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44 Section 14: Hardware Interfacing

Many printers, such as those from IBM and HP, have a male connec-
tor, are configured as DCE, and use DTR/DSR handshake.  An adapter
for these printer types is shown below.

A computer interface adapter for IBM PCs and compatibles is shown
below. Note that this adapter is supplied as a standard accessory.
This type of adapter is also available as a standard product from
most computer accessory sales companies.

Some computers do not use the standard 25-pin connector.  An
adapter is supplied with the HERMIT for connection to an IBM PC/
AT or compatible. The example below shows a connection for the
Epson HX-20.

Finally, many computers do not require an adapter to work.  Radio
Shack’s TRS-80 Model 100 is a good example.

Transducers

Transducers other than those provided by In-Situ may be adapted
for use with the HERMIT.  Mating connectors must be ordered sepa-
rately from In-Situ.  Do not use any other type of connector as this
will compromise the integrity of waterproof operation.

The wiring of a standard 2-
wire 4-20 mA transducer is
shown here. The HERMIT
provides loop power at ap-
proximately 24 VDC and has
a nominal resistance of 185
ohms. Loop power is supplied
only when the instrument needs to take a measurement.

Transducers that require
more power than can be sup-
plied within the 4-20 mA loop
can be used in the 3-wire
configuration shown here.
The source output of the
HERMIT can supply as much
as 100 mA. The output is protected by current-limiting circuitry.

Summary of Contents for HERMIT SE2000

Page 1: ...HERMIT 2000 Environmental Data Logger Model SE2000 Operator s Manual September 1994 Software Version 3 4...

Page 2: ...its fitness for a particular application In Situ will not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing perfor mance or use of thi...

Page 3: ...Defined Sampling 13 The Number of Transducers 14 More About Input Data Types 14 Function Type 15 Level Type 15 Flow Type 15 Dual Type 15 Exiting the Test Setup Menu 15 5 Setting Up Transducers 16 Assi...

Page 4: ...nsducers 44 Appendix A Accessories 45 Standard Accessories 45 Optional Accessories 45 Appendix B Installation Maintenance Service 46 Unpacking and Inspection 46 Rear Panel 46 Installing Transducers an...

Page 5: ...revious version of the HERMIT 2000 you may want to take notice of several new features that have been added to software Version 3 4 When you press START to begin a test with Level type inputs the HERM...

Page 6: ...umption achievingabatterylifemeasuredinyears instead of months Your HERMIT 2000 is naturally narcoleptic fall ing asleep whenever there is no immediate task for the instrument to perform When the inst...

Page 7: ...nbrackets Ifyouwishtousethe displayed value just press ENTER without typing any digits Theinstrumentwillenterthedefault value and continue to the next dis play In this example the next prompt is for a...

Page 8: ...ery life by cutting short the normal 60 second sleep delay The READY Display Press and release any key The HER MIT2000willwakeandrespondwith READY TheREADYpromptispresentedwhenevertheHERMIT2000isawake...

Page 9: ...mayindicateamal function Appendix D contains a list of watchdog error codes The final self test display identifies the HERMIT 2000 s configura tion and all installed options If FAIL is indicated at an...

Page 10: ...oterasedatauntilthe correct code is entered The indicated tests are then erased and the data storage is set up for our new test The display will show the number of datapointsthatcanbecollectedwith the...

Page 11: ...again to exit the test setupmenuandreturntotheREADY display From this point on all other functions and menu displays will be automatically tailored to match your SETUP TEST selections For this reason...

Page 12: ...will leave the transducer disconnected Press CLEAR to return to the trans ducer menu Press CLEAR again to return to the READY display We re now ready to start collecting some data Starting the Test Fr...

Page 13: ...nput 1 Function 10 03 00 00 00 Input 1 Function 0 0000 2 899 View 50 190114 _ Test 0 Stop Enter to confirm READY Test 0 Stop Battery Life Tip Don t waste battery power and memory endurance by leaving...

Page 14: ...ument is running a test or if it is waiting for a delayed or alarm start PresstheCLOCKkeywhileattheREADYdisplay The HERMIT 2000 will display the current date and time Press ENTER to begin setting the...

Page 15: ...ttest number The previous test setup is copied to the new test the available data point capacity and test time in days is displayed followed by the test setup menu Note Thesetupparametersarecopiedfrom...

Page 16: ...from 1 minute to 1440 minutes one day This mode is useful for collecting long termdataandforrecordingbackgrounddatapriortorunningpump or slug tests Linear mode 2 allows faster sampling 2 to 59 second...

