Related Manuals for Fluke 1620A-H
Summary of Contents for Fluke 1620A-H
- Page 1 Hart Scientific Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com 1620A “DewK” Thermo-Hygrometer User’s Guide Rev. 650401...
- Page 2 Limited Warranty & Limitation of Liability Each product from Fluke Corporation, Hart Scientific Division ("Hart") is warranted to be free from de- fects in material and workmanship under normal use and service. The warranty period is one year for the Thermo-Hygrometer.
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Page 3: Table Of Contents
Table of Contents 1 Before You Start ......1 Symbols Used ......1 Safety Information . - Page 4 Battery ....... . 19 Sensor Configuration ......20 Power Switch .
- Page 5 7.5.3 Comm Setting ........59 7.5.3.1 Serial ......... . 60 7.5.3.2 RF (optional) .
- Page 6 8.2.1.46 ALARm:TEMPurature<chn>:SENSor? ......89 8.2.1.47 ALARm:TEMPurature<chn>:SENSor:ENABle? ....90 8.2.1.48 ALARm:TEMPurature<chn>:SENSor:ENABle <bool>.
- Page 7 8.2.4.8 SENSor<chn>:IDENtification <str> ......103 8.2.4.9 SENSor<chn>:STATe? ....... . 104 8.2.4.10 TRIGger:TIMer? [MIN|MAX|DEF] .
- Page 8 8.2.8.32 SYSTem:COMMunicate:SOCKet:GATeway <addr>....114 8.2.8.33 SYSTem:COMMunicate:SOCKet:HTML? ..... . 114 8.2.8.34 SYSTem:COMMunicate:SOCKet:MAC?.
- Page 9 9 Calibration Procedure ..... 133 Equipment ......133 Preparation .
- Page 10 Figures Figure 1 Front Panel ....... . 13 Figure 2 Top Panel .
- Page 11 Figure 41 Date Time ....... . 58 Figure 42 Comm Setting ......60 Figure 43 Serial .
- Page 12 Tables Table 1 International Electrical Symbols ..... 1 Table 2 Statistics Zone Field Types......34 Table 3 Approximate Data Storage Capacity .
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Page 13: Before You Start
1 Before You Start Symbols Used 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... -
Page 14: Safety Information
1620A “DewK” Thermo-hygrometer User’s Guide Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re- fers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation. -
Page 15: Cautions
• Keep the sensors clean and away from fluids and dust. Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product: Fluke Corporation, Hart Scientific Division 799 E. Utah Valley Drive American Fork, UT 84003-9775 Phone: +1.801.763.1600... - Page 16 22 Jianguomenwai Dajie Chao Yang District Beijing 100004, PRC CHINA Phone: +86-10-6-512-3436 Telefax: +86-10-6-512-3437 E-mail: xingye.han@fluke.com.cn Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace #03-16 The Comtech (Lobby D) 118502 SINGAPORE Phone: +65 6799-5588 Telefax: +65 6799-5588 E-mail: antng@singa.fluke.com...
- Page 17 1 Before You Start Authorized Service Centers • Model Number • Serial Number • Voltage • Complete description of the problem...
