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Table of Contents
Related Manuals for Hart Sceintific DewK 1620
Summary of Contents for Hart Sceintific DewK 1620
- Page 1 1620, the “DewK” Thermo-Hygrometer User’s Guide Rev. 4B1801...
- Page 2 Hart Scientific, 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. • Copyright © 2003 • Printed in USA Rev. 4B1801...
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Page 3: Table Of Contents
Table of Contents 1 Before You Start ......1 1.1 Symbols Used ........1 1.2 Safety Information . - Page 4 6.1 DC Power Source ........21 6.2 Battery.
- Page 5 7.4.3 System Alarm..........62 7.4.4 Alarm View .
- Page 6 8.4.1.33 ALARm:TEMPurature<chn>:LOWer:ENABle? ......93 8.4.1.34 ALARm:TEMPurature<chn>:LOWer:ENABle <bool> ..... . . 93 8.4.1.35 ALARm:TEMPurature<chn>:LOWer:LIMit? [MIN|MAX|DEF].
- Page 7 8.4.3.20 DATa:RECord:FEED:TEMPerature<num> <bool> ......106 8.4.3.21 DATa:RECord:FREE? ........106 8.4.3.22 DATa:RECord:OPEN? .
- Page 8 8.4.8.9 SYSTem:COMMunicate:SERial:LINefeed? ......118 8.4.8.10 SYSTem:COMMunicate:SERial:LINefeed <bool>......118 8.4.8.11 SYSTem:COMMunicate:SERial:TIMe? [MIN|MAX|DEF] .
- Page 9 8.4.11.22 STATus:QUEStionable:CONDition?....... . 135 8.4.11.23 STATus:QUEStionable:ENABle? ....... . . 136 8.4.11.24 STATus:QUEStionable:ENABle <num>|MIN|MAX|DEF .
- Page 10 Figures Figure 1 Front Panel......... . 15 Figure 2 Top Panel .
- Page 11 Figure 42 System Menu......... 65 Figure 43 System Setting .
- Page 12 Tables Table 1 International Electrical Symbols ....... . 1 Table 2 Statistics Zone Field Types .
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Page 13: Before You Start
1 Before You Start Before You Start Symbols Used Table 1 lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual. Table 1 International Electrical Symbols Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives... -
Page 14: Safety Information
1 Before You Start Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATE- GORY II is energy-consuming equipment to be supplied from the fixed installation. Exam- ples include household, office, and laboratory appliances. -
Page 15: Cautions
1 Before You Start from any AC supply, and have it replaced. Do not attempt to open, repair, or continue using a damaged or defective AC adapter. • The instrument battery can present danger if not handled properly. To avoid the risk of exposure to dangerous substances or explosion, immedi- ately remove the battery and discontinue use if it leaks or becomes dam- aged. - Page 16 1 Before You Start Hart Scientific, Inc. 799 E. Utah Valley Drive American Fork, UT 84003-9775 Phone: +1.801.763.1600 Telefax: +1.801.763.1010 E-mail: support@hartscientific.com Fluke Nederland B.V. Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone: +31-402-675300 Telefax: +31-402-675321 E-mail: ServiceDesk@fluke.nl Fluke Int'l Corporation Service Center - Instrimpex...
- Page 17 1 Before You Start SINGAPORE Phone: +65-737-2922 Telefax: +65-737-5155 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 problem 1620 the “DewK”...
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Page 18: Introduction
2 Introduction Introduction The Hart Model 1620 is a low-cost, high-accuracy, digital thermo-hygrometer. Its unique combination of features makes it suitable for a wide variety of appli- cations from laboratory to industrial ambient measurement. Features of the thermo-hygrometer include: • Two channels measure ambient temperature to ±0.125 C and %RH to ±1.5% •... -
Page 19: Specifications And Environmental Conditions
3 Specifications and Environmental Conditions Specifications and Environmental Conditions Specifications Temperature Range 0°C to 50°C Temperature Accuracy 16°C to 24°C: ±0.125°C (calibrated) 0°C to 16°C, 24°C to 50°C: ±0.5°C (uncalibrated typical) (“H” Model) 15°C to 35°C: ±0.25°C (calibrated) Temperature Accuracy (“S”... -
Page 20: Environmental Conditions
3 Specifications and Environmental Conditions Environmental Conditions Although the instrument has been designed for optimum durability and trou- ble-free operation, it must be handled with care. The instrument should not be operated in an excessively dusty, dirty, or wet environment. Maintenance and cleaning recommendations can be found in the Maintenance section of this manual. - Page 21 3 Specifications and Environmental Conditions Software is warranted to operate in accordance with its programmed instruc- tions on appropriate Hart products. It is not warranted to be error free. Hart’s obligation under this warranty is limited to repair or replacement of a product, which is returned to Hart within the warranty period and is deter- mined, upon examination by Hart, to be defective.
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Page 22: Quick Start
4 Quick Start Quick Start This section briefly explains the basics of setting up and operating your thermo-hygrometer. Unpacking Carefully unpack the thermo-hygrometer and inspect the instrument to make sure all components are present and in satisfactory condition. Verify that the following items are present: •... -
Page 23: Connect The Sensor
4 Quick Start kaline battery (NEDA 1604A or IEC 6LR61) is recommended. With a fresh al- kaline battery installed, the thermo-hygrometer will continue to measure and record temperature and relative humidity during a power outage for up to 16 hours, typically. However, without external power, the display will be inoperable. -
Page 24: Parts And Controls
5 Parts and Controls Parts and Controls The functions of the various features of the thermo-hygrometer are described below. Front Panel The front panel buttons Enter/Menu, Up/Down/Left/Right Arrows, and Exit are used to select and alter the functions of the thermo-hygrometer (see Figure 1). Figure 1 Front Panel The buttons have different functions depending on whether the main screen or the menu system is displayed. -
Page 25: Top Panel
5 Parts and Controls Enter/Menu - This button is used to select a menu item, to accept a choice, or save changes to a parameter. Exit - This button is used to return from a menu or window or cancel changes to a parameter. -
Page 26: Left Side Panel
5 Parts and Controls An optional extension cable may be used to allow the sensor to be placed in a remote location. Figure 3 Right and Left Side View Left Side Panel The left side panel consists of the DC power socket, the RS-232 port and the data card slot. -
Page 27: Back Panel
5 Parts and Controls RS-232 Port Connector - This socket is for interfacing the thermo-hygrometer to a computer or terminal using serial RS-232 communications. Data Card Slot - An optional data card is installed in this slot for additional memory storage and data transfer with a computer. Back Panel The back panel contains the stand, power switch, battery compartment, and product information, including serial number. -
Page 28: Configurations
5 Parts and Controls 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 return to the main screen while pre- serving the alarm events or the Enter button can be used to clear the alarm events and return to the main screen. - Page 29 5 Parts and Controls • 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) Hart Scientific...
