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HygroCal100 User’s Manual

Michell Instruments

MAINTENANCE

4.4 Calibration

Correction

The HygroCal100 is provided with an intuitive calibration correction system which is used

to calibrate and adjust the internal HS3 control sensor against an external reference

device.

If a traceable reference is available, it is advisable to pass the traceability of this onto

the control sensor of the HygroCal100 at regular intervals. The process allows calibration

at 3, 5 or 9 preset points, which are:

Preset

RH Points

Total time to

complete

3 point

30%, 50%, 70%

45mins

5 point

20%, 30%, 50%, 70%, 80%

1hr 15mins

9 point

10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%

2hr 15mins

Table 11

Calibration Correction

Select System Settings ->

Correct.

This will display a prompt to enter a password

to proceed - the required code is

7316

. Once this has been entered, the Calibration

Correction Setup Screen will be displayed. This screen shows a number of checks which

should be carried out before proceeding.

NOTE: If the desiccant is exhausted, or the saturator is not suffi ciently fi lled,

then this can result in an invalid correction being applied to the control sensor.

NOTE: Ensure that the temperature of the environment you intend to operate

in is stable before proceeding.

13:04

Calibration Correction

- Check saturator

- Check desiccant

- Is external reference installed?

Calibration Points

TRANSFER

TEMP

DEFAULT

START

Figure 33

Calibration Correction Setup Screen

The Calibration Correction Setup Screen allows selection of the desired number
of calibration points. Once this choice is made, touch the

Start

button to begin the

calibration.

Previous calibration corrections can be downloaded to USB memory by touching the

Transfer

icon, and will be stored in CSV format as per the log data fi les (see Section

3.9.2 for further information).

Содержание HygroCal100

Страница 1: ...HygroCal100 Humidity Validator User s Manual 97500 Issue 3 January 2018 ...

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: ...d and 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 For Michell Instruments contact information please go to www michell com HygroCal100 ...

Страница 4: ...Operational Information 11 3 2 Display 11 3 3 Main Screen Layout 12 3 4 Menu Structure 13 3 4 1 Current Set Point 14 3 4 2 Probe Selection 14 3 4 3 Operational Status Display 14 3 4 4 Calibration Settings 15 3 4 4 1 Mode 15 3 4 4 2 Probes 16 3 4 4 3 Program 17 3 4 4 4 Logging 18 3 4 4 5 Reference Setup 20 3 4 5 System Settings 21 3 4 5 1 Display 21 3 4 5 2 Clock 22 3 4 5 3 About 23 3 4 5 4 Correct...

Страница 5: ...servoir 32 4 3 Replacing the Internal Reference Sensor 32 4 4 Calibration Correction 33 4 5 Calibration 35 Tables Table 1 Operation Mode Screen Parameters 15 Table 2 Probe Setup Screen Parameters 16 Table 3 HygroCal100 Logging Screen Parameters 18 Table 4 RH Reference Setup Screen Parameters 20 Table 5 Display Settings Screen Parameters 21 Table 6 Clock Settings Screen Parameters 22 Table 7 Port A...

Страница 6: ...en 18 Figure 19 Log Files Screen 19 Figure 20 RH Reference Setup Screen 20 Figure 21 System Settings Screen 21 Figure 22 Display Settings Screen 21 Figure 23 Clock Settings Screen 22 Figure 24 About Screen 23 Figure 25 Calibration Correction Screen 23 Figure 26 Calibration in Progress Screen 24 Figure 27 Table view 24 Figure 28 Port Adaptor 25 Figure 29 Port Adaptor Tool 25 Figure 30 Set Point Ent...

Страница 7: ...ut power supply voltage is limited to 24 V DC 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...

Страница 8: ... number PRT Platinum resistance thermometer typically type Pt100 psig pound s per square inch gauge rh relative humidity RTU Remote Terminal Unit scfh standard cubic feet per hour SD storage device card memory card for storing datalog files sec second s temp temperature USB Universal Serial Bus V Volts Warnings The following general warnings listed below are applicable to this instrument They are ...

Страница 9: ...mber is supplemented by two reservoirs one of which contains desiccant the other contains a saturator which consists of a small quantity of distilled water and a diffuser A pump circulates air through the system which is directed either to the desiccant or saturator reservoir by a 2 way valve When flowing through the desiccant moisture is removed from the air when flowing through the saturator moi...

Страница 10: ...ON 2 1 Unpacking The HygroCal100 will be supplied in a carry case if this option was selected or in a cardboard box If the HygroCal was ordered with a carry case 1 Remove the carry case from the packing box 2 Open the carry case 3 Remove the instrument and place on a level surface ...