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Page 19: Introduction
2 Introduction Introduction Fluke’s Hart Scientific Division’s 1620A is a low-cost, high-accuracy, digital thermo-hygrometer. Its unique combination of features makes it suitable for a wide variety of applications from laboratory to industrial ambient measure- ment. Features of the thermo-hygrometer include: •... -
Page 21: Specifications And Environmental Conditions
3 Specifications and Environmental Conditions Specifications Specifications and Environmental Conditions Specifications Temperature Range 0°C to 50°C Temperature Accuracy 16°C to 24°C (60.8°F to 75.2°F): ±0.125°C (±0.225°F) [calibrated] (“H” Model) 0°C to 16°C (32°F to 60.8°F): ±0.5°C (±0.9°F) [uncalibrated typical] 24°C to 50°C (75.2°F to 122°F): ±0.5°C (±0.9°F) [uncalibrated typical] Temperature Accuracy 15°C to 35°C (59°F to 95°F): ±0.25°C (±0.45°F) [calibrated] (“S”... -
Page 22: Environmental Conditions
1620A “DewK” Thermo-hygrometer User’s Guide Size (DewK)HxWxD 125 x 211 x 51 mm (4.9 x 8.3 x 2.0 in) Size (Probes) 79 mm H x 19 mm dia. (3.1 x 0.75 in) Weight 0.7 kg (1.5 lb.) Environmental Conditions Although the instrument has been designed for optimum durability and trou- ble-free operation, it must be handled with care. -
Page 23: Quick Start
4 Quick Start Unpacking 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 24: Connect The Sensor
1620A “DewK” Thermo-hygrometer User’s Guide hours, typically. However, without external power, the display will be inoperable. Connect the Sensor The sensor for channel 1 connects to the socket at the top-right, and the sensor for channel 2, if used, connects to the socket on the right side. Either sensor may be used with an optional extension cable up to 100 feet (30 meters) in length. -
Page 25: Parts And Controls
5 Parts and Controls Front Panel 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 26: Top Panel
1620A “DewK” Thermo-hygrometer User’s Guide 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 27: Left Side Panel
5 Parts and Controls Left Side Panel 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, from top to bottom, the RS-232 port, Ethernet LAN port, alarm port, and DC power socket. -
Page 28: Back Panel
1620A “DewK” Thermo-hygrometer User’s Guide bottom LED indicates link state: off for no connection, amber for 10 Mbps, and green for 100 Mbps. The top LED indicates link activity: off for no activity, amber for half duplex, and green for full duplex. Alarm Port - The alarm port allows external alarm indicators to be connected to the instrument and activated when an alarm event occurs (see Section 7.4.1). -
Page 29: Quick Buttons
- These buttons are used to adjust the display contrast, u for darker and d for lighter. Configurations • Model 1620A-H includes a 1620A-H Thermo-Hygrometer readout, a high accuracy sensor (Model 2626-H), a thermo-hygrometer readout wall mount bracket, power supply (Model 2361), and an RS-232 cable. -
Page 30: Accessories
1620A “DewK” Thermo-hygrometer User’s Guide Accessories The following accessories are available to compliment either the high accuracy or standard thermo-hygrometer readout. • 2626-S Spare Sensor/Standard Accuracy • 2627-S Spare Sensor Kit includes a standard accuracy probe (2626-S), sensor case (2607), sensor wall mount bracket (2630), and 25-foot (7.6 m) extension cable (2628) •... -
Page 31: General Operation
6 General Operation DC Power Source 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-hy- grometer remotely. -
Page 32: Sensor Configuration
1620A “DewK” Thermo-hygrometer User’s Guide Turn the thermo-hygrometer over to access the rear battery compartment. Press down slightly on the battery cover and slide it out to remove it. 3. Remove the old battery if one is in place by lifting it up at the bottom and pulling it out. -
Page 33: Display
6 General Operation Display 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 34: Sensor Accuracy
1620A “DewK” Thermo-hygrometer User’s Guide 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. - Page 35 6 General Operation Sensors ties. Thus, it is recommended that the sensor be located where there is minimal air currents. The self-heating of the sensor could also be altered by nearby objects that insu- late the sensor from the air. Keep adequate air space around the sensor. The self-heating of the sensor takes a few minutes to stabilize after the power to the thermo-hygrometer is switched on or the sensor is attached.