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Page 30: General Operation
6 General Operation General Operation This section explains basic operation of the thermo-hygrometer. Detailed oper- ation of the thermo-hygrometer is explained in Sections 7 and 8. Section 7 ex- plains the menu structure and the functions available in the menu structure and Section 8 explains the communications interface for operating the thermo-hygrometer remotely. -
Page 31: Sensor Configuration
6 General Operation Turn the thermo-hygrometer over to access the rear battery compart- ment. Press down slightly on the battery cover and slide it out to re- move it. Remove the old battery if one is in place by lifting it up at the bottom and pulling it out. -
Page 32: Display
6 General Operation Display The thermo-hygrometer display is originally configured with six default display layouts enabled. The user can enable and configure any of the 16 display lay- outs to show a variety of data in numerical or graphical format (see Section 7.2.2, Display Layout). -
Page 33: Sensor Accuracy
6 General Operation The sensor contains a memory device that stores information about the sensor and automatically transfers this data to the thermo-hygrometer when the sensor is attached. This ensures that the settings used to measure and calculate temper- ature and humidity always match the sensor being used. Caution: Sensors are fragile devices that can be easily damaged by me- chanical shock, overheating, and exposure to fluids or dust. - Page 34 6 General Operation locities ranging from 0 to 10 cm/s. High velocities can cause even greater errors that can be as large as 0.15°C below the temperature measured at low veloci- ties. Thus, it is recommended that the sensor be located where there is minimal air currents.
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Page 35: Menu Functions
7 Menu Functions Menu Functions Figure 5 Main Display Selecting the Enter/Menu button from the front panel accesses the 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 (see Section 7.5.4, PASSWORD) 1620 the “DewK”... -
Page 36: Figure 6 Main Menu
7 Menu Functions Figure 6 Main Menu Each submenu has its own set of functions. The Enter/Menu button is used to select and 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. -
Page 37: Channel Menu
7 Menu Functions Channel Menu The CHANNEL menu provides functions for selecting the channel, setting the sensor identification, setting the sensor lock, and setting the sensor calibration. The functions that appear in the CHANNEL menu are CHANNEL SETTING, SENSOR ID, SENSOR LOCK, and SENSOR CAL. Figure 7 Channel Menu 7.1.1 Channel Setting... -
Page 38: Figure 8 Channel Setting
7 Menu Functions in the RATE T field of a STATS display zone. The humidity rate is displayed in the RATE H field of a STATS display zone. (See Section 7.2.3.) If RATE T is 5 minutes or less, the rate of change is calculated as the average rate of change using all the measurements obtained during the past RATE T time. -
Page 39: Sensor Id
7 Menu Functions 7.1.2 Sensor ID The SENSOR ID function allows each sensor to be uniquely identified. This may be password-protected to prevent it from being changed (see Section 7.5.4, PASSWORD). The model number and serial number are displayed here but cannot be edited. -
Page 40: Sensor Cal
7 Menu Functions desired location. It uses the sensor serial number to identify the sensor. To ex- change a different sensor, the sensor lock must be set to OFF. Figure 10 Sensor Lock Use the ud buttons to select the sensor to lock. The lr buttons are used to select ON or OFF. -
Page 41: Figure 11 Sensor Cal
7 Menu Functions the setting and exit. Press the Exit button to cancel any changes and exit to the menu. Figure 12 Sensor Channel Select Figure 11 Sensor Cal 1620 the “DewK”... -
Page 42: Display Menu
7 Menu Functions The lr buttons are used to edit the parameter value. The ud buttons are used to move between parameters. Press the Enter button after all of the pa- rameters have been edited. The message ‘STORE VALUES’ is displayed. Press the Enter button to save the new settings. -
Page 43: Display Setting
7 Menu Functions 7.2.1 Display Setting The DISPLAY SETTING function allows you to select the temperature display resolution (T RES), humidity display resolution (H RES), decimal preference, unit of temperature and display contrast. These settings may be password-pro- tected (see Section 7.5.4, Password). The temperature and humidity display resolutions are selectable between 0, 0.1, 0.01, and 0.001. -
Page 44: Display Layout
7 Menu Functions 7.2.2 Display Layout The DISPLAY LAYOUT function allows you configure any of the 16 different display layouts. These settings may be password-protected (see Section 7.5.4, Password). A display layout can be enabled or disabled by choosing ON or OFF. -
Page 45: Field Data
7 Menu Functions STATS: Various statistical values are displayed numerically for the given sen- sor. Statistical values to display can be selected using the FIELD DATA menu function (Section 7.2.3). T/H: Temperature and humidity are displayed numerically for the given sensor. T GRAPH: Temperature history is displayed on a graph for the given sensor. - Page 46 7 Menu Functions the RESTIM hour and AUT RES is enabled for the DAILY STATS (see Section 7.3.2, Daily Stats). Table 2 Statistics Zone Field Types Field Type Description Blank blank field DATE current date TIME current time sensor identification SERN sensor serial number TEMP...