Страница 11: ...If there are any shortages please notify Michell Instruments immediately If Calibration Kit 1 or 2 has been ordered then a separate box will also be supplied containing the reference instrument either an MDM25 or Optidew Vision The specific port adaptors for the reference will be in the accessories box or optional carry case with any other spare port adaptors ordered 2 2 Operating Requirements 2 2...

Страница 12: ...oCal100 are located on the front top and rear panels of the device Front Panel 1 2 Figure 1 Front Panel 1 USB port Accepts a USB memory device for the transfer of logged data see Section 3 4 4 4 for instructions on how to download logged data 2 Touch screen display Displays measured readings and enables the user to control the operation of the chamber ...

Страница 13: ...idify the air in the chamber see Section 4 2 for instructions on how to refill the saturator 2 Probe ports Used to mount probes under test into the chamber see Section 2 5 1 for instructions on how to install port adaptors and probes 3 Desiccant reservoir Contains desiccant used to dry the air in the chamber see Section 4 1 for instructions on how to replace desiccant ...

Страница 14: ...put connections Connections for probes under test see Section 2 5 1 for instructions on how to connect probes 2 USB communications port Allows the HygroCal to be connected to a PC outputting the relative humidity and temperature values of both the reference probes and the probes under test 3 Service access port Remove for replacement of HS3 control probe see Section 4 3 for instructions on how to ...

Страница 15: ...bes under test Probes with a voltage or current input can be connected 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Probe Input Connector Pins 1 DC Supply 15 V 24 V 2 Ground 3 RH voltage input 4 Temperature voltage input 5 RH current input 6 Temperature current input 7 Not connected 8 Not connected Pin 1 provides 24 V...

Страница 16: ...be in the following format InternalReferenceRH Probe1RH Probe2RH Probe3RH Probe4RH Probe5RH Probe6RH Probe7RH InternalReferenceTP Probe1TP Probe2TP Probe3TP Probe4TP Probe5TP Probe6TP Probe7TP 0100 0114 FFFF 0115 FFFF FFFF FFFF FFFF 00E9 00E4 FFFF 00E3 FFFF FFFF FFFF FFFF Each 2 byte hex word is a 16 bit unsigned integer which should be divided by 10 to give the actual decimal value of the associa...

Страница 17: ... 7 Power Adaptor Input 2 5 Top Panel Layout 2 5 1 Probe Ports Seven ports are provided for the installation of probes under test Each port is fitted with an adaptor which allows the probe to be sealed into the chamber by means of an O ring 1 2 3 4 5 6 7 Reference Figure 8 Probe Ports Adaptors are available with a wide variety of port sizes from 12 to 25mm To install a port adaptor locate the port ...

Страница 18: ...urator provides the source of humid air for the chamber Distilled water should be added to the saturator before operation The saturator should only be filled with distilled water no more than 30ml total refer to Section 4 2 NOTE Always remove water from the saturator reservoir before transportation Adding water Power off the HygroCal100 Remove the lid and use the syringe supplied to add water to t...

Страница 19: ... moved from an environment with a very different temperature i e from outside on a winter s day to inside it can be beneficial to remove the port adaptor plugs from the chamber and run it in standby mode for this time to allow ambient air to diffuse around the chamber interior more freely The HygroCal100 is suitable for verifying any relative humidity sensor provided that it can be tightly sealed ...

Страница 20: ...nal information 4 Probe Readout Displays the RH and temperature readouts of the selected probe 5 Power Status Indicator Displays the current power source and battery charge level as described in section 3 7 1 6 Stability Graph Displays a plot of RH over time Touch and hold the readout to enter full screen mode 7 Operational Status Display A detailed description of each item displayed in this area ...

Страница 21: ...ation Mode Output Signal RH Status Displayed Reference Temp Zero Duration Filename Port Selection Temp Span Interval External Input Log Files External Temperature Zero External Temperature Span System Settings Display Clock About Correct Primary Unit Day Password Language Month Year Hour Minute Calibration Points Brightness Transfer ...

Страница 22: ...en can be configured to show the relative humidity and temperature readings of any of the connected probes To cycle through the connected probes touch the left or right arrow keys on either side of the probe number indication 3 4 3 Operational Status Display The Operational Status Display includes the following Chamber Indicates the operational condition of the chamber Options RESPONDING STABILIZI...

Страница 23: ...e icons will take you to the appropriate submenu 13 00 LOGGING MODE PROBES REF SETUP PROGRAM Calibration Settings Figure 14 Calibration Settings Screen 3 4 4 1 Mode 12 09 Operation Mode Operation Mode Auto Figure 15 Operation Mode Screen Parameter Description Operation Mode Determines whether the chamber is controlling manually according to the target set point on the Main Screen automatically acc...

