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Hart Sceintific DewK 1620, User Manual

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8.4.1.49

ALARm:TEMPurature<chn>:UPPer:LIMit <float>|MIN|MAX|DEF

Sets the upper temperature alarm limit for the specified channel in degrees C or
F.

Example: ALAR:TEMP1:UPP:LIM 26.00

The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <float> pa-
rameter specifies the value for the upper temperature alarm limit. The <float>
value is always in the current temperature units (C or F). Specifying the MIN,
MAX, or DEF parameter sets the upper temperature alarm limit to the mini-
mum, maximum, or default value respectively. This command may be pass-
word protected (see Section 8.4.10, Password Commands).

8.4.1.50

ALARm:TIME:FIRSt?

Returns the time of the first alarm event.

Example: ALAR:TIME:FIRS?

Response: 15,43,13

The response is returned in the format, <hour>,<minute>,<second>.

8.4.1.51

ALARm:TIME:LAST?

Returns the time of the last alarm event.

Example: ALAR:TIME:LAST?

Response: 15,43,19

The response is returned in the format, <hour>,<minute>,<second>.

8.4.2

Measurement Commands

The measurement commands are used to read information on the statistical cal-
culations and for reading the most recent measurement for a specified channel.

8.4.2.1

CALCulate:AVERage:CLEar

Resets all running statistics for both channels.

Example: CALC1:AVER:CLE

This command may be password protected (see Section 8.4.10, Password
Commands).

8.4.2.2

CALCulate<chn>:DEWPoint?

Returns the dewpoint measurement on the specified channel in degrees C or F.

1620 the “DewK”

97

8 Digital Communications Interface

Summary of Contents for DewK 1620

Page 1: ...1620 the DewK Thermo Hygrometer User s Guide Rev 4B1801...

Page 2: ...c Inc 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Subject to change without notice Copy...

Page 3: ...ons 10 3 3 Warranty 10 4 Quick Start 13 4 1 Unpacking 13 4 2 Use Proper Care 13 4 3 Learn About the Features and Components 13 4 4 Install the Battery 13 4 5 Connect the Sensor 14 4 6 Connect the Powe...

Page 4: ...sor Lock 31 7 1 4 Sensor Cal 32 7 2 Display Menu 34 7 2 1 Display Setting 35 7 2 2 Display Layout 36 7 2 3 Field Data 37 7 2 4 Graph Scale 39 7 2 5 Display Reset 42 7 3 Data Menu 42 7 3 1 Data Record...

Page 5: ...LARm POWer ENABle bool 88 8 4 1 14 ALARm RHUMidity chn LOWer 88 8 4 1 15 ALARm RHUMidity chn LOWer ENABle 88 8 4 1 16 ALARm RHUMidity chn LOWer ENABle bool 88 8 4 1 17 ALARm RHUMidity chn LOWer LIMit...

Page 6: ...num AVERage type DATA 98 8 4 2 7 CALCulate chn PARameter num AVERage type TYPE 98 8 4 2 8 CALCulate chn PARameter num RATE 99 8 4 2 9 CALCulate chn PARameter num RATE TIME MIN MAX DEF 99 8 4 2 10 CALC...

Page 7: ...8 4 6 2 CALibrate chn ALERt bool 112 8 4 6 3 CALibrate chn DATE CALibrate 112 8 4 6 4 CALibrate chn DATE CALibrate year month day 113 8 4 6 5 CALibrate chn DATE DUE 113 8 4 6 6 CALibrate chn DATE DUE...

Page 8: ...PASSword CDISable 123 8 4 10 4 SYSTem PASSword CENable pass 123 8 4 10 5 SYSTem PASSword CENable STATe 123 8 4 10 6 SYSTem PASSword NEW pass DEF 123 8 4 10 7 SYSTem PASSword RECord 124 8 4 10 8 SYSTem...

Page 9: ...143 11 Troubleshooting 145 11 1 Troubleshooting 145 11 1 1 Incorrect temperature or humidity reading 145 11 1 2 Missing or Scattered Graph Data 145 11 1 3 Blank screen 145 11 1 4 Error message at powe...