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Page 47: Graph Scale
7 Menu Functions Field Type Description REC CH recording channel/measurement type enable status BATT battery level MEAS seconds to next measurement ------ separating line Figure 16 Field Data Use the lr buttons to change each of the settings. Press Enter to save and continue to the next parameter. -
Page 48: Figure 17 Graph Scale , Select Zone
7 Menu Functions T SCAL from 100.000 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 Figure 17 Graph Scale , Select Zone Hart Scientific... -
Page 49: Figure 18 Graph Scale
7 Menu Functions Figure 18 Graph Scale Use the Enter button 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”... -
Page 50: Display Reset
7 Menu Functions 7.2.5 Display Reset The DISPLAY RESET function allows all display layouts, field data settings and graph scale settings to be reset to original settings. This may be pass- word-protected (see Section 7.5.4, Password). Figure 19 Display Reset Use the Enter button to reset the display settings. -
Page 51: Data Record
7 Menu Functions The functions that appear in this menu are DATA RECORD, DAILY STATS, and DATA CARD. Figure 20 Data Menu Use the ud buttons to select the menu. Press the Enter button to select the menu. Press the Exit button to cancel any changes and exit to the menu. When recording is enabled, measurements are stored in memory at the set pe- riod. -
Page 52: Record Setting
7 Menu Functions The functions that appear in this menu are RECORD SETTING, DATA VIEW, DATA PRINT, DATA STORAGE, and DATA CLEAR. Figure 21 Data Record Use the ud buttons to select the menu. Press the Enter button to select the menu. - Page 53 7 Menu Functions Note: It is recommended that REC PER be set to 5 minutes or more; other- wise, the memory may fill up quickly and redrawing graphs may be slow. Also note that graphs can only be redrawn if the measurement for the channel is being recorded, as the graph data is obtained from recorded data.
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Page 54: Figure 22 Record Setting
7 Menu Functions Figure 22 Record Setting Use the ud buttons to select the setting 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. Hart Scientific... -
Page 55: Data View
7 Menu Functions 7.3.1.2 Data View The DATA VIEW function allows viewing recorded data in NUMERIC or GRAPHIC format. Figure 23 Data View, Begin Time Figure 24 Data View, Numeric Format 1620 the “DewK”... -
Page 56: Data Print
7 Menu Functions The numeric mode displays the data in a numeric format. The BEGIN parame- ter specifies the starting date and time of the data to display. Use the lr but- tons to adjust the start date and time. The format of the start date is according to D FORM in the SYSTEM, DATE-TIME menu function (see Section 7.5.2, Date Time). -
Page 57: Figure 25 Data Print
7 Menu Functions The FORMAT parameter may be set to BINARY or TEXT for the serial port or IRCOMM port. The BEGIN parameter sets the start date and the start time from which to start printing. The format of the start date is according to D FORM in SYSTEM, DATE-TIME (Section 7.5.2). -
Page 58: Data Storage
7 Menu Functions 7.3.1.4 Data Storage The DATA STORAGE function allows viewing the status of the data memory. The FILLED parameter shows the percentage of storage space used. The BYTES parameter shows the number of bytes stored. The CAP parameter shows storage capacity, in bytes. -
Page 59: Data Clear
7 Menu Functions 7.3.1.5 Data Clear The DATA CLEAR function clears the data collected. This function may be password protected (see Section 7.5.4, Password). Figure 27 Data Clear Press the Enter button to clear the data. Press the Exit button to cancel any changes and exit to the menu. -
Page 60: Stats Setting
7 Menu Functions STATS PRINT, STATS RESET, and STATS CLEAR. The DAILY STATS can be password-protected (see Section 7.5.4, Password). Figure 28 Daily Stats The ud buttons are used to select the menu option. The lr buttons are used to change the setting parameters. Press the Enter button to save the new setting. -
Page 61: Stats View
7 Menu Functions the statistics (see Section 7.5.4, Password). DAILY STATS cannot be manually stored. Figure 29 Stats Setting 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 to exit to the menu. -
Page 62: Figure 30 Stats View
7 Menu Functions maximum, spread, number, maximum rate, and alarm are displayed for the channel and measurement type. Figure 30 Stats View 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 menu. -
Page 63: Stats Print
7 Menu Functions 7.3.2.3 Stats Print The STATS PRINT function allows daily statistics to be printed over serial or IR. The PORT setting may be set to SERIAL or IRDA/IR COMM). Either IRDA or IR COMM is available for the IR port depending onthe IR MODE set- ting (see Section 7.5.3.2, IR). -
Page 64: Stats Clear
7 Menu Functions operation. If the Enter button is pressed the stats are reset. If the Exit button is pressed the operation is canceled. Figure 32 Stats Reset 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 requesting a con- Hart Scientific... -
Page 65: Data Card
7 Menu Functions firmation of the operation. If the Enter button is pressed the stats are cleared. If the Exit button is pressed the operation is cancled. Figure 34 Stats Clear 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. -
Page 66: File Write
7 Menu Functions The ud and Enter buttons are used to select the menu function. 7.3.3.1 File Write The FILE WRITE function allows the user to write data to a data card. The FORMAT parameter is selectable between TEXT and BINARY. Figure 35 File Write Note: In order to view the data using the thermo-hygrometer or the LogWare III software, the data must be saved in BINARY format. -
Page 67: Figure 36 File View
7 Menu Functions (.rec) files are found on the data card, a NO FILES FOUND message will be displayed. Figure 36 File View To view a file select the file to open by using the ud buttons and press Enter. You may choose between numeric and graphic format. -
Page 68: Alarm Menu
7 Menu Functions Graphs include time tick marks that occur at hourly intervals for time scales 24 hours or less or at daily intervals for time scales greater than 1 day. Time tick marks are labeled at intervals with the hour or day, labels being placed below and to the right of tick marks. -
Page 69: Sensor Alarm
7 Menu Functions When the DISPLAY parameter is ON, an alert message is displayed when an alarm condition occurs. Figure 38 Alarm Setting 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. -
Page 70: System Alarm
7 Menu Functions To set alarm parameters, a channel number and measurement type (T or H) must first be selected using lr and ENTER buttons. Figure 39 Sensor Alarm The PARAM parameter is selectable between 1/T, 1/H, 2/T, 2/H. The 1 and 2 refer to the channel selected, T is temperature and H is humidity. -
Page 71: Alarm View
7 Menu Functions When the BATTERY alarm is turned ON, an alarm occurs when the battery charge is low. When the POWER alarm is ON and a battery is installed, an alarm occurs when the power is disconnected. This alarm will continue to sound every 20 seconds until power is restored or the battery is discharged. -
Page 72: System Menu
7 Menu Functions flashes at the top of the display and any alarm condition is displayed with the time and date that the alarm occurred. Figure 41 Alarm View Press the Enter button to clear the alarms. Press the Exit button to retain any alarms and exit to the menu. -
Page 73: System Setting
7 Menu Functions menu are SYSTEM SETTING, DATE TIME, COMM SETTING, PASS- WORD, and SYSTEM INFO. Figure 42 System Menu The ud buttons are used to select the menu option. The lr buttons are used to change the parameter settings. Press the Enter button to save the new setting. -
Page 74: Date Time
7 Menu Functions When the measurement unit is changed and the Enter button is selected, the next measurement is displayed in the new measurement unit. Figure 43 System Setting The lr buttons are used to change the setting parameters. Press the Enter button to save the new setting. -
Page 75: Figure 44 Date Time
7 Menu Functions When this function is selected available parameters are HOUR, MINUTE, SECOND, T FORM, DAY, MONTH, YEAR, D FORM, and DAYL S. Figure 44 Date Time The HOUR parameter allows the user to set the time-of-day clock hour (0 through 23). - Page 76 7 Menu Functions Be aware that automatic time changes due to the daylight saving time shift fea- ture, and also manual time changes for that matter, will cause discontinuities in the time that may have unusual effects that should be noted. One possible effect is with recorded daily stats.
