introduction
Easidew Online User’s Manual INTRODUCTION INTRODUCTION The Easidew Online dew-point hygrometer is an instrument designed for the continuous online measurement of water dew point in gaseous sample streams, in a diverse range of applications. The system comprises a programmable monitor configured to accept a 4–20 mA current loop signal from the Michell Easidew ceramic metal-oxide dew-point transmitter. -
Page 10: Features
Easidew Online User’s Manual INTRODUCTION Features The Easidew Online Hygrometer is simple to use and install, and can be configured to meet specific needs. • 5/8” - 18 UNF process connections • Dew-point or ppm moisture content • IP66 (NEMA 4) Sensor and IP65 (NEMA 12) Monitor (front panel only) •... -
Page 11: Installation
Easidew Online User’s Manual INSTALLATION INSTALLATION It is essential that the connection of electrical and gas supplies to this instrument be undertaken by competent personnel. Unpacking the Instrument The Easidew instruments and accessories are packed into a box and the method of... -
Page 12: Unpacking The Easidew Transmitter
Easidew Online User’s Manual INSTALLATION 2.1.1 Unpacking the Easidew Transmitter NOTE: For environmental and operating conditions refer to Appendix A. Unpack the dew-point transmitter box as follows : Transmitter Unpacking Method Figure 3 Unscrew the cap (1) from the packing tube (6). Remove the foam block (2). -
Page 13: Accessories Pack
Easidew Online User’s Manual INSTALLATION 2.1.3 Accessories Pack The accessories pack is shown below. Figure 5 Accessories Pack Remove the screwdriver (1), the two leads (2) and (3) and the sample block (4) from the bag. Easidew Online Components On delivery please check that all the following standard components are present in the packing box. -
Page 14: Monitor
Easidew Online User’s Manual INSTALLATION Monitor The controls and indicators associated with the Easidew Online are located on the front panel of the monitor. Connections to the Easidew dew-point transmitter, the digital communications port and the external power supply are all made to the rear panel of the monitor. -
Page 15: Monitor Controls And Indicators
Easidew Online User’s Manual INSTALLATION 2.3.2 Monitor Controls and Indicators Item Description °F units indicator Indicates that the displayed dew-point reading is in degrees Fahrenheit. °C units indicator Indicates that the displayed dew-point reading is in degrees Celsius. Note: if neither the °Cdp nor °Fdp LED is lit, ppm is selected. -
Page 16: Electrical Connections
Easidew Online User’s Manual INSTALLATION 2.3.3 Electrical Connections Electrical connections to the Easidew Online system are as follows: Required: • AC power supply, 100 to 240 V AC (-15%, +10%), 50/60 Hz, 6 VA. A low voltage (24 V DC) option is also available. -
Page 17: Figure 8 Monitor Rear Panel Connections
Easidew Online User’s Manual INSTALLATION Monitor Rear Panel Connections Figure 8 Terminal Wire Colour Signal Supply Information Blue 0 V (GND) Transmitter Cable Screen Green 4–20 mA loop return Transmitter loop supply +24 V DC w.r.t. terminal 1 (+ve) User defined... -
Page 18: Ac Power Supply Input
Easidew Online User’s Manual INSTALLATION 2.3.4 AC Power Supply Input It is essential that the connection of electrical supplies to this instrument be undertaken by competent personnel. Connect the AC power supply to the monitor as shown in Figure 9 . Refer also to Table 2 which gives a summary of all the connections to the rear panel of the monitor. -
Page 19: Dc Power Supply Input (Optional)
Easidew Online User’s Manual INSTALLATION 2.3.5 DC Power Supply Input (Optional) Connect the DC power supply to the monitor as shown in Figure 10 . Refer also to Table 2 which gives a summary of all the connections to the rear panel of the monitor. -
Page 20: Transmitter Connection
Easidew Online User’s Manual INSTALLATION 2.3.6 Transmitter Connection Connect the transmitter cable to the monitor as shown below: 1 0 1 2 2 2 0 2 1 1 9 2 7 1 8 1 6 1 1 4 1 Monitor... -
Page 21: Signal Output Connections
