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Related Manuals for Shaw Superdew 3
Summary of Contents for Shaw Superdew 3
- Page 1 Superdew 3 Hygrometer Operating Instructions...
- Page 2 Shaw Moisture Meters (UK) Ltd Len Shaw Building Bolton Lane Bradford BD2 1AF England t. +44 (0) 1274 733582 f. +44 (0) 1274 370151 e. mail@shawmeters.com www.shawmeters.com...
- Page 3 Unpacking your Shaw Moisture Meters Superdew 3 Please examine the Superdew 3 package for any damage or mishandling. If any damage is evident please notify the carrier and the Shaw Moisture Meters representative from where this unit was purchased. You should have received (if ordered): •...
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Page 4: Table Of Contents
Calibration (Sensor Ranges up to +20°C Dewpoint) ………… Monitoring the System …………………………………………….. 11/12 Faults / Errors ……………………………………………………….. Superdew 3 Specification ………………………………………… Appendix A – Superdew 3 Setup Menu Flow Diagram Appendix B – Alarm 1 & 2 Hotkey Flow Diagram Appendix C – Units Hotkey Flow Diagram... -
Page 5: General Information
The Superdew 3 has an autocal potentiometer to perform auto-calibration of sensors. • The Superdew 3 has two full range alarms that can be set as rising or falling edge triggered. These alarms have visual indication (LEDs) and activate changeover relays for remote indication or control. -
Page 6: Safety Information
Safety Information Read the safety information below, before installation. Warning Hazardous voltages may be present on instrument terminals. The equipment must be installed by suitably qualified personnel and the instrument must be mounted in a position that provides protection behind the panel to at least IP20. Isolation The power supply terminals and associated internal circuitry are isolated from all other parts of the equipment in accordance with EN61010-1 for connection to a category II supply (pollution... -
Page 7: Instrument Wiring
Max Power Power supply The Superdew 3 can be powered by either a 90-250V AC or 24V DC supply. Connect the required supply cable to the appropriate terminals as shown in figure 1.1. The AC power supply should be between 90 - 250V AC @ 50/60Hz. -
Page 8: Installing The Air/Gas Sampling System
Installing the air/gas sampling system The piping installation schematic diagram (see section 4.1) shows all components that could be used in a dry gas measurement application. Not all the items shown will be required for every installation. Care should be taken to ensure that the sample presented to the measuring sensor is not contaminated with any other component that will damage, contaminate or affect the sensor in a way that will impair the system accuracy. -
Page 9: Piping Installation Schematic
Piping installation schematic Main Process Line Notes The sample point should be on the upper surface of the horizontal pipe, or from a vertical section of pipe, wherever possible. The sample tube should run upwards from the sample point. If this is not possible, then an inspection port or drain tap should be installed at the lowest point in the sample system. -
Page 10: Installing And Commissioning The Sensor
This completes the installation and commissioning, but on initial start-up, it could take several hours for the system to reach equilibrium. The Superdew 3 will now indicate the dewpoint of the air/gas surrounding the sensor, and the analogue output would be giving mA signals proportional to the indicated dewpoint. -
Page 11: Default Instrument Configuration
ºC & ºF are fixed to 1 dp. Note – The Password used within the Superdew 3 is made of four integers and does not use the dp. Note – To leave the numerical part of this routine without saving, simply press the key. -
Page 12: Range
Description – The ‘rAngE’ option allows the user to select the required sensor range. This option is used to match the Superdew 3 to the sensor connected to the unit. For example a ‘RED’ sensor requires that the Superdew 3 ‘rAngE’ option ‘rEd’ is selected. -
Page 13: Rs485 (Communications)
‘Addr’, or ‘bAUd’ then press the key. Note - If the key is pressed the Superdew 3 will return to the ‘rS485’ screen. If the ‘Addr’ option is selected the screen will now display the current address value. Use the &... -
Page 14: Normal Operation Of The Superdew 3
Normal operation of the Superdew 3 In normal operation, the Superdew 3 will display the current moisture value of the connected sensor. The value is displayed in the currently selected engineering units, which is indicated by the small LED. The Alarm LED’s (AL1 & AL2) will light whenever an alarm condition occurs and only turn off when the alarm condition clears. -
Page 15: Calibration (Sensor Ranges Up To 0°C Dewpoint)
Calibration (Sensor Ranges up to 0° C Dewpoint) A major advantage of the Superdew3 is the Autocal Feature. The system relies on the fact that each sensor is designed to give no further increase in reading when it reaches its maximum moisture level. This means that, for instance, the Silver Spot or Red Spot sensor will read –20ºC Dewpoint when it is exposed to gas at –... -
Page 16: Faults / Errors
Should it be necessary at any time or for whatever reason, to change either the instrument or sensor, it should be noted that the components of the Superdew 3 sensor system are completely interchangeable. Faults / Errors If the sensor is short-circuited the display will read ‘Short’, the voltage output will drive to full scale, the current output will drive to 24mA and both alarms/relays will trip. -
Page 17: Appendix A - Superdew 3 Setup Menu Flow Diagram
Appendix A – Superdew 3 Setup Menu Flow Diagram Return to Moisture Display SEtUP PASS Press for > 5 secs 0000 ▼ rAngE oUtPt rS485 PASS PAnEL Same As AL1 SPAn 4-20 SEtPt Addr 0000 COnF -45.0 ▼ ▼ ▼... -
Page 18: Appendix B - Alarm 1 & 2 Hotkey Flow Diagram
Appendix B – Alarm 1 & 2 Hotkey Flow Diagram Auto transition... -
Page 19: Appendix C - Units Hotkey Flow Diagram
Appendix C – Units Hotkey Flow Diagram...