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Skye DataHog2+ Manual

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DataHog2+
Skye Instruments Ltd
21, Ddole Enterprise Park
Llandrindod Wells
Powys, LD1 6DF, UK
Tel: +44 (0) 1597 824811
Email: skyemail@skyeinstruments.com
www.skyeinstruments.com
Iss. 1.0

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  • Page 1 DataHog2+ Skye Instruments Ltd 21, Ddole Enterprise Park Llandrindod Wells Powys, LD1 6DF, UK Tel: +44 (0) 1597 824811 Email: skyemail@skyeinstruments.com www.skyeinstruments.com Iss. 1.0...
  • Page 2 DataHog2+ Skye Instruments Ltd Skye Instruments is based in the UK and we are very proud to be celebrating being in business since 1983. Our products are designed and built in the UK. We have a very wide product base and our sensors & systems are used for plant & crop research; micro-climate, global climate change studies;...

  • Page 3: Table Of Contents

    DataHog2+ CONTENTS Introduction Overview & Quick Start Inside the enclosure _________________________________________ 7 SDHC Card Overview ________________________________________ 8 2.2.1 Removing & Inserting the SDHC card ________________________ 8 Power Supply ______________________________________________9 2.3.1 Solar Power Supply _____________________________________9 Pole Mount/Bracket _____________________________________ 10 Activity LEDs _______________________________________________ 10 2.5.1 Troubleshooting of the Activity LEDs _________________________ 10 DataHog2 Memory...
  • Page 4 DataHog2+ 4.2.11b Current Inputs 25 – 40 4.2.11c Internal Temperature Reference – 45 4.2.11d Digital Count Channels 48 – 53 4.2.11e Internal Humidity Channel – 54 4.2.12 Option B - Set internal RH% sensor calibration 4.2.13 Option C - Set alarm relay(s) 4.2.14 Option D - Set channels for non zero / threshold log modes 4.2.15 Option E - Enter ‘Log on Demand’...

  • Page 5: Introduction

    DataHog2+ 1.0 Introduction The SDL 5000 series of DataHog2+ dataloggers comprise an electronically advanced datalogging system for a variety of environmental sensors. The logger is centred on a high performance generation 8 bit microprocessor (p). This has the ability to perform all the mathematical and logging tasks and then close down to conserve power.
  • Page 6 DataHog should start working. If in doubt, check the section of the manual you think appropriate, and if trouble persists phone or email Skye or your sales Agent. We will do our best to help. A quick phone call or email may save you hours of pondering.

  • Page 7: Overview & Quick Start

    DataHog2+ OVERVIEW AND QUICK START The DataHog2+ comprises the DataHog2 datalogger with the addition of the DHLC3 electronics to provide a datalogger which stores data on a removable Multimedia (SDHC) card. 2.1 Inside the Enclosure Underneath this metal plate are the DataHog2 electronics Solar Panel regulator 8 pin socket.

  • Page 8: Sdhc Card Overview

    DataHog2+ will need to be pressed. A faint click will be heard. If no click is heard then there is a problem with the power supply. 2.2 SDHC Card - overview The SDHC card needs to be formatted (FAT 16 or 32) on a PC. The maximum size of SDHC card that can be used is 32GB and the type is SDHC Class 4.

  • Page 9: Power Supply

    DataHog2+ The DHLC3 buffers datastrings whilst this LED is alight so no data is lost. Data in the buffer will be sent to the SDHC card 5 seconds after the LED goes out. At the configured logging interval the DataHog sends a 'datastring'. This datastring contains the date and time of the stored data, channel number and data: This 'datastring' is stored on the SDHCHC card in a 'day file'.