Страница 24: ...the probe ports using the left and right arrows Output Signal The output signal used by the probe currently selected Available Input 0 20 mA 4 20 mA 0 1 V 0 5 V 0 10 V Temp Zero For this probe Sets the temperature which corresponds to a zero output Available Input Numerical Temp Span For this probe Sets the probe temperature which corresponds to a span output Available Input Numerical Table 2 Prob...

Страница 25: ...dity value and the length of time the chamber should spend maintaining this humidity Once this period of time has elapsed the chamber will move to the conditions on the next row There can be a maximum of 10 calibration points in the routine NOTE The Duration only starts when the chamber has stabilized at the desired condition To initiate the calibration routine touch the Start button At this point...

Страница 26: ...ng is active or not Available Inputs None Filename Sets the name for the next log file Available Input Text Interval Sets the frequency at which logged data will be collected Available Inputs Time in minutes and seconds Table 3 HygroCal100 Logging Screen Parameters Once a filename has been set logging can be initiated by touching the Start button The Log Files Screen can also be accessed from here...

Страница 27: ...en This screen allows management of the log files currently stored on the HygroCal100 Each of the log files is listed as its own row in this screen the rows are scrollable by means of the up and down arrows located on the left hand side The rows also have tick boxes which can be used to highlight each independently Once a row has been highlighted it can be either transferred to USB memory or delet...

Страница 28: ...nal device as the reference Available Input Internal External Port Selection Selects the probe port if the external reference is connected External Input Selects the output signal if the external reference is connected Available Input 0 1V 0 5V 0 10V 0 20mA 4 20mA External Temperature Zero Sets the temperature which corresponds to a zero output if the external reference is connected Available Inpu...

Страница 29: ... calibration correction functionality 3 4 5 1 Display Display Settings Primary Unit Language Brightness 6 11 49 C English Figure 22 Display Settings Screen Parameter Description Primary Unit Changes the primary temperature unit Available inputs C F Language Changes the display language Available inputs English French German Spanish Portuguese Italian Brightness Alters display brightness Available ...

Страница 30: ...e Year Time 03 09 11 49 2015 Figure 23 Clock Settings Screen Parameter Description Day Current Day Available Inputs DD Month Current Month Available Inputs MM Year Current Year Available Inputs YYYY Hour Current Hour Available Inputs HH Minute Current Minute Available Inputs MM Table 6 Clock Settings Screen Parameters ...

Страница 31: ...ion Points TRANSFER TEMP APPLY DEFAULT Figure 25 Calibration Correction Screen In order to enter the Calibration Correction Screen a prompt box will appear asking the user to enter a code To proceed enter 7316 The Calibration Correction Screen allows the initialization of an internal calibration routine The number of calibration points can be changed between 3 5 and 9 The data collected from previ...

Страница 32: ... 50 0 70 0 29 9 49 9 70 0 30 9 51 2 70 3 00 00 Figure 26 Calibration in Progress Screen Once all the requested calibration points have been completed the Apply button will appear to confirm and complete the correction process At any point the calibration can be cancelled by touching the Exit icon 3 4 6 Table View Table view allows the readings of the designated reference and all probes under test ...

Страница 33: ...mm 0 73 A000295 19mm 0 75 A000296 24mm 0 94 A000297 25mm 0 98 A000298 Table 7 Port Adapter Order Codes Adaptors can be installed or removed using the Port Adaptor Tool A000265 Take care to ensure that the port adaptor is properly aligned with the thread before tightening Figure 29 Port Adaptor Tool 3 6 Probe Installation 3 6 1 Chamber Connection To install a probe into the HygroCal100 chamber firs...

Страница 34: ...put to be connected in order for the temperature channel to work A temperature input connected alone will not be processed NOTE This table also appears on the rear panel of the instrument for quick reference For each connection 1 Remove the terminal block 2 Strip back the wires on the probe lead to ensure at least 6mm is exposed if necessary 3 Insert the wire for the ground connection into the Gro...

Страница 35: ...er connected Indicates that the power adaptor is plugged in If the HC100 is fitted with a battery this also indicates that the battery is charging Operating on battery Indicates that the power adaptor is not plugged in and shows the current battery charge level There are 4 indicated levels from full pictured to very low empty icon Table 9 Power Status Indicator 3 8 Operating Guide 3 8 1 Manual Mod...

Страница 36: ...ration does not include time taken to reach and stabilize on the target The duration time starts to count down once the measured RH value has been stable to within 0 5 of the set point for 20 seconds Consider the example calibration routine in Figure 30 and its visualization in the chart in Figure 31 Program Calibration Routine Point START 1 RH Duration hh mm 30 0 00 04 2 35 0 00 05 3 40 0 00 21 4...