Page 10: ...raph Scale Select Zone 40 Figure 18 Graph Scale 41 Figure 19 Display Reset 42 Figure 20 Data Menu 43 Figure 21 Data Record 44 Figure 22 Record Setting 46 Figure 23 Data View Begin Time 47 Figure 24 Da...

Page 11: ...42 System Menu 65 Figure 43 System Setting 66 Figure 44 Date Time 67 Figure 45 Comm Setting 69 Figure 46 Serial 70 Figure 47 IR 71 Figure 48 Password 72 Figure 49 System Info 73 Figure 50 Serial Cable...

Page 12: ...y 45 Table 4 Alphabetical List Commands 77 Table 4 Alphabetical List Commands continued 78 Table 4 Alphabetical List Commands continued 79 Table 4 Alphabetical List Commands continued 80 Table 4 Alpha...

Page 13: ...ument or in this manual Symbol Description AC Alternating Current AC DC Battery CE Complies with European Union Directives DC Direct Current Double Insulated Electric Shock Fuse PE Ground Hot Surface...

Page 14: ...gs To avoid personal injury follow these guidelines DO NOT use this unit in environments other than those listed in the User s Guide Follow all safety guidelines listed in the User s Guide Calibration...

Page 15: ...dam age 1 2 2 Cautions If the instrument is dropped struck or handled in a way that causes inter nal or external physical damage immediately unplug the AC adapter re move the battery discontinue use...

Page 16: ...DS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDesk fluke nl Fluke Int l Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100...

Page 17: ...37 5155 E mail antng singa fluke com When contacting these Service Centers for support please have the following information available Model Number Serial Number Voltage Complete description of the pr...

Page 18: ...f data transfer to and from a PC Visual and audio alarms for various alarm or fault conditions May be wall mounted or set on a bench top Detachable sensors contain their own calibration data for easy...

Page 19: ...gned a unique 16 character identification Display 240 x 128 graphics monochrome LCD displays temperature and humidity data graphically numerically and statistically 16 pre defined user changeable scre...

Page 20: ...22 F Relative Humidity 0 to 100 RH AC Adapter Operating Temperature 0 C to 40 C 32 F to 104 F Relative Humidity 5 to 90 non condensing de rating from 40 C lin early to 50 at 70 C General to all Pressu...

Page 21: ...ir the product and bill the purchaser for the reasonable cost of repair To exercise this warranty the purchaser must forward the product after calling or writing a Hart Authorized Service Center see S...

Page 22: ...Use Proper Care First and most important is to understand the safety issues related to the thermo hygrometer Carefully read Section 1 2 Safety Information The thermo hygrometer and sensors used with...

Page 23: ...below the stand on the back panel To switch the power on toggle the power switch to the position To switch power off toggle the power switch to the position The instrument takes a few seconds to power...

Page 24: ...reen are as follows Enter Menu This button is used to display the menu options Exit This button is used to display the alarm window With the alarm window displayed the Exit button can be used to retur...

Page 25: ...a value or option when editing a pa rameter When editing some numeric or alpha numeric parameters these but tons are used to move among digits or characters IR Port The infrared window provides a mea...

Page 26: ...5 4 Left Side Panel The left side panel consists of the DC power socket the RS 232 port and the data card slot 12V DC Power Socket The DC plug of the AC adapter plugs into the 12V DC power socket to...

Page 27: ...a flat surface Battery Compartment The battery compartment holds a 9V alkaline battery used as a backup power source to maintain continuous measurement during a power outage see Section 6 2 Battery Po...

Page 28: ...adout wall mount bracket power supply Model 2361 and an RS 232 cable 5 8 Accessories The following accessories are available to compliment either the high accuracy or standard thermo hygrometer readou...

Page 29: ...Model 2361 Spare Power Supply 100 240 VAC to 12 VDC Model 9936 LogWare III single PC license Model LIC 9936 LogWare III license for additional PCs 20 Hart Scientific 5 Parts and Controls...

Page 30: ...dapter plugs into the 12 V DC power input on the left side of the instrument see Figure 3 on page 17 6 2 Battery The thermo hygrometer uses a 9V battery to maintain continuous measurement and recordin...

Page 31: ...100 ft in length When a sensor is attached the thermo hy grometer detects the sensor automatically reads its calibration parameters and begins to measure if the channel is enabled see Section 6 9 Mea...