  • Page 10: Pole Mount/Bracket

    DataHog2+ Please refer to Appendix 6 for instructions on how to mount the solar panel on a pole. 2.4 Pole Mount/Bracket for the DataHog2+ SKM 225A If a pole mount has been ordered at the same time as the DataHog2+, then the enclosure will be pre-mounted on the bracket.
  • Page 11 DataHog2+ 2.5.1 Trouble-shooting LED Sequences LEDs 6, 7 & 8 continuously flash Indicates a full SDHC card. In this scenario, LEDs 1,2,3,4 & 5 will not light even though the DataHog is still running. No storage will be taking place on the SDHC card as it is full, but the DataHog will continue to store to its internal memory as long as that isn't also full.
  • Page 12 DataHog2+ The rest of this manual is a very detailed description of the DataHog2, how it operates, how to configure the many settings, plus wiring information of the many sensors which can be used. Some parts will not be applicable to the DataHog2+. DataHog2+ does not have any internal batteries, so please disregard any reference to internal batteries in the following pages.

  • Page 13: Memory

    DataHog2+ 3.0 DataHog2 3.1 Internal (on-board) Memory The DataHog2+ loggers all have solid state, battery backed Random Access Memory.(RAM). This stores all the logged data and also calibration factors etc. The on-board lithium cell should provide back-up power for approximately ten years. Because of this memory back- up, data is retained when the main batteries are flat or disconnected for replacement, but no logging is possible from this back-up power.

  • Page 14: Channels

    DataHog2+ 1,175 19.6 hours 8.1 days 3.5 wks 14 wks 3.2 Channels There are two ‘types’ of channels with DataHog2+, hardware channels and software channels. The former is the electronic hardware that is fitted to your DataHog2+. The hardware that you have will be shown in the front of this manual in the “Hardware Configuration Certificate”.

  • Page 15: Current Input Channels

    DataHog2+ Single ended Voltage Input, gain = 1, 10,100, or 1000 Single ended Voltage Input, gain = 1, 10,100, or 1000 Differential Voltage Input, gain = 1, 10,100, or 1000 (note that channel 17 uses the connections of channels 15 and 16) Single ended Voltage Input, gain = 1, 10,100, or 1000 Single ended Voltage Input, gain = 1, 10,100, or 1000 Differential Voltage Input, gain = 1, 10,100, or 1000...

  • Page 16: Internal Temperature Channel

    Current Input - ‘current gain’ settable as above, 0) to 7) N.B. a) Current channel inputs are intended for use with Skye Instruments light sensors and so show a positive reading for a negative current input with respect to ground. If these channels are used with a sensor giving a positive current output with respect to ground, then the DataHog will show a negative current.

  • Page 17: Internal Relative Humidity Channel

    DataHog2+ This hardware is simply addressed as hardware channel 54. As for all other hardware channels it may be ascribed to any or all of the 25 software channels. Hardware Channel Number Function and Description ‘Built in’ Relative Humidity Channel. 3.2.6 Software Channels The second type of channel or rather use of the word ‘channel’...

  • Page 18: Firmware

    DataHog2+ Sections later in this manual give specific details for calibration of the various channel and sensor options. Please note that this manual contains the instructions for all models and options. Please ignore those that do not apply to your specific unit. 3.8 Firmware As previously mentioned, the units are designed for low power operation, and this is at least in part achieved by switching off as much of the circuitry for as long as possible.

  • Page 19: Operation

    4.0 OPERATION 4.1 Initial Set Up The logger has been set up at Skye with as much information as possible for immediate operation. Where supplied with Skye sensors the appropriate scaling factors, zero offsets, gains etc have already been entered, as shown on the Hardware Configuration Certificate at the front of this manual.

  • Page 20: Main Menu Mode Options

    ANY NUMERIC KEY TO WAKE UP message is seen. A menu of options is displayed as below and may be selected from by typing the menu option number or letter: SKYE INSTRUMENTS LTD. MINIMET SERIES SEND CHARACTER SHOWN TO SELECT ITEM <ESC>...

  • Page 21: Option 0 - Display Readings From All Active Channels

    DataHog2+ Selecting such an inappropriate option will simply redisplay the Main Menu, or an explanatory message. NOTE – always press Escape to leave Main Menu mode and return to Log Mode. Else the logger will not record any data. 4.2.1 Option 0 - Display Readings From All Active Channels This menu option will display instantaneous readings from all active channels each time the space bar is pressed on the PC keyboard, whatever logging intervals, thresholds or time modes have been set.