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Page 37: 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) Figure 6 Main Menu... -
Page 38: Channel Menu
1620A “DewK” Thermo-hygrometer User’s Guide 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 39: Sensor Id
7 Menu Functions Channel Menu and humidity values displayed are averaged over the measurement period. When average is off, the displayed values are instantaneous measurements. RATE T, rate time, determines the time interval over which the measurements are used to calculate the rate of change, and is selectable between 30 seconds, 1, 2, 5, 10, 15, 20, 30, 45 minutes, or 1 hour. -
Page 40: Sensor Lock
1620A “DewK” Thermo-hygrometer User’s Guide cannot be edited. The sensor ID cannot be set for a channel without a sensor at- tached. The sensor ID is stored in the sensor, not in the thermo-hygrometer. Figure 9 Sensor ID Use the lr and ENTER buttons to select the sensor identification to change. The lr buttons are used to move among character positions and the buttons are used to change the character. -
Page 41: Sensor Cal
7 Menu Functions Channel Menu 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 42: Figure 11 Sensor Cal
1620A “DewK” Thermo-hygrometer User’s Guide 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 The lr buttons are used to edit the parameter value. The ud buttons are used to move between parameters. -
Page 43: Display Menu
7 Menu Functions Display Menu rameters have been edited. The message ‘STORE VALUES’ is displayed. 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. Display Menu The DISPLAY menu provides functions for configuring the display. -
Page 44: Display Layout
1620A “DewK” Thermo-hygrometer User’s Guide darkens the screen. The contrast may also be adjusted from the main screen by using the ud buttons (see Section 5.1, Front Panel). Figure 14 Display Setting The lr buttons are used to select the parameter setting. The ud buttons are used to scroll between each parameter. -
Page 45: Figure 15 Display Layout
7 Menu Functions Display Menu The enabled layouts can be viewed by pressing the lr buttons when the main screen is displayed. Figure 15 Display Layout Except for blank and time types, zones require that a sensor number be se- lected. -
Page 46: Field Data
1620A “DewK” Thermo-hygrometer User’s Guide and to the right of tick marks. Tick marks with labels are drawn with short con- tinuous lines, and tick marks without labels are drawn 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. - Page 47 7 Menu Functions Display Menu Field Type Description 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 statistical mean H STD relative humidity standard deviation H MIN minimum relative humidity H MAX...
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Page 48: Graph Scale
1620A “DewK” Thermo-hygrometer User’s Guide Figure 16 Field Data Use the lr buttons to change each of the settings. Press Enter to save and continue to the next parameter. Press the Exit button to cancel any changes and exit to the menu. 7.2.4 Graph Scale The GRAPH SCALE function allows the selection of the graph settings for... -
Page 49: Figure 17 Graph Scale
7 Menu Functions Display Menu DIVS from 1, 2, 4, 6, 8, 10 Figure 18 Graph Scale , Select Zone Figure 17 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. -
Page 50: Display Reset
1620A “DewK” Thermo-hygrometer User’s Guide 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 Data Menu The functions that appear in this menu are DATA RECORD and DAILY STATS. 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
1620A “DewK” Thermo-hygrometer User’s Guide 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: Figure 22 Record Setting
7 Menu Functions Data Menu Caution: When the memory has been 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 channels. Refer to Table 3, Approximate Data Storage Capacity. -
Page 54: Data View
1620A “DewK” Thermo-hygrometer User’s Guide 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 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. -
Page 55: Data Print