2.3.7 Signal Output Connections The Easidew Online system has four possible signal outputs: Alarm 1 (ALr1), Alarm 2 (ALr2), the re-transmitted input signal (4–20 mA or 0–20 mA current loop signal depending upon instrument configuration) and the digital communications interface. -
Page 22: Mounting The Monitor
Easidew Online User’s Manual INSTALLATION 2.3.8 Mounting the Monitor The monitor is designed for panel mounting and requires a panel cut-out of 46 x 92mm (1.8 x 3.6”). The recommended panel thickness is 2 to 5mm (0.08 to 0.2”). To mount the unit, proceed as follows (refer to Figure 13): Pass the monitor (1) through the front of the panel (2). -
Page 23: Easidew Transmitter
Easidew Online User’s Manual INSTALLATION Easidew Transmitter NOTE: The transmitter’s sensing element is shown for illustration purposes only. Please keep the HDPE or SS guard fitted at all times, if possible. Sensing Element Process Connection Hexagonal Nut ... -
Page 24: Preparation Of The Transmitter Cable
Easidew Online User’s Manual INSTALLATION Preparation of the Transmitter Cable 2.5.1 Electrical Connections Connector Michell Standard Function Conductor Colour Green 4–20mA Signal Return (Power Supply -ve) Power Supply +ve Blue Ground, Cable Screen Connection This pin directly connects to the metal casing... -
Page 25: Sensor Cable Assembly
Easidew Online User’s Manual INSTALLATION 2.5.2 Sensor Cable Assembly For guidance on type of cable refer to Section 2.5.3. Assembly Instructions Remove the screw from the rear of the DIN connector housing. Lever the terminal block from the connector housing by inserting a small screwdriver in the notch on the front face of the terminal block. -
Page 26: Cable Selection For Self-Assembled Cables
Easidew Online User’s Manual INSTALLATION 2.5.3 Cable selection for self-assembled cables It is recommended to use 3-core screened cable. For short runs, a cable with individual conductor sizes of 24 AWG / 0.21mm would be a typical choice. For longer runs, a cable with larger conductors may be required to keep loop resistance within allowable limits. -
Page 27: Cable Connection
Easidew Online User’s Manual INSTALLATION Cable Connection When installing the connector, and to ensure that full ingress protection is achieved, the securing screw (with the O-ring and 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”). -
Page 28: Transmitter Mounting - Sample Block (Optional)
Easidew Online User’s Manual INSTALLATION 2.7.1 Transmitter Mounting – Sample Block (Optional) The following procedure must be carried out by a qualified installation engineer. To mount the transmitter into the sensor block (preferred method), proceed as follows, refer to Figure 19. -
Page 29: Transmitter Mounting - Direct Pipeline Connection
Easidew Online User’s Manual INSTALLATION 2.7.2 Transmitter Mounting – Direct Pipeline Connection The transmitter may be directly mounted into a pipe or duct, as shown in Figure 20. CAUTION: Do not mount the transmitter too close to the bottom of a bend where any condensate in the pipeline might collect and saturate the probe. -
Page 30: Transmitter Mounting - With Additional Process Connection Adapter
Easidew Online User’s Manual INSTALLATION 2.7.3 Transmitter Mounting – With Additional Process Connection Adapter The following procedure must be carried out by a qualified installation engineer. To mount the adapter into the transmitter, proceed as follows (see Figure 21) : 1. -
Page 31: Mounting The Sample Block And Transmitter
Easidew Online User’s Manual INSTALLATION Mounting the Sample Block and Transmitter 2.8.1 Sample Block Gas Connections Sample gas connections are made to the Gas In and Gas Out ports on the sample block see Figure 22. Either port on the sample block may be used as the Gas Input port (i.e. - Page 32 Easidew Online User’s Manual INSTALLATION Place the front ferrule (4) over the stainless steel tubing (1), bevelled end towards the adaptor (5). Push the stainless steel tubing (1) as far as it will go into the adaptor (5) and tighten up the locking nut (2) finger tight.