  • Page 22: Option 2 - Display Software Version

    4.2.3 Option 2 - Display Software Version This mode displays the version of the current logger software along with Skye contact details for help or service. Please note that the current address, email address, web page, telephone numbers etc are to be fond on the cover of this instruction manual.

  • Page 23: Option 4 - Offload Data

    This routine allows the user to set the logger’s internal clock in real time. It is initially set at Skye to GMT and the logger’s clock is backed by an internal lithium battery. In some instances you may find that the clock will ‘drift’ by about 5 minutes in a 6 month period, so...

  • Page 24: Option 7 - Set Datafile Identifier, Plus Memory Overwrite & Timed

    DataHog2+ Full instructions are given on screen. Enter the required time first in the format HH:MM:SS, and press Y to confirm. Note that the clock starts only when the date is confirmed and entered, so you may choose to set the time 10 seconds or so ahead at this point. Enter the required date in the format DD.MM.YY and press Y to confirm.

  • Page 25: Option 8 - Set Channel Sample And Log Intervals

    Your 12 characters will be repeated on screen for your confirmation before continuing. The default Datafile Identifier setting entered at Skye includes the logger serial number, e.g. 12345xxxxtxt where the serial number is 12345. SkyeLynx Standard, WizzCom, SkyeLynx Auto and Deluxe Software packages uses this datafile identifier in filenames for data storage.
  • Page 26 DataHog2+ Both sampling and logging (storage) intervals can be chosen from 10 seconds to 12 hours, in any combination and can be different for each software channel if desired. However, different storage channels for each sensor can result in data which is difficult to sort into columns in a spreadsheet such as Excel.

  • Page 27: Option 9 - Set Ax+B Calibration Factors

    DataHog2+ NOTE - to record total rainfall it is necessary to set identical sample and log times. This will give an accumulative rainfall measurement, otherwise an average or mean measurement would be recorded, and the ‘average’ value may fall below the storage resolution in some cases.

  • Page 28: Option A - Set Channel Configuration

    DataHog2+ b) For Current Input channels 25 - 40 F/S = 2.000 /(SENSOR OUTPUT [uA per Unit] * Feedback Resistor [Megohms] ) c) For Digital channels 48 - 53 F/S = SENSOR OUTPUT [Units per 19,000 pulses] Enter 5 digits AND a decimal point Leading zeros NOT permitted Calculate the full scale as instructed for the type of channel chosen and enter in the required format above.