Page 17: ...ored The data recorded during this period will vary de pending on the coefficient settings but the start of good data should be readily apparent User Defined Sampling The USER sample mode allows you t...

Page 18: ...ransducers to be used during the test The current selection is shown in brackets WhenyoupressENTER theamount of storage and the maximum test length are displayed and you are returned to the test setup...

Page 19: ...ate In a manner similar to the level type input the 4 20 mA output of a pressure transducer is converted to PSI PSI is then converted to flow using a standard orifice equation and a programmable calib...

Page 20: ...umeric keypad or use the SCAN keys to change a keyed digit to any character or sym bol You can key in up to 8 digits sym bols or characters Longer entries will be truncated to the first 8 char acters...

Page 21: ...et to zero if not specified DELAY Warmup delay For an In Situ transducer set to 50 mSEC unless specified otherwise You will probably have to de terminethisvaluebyexperimentforthird partytransducers Re...

Page 22: ...ufacturer this value should not be zero for a pressure transducer OFFS Offset Set to zero if not specified DELAY Warmup delay For an In Situ transducer set to 50 mSEC unless specified otherwise You wi...

Page 23: ...cttheREF optionfrom the transducer menus Key in a value for the reference level and press ENTER The HERMIT 2000 will power up the transducerandtakeacorresponding reference head reading and then return...

Page 24: ...s Use the more option to access a deeper menu Use CLEAR to back up to the previous menu level Three of the menu param eters are used to convert the 4 20 mA transducer output to a pressure in PSI units...

Page 25: ...ere Q Volumetric flow rate in GPM K Orifice coefficient from curve A Orifice area in square inches H Transducer head in feet Flow Setup Procedure You can use the following procedure to properly set up...

Page 26: ...sducer Readingsonadual modetransducer require about five seconds Thetemperatureandprimaryvalues are displayed simultaneously Reminder Due to the time required to read a dual mode trans ducer all dual...

Page 27: ...F1 to turn the alarm limit ON Press F2 to turn the alarm limit OFF If you turn the limit on the HERMIT 2000 will prompt you for the low limit Key in your value for the low alarm limit and press ENTER...

Page 28: ...start function is found in the test setup menu Press the SETUP TEST key at the READY display to access the menu Section 6 Setting Up Alarms 12345678 HH LL SETUP TEST Battery Life Tip The HERMIT 2000 c...

Page 29: ...the IMMEDIATE start option The HERMIT 2000 will start the test and record the first data point The screen display will vary depending on the sample rate pro grammed for the test In addition the availa...

Page 30: ...rtautomaticallywhen an alarm is detected Stepping the Test The HERMIT 2000 gives you the option to subdivide a test into steps This feature is useful when running constant rate and stepped rate pump t...

Page 31: ...READY display Note A test cannot be stopped during the first minute of the log sample mode log cycles 1 and 2 In the Linear 2 sample mode there will be no opportunity to confirm or cancel the STOP se...

Page 32: ...seconds and then return to the data display Changing the View Percentage Youcanmovequicklytoanotherseg ment of data without scanning by changing the view percentage Press CLEAR to exit the view displa...

Page 33: ...option The current plotter type setting is shown Press F1 to cycle through the available plotter types PressCLEARorENTERwhenthedis play shows the plotter type you want The display will then return to...

Page 34: ...encounter difficulties while attempting to print data WhileattheREADYdisplay presstheDUMPDATA key to access the dump data menu The dump data menu contains op tions for printing and plotting data Plot...

Page 35: ...han nel type of data Surface or TOC mode for a level type and the input chan nel I D if one was set 5 Arecordofthetransducer parametersusedtocollect the data 6 The step number of the dataandthestartda...

Page 36: ...9 4000 28 321 9 6000 28 321 9 8000 28 321 10 0000 28 321 END SE2000 Environmental Logger 01 05 06 18 Unit Test 0 Setups INPUT 1 INPUT 2 INPUT 3 INPUT 4 Type Level F Level F Level F Level F Mode Surfa...

Page 37: ...f time There are three basic steps required to plot data Select an axes format Scale the axes to fit the data Plot the data The plot functions are accessed by pressing the DUMP DATA key while at the R...

Page 38: ...de is particularly useful when you need a com plete plot of long term data but still would like to see some detail in short term variations Division Markings Press F3 in the plot format menu to select...

Page 39: ...t little infor mation can be extracted from the plot Logarithmic X axis Scaling Scaling of a logarithmic x axis in the semi log or log log modes requires the entry of only two parameters The number of...