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Page 33: Operation
General Operational Information Operation of the Easidew Online is completely automatic and once set-up requires little or no operator intervention. The sample gas is taken into the sample block via the Gas In port and, in flowing... -
Page 34: Preparation For Operation
Easidew Online User’s Manual OPERATION Preparation For Operation 3.2.1 First-Time Operation To commence operation, proceed as follows: Check that electrical power supply and the relevant analog and alarm outputs are connected to external systems as required and as described in Section 2.7. -
Page 35: Monitor Setup
Easidew Online User’s Manual OPERATION Monitor Setup 3.3.1 Change alarm type (high/low) Alarm 1 is a low alarm, triggered when the reading drops below the set-point; whereas Alarm 2 is a high alarm, triggered when the reading exceeds the set-point. -
Page 36: Figure 24 Change Alarm Switching Logic
Easidew Online User’s Manual OPERATION Main Display (Change Alarm 2 Switching Logic) Main Main Display Display Change Alarm Switching Logic Figure 24 97094 Issue 20, May 2020... -
Page 37: Change Alarm Set-Points
Easidew Online User’s Manual OPERATION 3.3.2 Change alarm set-points Main display The alarm set-point levels are set-up from the program menu as follows Set x2 for Alarm 2 only (to exit to the main display without saving any new settings press the... -
Page 38: Analog Output: Change From 4-20Ma To 0-20Ma
Easidew Online User’s Manual OPERATION 3.3.3 Analog output: change from 4–20mA to 0–20mA The Easidew Online is provided with an analog current loop output module which buffers and re-transmits the current loop input signal from the dew-point transmitter. To change output from 4–20 mA to 0–20 mA:... -
Page 39: Set The Monitor To °F Dew-Point Mode
Easidew Online User’s Manual OPERATION 3.3.5 Set the monitor to °F dew-point mode To change the range and unit settings, Main Display (°C) proceed as follows. Figure 27 shows the operational key sequence. Press the key once, the display will... -
Page 40: Set The Monitor To Ppm Mode
Easidew Online User’s Manual OPERATION 3.3.6 Set the monitor to ppm mode To change the monitor to read parts per million by volume (ppm ) proceed as follows: Figure 30 shows the operational key sequence. CAUTION: The dew-point transmitter must be... -
Page 41: Monitor Limits When Unit Scaled To Ppm
Easidew Online User’s Manual OPERATION Main Display, e.g. °C Main Display, ppm(v) Figure 28 Set-up Monitor (to read ppm 3.3.7 Monitor Limits When Unit Scaled to ppm When unit is scaled to ppm the display will read zero when the mA input signal is between 3 and 4 mA. -
Page 42: Alarm Set-Point Limit Configuration
Easidew Online User’s Manual OPERATION 3.3.8 Alarm Set-Point Limit Configuration Main display The following procedure is used to set limits to which the alarm levels can be set and should be done after changing the range of the monitor. Figure 30 shows the operational key sequence. -
Page 43: Digital Communication Parameters Set-Up
OPERATION 3.3.9 Digital Communication Parameters Set-Up The default parameters for the Easidew Online instrument are as follows: Default Address = 1, Baud rate = 9600, Parity = None, Stop bits = 1 To change these parameters, proceed as follows: Figure 29 shows the operational key sequence. -
Page 44: Figure 30 Set-Up Data Communications Parameters
Easidew Online User’s Manual OPERATION Main display Set Parity 0000 = None 0001 = Odd 0002 = Even Set number of Set Address stop bits Range between 0000 = 1 stop bit 0001 and 0247 0001 = 2 stop bits Set baud Main Display (°F) -
Page 45: Modbus Rtu Over Rs485 Communications
Easidew Online User’s Manual OPERATION Modbus RTU over RS485 Communications All the data values relating to the monitor are stored in 16-bit wide input registers. Modbus RTU implemenation This is a partial implementation of the Modbus RTU Standard with the following code... - Page 46 Easidew Online User’s Manual OPERATION Example: Reading the displayed value on the front of the monitor Request by master (PC): 0x 01 04 0000 0001 31CA 01 = Modbus Slave Address / Device ID 04 = Function Code 4 – Read Input Register...