  • Page 29: Voltage Inputs

    DataHog2+ ENTER THE HARDWARE CHANNEL TO USE (00 TO 54) 0 - 23 - VOLTAGE INPUTS FOR +/-2V TO +/-2mV AS SET BY GAIN:- 25 - 40 - CURRENT INPUTS FOR +/-400uA TO +/-2uA AS SET BY GAIN:- - INTERNAL TEMPERATURE REFERENCE 48 - 53 - DIGITAL COUNT CHANNELS - INTERNAL HUMIDITY CHANNEL...
  • Page 30 4.2.11b Current Inputs 25 – 40 These channels are usually used for Skye light sensors or other photodiode type sensors. Enter the hardware channel you wish to configure 25 - 40 and you will then be asked to...
  • Page 31 DataHog2+ 0 - 0.005M (400uA) 4 - 0.5M (4.0uA) 1 - 0.01M (200uA) 5 - 1M (2.0uA) 2 - 0.05M (40uA) 6 - 5M (400nA) 3 - 0.1M (20uA) 7 - 10M (200nA) The feedback resistors are shown with nominal values in the submenu above, exact figures for the resistors fitted to your DataHog2+ are given on the Hardware Configuration Certificate.
  • Page 32 DataHog2+ Enter hardware channel 45. No gain needs to be chosen for this channel so the submenu to choose the scalecode is immediately displayed ENTER THE SCALE CODE TO USE SELECT THE SCALING REQ’D FOR THIS SOFTWARE CHANNEL RAW DATA COUNT Ax + B SCALING THERMISTOR (10K) INTERNAL RH%...
  • Page 33 DataHog2+ Choose the scalecode desired (usually Option 0 - Raw data count or Option 1 - Ax + B scaling for digital channels). The software will then display all the choices you have made for this digital channel. If correct, press Y to accept and return to Main Menu. If at any time you wish to switch off a software channel, e.g.
  • Page 34 DataHog2+ 4.2.12 Option B - Internal RH% Sensor Calibration Not relevant to the DataHog2+ 4.2.13 Option C - Set Alarm Relay(S) This option will only be available for models which have relay outputs fitted at the time of ordering. Up to 4 relays can be fitted to each DataHog2+. These are changeover relays, single pole with all 3 contacts, off, common and on, (contacts 1, 2 and 3 - see chapter 4 for pin connections) available to the user.
  • Page 35 DataHog2+ NOTE - alarm relay thresholds are very different form the logging thresholds described in Section 3.2.14 below and must not be confused. NOTE – always press Escape to leave Main Menu mode and return to Log Mode. Else the logger will not record any data and batteries will drain quickly.
  • Page 36 Repeat this procedure for each software channel in turn, as required. All channels are set to normal logging by default before leaving Skye. NOTE - logging thresholds are very different form the alarm relay thresholds described in Section 3.2.13 above and must not be confused.
  • Page 37 DataHog2+ It is advisable to replace the silica gel pack inside the enclosure at least once a year. The gel pack can be refreshed by warming in an oven above 100 deg C for an hour to drive off the water. Remove from the oven and place in a small air tight container to cool until it is reinstalled in the logger.
  • Page 38 DataHog2+ button. This allows full remote operation of the logger. Do not connect permanently, or excess current will be drawn. Pin 6 Plug Detect This pin when shorted to the ground pin, will allow the microprocessor to know that a plug is connected to the DataHog2+ and hence force the DataHog2+ to ‘listen’...
  • Page 39 DataHog2+ Pin 2 thermistor connection (positive excitation) Pin 3 Pin 4 - Pin 5 thermistor connection (ground) and cable screen 5.4 Single Ended Voltage Sensors N.B. Be sure that the DataHog2+’s channel is specified for the voltage you are intending to connect as an input.
  • Page 40 DataHog2+ 5.7 Potentiometer Sensors Sockets for connection of a potentiometer type sensor, e.g. a 1 kohm wind vane. Please note it is only possible to configure the DataHog2+ logger to decode ONE windvane. Pin 1 not used Pin 2 Voltage reference Pin 3 not used Pin 4...
  • Page 41 DataHog2+ 6.0 SKYELYNX COMMS SOFTWARE The DataHog2+ logger is supplied with SkyeLynx Comms software for easy communication to set up, operate and download data from memory. Please refer to the separate manual for instructions.
  • Page 42 DataHog2+ 7.0 IMPORTING DATA INTO EXCEL Once you have logged some data and offloaded this into a file, you may use Microsoft Excel to easily view, graph and tabulate the data as follows: Open Excel. Click File, Open and choose the file offloaded from your DataHog2+ logger.
  • Page 43 8.0 POWER SUPPLY OPTIONS 1) BATTERY POWER Skye DataHog and MiniMet loggers are fitted with Duracell alkaline batteries as standard. These will have a lifetime of 4-6 months depending on operating temperature, frequency of logging and data download. These batteries are an operational power source only, all data and logger configuration is stored by a lithium battery backed RAM chip, unaffected by the state of the operational power supply.