7 Menu Functions Data Menu 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). 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. -
Page 56: Data Storage
1620A “DewK” Thermo-hygrometer User’s Guide 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. Figure 25 Data Print The lr buttons are used to change the parameters. Press the Enter button to save the new setting. -
Page 57: Data Clear
7 Menu Functions Data Menu space used in the record block index. The BEGIN parameter is the date of the earliest data. The END parameter is the date of the latest data. Figure 27 Data Storage Press the Enter or Exit button to exit. 7.3.1.5 Data Clear The DATA CLEAR function clears the data collected. -
Page 58: Daily Stats
1620A “DewK” Thermo-hygrometer User’s Guide Press the Enter button to clear the data. Press the Exit button to cancel any changes and exit to the menu. Caution: Using this function will erase all recorded data and make it irre- trievable. 7.3.2 Daily Stats The DAILY STATS menu can be used to record measurement statistics, such as... -
Page 59: Stats Setting
7 Menu Functions Data Menu 7.3.2.1 Stats Setting The STATS SETTING function sets the daily statistics recording options. The AUT REC enables (ON) or disables (OFF) automatic recording of the statistics. The REC TIM may be set from 00:00 to 23:00. The REC TIM function sets the hour just prior to which the statistics are automatically recorded when AUT REC is ON. -
Page 60: Stats View
1620A “DewK” Thermo-hygrometer User’s Guide 7.3.2.2 Stats View The STATS VIEW function is used to view daily statistics. Select a date and measurement channel and type. The average, standard deviation, minimum, maximum, spread, number, maximum rate, and alarm are displayed for the channel and measurement type. -
Page 61: Stats Print
7 Menu Functions Data Menu 7.3.2.3 Stats Print The STATS PRINT function allows daily statistics to be printed over the serial port. Figure 31 Stats Print Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. -
Page 62: Stats Clear
1620A “DewK” Thermo-hygrometer User’s Guide eration. If the Enter button is pressed the stats are reset. If the Exit button is pressed the operation is canceled. Figure 33 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- firmation of the operation. -
Page 63: Alarm Menu
7 Menu Functions Alarm Menu Alarm Menu The ALARM menu allows alarm event and indicator settings to be set and al- lows viewing of alarm events. The functions that appear in this menu are ALARM SETTING, SENSOR ALARM, SYSTEM ALARM, and ALARM VIEW. -
Page 64: Sensor Alarm
1620A “DewK” Thermo-hygrometer User’s Guide When the PORT setting is ON, the alarm port outputs an electrical signal to in- dicate that an alarm event has occurred. Under normal conditions the output will be 0V. When an alarm event occurs, and PORT is ON, the output will be driven at approximately 12V DC. -
Page 65: System Alarm
7 Menu Functions Alarm Menu To set alarm parameters, a channel number and measurement type (T or H) must first be selected using lr and ENTER buttons. Figure 36 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 66: Alarm View
1620A “DewK” Thermo-hygrometer User’s Guide When the BATTERY alarm is turned ON, an alarm occurs when the battery charge is low. When the POWER alarm is ON, an alarm occurs when power is disconnected, drops out, or is switched off. The beep indicator, if also enabled, will sound ev- ery 20 seconds when the instrument is operating from internal battery power, until external power is restored or the battery is drained. -
Page 67: System Menu
7 Menu Functions System Menu and latest alarm events are shown below the list of alarm events (space permit- ting). Figure 38 Alarm View Press the Enter button to clear the alarms. Press the Exit button to retain any alarms and exit to the menu. System Menu The SYSTEM menu provides access to the general settings for the system such as temperature unit, date and time, the communication port settings, password... -
Page 68: System Setting
1620A “DewK” Thermo-hygrometer User’s Guide menu are SYSTEM SETTING, DATE TIME, COMM SETTING, PASS- WORD, and SYSTEM INFO. Figure 39 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 69: Date Time