- Page 47 Easidew Online User’s Manual OPERATION Example: Using Baseblock COMTest Pro to read the displayed value on the front of the monitor The screenshots below show how to configure Baseblock COMTest Pro. A useful free tool for troubleshooting Modbus communications. Download from: https://www.baseblock.com/PRODUCTS/comtestpro.htm...
- Page 48 Easidew Online User’s Manual OPERATION Further Reading For more information about the Modbus RTU protocol please see recommended resources below: http://www.simplymodbus.ca/FAQ.htm is an excellent resource covering the basics of the Modbus protocol. Full descriptions of the function codes (including FC04) can be found in the sidebar.
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Page 49: Good Measurement Practice
MAINTENANCE GOOD MEASUREMENT PRACTICE The Easidew Online Hygrometer is designed to operate in a flowing gas stream and is suitable for the measurement of the moisture content of a wide variety of gases. In general, if the gas (in conjunction with water vapor) is not corrosive to ceramics or base metals then it will be suitable for measurement by the Easidew Online. - Page 50 Generally, if the sample gas (in conjunction with water vapor) is not corrosive to base metals, it will be suitable for measurement by the Easidew Online system. Gases containing entrained solids should be filtered before application to the sample block.
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Page 51: Maintenance And Calibration
(see Figure 3) and returned to Michell Instruments, either directly, or via their authorized agent. Easidew transmitters are fully interchangeable and can be used with any Easidew Online monitor. Transmitter interchangeability is not affected by cable length. - Page 52 Easidew Online User’s Manual APPENDIX A Appendix A Technical Specifications 97094 Issue 20, May 2020...
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Page 53: Appendix A Technical Specifications
Easidew Online User’s Manual APPENDIX A Appendix A Technical Specifications Monitor Performance Measurement Range -100 to +20°C (-148 to +68°F) dew point (Dew Point) Electrical Specifications Input Signal 4–20 mA input from Michell dew-point transmitter 4–20 mA (or –20mA) (2-wire connection, current source) - Page 54 Easidew Online User’s Manual APPENDIX A Transmitter Performance Measurement Range (Dew Point) -100 to +20ºCdp (-148 to +68ºFdp) Accuracy (Dew Point) ±2ºCdp (±3.6ºFdp) Response Time 5 mins to T95 (dry to wet) Repeatability 0.5ºCdp (0.9ºFdp) Calibration 13-point calibration with traceable point calibration certificate Electrical Specification 4–20 mA (2-wire connection current source)
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Page 55: Figure 33 Dimensions
Easidew Online User’s Manual APPENDIX A Dimensions 1/8” NPT 132mm (5.19”) 46mm (1.81”) ø27mm 10mm (0.39”) (1.06”) ø25.4 x 2mm (ø1 x 0.07”) 5/8” 18 UNF 55.2mm 1/8” NPT 2.2” 10mm (0.39”) Transmitter 5/8”... - Page 56 Easidew Online User’s Manual APPENDIX B Appendix B Quality, Recycling & Warranty Information 97094 Issue 20, May 2020...
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Page 57: Appendix B Quality, Recycling & Warranty Information
Easidew Online User’s Manual APPENDIX B Appendix B Quality, Recycling & Warranty Information Michell Instruments is dedicated to complying to all relevant legislation and directives. Full information can be found on our website at: www.michell.com/compliance This page contains information on the following directives: •... - Page 58 Easidew Online User’s Manual APPENDIX D Appendix C Return Document & Decontamination Declaration 97094 Issue 20, May 2020...
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Page 59: Appendix C Return Document & Decontamination Declaration
Easidew Online User’s Manual APPENDIX D Appendix C Return Document & Decontamination Declaration Decontamination Certificate IMPORTANT NOTE: Please complete this form prior to this instrument, or any components, leaving your site and being returned to us, or, where applicable, prior to any work being carried out by a Michell engineer at your site. - Page 60 Lauper Instruments AG Gas-Detection Irisweg 16B CH-3280 Murten Tel. +41 26 672 30 50 info@lauper-instruments.ch www.lauper-instruments.ch...