Related Manuals for Vaisala HMDW60
Summary of Contents for Vaisala HMDW60
- Page 1 USER'S GUIDE Calibration of Series HMD/W60/70 and HMP140 Transmitters with Vaisala HUMICAP® Indicator HMI41 U218EN11...
- Page 2 The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of...
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Page 3: Table Of Contents
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual Contents 1. INTRODUCTION ........................1 1.1 HMI41 with calibration option ..................1 1.2 Selecting the HMI41 calibrator function ..............1 2. OUTPUT SCALE SELECTIONS....................3 2.1 Standard transmitter settings ................3 2.2 Getting started ......................3 2.3 Scale selection modes .................... - Page 4 HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 This page intentionally left blank. 1996-08-29...
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Page 5: Introduction
19116ZZ-U218en-1.1 Operating Manual INTRODUCTION HMI41 with calibration option The HMI41 can be used as a field calibrator for various Vaisala humidity transmitters. There are three different calibration cables available: 19116ZZ for the calibration of HMD/W60/70 and HMP140 series analogue transmitters... - Page 6 HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 °C If the basic settings of the HMI41 (display units, automatic power off function, display quantities and pressure) have to be changed, please refer to the HMI41 Operating Manual. Otherwise, press ENTER repeatedly until the following text appears: The number on the first line of the display corresponds to the following HMI41 functions:...
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Page 7: Output Scale Selections
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual OUTPUT SCALE SELECTIONS 2.1 Standard transmitter settings In Table 2.1 you will find the standard settings of the HMD/W60, HMD/W70 and the HMP140 series transmitters. Transmitter Relative humidity Temperature Voltage Current output scaling range scaling range output 0...1 V... -
Page 8: Scale Selection Modes
HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 Scale selection mode is entered when this text is on the display. Scale selection modes The HMI41 has four scale selection modes: voltage output (U) and current output (I) selection modes are used for transmitters with standard settings. Customized voltage output (cU) and customized current output (cI) selection modes are meant for analogue transmitters with customized RH, T and/or output range settings. -
Page 9: Current Output Selection Mode (I)
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual °C °C Numbers on the first line start to blink. They indicate the upper limit of the transmitter’s temperature range currently stored in the HMI41 memory. Text in the lower righthand corner is Hi. You can now set the upper limit with buttons (number up) or (number down) to correspond to that of the... -
Page 10: Customized Voltage Output Selection Mode (Cu)
HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 °C °C Numbers on the second line are blinking. They indicate the lower limit of the transmitter’s temperature range currently stored in the HMI41 memory. Text in the lower righthand corner is Lo. You can now set the lower limit with buttons (number up) or (number down) to correspond to that of the... -
Page 11: Humidity Channel
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual 2.3.3.1 Humidity channel Numbers on the display are blinking. They indicate the voltage range of the transmitter’s RH channel (jumper selectable) currently stored in the HMI41 memory. Please, consult Figures 2.3.1 - 2.3.2 when checking the transmitter’s jumper positions. - Page 12 HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 Numbers on the first line start to blink. They indicate the upper limit of the transmitter’s voltage range currently stored in the HMI41 memory and the text in the lower righthand corner is Hi. You can now set the upper limit of the voltage range to correspond to that of the transmitter.