7 Menu Functions System Menu When the measurement unit is changed and the Enter button is selected, the next measurement is displayed in the new measurement unit. Figure 40 System Setting The lr buttons are used to change the setting parameters. Press the Enter button to save the new setting. -
Page 70: Figure 41 Date Time
1620A “DewK” Thermo-hygrometer User’s Guide When this function is selected available parameters are HOUR, MINUTE, SECOND, T FORM, DAY, MONTH, YEAR, D FORM, and DAYL S. Figure 41 Date Time The HOUR parameter allows the user to set the time-of-day clock hour (0 through 23). -
Page 71: Comm Setting
7 Menu Functions System Menu One possible effect is with recorded daily stats. If the record time is reached twice within one day due to a time shift backwards, daily stats will be recorded twice for the same date. This can happen if the daily stats record time is set to 00:00, the daylight saving mode is set to Europe, and a fall backwards time shift occurs. -
Page 72: Serial
1620A “DewK” Thermo-hygrometer User’s Guide used for communicating with a computer, printer, or other equipment. The Thermo-Hygrometer includes a serial (RS-232) port, 802.15.4 (ZigBee) wire- less (optional), and Ethernet LAN port. To edit the settings for a specific port it must first be selected. -
Page 73: Figure 43 Serial
7 Menu Functions System Menu computer attached through a serial RS-232 cable. (See Section 8 for more in- formation and for a list of commands.) Figure 43 Serial The BAUD parameter allows the user to select the baud rate for communica- tions on this port. -
Page 74: Rf (Optional)
1620A “DewK” Thermo-hygrometer User’s Guide 7.5.3.2 RF (optional) The RF wireless interface allows the instrument to receive and respond to com- mands from a remote computer through a radio-frequency wireless link. (See Section 8 for a list of commands.) The computer must be attached to an RS-232 or USB RF modem. -
Page 75: Lan
7 Menu Functions System Menu CHANNEL selects the frequency channel on which the RF transceiver oper- ates. For two devices to communicate, they must use the same channel. Make sure the CHANNEL setting is set to the same number as the modem with which this instrument will be communicating. -
Page 76: Figure 45 Lan Settings
1620A “DewK” Thermo-hygrometer User’s Guide instrument can also serve a simple HTML or web page that allows readings to be observed with a web browser. Figure 45 Lan Settings Selecting LAN for the PORT option in the COMM SETTING menu function presents a window containing the LAN device settings, which include EN- ABLE, DHCP, ADDRESS, GATEWAY, MASK, COMMAND, and PAGE. -
Page 77: Password
7 Menu Functions System Menu even with th password. When using Hart Scientific’s LogWare III Software, COMMAND must be ON for full functionality. With applications where extra security is important and settings need not be changed, COMMAND should be OFF. PAGE, when ON, allows the instrument to serve an HTML web page. -
Page 78: Figure 46 Password
1620A “DewK” Thermo-hygrometer User’s Guide the ENTER button to accept the password or press the EXIT button to cancel any changes and exit to the menu. Figure 46 Password By default the password is set to “1620” when the instrument ships from the factory. -
Page 79: System Info
7 Menu Functions System Menu The COMM parameter allows the user to turn the password protection of the communications settings ON or OFF Press the lr buttons to highlight the digit to change. Use the buttons to scroll through the numbers 0-9. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and to move to the next parameter or exit to the menu. -
Page 81: Digital Communications Interface
8 Digital Communications Interface Overview Digital Communications Interface Overview The communication features allow an external device, such as a computer, to communicate with the Thermo-Hygrometer readout to receive measurement data and control operating settings. Communication is accomplished by issuing commands to the Thermo-Hygrometer through an RS-232, RF wireless (op- tional), or Ethernet LAN interface. -
Page 82: Rf Wireless (Optional)