Page 32: ...ent period is also set with this function 6 10 Unit of Temperature The thermo hygrometer is capable of displaying temperature in Celsius C or Fahrenheit F The unit of temperature applies to temperatur...

Page 33: ...when there is a source of radiated heat that is seen by the sensor Radiated heat tends to heat up the sensor higher than the air around it try shining a flashlight on the sensor from some distance awa...

Page 34: ...power The sensor takes some time to respond to large changes in temperature or hu midity such as for instance when the sensor is brought from a cold or humid location to a warm or dry one Depending on...

Page 35: ...main menu of the thermo hygrometer The main menu consists of the submenus CHAN NEL DISPLAY DATA ALARM and SYSTEM Most of the menu options may be password protected to prevent them from being changed...

Page 36: ...nd execute menu choices The ud buttons are used to scroll through the functions The Exit button is used to return from a function to the previous menu The Exit button may be pressed and held to quickl...

Page 37: ...s are turned on or off by selecting the channel and then the ON or OFF setting using the lr buttons MEA PER measurement period is the time interval at which the measurements are updated on the display...

Page 38: ...s the rate of change is calculated using the most recent measurement and the measurement obtained RATE T time ago If there are as yet insufficient measurements to calculate the rate of change only dot...

Page 39: ...ace and un derscore can be used Press the Enter button to save the setting Press the Exit button to cancel any changes and exit to the menu 7 1 3 Sensor Lock The SENSOR LOCK function locks each sensor...

Page 40: ...ssword protected see Section 7 5 4 PASSWORD If an incorrect password or no password is entered the parameters are displayed but cannot be edited If a correct password is entered the channel sensor mod...

Page 41: ...the setting and exit Press the Exit button to cancel any changes and exit to the menu 1620 the DewK 33 7 Menu Functions Figure 11 Sensor Cal Figure 12 Sensor Channel Select...

Page 42: ...ed Press the Enter button to save the new settings The values are stored in the sensor Press the Exit button to cancel any changes and exit to the menu 7 2 Display Menu The DISPLAY menu provides funct...

Page 43: ...RH The decimal preference is selectable between a period and a comma The available units of measure are degrees C and degrees F The contrast can be adjusted here using the lr buttons Setting the adjus...

Page 44: ...of zones is selected you can select what is to be displayed in each zone The lr buttons are used to select the parameter setting The ud buttons are used to move between each parameter Press the Enter...

Page 45: ...rawn with dotted lines Graphs are replotted when a different display layout is selected a display lay out s settings are changed or graph scale settings are changed Data for the graphs are extracted f...

Page 46: ...ALAR temperature alarm count T DELT temperature delta difference from the other channel RHUM most recent relative humidity measurement H RATE humidity rate of change H AVE relative humidity statistica...

Page 47: ...ngs for each zone 1 2 3 or 4 Graph settings for each zone are used in common among all display layouts This may be password protected see Section 7 5 4 Password For each zone you may set the center of...

Page 48: ...00 000 to 0 100 H CENT from 100 000 to 0 000 H SCAL from 100 000 to 1 000 TIME from 1 4 10 24 hours and 2 5 7 15 30 days DIVS from 1 2 4 6 8 10 40 Hart Scientific 7 Menu Functions Figure 17 Graph Scal...

Page 49: ...on to edit and save the new setting Press Exit button to can cel any changes and exit to the menu On the last parameter press the Enter button to exit to the menu 1620 the DewK 41 7 Menu Functions Fig...

Page 50: ...pass word protected see Section 7 5 4 Password Use the Enter button to reset the display settings Press the Exit button to can cel any changes and exit to the menu 7 3 Data Menu The DATA menu contains...

Page 51: ...measurements up to the start of the next data block A new data block is started when the thermo hy grometer is powered on when record setting parameters are changed and when data is printed or writte...

Page 52: ...y be password protected see Sec tion 7 5 4 Password The temperature and humidity from each channel can be recorded and the recording period is selectable To record the temperature on sensor channel 1...

Page 53: ...en filled the oldest block of data will be discarded to allow new data to be recorded Measurement storage capacity can range between 28 hours and 2 years depend ing on the record period and enabled ch...