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Page 77: Comm Setting
7 Menu Functions 7.5.3 Comm Setting The COMM SETTING function is used to setup the communication parameters for the communication ports. Communications ports are used for communicat- ing with a computer, printer, or other equipment. The thermo-hygrometer in- cludes a serial (RS-232) port and IR port. To edit the settings for a specific port it must first be selected. -
Page 78: Figure 46 Serial
7 Menu Functions played beneath the PORT selection. These parameters are: BAUD, LF, ECHO, SER PER, and PRINT. Figure 46 Serial The BAUD parameter allows the user to select the baud rate for communica- tions on this port. The user may choose between 1200, 2400, 4800, 9600, 19200, 38400, and 57600. -
Page 79: Password
7 Menu Functions Press the lr buttons to change a parameter setting. Use the buttons to move between parameters. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. 7.5.3.2 When the IR port is selected, the MODE parameter for the IR port is displayed beneath the PORT selection. -
Page 80: Figure 48 Password
7 Menu Functions The password must be entered correctly to access the password settings. Press the lr buttons to highlight the digit you want to change. Use the ud but- tons to scroll through the numbers 0-9 to set each digit of the password. Press the ENTER button to accept the password or press the EXIT button to cancel any changes and exit to the menu. -
Page 81: System Info
7 Menu Functions The ALARM parameter allows the user to turn the password-protection of alarm settings ON or OFF. The TIME parameter allows the user to turn the password-protection of time and date settings ON or OFF. Press the lr buttons to highlight the digit to change. Use the buttons to scroll through the numbers 0-9. -
Page 82: Digital Communications Interface
8 Digital Communications Interface Digital Communications Interface Overview The communication feature allows an external device, such as a computer, to communicate with the thermo-hygrometer readout to obtain measurement data and control operation settings. Communication is accomplished by issuing commands to the thermo-hygrometer readout through RS-232 or IR communication ports. -
Page 83: Interface Commands
8 Digital Communications Interface Interface Commands 8.3.1 Command Summary An alphabetical listing of the commands implemented by the thermo-hygrome- ter readout are shown in Table 4 starting on page 77. These commands can be used with either serial or IR communications ports. 8.3.2 Command Syntax The thermo-hygrometer readout accepts commands that set parameters, execute... -
Page 84: Figure 37 Alarm
8 Digital Communications Interface Table 4 Alphabetical List Commands Command Description Refer To *CLS Clear the status registers Section 8.4.11.1 *ESE? Returns the Standard Event Status Enable register Section 8.4.11.2 *ESE <num>|MIN|MAX|DEF Sets the Standard Event Status Enable register Section 8.4.11.3 *ESR? Returns the Standard Event Status register Section 8.4.11.4... - Page 85 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To ALARm:RHUMidity<chn>:RATE:LIMit Sets the humidity rate alarm limit for the specified channel Section 8.4.1.23 <num>|MIN|MAX|DEF ALARm:RHUMidity<chn>:SENSor? Returns the state of the humidity sensor alarm for the specified Section 8.4.1.24 channel ALARm:RHUMidity<chn>:SENSor:ENABle? Returns the state of the humidity sensor alarm enable for the speci-...
- Page 86 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To ALARm:TEMPerature<chn>:UPPer? Returns the state of the high temperature alarm for the specified Section 8.4.1.45 channel ALARm:TEMPerature<chn>:UPPer:ENABle? Returns the state of the high temperature alarm enable for the spec- Section 8.4.1.46 ified channel ALARm:TEMPerature<chn>:UPPer:ENABle <bool>...
- Page 87 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To CALCulate<chn>:PARameter<num>: Returns a running statistic for the specified channel Section 8.4.2.6 AVERerage<num>:DATA? CALCulate[<chn>]:PARameter<num>: Returns statistical type for the specified channel (temperature, hu- Section 8.4.2.7 AVERerage<num>:TYPE? midity, type) CALCulate<chn>:PARameter<num>:RATE? Returns rate calculation for the specified channel Section 8.4.2.8 CALCulate[<chn>]:PARameter[<num>]:RATE:TIME?
- Page 88 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To DATa:RECord:OPEN Opens the range of data for reading Section 8.4.3.23 (<year>,<month>,<day>,<hour>,<minute>,<sec- ond>[,<year>,<month>,<day>,<hour>,<min- ute>,<second>) DATa:RECord:READ? [<num>] Returns a group of data Section 8.4.3.24 DATa:RECord:TIMe? Returns the data recording timer Section 8.4.3.25 DATa:RECord:TIMe <num>|MIN|MAX|DEF Sets the data recording timer...
- Page 89 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To STATus:OPERation? Returns and clears the operation status event Section 8.4.11.17 STATus:OPERation:CONDition? Returns the operation status condition Section 8.4.11.18 STATus:OPERation:ENABle? Returns the operation status enable Section 8.4.11.19 STATus:OPERation:ENABle <num>|MIN|MAX|DEF Sets the operation status enable Section 8.4.11.20 STATus:QUEStion?
- Page 90 8 Digital Communications Interface Alphabetical List Commands continued Command Description Refer To SYSTem:PASSword:NEW <num>|DEF Sets the new password Section 8.4.10.6 SYSTem:PASSword:RECord? Returns the state of the data recording password protection Section 8.4.10.7 SYSTem:PASSword:RECord <bool> Enables or disables the data recording password protection Section 8.4.10.8 SYSTem:PASSword:SENSor? Returns the state of the sensor settings password protection...