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Page 13: Temperature Channel
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual 2.3.3.2 Temperature channel Numbers on the second line are blinking. They indicate the voltage range of the transmitter’s T channel (jumper selectable) currently stored in the HMI41 memory. Please, consult Figures 2.3.3 - 2.3.4 when checking the transmitter’s jumper positions. -
Page 14: Customized Current Output Selection Mode (Ci)
HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 Numbers on the first line start to blink. They indicate the upper limit of the transmitter’s voltage range currently stored in the HMI41 memory. Text in the lower righthand corner is Hi. You can now set the upper limit with buttons to correspond to that of the transmitter. -
Page 15: Humidity Channel
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual Select the cI selection mode with buttons and acknowledge the selection with ENTER. A text similar to the following is displayed: 2.3.4.1 Humidity channel Numbers on the second line are blinking. They indicate the current range of the the transmitter’s RH channel currently stored in the HMI41 memory. -
Page 16: Temperature Channel
HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 lower righthand corner is Hi. You can now set the upper limit to correspond to that of the transmitter. Set the limit with buttons and acknowledge the setting with ENTER. The HMI41 goes on to T channel settings and a text similar to the following is displayed: 2.3.4.2 Temperature channel... -
Page 17: Calibration
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual CALIBRATION For a successful calibration, it is essential that the probe of the HMI41 and that of the transmitter are at the same temperature, and that the reference probe has been previously calibrated. Always allow enough time for the readings to stabilize. - Page 18 HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 T TEST RH TEST T GAIN TEST CONNECTOR T OFFSET OFFSET GAIN T GAIN T OFFSET OFFSET GAIN HMD70U/Y HMW60U/Y Figure 3.3 Calibration connectors and potentiometers in the HMW60 and HMW70 transmitters Tgain Toffset Test connector for voltage outputs RHoffset...
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Page 19: Humidity Calibration
HMI41 Calibration Option 19116ZZ-U218en-1.1 Operating Manual Humidity calibration When performing the humidity calibration of the HMD/W60 transmitters, make sure that the calibration cable is connected to the RH test connector (Figures 3.2 and 3.3). After having connected the cable, turn the HMI41 on with the ON/OFF button and wait until the following text appears on the display: This message remains on the display for about 5 seconds. -
Page 20: Temperature Calibration
HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1.1 Numbers on the first line indicate how much the RH measured by the transmitter differs from that measured by the HMI41 reference probe. Numbers on the second line indicate the relative humidity measured by the reference probe. - Page 21 After having completed the calibration, press ON/OFF and disconnect the cable. GUARANTEE Vaisala issues a guarantee for the material and workmanship of this product under normal operating conditions for one (1) year from the date of delivery. Exceptional operating conditions, damage due to careless handling and mis- application will void the guarantee.
- Page 22 HMI41 Calibration Option 19116ZZ-U218-1.1 Appendix 1 APPENDIX 1: QUICK REFERENCE TO SCALE SELECTIONS AND CALIBRATION It is recommended that this quick reference guide is used only as a checking list for those who already know how to operate the HMI41 as a calibrator. For those who take it into use for the first time, the Operating Manual gives useful information that is not included in this quick reference guide.
- Page 23 HMI41 Calibration Option Appendix 1 19116ZZ-U218en-1.1 Scale selection modes The HMI41 automatically assumes the function selected in the setup menu when it is turned on again with the ON/OFF button. In the following, you will find a summary of the scale selection modes. DISPLAY DESCRIPTION The HMI41 has been turned on.
- Page 24 HMI41 Calibration Option 19116ZZ-U218-1.1 Appendix 1 Current output scale selection mode (I) DISPLAY WHAT TO DO PRESS: (number up) or Select the current output scale selection (number down) mode (I) ENTER to acknowledge the selection (number up) or Select the output (number down) (0...20 mA or 4...20 mA) ENTER to acknowledge the...
- Page 25 HMI41 Calibration Option Appendix 1 19116ZZ-U218en-1.1 Customized voltage output selection mode (cU) DISPLAY WHAT TO DO PRESS: (number up) or Select the customized voltage output (number down) scale selection mode (cU) ENTER to acknowledge the selection (number up) or Select the jumper selected RH channel’s (number down) voltage output range ENTER to acknowledge the...
- Page 26 HMI41 Calibration Option 19116ZZ-U218-1.1 Appendix 1 Customized current output selection mode (cI) DISPLAY WHAT TO DO PRESS: (number up) or Select the customized current output scale (number down) selection mode (cI) ENTER to acknowledge the selection (number up) or Select the RH channel’s current output (number down) range ENTER to acknowledge the...
- Page 27 HMI41 Calibration Option Appendix 1 19116ZZ-U218en-1.1 Calibration DISPLAY WHAT TO DO PRESS: Wait for about 5 seconds. Let the readings stabilize and then adjust HOLD to enter the second RH the transmitter potentiometers until the calibration mode readings are the same. Alternatively, you MODE to enter the first T can calibrate the transmitter in the second calibration mode...
- Page 30 *U218EN*...