Page 54: ...to change The lr buttons are used to change the setting parameters Press the Enter button to save the new set ting Press the Exit button to cancel any changes and exit to the menu 46 Hart Scientific 7...

Page 55: ...7 3 1 2 Data View The DATA VIEW function allows viewing recorded data in NUMERIC or GRAPHIC format 1620 the DewK 47 7 Menu Functions Figure 23 Data View Begin Time Figure 24 Data View Numeric Format...

Page 56: ...Date Time The format of the start time is 24 hour format Press the Enter button to display the data for the selected starting date and time in graphical format Press the Exit button to cancel any chan...

Page 57: ...rt printing The format of the start date is according to D FORM in SYSTEM DATE TIME Section 7 5 2 The format of the start time is 24 hour format The lr buttons are used to change the parameters Press...

Page 58: ...rameter shows the number of bytes stored The CAP parameter shows storage capacity in bytes The INDEX parameter shows percentage of space used in the record block index The BEGIN parameter is the date...

Page 59: ...day Up to 60 days of statistics are stored Earliest statistics are erased automatically if needed to store another day s statistics DAILY STATS can be set up to automatically store the running statist...

Page 60: ...recorded after the last mea surement of the day AUT RES enables ON or disables OFF automatic reset of the statistics and may be set from 00 00 to 23 00 RES TIM sets the hour when the statistics are a...

Page 61: ...Press the Enter button to save the new setting Press the Exit button to cancel any changes and to exit to the menu 7 3 2 2 Stats View The STATS VIEW function is used to view daily statistics Select a...

Page 62: ...r the channel and measurement type The lr buttons are used to change the setting parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the m...

Page 63: ...ting see Section 7 5 3 2 IR Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 3 2 4 Stats Reset The STATS RESET function resets current...

Page 64: ...button is pressed the operation is canceled 7 3 2 5 Stats Clear The STATS CLEAR function clears all daily statistics stored in memory After pressing the Enter button a WARNING message will appear req...

Page 65: ...n is pressed the operation is cancled 7 3 3 Data Card The DATA CARD function allows data to be written to a file on a data card or data in a binary rec file to be viewed The DATA CARD options are FILE...

Page 66: ...written to a data card Choosing END for the END param eter will automatically select the most recent reading as the END parameter After the BEGIN and END parameters are entered and the Enter button i...

Page 67: ...in a graphic format The CHAN parameter allows you to select the channel from which to view the data Use T CENT T SCAL H CENT and H SCAL to set the vertical axis center and scale for the temperature an...

Page 68: ...7 5 4 Password The ud buttons are used to select the menu option The lr buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel...

Page 69: ...option The lr buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 4 2 Sensor Alarm The SE...

Page 70: ...rameter is the lower limit alarm The L ENAB parameter is used to turn the lower limit alarm ON or OFF The UPPER parameter is the upper limit alarm The U ENAB parameter is used to turn the upper limit...

Page 71: ...20 seconds until power is restored or the battery is discharged The ud buttons are used to select the menu option The lr buttons are used to change the parameter setting Press the Enter button to sav...

Page 72: ...ess the Exit button to retain any alarms and exit to the menu 7 5 System Menu The SYSTEM menu provides access to the general settings for the system such as temperature unit date and time the communic...

Page 73: ...to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 5 1 System Setting The SYSTEM SETTING function allows you to change the temperature mea surement unit The UNI...

Page 74: ...Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 5 2 Date Time The DATE TIME function is used for setting the time of day clock time for mat date...

Page 75: ...ime The choices are 12 hour format or 24 hour format The DAY parameter allows the user to set the current day of the month 1 31 The MONTH parameter allows the user to set the current month 1 12 The YE...

Page 76: ...r makes no attempt to plot the data prior to the time shift there will appear to be missing data on the left side of the graph Graphs drawn using the DATA VIEW function behave similarly when time dis...

Page 77: ...irst be selected The selections are SERIAL IR and ERRORS The ERRORS setting allows the user to view any error messages stored in the error queue Once an error has been viewed it is removed from the er...

Page 78: ...et the echo duplex mode Selecting ON enables echoing so that all characters received on the serial port are echoed back over the serial port Echo mode ON is useful when using terminal emula tion softw...