  • Page 44 DataHog2+ ** Please remember that long cables act like an aerial for picking up electrical noise. Ensure that the cable length does not run alongside other electrical installations, such as large switching machinery etc. to eliminate data transfer problems ** For DataHog2+ please contact sales.
  • Page 45 DataHog2+ FIG. 1 ACC/1A RS232 DATALEAD...
  • Page 46 DataHog2+ FIG. 2 SUB MINIATURE PLUGS Rubber “O” Ring Sleeve DO NOT USE Plastic Plug PLUG IF “O” Grip RING IS MISSING Metal Sleeve TO REMOVE METAL SLEEVE, PRESS IN POINTS MARKED “A” ON DIAGRAM AT THE SAME TIME...
  • Page 47 DataHog2+ FIG. 3 DATAHOG SOCKETS – PIN IDENTIFICATION 5 PIN SOCKETS Front (outside) view of socket 8 PIN SOCKETS Front (outside) view of socket...
  • Page 48 DataHog2+ APPENDIX 1 - SUMMARY OF CODES USED IN CHANNEL CONFIGURATION 1) VOLTAGE CHANNELS (all types) a) GAIN b) TERMINATION 00 - GAIN*1 +/- 2.0V 00 - No input ground return 01 - GAIN*10 +/- 200mV F/S 01 - A+ has ground return 02 - GAIN*100 +/- 20mV 02 - B- has ground return...
  • Page 49 DataHog2+ APPENDIX 2 - SETTING UP FULL SCALE VALUES FOR DIGITAL CHANNELS The DataHog2+ can be set up to download measurements as raw data or as scaled data in the user's preferred engineering units. Measurements are always stored as raw data in the DataHog's memory and calculated into units, if required, at the time of downloading.
  • Page 50 DataHog2+  Enter the software channel for the wind speed channel (see hardware Configuration Certificate, e.g. '00')  Enter the new Full Scale Value as calculated above - your entry must be 5 digits plus a decimal place, with no leading zeros, e.g. '945.57' ...
  • Page 51 IN THIS CASE - LEADING ZEROS ARE PERMITTED BUT DECIMAL POINTS ARE NOT. 1. TENSIOMETERS This example illustrates use with the Skye electronic tensiometers which have a sensitivity of approximately 1 mV per 20 hPa, offset -0.20 mV (these are nominal values, each tensiometer is individually calibrated and supplied with a certificate).
  • Page 52 Hence new offset count = 285.1 + (-19) = 273.1 ENTER as +0273 NOTE : When a tensiometer is supplied together with a DataHog logger directly from Skye Instruments, the shaft length and static water pressure is calculated and entered into the offset count ready for use.
  • Page 53 Potentiometer inputs on the DataHog2+ are usually used for windvane sensors and generally labelled as such.. If the DataHog2+ was bought directly from Skye, with its sensors, then all inputs will have been set up with calibration data already entered, ready for use. However, it is possible to configure this input for any suitable potentiometer sensor as described below.
  • Page 54 DataHog2+ The following example shows the user how to set up a potentiometer channel when using the Delta T EV1 evaporation pan and gauge, but this can be applied to any suitable potentiometer sensor. 1. EVAPORATION PAN a) Initial measurement of potentiometer values Set up the appropriate DataHog2+ channel to read voltage.
  • Page 55 DataHog2+ Enter as follows: e.g. F/S = 0.020271 / 1 (Gain) * 2000 = 40.5416 Enter in the required format as 40.542 The lowest of the 2 voltage readings measured in a) above is the potentiometers zero offset. Use this reading to calculate the DataHog2+ / MiniMet2's Offset Count. Calculate and enter as shown in Option 9 from the Main Menu e.g.
  • Page 56 DataHog2+ APPENDIX 5 SOLAR PANEL REGULATOR BOARD If the DataHog2+ unit has been supplied with a solar panel, then inside the enclosure, at the bottom, will be a Solar Panel Regulator Board. This board prevents overcharging of the 12v battery from the solar panel POWER CONNECTOR Connections to the 12v.
  • Page 57 DataHog2+ APPENDIX 6 FITTING THE SOLAR PANEL TO THE MAST Parts kit for connecting the Solar Panel enclosure to the mast 1) Screw the dome nuts onto one end of the studding. 2) Place a nylon washer underneath and then insert the studding through the top holes of the solar panel pole mount, through the spacers, which clamp the pole and then fit the nut.
  • Page 58 DataHog2+ 9) To attach the solar panel, first remove the 2 centre bolts on the bars at the rear of the solar panel. Line the empty screw holes up with the solar panel mast bracket with the black box on the solar panel at the hinge end.
  • Page 59 DataHog2+ APPENDIX 7 FILES ON THE SDHC CARD The SDHC card can be 'read' by any PC with a built-in multi-media card reader or by an external card reader which usually plugs into a USB port. When the card is inserted into the reader, you will then normally be presented with the standard Windows menu giving you options on what you want to do with the files.

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