1620A “DewK” Thermo-hygrometer User’s Guide 8.1.2 RF Wireless (optional) The RF wireless interface allows the instrument to receive and respond to com- mands from a remote computer through a radio-frequency wireless link. The computer must be attached to an RS-232 or USB RF modem. See Section 5.8, Accessories, for more information. -
Page 83: Commands
8 Digital Communications Interface Commands have alternate forms. Most 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 of inde- pendent function blocks such as input channel data paths. -
Page 84: Figure 34 Alarm
1620A “DewK” Thermo-hygrometer User’s Guide Table 4 Alphabetical List Commands Command Description Refer To *CLS Clear the status registers Section 8.2.11.1 *ESE? Returns the Standard Event Status Enable register Section 8.2.11.2 *ESE <num>|MIN|MAX|DEF Sets the Standard Event Status Enable register Section 8.2.11.3 *ESR? Returns the Standard Event Status register... -
Page 85: Table 4 Alphabetical List Commands Continued
8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To ALARm:RHUMidity<chn>:RATE:LIMit Sets the humidity rate alarm limit for the specified channel Section 8.2.1.27 <num>|MIN|MAX|DEF ALARm:RHUMidity<chn>:SENSor? Returns the state of the humidity sensor alarm for the specified Section 8.2.1.28 channel ALARm:RHUMidity<chn>:SENSor:ENABle? Returns the state of the humidity sensor alarm enable for the... -
Page 86: Table 4 Alphabetical List Commands Continued
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command Description Refer To ALARm:TEMPerature<chn>:UPPer:ENABle <bool> Enables or disables the high temperature alarm for the specified Section 8.2.1.51 channel ALARm:TEMPerature<chn>:UPPer:LIMit? Returns the high temperture alarm limit for the specified channel Section 8.2.1.52 ALARm:TEMPerature<chn>:UPPer:LIMit Sets the high temperture alarm limit for the specified channel Section 8.2.1.53... -
Page 87: Table 4 Alphabetical List Commands Continued
8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To CALCulate<chn>:PARameter<num>:RESolution Sets the display resolution) Section 8.2.2.12 <num>|MIN|MAX|DEF DATa:DSTat:ENABle? Returns the state of the daily stats recording enable Section 8.2.3.1 DATa:DSTat:ENABle <bool> Enables or disables the daily stats recording enable Section 8.2.3.2 DATa:DSTat:HOUR? Returns the daily stats recording time... -
Page 88: Table 4 Alphabetical List Commands Continued
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command Description Refer To INITiate:CONTinous? Returns the continuous state (always 1) Section 8.2.4.2 MEASure? [<chn>] Returns the temperature and humidity measurements for the Section 8.2.2.16 specified channel READ? [<chn>] Returns the temperature and humidity measurements for the Section 8.2.2.17 specified channel ROUTe:CLOSe? [<chn>]... -
Page 89: Table 4 Alphabetical List Commands Continued
8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To SYSTem:COMM:RADio:MODem <num> Sets the RF transceiver modem address Section 8.2.8.8 SYSTem:COMM:RADio:OPTion? Returns RF wireless installation status Section 8.2.8.9 SYSTem:COMM:RADio:PAN? Returns the RF transceiver PAN ID address Section 8.2.8.10 SYSTem:COMM:RADio:PAN <num>... -
Page 90: Table 4 Alphabetical List Commands Continued
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command Description Refer To SYSTem:PASSword:ALARm <bool> Enables or disables the alarm settings password protection Section 8.2.10.2 SYSTem:PASSword:CDISable Disables password-protected commands Section 8.2.10.3 SYSTem:PASSword:CENable <num> Enables password-protected commands Section 8.2.10.4 SYSTem:PASSword:CENable:STATe? Returns the current password-protected state Section 8.2.10.5 SYSTem:PASSword:COMM? Returns the state of the communication settings password... - Page 91 8 Digital Communications Interface Commands 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 condition of the instrument. Each section provides the command structure (long and short format), a de- scription of the command purpose, a command example, an example of what the command returns (as applicable to query commands), and notes specific to the command.