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Page 91: Commands
8 Digital Communications Interface Commands Table 4, Alphabetical List of Commands, lists the commands in alphabetical or- der. In this section the commands are arranged into the following groups: Alarm Commands - commands for alarm settings. Measurement Commands - commands for reading measurement data. Data Commands - commands for setting and reading data information Measurement Control Commands - commands for the timing and action of the measurement process. -
Page 92: Alarm Commands
8 Digital Communications Interface • <bool> indicates a boolean value (0 or 1) is required. The mnemonics OFF and ON are also accepted for 0 and 1, respectively. • <unit> indicates a temperature unit (C or F) is required. • <float> indicates a floating point value is required. •... -
Page 93: Alarm:battery:enable
8 Digital Communications Interface 8.4.1.2 ALARm:BATTery:ENABle? Returns the state of the battery alarm enable. Example: ALAR:BATT:ENAB? Response: 0 A value of 1 is returned if the battery alarm is enabled. A value of 0 is returned if the battery alarm is disabled. 8.4.1.3 ALARm:BATTery:ENABle <bool>... -
Page 94: Alarm:date:last
8 Digital Communications Interface Example: ALAR:DATE:FIRS? Response: 2003,8,10 The response is returned in the format, <year>,<month>,<day>. If no alarm has been triggered, the response is: 2000,0,0. 8.4.1.8 ALARm:DATE:LAST? Returns the date of the last alarm event. Example: ALAR:DATE:LAST? Response: 2003,8,10 The response is returned in the format, <year>,<month>,<day>. -
Page 95: Alarm:power:enable
8 Digital Communications Interface 8.4.1.12 ALARm:POWer:ENABle? Returns the state of the power loss alarm enable. Example: ALAR:POW:ENAB? Response: 0 A value of 1 is returned if the power loss alarm is enabled. A value of 0 is re- turned if the power loss alarm is disabled. 8.4.1.13 ALARm:POWer:ENABle <bool>... -
Page 96: Alarm:rhumidity
8 Digital Communications Interface The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> pa- rameter turns the lower humidity alarm enable on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.4.10, Password Commands).:Lower:limit? [Min|Max|Def] -
Page 97: Alarm:rhumidity
8 Digital Communications Interface The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if the humidity rate alarm is enabled. A value of 0 is returned if the humidity rate alarm is disabled. 8.4.1.21 ALARm:RHUMidity<chn>:RATE:ENABle <bool>...:Rate:enable -
Page 98: Alarm:rhumidity
8 Digital Communications Interface nel. A value of 0 is returned if a humidity sensor alarm event has not occurred on the specified channel. 8.4.1.25 ALARm:RHUMidity<chn>:SENSor:ENABle? Returns the state of the humidity sensor alarm enable for the specified channel. Example: ALAR:RHUM1:SENS:ENAB? Response: 0 The RHUMidity suffix, <chn>, specifies the channel (1 or 2).:Sensor:enable -
Page 99: Alarm:rhumidity
8 Digital Communications Interface 8.4.1.29 ALARm:RHUMidity<chn>:UPPer:ENABle <bool> Sets the state of the upper humidity alarm enable for the specified channel. Example: ALAR:RHUM1:UPP:ENAB 1 The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> pa- rameter turns the upper humidity alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.4.10, Password Commands).:Upper:enable -
Page 100: Alarm:tempurature
8 Digital Communications Interface 8.4.1.33 ALARm:TEMPurature<chn>:LOWer:ENABle? Returns the state of the lower temperature alarm enable for the specified channel. Example: ALAR:TEMP1:LOW:ENAB? Response: 0 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if the lower temperature alarm is enabled. A value of 0 is returned if the lower temperature alarm is disabled.:Lower:enable -
Page 101: Alarm:tempurature
8 Digital Communications Interface 8.4.1.37 ALARm:TEMPurature<chn>:RATE? Indicates whether a temperature rate alarm event has occurred. Example: ALAR:TEMP1:RATE? Response: 0 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if a temperature rate alarm event has occurred on the specified chan- nel.:Rate -
Page 102: Alarm:tempurature
8 Digital Communications Interface 8.4.1.41 ALARm:TEMPurature<chn>:RATE:LIMit <float>|MIN|MAX|DEF Sets the temperature rate alarm limit for the specified channel in degrees (C or F) per hour. Example: ALAR:TEMP1:RATE:LIM 10.00 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <float> pa- rameter specifies the value for the temperature rate alarm limit.:Rate:limit |Min|Max|Def -
Page 103: Alarm:tempurature
8 Digital Communications Interface 8.4.1.45 ALARm:TEMPurature<chn>:UPPer? Indicates whether an upper temperature alarm event has occurred. Example: ALAR:TEMP1:UPP? Response: 0 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if an upper temperature alarm event has occurred on the specified channel.:Upper -
Page 104: Alarm:tempurature
8 Digital Communications Interface 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 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).:Upper:limit |Min|Max|Def -
Page 105: Calculate
8 Digital Communications Interface Example: CALC1:DEWP? Response: 3.5 The CALCulate suffix, <chn>, specifies the channel (1 or 2). The value re- turned is always in the current temperature units (C or F). 8.4.2.3 CALCulate<chn>:HINDex? Returns the heat index calculation for the specified channel in degrees C or F. Example: CALC1:HIND? Response: 28.4 The CALCulate suffix, <chn>, specifies the channel (1 or 2).:Hindex -
Page 106: Calculate
8 Digital Communications Interface The CALCulate suffix, <chn>, specifies the channel (1 or 2). The PARamenter suffix, <num>, specifies 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 are in the current temperature unit, C of F.:Parameter :Rate -
Page 107: Calculate[