Страница 37: ... conditions that each probe under test experiences may not be the same Due to the key influence temperature has on determining relative humidity validation errors would result For example at an ambient of 23 C and a set point of 40 RH a difference of 0 5 C could affect the RH by up to 1 25 At lower humidities the difference can be even more significant When running a validation routine it is usual...

Страница 38: ...is will be written to the internal memory as a CSV file The files are identified both by number and by the name assigned as the log is initiated The Log Files Screen allows multiple files to be selected and downloaded 3 10 Standby Mode Standby mode can be activated through the Calibration Settings Screen Mode see Section 3 4 4 1 When it is active the pump will shut off and the unit will not contro...

Страница 39: ...To replace the desiccant it is preferable to empty the chamber by use of a vacuum cleaner The desiccant can be regenerated by emptying it completely from the desiccant chamber and drying it in an oven for approximately 3 hours at 130 C 266 F ensuring that it is spread out across a tray After drying it in an oven allow the silica gel to cool before refilling the desiccant chamber Alternatively spar...

Страница 40: ...rom your local Michell Instruments representative using the part number HC100 HS3 S R To replace the sensor 1 Loosen the two screws securing the service panel to the rear of the unit 2 The reference sensor is attached to the service panel and sealed into the control chamber by an O ring Gently pull the panel away removing the HS3 control sensor from the chamber 3 Unscrew the collar at the base of ...

Страница 41: ...this has been entered the Calibration Correction Setup Screen will be displayed This screen shows a number of checks which should be carried out before proceeding NOTE If the desiccant is exhausted or the saturator is not sufficiently filled then this can result in an invalid correction being applied to the control sensor NOTE Ensure that the temperature of the environment you intend to operate in...

Страница 42: ...ure 34 Calibration Correction Screen The Calibration Correction Screen will then be displayed and the chamber set point will be changed to the first point in the routine After 15 minutes the values read by both the sensor and reference will be sampled to determine the required correction An icon labelled next will appear in the bottom right of the screen touch this to confirm and continue to the n...

Страница 43: ...hangeable Sensor Order Interchangeable Sensor Serial Interchangeable Sensor Cal Date HS3 S SAA000338 15 March 2016 The above mentioned item has been calibrated at the following points in the Michell Instruments Humidity Calibration Laboratory against the below Test Equipment traceable to the defined National Standard Reference Humidity RH Observed Humidity RH Difference RH Permissible Difference R...

Страница 44: ...HygroCal100 User s Manual 36 97500 Issue 3 January 2018 APPENDIX A Appendix A Technical Specifications ...

Страница 45: ...ls 0 20 mA 4 20 mA 0 1 V 0 5 V 0 10V Measurement Units RH temperature in C F Displayed Resolution 0 1 Data Logging 2Gb internal memory available for log files or 10 6 years storage at 5 second intervals Battery optional 1500 mAh Power Supply 24 V DC 100 to 240 V AC 50 60 Hz adaptor included Mechanical Specification Probe Ports 8 sensor body diameters 5 to 25mm accommodated by port adaptors Chamber...

Страница 46: ...HygroCal100 User s Manual 38 97500 Issue 3 January 2018 APPENDIX B Appendix B Troubleshooting ...

Страница 47: ...nual Michell Instruments 39 APPENDIX B Appendix B Troubleshooting Problem Possible Solution Not drying or drying slowly Change desiccant Water in chamber Dry chamber Not humidifying or humidifying slowly Water level too low ...

Страница 48: ...HygroCal100 User s Manual 40 97500 Issue 3 January 2018 APPENDIX C Appendix C Quality Recycling Warranty Information ...

Страница 49: ...ectives Full information can be found on our website at www michell com compliance This page contains information on the following directives ATEX Directive Calibration Facilities Conflict Minerals FCC Statement Manufacturing Quality Modern Slavery Statement Pressure Equipment Directive REACH RoHS2 WEEE2 Recycling Policy Warranty and Returns This information is also available in PDF format ...

Страница 50: ...HygroCal100 User s Manual 42 97500 Issue 3 January 2018 APPENDIX D Appendix D Return Document Decontamination Declaration ...

Страница 51: ...micals 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 o...

Страница 52: ...HygroCal100 User s Manual 44 97500 Issue 3 January 2018 NOTES ...

Страница 53: ...en designed to be in conformance with the relevant sections of the following standards or other normative documents EN61326 1 2013 Electrical equipment for measurement control and laboratory use EMC requirements Group 1 Class B emissions and immunity EN61010 1 2010 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements Robert Jan Pouw RH...

Страница 54: ...http www michell com ...

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