Page 79: ...simple ASCII format The IRDA option allows the user to print data to an IrDA compatible printer such as an HP LaserJet 2100 Automatic real time printing is not available with the IrDA mode The OFF opt...

Page 80: ...password is entered the message WRONG PASSWORD is dis played and access to the password protected parameters is denied Press the ENTER button to reenter the password If a correct password is entered t...

Page 81: ...setting Press the Exit button to cancel any changes and to move to the next parameter or exit to the menu Note Keep your password in a secure location and do not forget the pass word 7 5 5 System Inf...

Page 82: ...d in Section 7 5 3 Comm Setting 8 2 1 Serial Wiring The serial communications cable at taches to the thermo hygrometer readout through the RS 232 port on the left side of the instrument Figure 50 show...

Page 83: ...t mnemonics have a long form that is more readable and a short form consisting of three or four characters that is more efficient A mnemonic may end with a numeric suffix that specifies one of a set o...

Page 84: ...1 5 ALARm CLEar Clears the alarm events Section 8 4 1 6 ALARm DATE FIRST Returns the date of the first alarm event Section 8 4 1 7 ALARm DATE LAST Returns the date of the latest alarm event Section 8...

Page 85: ...W ENABle Returns the state of the low temperature alarm enable for the speci fied channel Section 8 4 1 33 ALARm TEMPerature chn LOW ENABle bool Enables or disables the low temperature alarm for the s...

Page 86: ...8 4 6 5 CALibrate chn DATe DUE year month day Sets the sensor calibration due date for the specified channel Section 8 4 6 6 CALibrate chn EXPiration Returns the sensor calibration expiration for the...

Page 87: ...DATa DSTat RHOur Returns the statistics reset time Section 8 4 3 7 DATa DSTat RHOur num MIN MAX DEF Sets the statistics reset time Section 8 4 3 8 DATa DSTat RECord BTIMe num Returns the daily stats r...

Page 88: ...chn Returns the channel state Section 8 4 5 3 ROUTe OPEN chn Disables the specified channel Section 8 4 5 4 SENSor AVERage Returns the state of the measurement averaging Section 8 4 4 3 SENSor AVERag...

Page 89: ...ED bool Enanbles or disables the serial port auto printing Section 8 4 8 8 SYSTem COMMunica SERial LINefeed Returns the state of the serial port linefeed Section 8 4 8 9 SYSTem COMMunica SERial LINefe...

Page 90: ...e time password protection Section 8 4 10 13 SYSTem PASSword TIME bool Enables or disables the date time password protection Section 8 4 10 14 SYSTem POWer BATTery Returns the battery level percent Se...

Page 91: ...rmats Password Commands commands for enabling and disabling the password for setting the password and for checking the password protection state Status Commands commands to report the status and condi...

Page 92: ...tes a one or two digit number for the second is required baud indicates a valid baud rate setting is required For query commands specifying the MIN MAX or DEF parameter causes the instrument to respon...

Page 93: ...ands 8 4 1 4 ALARm BEEP Returns the state of the audible alarm enable Example ALAR BEEP Response 0 A value of 1 is returned if the alarm beep is enabled A value of 0 is returned if the alarm beep is d...

Page 94: ...onse 0 A value of 1 is returned if the alarm display is enabled A value of 0 is returned if the alarm display is disabled 8 4 1 10 ALARm DISPlay bool Sets the state of the visible alarm enable Example...

Page 95: ...RHUM1 LOW Response 0 The RHUMidity suffix chn specifies the channel 1 or 2 A value of 1 is returned if a lower humidity alarm event has occurred on the specified channel A value of 0 is returned if a...

Page 96: ...ecifies the channel 1 or 2 The float pa rameter specifies the value for the lower humidity alarm limit Specifying the MIN MAX or DEF parameter sets the lower humidity alarm limit to the mini mum maxim...

Page 97: ...1 or 2 Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively 8 4 1 23 ALARm RHUMidity chn RATE LIMit float MIN MAX DEF Sets the humidity rate alarm limit f...

Page 98: ...on 1 or ON or off 0 or OFF This command may be password protected see Section 8 4 10 Password Commands 8 4 1 27 ALARm RHUMidity chn UPPer Indicates whether an upper humidity alarm event has occurred...