8 Digital Communications Interface 8.4.2.12 CALCulate[<chn>]:PARameter<num>:RESolution <num>|MIN|MAX|DEF Sets the display resolution. Example: CALC:PAR2:RES 2 The PARameter suffix, <num>, specifies either temperature resolution (1) or relative humidity resolution (2). The <num> parameter specifies the number of decimal places to use. Specifying the MIN, MAX, or DEF parameter sets the display resolution to the minimum, maximum, or default value respectively.]:Parameter :Resolution |Min|Max|Def -
Page 108: Format:tdst:state
8 Digital Communications Interface <MeasStatus>,<ChX>,<ChXTemp>,<TempUnits>,<ChXHumid>,%[,<ChY>,< ChYTemp>,<TempUnits>,<ChYHumid>,%],<year>,<month>,<day>,<hour>,< minute>,<second> The measure status (<MeasStatus>) is 0 if these measurement values have been read previously or 1 if these are new measurement values. If no channel num- ber was specified, the measurements on both channels are returned (X = 1; Y = 2). -
Page 109: Read? [
8 Digital Communications Interface Response: 1,1,25.629,C,29.29,%,2,0,C,0,%,2003,9,16,11,1,42 This command is equivalent to the FETC? command. 8.4.2.17 READ? [<chn>] Returns a comma delimited list of the most recent measurements for the speci- fied channel or for both channels. Example 1: READ? 1 Response: 25.576,29.30 Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38 Example 2: READ?] -
Page 110: Data:dstatistics:hour? [Min|Max|Def]
8 Digital Communications Interface 8.4.3.3 DATa:DSTatistics:HOUR? [MIN|MAX|DEF] Returns the daily statistics recording time. Example: DAT:DST:HOUR? Response: 12 Specifying the MIN, MAX, or DEF parameter returns the minimum, maxi- mum, or default value respectively. 8.4.3.4 DATa:DSTatistics:HOUR <num>|MIN|MAX|DEF Sets the state of the daily statistics recording time. Example: DAT:DST:HOUR 1 The <num>... -
Page 111: Data:dstatistics:rhour
8 Digital Communications Interface 8.4.3.8 DATa:DSTatistics:RHOur <num>|MIN|MAX|DEF Sets the daily statistics reset time. Example: DAT:DST:RHO 0 The <num> parameter specifies the hour for the daily statistics reset time. Specifying MIN, MAX, or DEF parameter sets the daily statistics reset time to the minimum, maximum, or default value respectively.|Min|Max|Def -
Page 112: Data:dstatistics:record:etime? [
8 Digital Communications Interface The <num> parameter specifies the daily statistics record number. If none is specified, record 1 is assumed. The response is returned in the format, <year>,<month>,<day>. 8.4.3.13 DATa:DSTatistics:RECord:ETIMe? [<num>] Returns the daily statistics recording end time. Example: DAT:DST:REC:ETIM? Response: 23,59,59 The <num>...] -
Page 113: Data:record:feed:rhumidity
8 Digital Communications Interface 8.4.3.17 DATa:RECord:FEED:RHUMidity<chn>? Returns the state of the humidity recording enable for the specified channel. Example: DAT:REC:FEED:RHUM1? Response: 1 The RHUMidity suffix <chn>, specifies the channel (1 or 2). A value of 1 is re- turned if the humidity recording for the specified channel is enabled. A value of 0 is returned if the humidity recording for the specified channel is disabled. -
Page 114: Data:record:open
8 Digital Communications Interface The response indicates the number of bytes remaining and the number of bytes used, separated by a comma. 8.4.3.22 DATa:RECord:OPEN? Returns the number of bytes of memory in the open set of data. Example: DAT:REC:OPEN? Response: 1203 This command must be preceeded by the DATa:REC:OPEN command (see Section 8.4.3.23) which is used to open a set of data using a date/time range. -
Page 115: Data:record:time? [Min|Max|Def]
8 Digital Communications Interface nary data (<binary data>). The number of bytes in the <binary data> portion of the response may be anywhere between 1 and <num> bytes (256 if <num> is not specified). Use the DATa:RECord:OPEN? command to determine the exact number of bytes in the open set of data. -
Page 116: Sensor:average
8 Digital Communications Interface Response: 1 A value of 1 is returned if the measurement averaging is enabled. A value of 0 is returned if the measurement averaging is disabled. 8.4.4.4 SENSor:AVERage <bool> Sets the measurement average setting. Example: SENS:AVER 1 The <bool>... -
Page 117: Sensor
8 Digital Communications Interface 8.4.4.8 SENSor<chn>:IDENtification <str> Sets the sensor identification for the specified channel. Example: SENS1:IDEN CHAMBER3 The SENSor suffix, <chn>, specifies the channel (1 or 2). The sensor identifi- cation field is set to the value indicated by <str>. The sensor identification can be up to 16 characters in length and consist of any combination of numbers, let- ters, underscores, and spaces.:Identification -
Page 118: Trigger:timer
8 Digital Communications Interface Specifying the MIN, MAX, or DEF parameter returns the minimum, maxi- mum, or default value respectively. 8.4.4.11 TRIGger:TIMer <num>|MIN|MAX|DEF Sets the measurement period setting in seconds. Example: TRIG:TIM 30 The <num> parameter can be one of the following values: 1, 2, 5, 10, 15, 30, 60, 120, 300, 600, 900, 1200, 1800 or 3600.|Min|Max|Def -
Page 119: Calibration Commands
8 Digital Communications Interface The <chn> parameter specifies the channel (1 or 2). A value of 1 is returned if the specified channel is off. A value of 0 is returned if the specified channel is 8.4.5.4 ROUTe:OPEN <chn> Switches off the specified channel. Example: ROUT:OPEN 1 The <chn>... -
Page 120: Calibrate
8 Digital Communications Interface 8.4.6.4 CALibrate<chn>:DATE:CALibrate (<year>,<month>,<day>) Sets the sensor calibration date for the specified channel. Example: CAL1:DATE:CAL 2003,9,17 The CALibrate suffix, <chn>, specifies the channel (1 or 2). The <year>, <month>, and <day> parameters must all be specified. The <year> parameter is a four-digit number.:Date:calibrate ( , , ) -
Page 121: Calibrate