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Page 92: Alarm Commands
1620A “DewK” Thermo-hygrometer User’s Guide • Unrecognized commands or commands with incorrect syntax or invalid parameters generate error messages that are placed in the error queue (see Section 8.2.7.6, SYST:ERR?). 8.2.1 Alarm Commands 8.2.1.1 ALARm:BATTery? Indicates whether a battery alarm event has occurred. Example: ALAR:BATT? Response: 1 A value of 1 is returned if a battery alarm event has occurred. -
Page 93: Alarm:clear
8 Digital Communications Interface Commands The <bool> parameter turns the alarm beep enable on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Pass- word Commands). 8.2.1.6 ALARm:CLEar Clears the alarm events. Example: ALAR:CLE The alarm clear command clears the alarm events. -
Page 94: Alarm:port
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.11 ALARm:PORT? Returns the alarm port state. Example: ALAR:PORT:ENAB? Response: 0 A value of 1 is returned if the alarm port is active (12V), 0 otherwise (0V). 8.2.1.12 ALARm:PORT <bool> Sets the alarm port state. Example: ALAR:PORT:ENAB 1 The <bool>... -
Page 95: Alarm:power:enable
8 Digital Communications Interface Commands 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. 8.2.1.17 ALARm:POWer:ENABle <bool> Sets the state of the power loss alarm enable. Example: ALAR:POW:ENAB 1 The <bool>... -
Page 96: Alarm:rhumidity
1620A “DewK” Thermo-hygrometer User’s Guide Example: ALAR:RHUM1:LOW:LIM? Response: 20.00 The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.22 ALARm:RHUMidity<chn>:LOWer:LIMit <float>|MIN|MAX|DEF Sets the lower humidity alarm limit for the specified channel in %RH. Example: ALAR:RHUM1:LOW:LIM 25.00 The RHUMidity suffix, <chn>, specifies the channel (1 or 2).:Lower:limit |Min|Max|Def -
Page 97: Alarm:rhumidity
8 Digital Communications Interface Commands This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.26 ALARm:RHUMidity<chn>:RATE:LIMit? [MIN|MAX|DEF] Returns the humidity rate alarm limit for the specified channel in %RH per hour. Example: ALAR:RHUM1:RATE:LIM? Response: 5 The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively.:Rate:limit? [Min|Max|Def] -
Page 98: Alarm:rhumidity
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.30 ALARm:RHUMidity<chn>:SENSor:ENABle <bool> Sets the state of the humidity sensor alarm for the specified channel. Example: ALAR:RHUM1:SENS:ENAB 1 The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> pa- rameter turns the humidity sensor alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands).:Sensor:enable -
Page 99: Alarm:rhumidity
8 Digital Communications Interface Commands The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.35 ALARm:RHUMidity<chn>:UPPer:LIMit <float>|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).:Upper:limit |Min|Max|Def -
Page 100: Alarm:tempurature
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.39 ALARm:TEMPurature<chn>:LOWer:LIMit? [MIN|MAX|DEF] Returns 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 is always in the current temperature units (C or F).:Lower:limit? [Min|Max|Def] -
Page 101: Alarm:tempurature
8 Digital Communications Interface Commands 8.2.1.43 ALARm:TEMPurature<chn>:RATE:ENABle <bool> Sets the state of the temperature rate alarm enable for the specified channel. Example: ALAR:TEMP1:RATE:ENAB 1 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> pa- rameter turns the temperature rate alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands).:Rate:enable -
Page 102: Alarm:tempurature
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.47 ALARm:TEMPurature<chn>:SENSor:ENABle? Returns the state of the temperature sensor alarm enable for the specified channel. Example: ALAR:TEMP1:SENS:ENAB? Response: 0 The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if the temperature sensor alarm is enabled. A value of 0 is returned if the temperature sensor alarm is disabled.:Sensor:enable -
Page 103: Alarm:tempurature
8 Digital Communications Interface Commands The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> pa- rameter turns the upper temperature alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands).:Upper:limit? [Min|Max|Def] -
Page 104: Measurement Commands