Page 99: ...t MIN MAX DEF Sets the upper humidity alarm limit for the specified channel in RH Example ALAR RHUM1 UPP LIM 65 00 The RHUMidity suffix chn specifies the channel 1 or 2 The float pa rameter specifies...

Page 100: ...rns the lower temperature alarm limit for the specified channel in degrees C or F Example ALAR TEMP1 LOW LIM Response 18 00 The TEMPerature suffix chn specifies the channel 1 or 2 The value re turned...

Page 101: ...is returned if the temperature rate alarm is disabled 8 4 1 39 ALARm TEMPurature chn RATE ENABle bool Sets the state of the temperature rate alarm enable for the specified channel Example ALAR TEMP1 R...

Page 102: ...el 1 or 2 A value of 1 is returned if a temperature sensor alarm event has occurred on the specified channel A value of 0 is returned if a temperature sensor alarm event has not occurred on the specif...

Page 103: ...f 0 is returned if the upper temperature alarm is disabled 8 4 1 47 ALARm TEMPurature chn UPPer ENABle bool Sets the state of the upper temperature alarm enable for the specified channel Example ALAR...

Page 104: ...s the time of the first alarm event Example ALAR TIME FIRS Response 15 43 13 The response is returned in the format hour minute second 8 4 1 51 ALARm TIME LAST Returns the time of the last alarm event...

Page 105: ...es temperature 1 or relative humidity 2 The AVER age suffix type specifies the statistic average 1 standard deviation 2 minimum 3 maximum 4 spread 5 maximum rate 7 or alarm count 8 Temperature values...

Page 106: ...e time span in seconds Example CALC PAR RATE TIME Response 300 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively 8 4 2 10 CALCulate chn PARameter num R...

Page 107: ...16 11 2 38 Example 2 FETC Response 25 582 29 32 26 341 37 96 or Response 1 1 25 629 C 29 29 2 0 C 0 2003 9 16 11 1 42 The chn parameter is optional and specifies the channel 1 or 2 If the chn paramet...

Page 108: ...TDST STATe Returns the time and date stamp enable for the FETC MEAS and READ commands Example FORM TDST STAT Response 0 A value of 1 is returned if the time and date stamp is enabled A value of 0 is...

Page 109: ...Data Commands The data commands are used to access daily statistics or recorded measurements 8 4 3 1 DATa DSTatistics ENABle Returns the state of the daily statistics recording enable Example DAT DST...

Page 110: ...Password Commands 8 4 3 5 DATa DSTatistics RENable Returns the state of the daily statistics reset enable Example DAT DST REN Response 0 A value of 1 is returned if the daily statistics reset is enabl...

Page 111: ...fies the daily statistics record number If none is specified then record 1 is assumed The response is returned in the format hour minute second 8 4 3 10 DATa DSTatistics RECord CLEar Clears all daily...

Page 112: ...n date a 0 is returned 8 4 3 15 DATa DSTatistics RECord VALue num chn type Returns the daily statistics statistical calculation Example DAT DST REC VAL 1 1 1 Response 25 559 0 733 23 097 27 203 4 106...

Page 113: ...ssword Commands 8 4 3 19 DATa RECord FEED TEMPerature chn Returns the state of the temperature recording enable for the specified channel Example DAT REC FEED TEMP1 Response 1 The TEMPerature suffix c...

Page 114: ...en This set of pa rameters is optional but if specified all parameters are required If not specified all data in memory is opened for reading The second set of year month day hour minute and second pa...

Page 115: ...mple DAT REC TIME 60 The num parameter indicates the number of seconds between recording readings to memory Specifying the MIN MAX or DEF parameter sets the data recording period to the minimum maximu...

Page 116: ...if the sensor lock is disabled 8 4 4 6 SENSor chn LOCK bool Sets the sensor lock for the specified channel Example SENS1 LOCK 1 The bool parameter turns the sensor lock on 1 or ON or off 0 or OFF This...

Page 117: ...specifies the channel 1 or 2 The response to this command is a number that indicates the state of the sensor on the specified channel A value of 0 indicates a sensor is connected and reading properly...