8 Digital Communications Interface Response: -0.210 The CALibrate suffix, <chn>, specifies the channel (1 or 2). The OFFSet suf- fix, <num>, specifies either temperature (1) or humidity (2). 8.4.6.9 CALibrate<chn>:PARameter:OFFSet<num> <float> Sets the sensor calibration offset parameter for the specified channel. Example: CAL1:PAR:OFFS2 -0.025 The CALibrate suffix, <chn>, specifies the channel (1 or 2).:Parameter:offset -
Page 122: Opt
8 Digital Communications Interface 8.4.7.2 *OPT? Returns a list of sensor models currently connected to the inputs. Example: *OPT? Response: “2626-S”,"0" The model number of the sensor connected to input 1 is reported first. The model number of the sensor connected to input 2 is reported second. If no sen- sor is connected to an input, the model number is reported as “0". -
Page 123: System:code:version
8 Digital Communications Interface sage so the next message can be read. If more than ten errors occur before be- ing read, the tenth error in the queue is -350,"Queue overflow" and all but the first nine errors are discarded. All errors cause the Error Bit (ERR, bit 2) for the Status BYTE Register to be set (see Section 8.4.11.7). -
Page 124: System:communicate:ir:mode
8 Digital Communications Interface Response: 0 A value of 0 is returned if the IR mode is off (IR port is disabled). A value of 1 is returned if the IR mode is in communications mode (COMM). A value of 2 is returned if the IR port is in IRDA mode (IRDA). -
Page 125: System:communicate:serial:feed
8 Digital Communications Interface Example: SYST:COMM:SER:FDUP 1 The <bool> parameter turns serial port echo (duplex) mode on (1 or ON) or off (0 or OFF). A baud rade of 57600 suspends echo (full duplex). 8.4.8.7 SYSTem:COMMunicate:SERial:FEED? Returns the state of the serial port auto printing. Example: SYST:COMM:SER:FEED? Response: 0 A value of 1 is returned if serial port auto printing is enabled. -
Page 126: System:communicate:serial:time
8 Digital Communications Interface 8.4.8.12 SYSTem:COMMunicate:SERial:TIMe <num>|MIN|MAX|DEF Sets to serial port sample period setting in seconds. Example: SYST:COMM:SER:TIM 120 The <num> parameter can be one of the following values: 1, 2, 5, 10, 15, 30, 60, 120, 300, 600, 900, 1200, 1800, or 3600. If a value other than one listed here is used, the instrument automatically selects the nearest acceptable value that is less than the value entered.|Min|Max|Def -
Page 127: System:date
8 Digital Communications Interface 8.4.9.1 SYSTem:DATE? Returns the clock date. Example: SYST:DATE? Response: 2003,9,1 The response is returned in the format, <year>,<month>,<day>. 8.4.9.2 SYSTem:DATE (<year>,<month>,<day>) Sets the clock date to the specified year, month, and day. Example: SYST:DATE 2003,9,17 The <year>, <month>, and <day> parameters must all be supplied. The <year> parameter is a four-digit number. -
Page 128: System:decimal:format
8 Digital Communications Interface A value of 0 is returned if the decimal format is using a period (‘.’). A value of 1 is returned if the decimal format is using a comma (‘,’). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively.|Min|Max|Def -
Page 129: System:time:daylight
8 Digital Communications Interface A value of 0 is returned if the daylight saving adjustment is disabled. A value of 1 is returned if the daylight saving adjustment is set to North America (N AMER). A value of 2 is returned if the daylight saving adjustment is set to Eu- rope (EUROPE).|Min|Max|Def -
Page 130: System:password:alarm
8 Digital Communications Interface Response: 0 A value of 1 is returned if the alarm settings are password protected; otherwise a value of 0 is returned. 8.4.10.2 SYSTem:PASSword:ALARm <bool> Sets the state of the alarm settings password. Example: SYST:PASS:ALAR 1 The <bool>... -
Page 131: System:password:record
8 Digital Communications Interface Example: SYST:PASS:NEW 1212 The <pass> parameter must be a 4-digit number (0000 to 9999). Specifying the DEF parameter resets the password to the default password (1620). This com- mand is password protected. Note: If the password is forgotten, the themo-hygrometer must be returned to an Authorized Service Center to have the password restored. -
Page 132: System:password:statistics
8 Digital Communications Interface ROUT:CLOS, ROUT:OPEN, SENS:AVER, SENS:IDEN, SENS:LOCK,and TRIG:TIME. 8.4.10.11 SYSTem:PASSword:STATistics? Returns the state of the statistics settings password-protection. Example: SYST:PASS:STAT? Response: 0 A value of 1 is returned if the statistics settings password-protection is enabled, otherwise, a value of 0 is returned. 8.4.10.12 SYSTem:PASSword:STATistics <bool>... -
Page 133: Cls
8 Digital Communications Interface 8.4.11.1 *CLS Clears the status registers. Example: *CLS This clears the error queue, Event Status Register, Operation Status Register, Questionable Status Register, Alarm Status Register, and Measurement status Register. 8.4.11.2 *ESE? Returns the Event Status Enable Register. (See *ESE <num> command below.) Example: *ESE? Response: 189 8.4.11.3... -
Page 134: Sre
8 Digital Communications Interface Execution error (EXE). An invalid parameter for a command has been received or the command could not be executed under exist- ing conditions. Command error (CME). An unrecognized command or a command with improper syntax has been received. User request (URQ). -
Page 135: Tst? [
8 Digital Communications Interface tion of each of the eight bits of the register by adding the binary-weighted val- ues of each bit. The meaning of each bit, when set (1), is as follows where 0 is the least significant and 7 is the most significant: Bit 0 Measurement Status Bit.] - Page 136 8 Digital Communications Interface 0: sensors are attached and operating properly bit 0 is 1: channel 1 sensor is unattached, locked out, or not operating properly bit 1 is 1: channel 2 sensor is unattached, locked out, or not operating properly 2nd number: channel 1 sensor test 0: no error...