Page 40: ...on the range of the y axis endpoints in either the positive or negative direction You can even swap the po larity of the endpoints For example if the data were surface water levels we might prefer tha...

Page 41: ...ndpoints such that the from value is less that the to value Incorrect settings for logarithmic scaling will cause plotting to stop with only the header information being printed Select the input chann...

Page 42: ...4 transducers are used TYPE Set input channels 1 through 3 for LEVEL and input channel 4 for FLOW Next enter the parameters for each of the pressure transducers that will be used to measure level 3 U...

Page 43: ...ta and recording the pump discharge rate After the firsttwominutesofthetesttheHERMIT2000keyboardwillbeavail able for you to use You can VIEW the data to monitor the progress of the test You can print...

Page 44: ...hannel 1 to LEVEL type and input channel 2 to FUNCTION type With a 16K byte HERMIT 2000 we can record data for 76 days or roughly two and a half months after water is detected in the creek Next enter...

Page 45: ...urement units Turn the LOW alarm OFF 8 The high and low alarms for the temperature input should be OFF Starting the Test Since we want to record spring runoff data there is no reason to waste power ch...

Page 46: ...MIT Do not use any other type of cable as this will compromise the integrity of waterproof operation The alarm contacts and their pinouts on the back cable side of the mating connector are shown below...

Page 47: ...al diagram If pin 3 is la beled as INPUT DATA IN RECEIVED DATA RD RxD or a similar phrase then the device is DTE otherwise it is DCE The pins on the RS232 cable of the HERMIT that must be connected pr...

Page 48: ...lly many computers do not require an adapter to work Radio Shack s TRS 80 Model 100 is a good example Transducers Transducers other than those provided by In Situ may be adapted for use with the HERMI...

Page 49: ...arge8 5K11inch high resolutiongraphic data It operates on its own internal rechargeable battery pack Transducers All of In Situ s transducers come to the customer ready to use fully calibrated and com...

Page 50: ...Appendix A If any accessory items are missing please contact In Situ im mediately Note Note Note Note Note Transducers and other optional acces sories are shipped separately and should also beinspect...

Page 51: ...he contacts 3 Replacetheprotectivecapon the instrument connector Transducer Installation Transducers can be installed at any of the input channel connectors on the rear panel of the HERMIT 2000 Transd...

Page 52: ...IT 2000 2 Remove the car s cigarette lighter and install the adapter in the socket Turn the car s ignition switch to ON or ACC if re quired 3 Wake the HERMIT 2000 to con firm that external power is pr...

Page 53: ...y damaged if used outside its oper ating specifications Temperature Ranges The storage and operating temperatures for the HERMIT 2000 are 40 to 70 C 40 to 158 F Installation in extremely hot and sunny...

Page 54: ...ny instrument that proves to be defective pro vided it is returned shipping prepaid to In Situ s Product Service facility The customer is responsible for any customs duties in con nection with the ret...

Page 55: ...Transport Association IATA consider lithium to be a hazardous material Special packaging la beling and documentation are required for shipping the lithium powered HERMIT 2000 Repairs Instruments retur...

Page 56: ...9 10 127 12 ZERO Division by zero 13 ARG RANGE Argument out of range 14 SQRT Square root of a negative number 15 LOG 0 Logarithm of zero or a negative number 16 NEG X X Negative value raised to a non...

Page 57: ...ct voltage 30 VDC or 30 VAC max Contact current 1 ampere max RS232C Interface Output voltage swing 4 VDC min 5 VDC typical Input voltage range 15 VDC max 3 VDC min Baud rate Programmable 300 to 9600 b...

Page 58: ...d contain the following files DT BAT DATATRAN EXE 2 If you are installing DataTransfer to a floppy diskette insert a blank formatted diskette into drive B 3 Set the system prompt to the drive and or d...

Page 59: ...ame at the Numeric data file name prompt to indicate where the numeric data will be stored If you do not specify a path name the data file will be created in the drive and directory from which you are...

Page 60: ...ends of the cable are tight Reminder The serial port on your PC is almost certain to be male The 25 pin female port on your PC is for a printer and will not work for downloading Note The last section...

Page 61: ...y data points are to be skipped An increment of 1 transfers every data point 2 trans fers every other data point 3 every third data point and so on Press ENTER to select the default increment or key i...

Page 62: ...the trans fer the instrument will abort immediately MESSAGE SOLUTION Break signal detected This Verify that the communication message may also appear at parameters in DataTransfer and the end of data...

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