Page 118: ...lue respectively The RST command sets the measure ment period to 2 seconds This command may be password protected see Sec tion 8 4 10 Password Commands 8 4 5 Channel Commands The channel commands are...

Page 119: ...ALER Response 0 The CALibrate suffix chn specifies the channel 1 or 2 A value of 1 is re turned if the calibration alert is enabled for the specified channel A value of 0 is returned if the calibrati...

Page 120: ...year month day Sets the sensor calibration due date for the specified channel Example CAL1 DATE DUE 2004 9 17 The CALibrate suffix chn specifies the channel 1 or 2 The year month and day parameters mu...

Page 121: ...n specifies the channel 1 or 2 The SCALe suffix num specifies either temperature 1 or humidity 2 8 4 6 11 CALibrate chn PARameter SCALe num float Sets the sensor calibration scale parameter for the sp...

Page 122: ...mmand is issued Sets the measurement period to 2 seconds Sets the measurement averaging on Sets printing to the serial port Sets the temperature units to C Sets the temperature resolution to 2 decimal...

Page 123: ...mple SYST VERS Response 1994 0 8 4 7 8 UNIT TEMPerature Returns the system temperature unit Example UNIT TEMP Response C The response is either C for Celsius or F for Fahrenheit 8 4 7 9 UNIT TEMPeratu...

Page 124: ...N MAX or DEF parameter returns the minimum maxi mum or default value respectively 8 4 8 4 SYSTem COMMunicate SERial BAUD baud MIN MAX DEF Sets the serial port baud rate setting Example SYST COMM SER B...

Page 125: ...e RST command sets the serial port auto printing to OFF 8 4 8 9 SYSTem COMMunicate SERial LINefeed Returns the state of the serial port linefeed setting Example SYST COMM SER LIN Response 1 A value of...

Page 126: ...the state of the button panel lockout Example SYST KLOC Response 0 A value of 1 is returned if the button panel is locked out A value of 0 is re turned if the button panel is enabled unlocked 8 4 8 1...

Page 127: ...at used for the display Example SYST DATE FORM Response 1 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively Section 8 4 13 Date and Time Formats shows...

Page 128: ...IME Response 11 43 23 The response is returned in the format hour minute second Note The system time is always returned using 24 hour format regardless of the clock time format setting 8 4 9 8 SYSTem...

Page 129: ...se 1 A value of 0 is returned if the time format is set to 12 hour A value of 1 is re turned if the time format is set to 24 hour Specifying the MIN MAX or DEF parameter returns the minimum maximum or...

Page 130: ...STem PASSword CENable pass Enables access to password protected settings Example SYST PASS CEN 1234 The pass parameter must match the current system password This command must be sent to allow the use...

Page 131: ...n Example SYST PASS REC 1 The bool parameter turns the data recording password protecton on 1 or ON or off 0 or OFF This command is password protected Commands pro tected with this setting are DATA RE...

Page 132: ...DST 8 4 10 13 SYSTem PASSword TIME Returns the state of the date and time password protection Example SYST PASS TIME Response 0 A value of 1 is returned if the date and time password protection is ena...

Page 133: ...to 255 that is the sum of the binary weighted values of each mask bit The Event Status Register is described in Section below The following exam ple causes the ESB bit in the Status Byte Register to...

Page 134: ...w Example SRE Response 0 8 4 11 6 SRE num MIN MAX DEF This command sets the Service Request Enable Register This register deter mines which event bits of the Status Byte Register affect the MSS Master...

Page 135: ...mask bit in the Standard Event Enable Register is set It is cleared when the Standard Event Register is read Bit 6 Master Summary Bit Indicates that any other bit in the Status Byte Register is set a...

Page 136: ...tification is invalid bit 6 is 1 sensor version number is incompatible bit 7 is 1 sensor is locked out 3rd number channel 2 sensor test see channel 1 sensor test 4th number sensor calibration expired...

Page 137: ...power on bit 4 is 1 left pressed during power on bit 5 is 1 ENTER pressed during power on 8 4 11 9 STATus ALARm This command reads and clears the Alarm Status Event Register The value re turned indica...