-
Page 137: Status:alarm
8 Digital Communications Interface 0: operating properly bit 0 is 1: no data card is inserted bit 1 is 1: an invalid or improperly formatted data card is inserted bit 4 is 1: controller read error bit 5 is 1: controller write error bit 6 is 1: invalid controller 9th number: battery monitor test 0: no error... -
Page 138: Status:alarm:condition
8 Digital Communications Interface Bit 7 Not used. Example: STAT:ALAR? Response: 32 8.4.11.10 STATus:ALARm:CONDition? This command reads the Alarm Status Condition Register. Reading this register does not affect it. 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), is as follows where 0 is the least significant and 7 is the most significant: no alarm... -
Page 139: Status:measure
8 Digital Communications Interface nary-weighted values of each mask bit. The Alarm Status Event Register is de- scribed in Section 8.4.11.9, STATus:ALARm?. The following example causes the Alarm Status Bit in the Status Byte Register to be set when a power failure alarm has been triggered. -
Page 140: Status:measure:enable
8 Digital Communications Interface Bit 6 Not used. Bit 7 Not used. Example: STAT:MEAS:COND? Response: 15 8.4.11.15 STATus:MEASure:ENABle? This command returns the Measurement Status Enable Register (see STA- Tus:MEASure:ENABle <num> command below). Example: STAT:MEAS:ENAB? Response: 15 8.4.11.16 STATus:MEASure:ENABle <num>|MIN|MAX|DEF This command sets the Measure Status Enable Register. This register deter- mines which event bits of the Measure Status Event Register affect the Measure Status Bit of the Status Byte Register. -
Page 141: Status:operation:condition
8 Digital Communications Interface Bit 4 Measurement Complete bit. Bit 5 Not used. Bit 6 Not used. Bit 7 Not used. Example: STAT:OPER? Response: 16 8.4.11.18 STATus:OPERation:CONDition? This command reads the Operation Status Condition Register. Reading this reg- ister does not affect it. The value returned indicates the condition of each of the eight bits of the register by adding the binary-weighted values of each bit. -
Page 142: Status:questionable
8 Digital Communications Interface tion Status Bit of the Status Byte Register. If any bit in the Operation Status Event Register is set (1) while its corresponding mask bit in the Operation Sta- tus Enable Register is set, the Operation Status Bit in the Status Byte Register will be set. -
Page 143: Status:questionable:enable
8 Digital Communications Interface Bit 0 Not used. Bit 1 Not used. Bit 2 Not used. Bit 3 Not used. Bit 4 Measurement invalid bit. Bit 5 Not used. Bit 6 Not used. Bit 7 Not used. Example: STAT:QUES:COND? Response: 16 8.4.11.23 STATus:QUEStionable:ENABle? This command returns the Questionable Status Enable Register (see STA-... -
Page 144: Date And Time Formats
8 Digital Communications Interface 8.4.13 Date and Time Formats The following tables list the acceptable date and time formats and their number setting. Date Formats Number Format MM-DD-YY MM-DD-YYYY DD/MM/YY DD/MM/YYYY Time Formats Number Format H:MM:SSAM/PM (12-hour format) HH:MM:SS (24-hour format) 1620 the “DewK”... -
Page 145: Calibration Procedure
9 Calibration Procedure Calibration Procedure 2626-x sensors used with the thermo-hygrometer should be periodically cali- brated to ensure accuracy. A six-month calibration interval for the first year, and one-year thereafter, is recommended. The thermo-hygrometer display unit does not require calibration, and the sensor can be sent to a qualified service center for calibration without the thermo-hygrometer display unit. -
Page 146: Temperature And Humidity Measurement Errors
9 Calibration Procedure 2626-S Temperature Calibration Points Temperature at Relative Humidity 15°C 25°C 35°C 2626-S Relative Humidity Calibration Points Relative Humidity at Temperature 25°C 25°C 25°C 2626-H Temperature Calibration Points Temperature at Relative Humidity 16°C 20°C 24°C 2626-H Relative Humidity Calibration Points Relative Humidity at Temperature 20°C... -
Page 147: Temperature And Humidity Adjustments
9 Calibration Procedure Allow four hours for settling after the temperature and humidity set-points are reached before collecting data. Measure the temperature with the 2626 probe and compare it with the temperature read from the reference thermometer in the chamber to ob- tain the temperature measurement error: −... - Page 148 9 Calibration Procedure ′+ ′ Terror T Terror T ′ = Tmedian ∆TOS = − ′ Tmedian ′ = + ∆ Calculate the adjustment ∆HSL to the humidity slope parameter HSL, and the new humidity slope parameter: − RHerror RH RHerror RH ∆HSL = −...
-
Page 149: Maintenance
10 Maintenance Maintenance • The calibration instrument has been designed ease of operation and sim- plicity of maintenance as the central theme in the product development. Therefore, with proper care the instrument should require very little main- tenance. Avoid operating the instrument in oily, wet, dirty, or dusty environments. -
Page 150: Troubleshooting
11 Troubleshooting Troubleshooting In case you run into difficulty while operating the thermo-hygrometer, this sec- tion provides some suggestions that may help you solve the problem. Below are several situations that may arise followed by possible causes and suggested ac- tions you might take. -
Page 151: Self-Test Error Messages
11 Troubleshooting The display will remain inoperable during a power outage to preserve battery life. Measurements will continue to be recorded as long as the battery has a charge. On power up the thermo-hygrometer performs a series of self-tests to check the operation of all its components and each of the sensors. -
Page 152: Start-Up Error Messages
11 Troubleshooting 11.1.6 Start-up Error Messages Error messages may appear after the self-test. If this happens, contact a Hart Scientific Authorized Service Center for assistance. 11.1.7 Error Messages during Normal Operation If an error (e.g. math error) occurs during normal operation, the DewK auto- matically goes into a safe state, switching off the offending sensor. -
Page 153: Placement Of Ir Dongle For Transfer Of Data
11 Troubleshooting Set up the terminal program to use the correct COM port and baud rate. Configure the communication settings to use 8 data bits, 1 stop bit, no parity and no flow control. If you want to save the downloaded data to a file, configure your terminal program to capture the incoming text and save it to a text file. -
Page 154: Immunity Testing
11 Troubleshooting As noted in the IEC 61326-1, the instrument can have varying configurations. The instrument was tested in a typical configuration with shielded, grounded probe and RS-232 cables. Emissions may, in non-typical applications, exceed the levels required by the standard. It is not practical to test all configurations, as the manufacturer has no control over the probes the user may connect to the instrument. - Page 155 11 Troubleshooting A. Yes. The sensor's calibration information is stored in the sensor itself. When you change out the sensor, this information is automatically downloaded to the 1620. There is no need to reprogram probe coefficients into the 1620. See 6.12 Sensors. Q.
- Page 156 Index Index daylight saving 67 decimal 35 AC adapter 2, 17, 21 delta 38 accessories 13, 19 dew point 38 accuracy 9, 24, 145 display 23, 34 air velocity 24 display layout 36 alarm 60 alarm screen 23 average 29, 38, 51, 53 environmental conditions 10 error message 69, 145 extension cable 22...
- Page 157 Index maintenance 143 safety information 2 measurement period 29 self-heating 24 measuring 23, 29 self-test 22, 145 menu functions 27 - 73 sensor 14, 16, 19, 22 - 24, 62 sensor accuracy 24 sensor calibration 32, 139 sensor identification 31, 38 operation 21 sensor lock 31 serial number 38...
- Page 158 Index warranty 10 zones, display 36...