Page 138: ...t 5 Power failure alarm bit Bit 6 Not used Bit 7 Not used Example STAT ALAR Response 32 8 4 11 11 STATus ALARm ENABle This command returns the Alarm Status Enable Register see STA Tus ALARm ENABle num...

Page 139: ...y measure bit Bit 2 Channel 2 temperature measure bit Bit 3 Channel 2 humidity measure bit Bit 4 Channel 1 sensor attached detached Bit 5 Channel 2 sensor attached detached Bit 6 Not used Bit 7 Not us...

Page 140: ...l be set The value of the num parameter is a number from 0 to 15 that is the sum of the binary weighted values of each mask bit The Measure Status Event Reg ister is described in Section 8 4 11 13 STA...

Page 141: ...icant and 7 is the most significant 0 no operation Bit 0 Not used Bit 1 Not used Bit 2 Not used Bit 3 Not used Bit 4 Measurement complete bit Bit 5 Not used Bit 6 Not used Bit 7 Not used Example STAT...

Page 142: ...ionable Status Event Register The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 i...

Page 143: ...Status Byte Register If any bit in the Question able Status Event Register is set 1 while its corresponding mask bit in the Questionable Status Enable Register is set the Questionable Status Bit in t...

Page 144: ...ceptable date and time formats and their number setting Date Formats Number Format 0 MM DD YY 1 MM DD YYYY 2 DD MM YY 3 DD MM YYYY Time Formats Number Format 0 H MM SSAM PM 12 hour format 1 HH MM SS 2...

Page 145: ...ecommended PRT and associated readout to use as the reference thermometer 0 03 C uncertainty or better is recommended 1620 Thermo Hygrometer to use to read the 2626 x sensor An extension cable to conn...

Page 146: ...0 C 45 20 C 70 20 C 9 4 Temperature and Humidity Measurement Errors The temperature and humidity measurement errors for the sensor are obtained at each of the calibration points This test is performed...

Page 147: ...ers can be accessed using the SENSOR CAL function in the CHANNEL menu The password is required to change the parameters Calculation of new calibration parameters requires that the measurement errors f...

Page 148: ...the adjustment HOS to the humidity offset parameter HOS and the new humidity offset parameter RHmedian RHerror RH RHerror RH 3 2 2 HOS RHmedian HOS HOS HOS 7 Enter the new values for TOS TOS TSL TSL H...

Page 149: ...amination steps as outlined by the national safety council with respect to the material Before using any cleaning or decontamination method except those rec ommended by Hart users should check with an...

Page 150: ...e set to a long interval Check the measure pe riod setting Refer to Section 6 12 Sensors for information on proper sensor handling and situations that can affect accuracy 11 1 2 Missing or Scattered G...

Page 151: ...E Cycle the power Contact an Authorized Service Center BATTERY NOT INSTALLED Check that a battery is properly installed Replace the battery CLOCK INVALID TIME Set the time date MEMORY DATA EMPTY Conta...

Page 152: ...er in troubleshooting and solving the problem that has oc curred Without this information it can be difficult to find the cause of the error Before contacting an Authorized Service Center for assistan...

Page 153: ...red using the IR port with LogWare III software or written to a file with a data card see Section 7 3 3 1 File Write 11 3 Placement of IR Dongle for Transfer of Data The thermo hygrometer can be used...

Page 154: ...conditions at 2kV the instrument may re quire the user to cycle the power to return to normal operation 11 4 1 2 Emission Testing The instrument fulfills the limit requirements for Class A equipment...

Page 155: ...ata Record Q How do I get data from the 1620 A The 1620 allows you to download data using a RS232 or IR connection to a computer or printer You may also use a data card to transfer data to and from th...

Page 156: ...ock 66 commands 75 76 communication 69 75 condensation 25 contrast 22 35 D daily statistics 51 53 56 68 data card 57 data recorded 43 58 date 36 38 66 daylight saving 67 decimal 35 delta 38 dew point...

Page 157: ...splay 42 reset statistics 52 55 resolution 35 response time 25 RS 232 69 75 S safety information 2 self heating 24 self test 22 145 sensor 14 16 19 22 24 62 sensor accuracy 24 sensor calibration 32 13...

Page 158: ...warranty 10 Z zones display 36 153 Index...

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