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.2 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. 8.2.2.1 CALCulate:AVERage:CLEar Resets all running statistics for both channels. Example: CALC1:AVER:CLE This command may be password protected (see Section 8.2.10, Password Commands). -
Page 105: Calculate[
8 Digital Communications Interface Commands 8.2.2.6 CALCulate[<chn>]:PARameter[<num>]:AVERage[<type>]:DATA? Returns the specified statistical calculation for the specified channel. This is the same as the CALCulate,chn.:PARameter<num>:AVERage<type>? command (see 8.2.2.4). 8.2.2.7 CALCulate[<chn>]:PARameter<num>:AVERage<type>:TYPE? Returns the name of the specified statistical type for the specified channel. Example: CALC1:PAR1:AVER4:TYPE? Response: “T MAX”...]:Parameter[ ]:Average[ ]:Data -
Page 106: Calculate[
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.2.11 CALCulate[<chn>]:PARameter<num>:RESolution? [MIN|MAX|DEF] Returns the display resolution. Example: CALC:PAR1:RES? Response: 3 The PARameter suffix, <num>, specifies either temperature resoution (1) or relative humidity resolution (2). The value returned indicates the number of decimal places. Specifying the MIN, MAX, or DEF parameter returns the mini- mum, maximum, or default value respectively.]:Parameter :Resolution? [Min|Max|Def] -
Page 107: Format:tdst:state
8 Digital Communications Interface Commands If the extended format setting is OFF (see Section 8.2.2.15, FOR- Mat:TDST:STAT), the measurement values are returned in a comma-delimited format as follows: <Ch1Temp>,<Ch1Humid>[,<Ch2Temp>,<Ch2Humid>] The temperature values are always in the current temperature units. The humid- ity values are always in %RH. -
Page 108: Read? [
1620A “DewK” Thermo-hygrometer User’s Guide Response: 25.576,29.30 Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38 Example 2: MEAS? Response: 25.582,29.32,26.341,37.96 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. 8.2.2.17 READ? [<chn>] Returns a comma delimited list of the most recent measurements for the speci- fied channel or for both channels.] -
Page 109: Data:dstatistics:hour? [Min|Max|Def]
8 Digital Communications Interface Commands Example: DAT:DST:ENAB 1 The <bool> parameter turns the daily statistics recording on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Pass- word Commands). 8.2.3.3 DATa:DSTatistics:HOUR? [MIN|MAX|DEF] Returns the daily statistics recording time. -
Page 110: Data:dstatistics:rhour
1620A “DewK” Thermo-hygrometer User’s Guide Specifying the MIN, MAX, or DEF parameter returns the minimum, maxi- mum, or default value respectively. 8.2.3.8 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 111: Data:dstatistics:record:etime? [
8 Digital Communications Interface Commands 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>. 8.2.3.13 DATa:DSTatistics:RECord:ETIMe? [<num>] Returns the daily statistics recording end time. Example: DAT:DST:REC:ETIM? Response: 23,59,59 The <num>...] -
Page 112: Data:record:feed:rhumidity
1620A “DewK” Thermo-hygrometer User’s Guide 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. 8.2.3.18 DATa:RECord:FEED:RHUMidity<chn>... -
Page 113: Data:record:open
8 Digital Communications Interface Commands 8.2.3.22 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 8.2.3.23) which is used to open a set of data using a date/time range. The response to this command indicates the number of unread bytes in the date/time range specified by the last DATa:RECord:OPEN command. -
Page 114: Data:record:time? [Min|Max|Def]
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.3.25 DATa:RECord:TIME? [MIN|MAX|DEF] Returns the data recording period in seconds. Example: DAT:REC:TIME? Response: 120 Specifying the MIN, MAX, or DEF parameter returns the minimum, maxi- mum, or default value respectively. 8.2.3.26 DATa:RECord:TIME <num>|MIN|MAX|DEF Sets the data recording period setting in seconds. Example: DAT:REC:TIME 60 The <num>... -
Page 115: Sensor
8 Digital Communications Interface Commands The <bool> parameter turns the measurement averaging on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Pass- word Commands). 8.2.4.5 SENSor<chn>:LOCK? Returns the sensor lock state for the given channel number. Example: SENS1:LOCK? Response: 1 A value of 1 is returned if the sensor lock is enabled.:Lock -
Page 116: Sensor
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.4.9 SENSor<chn>:STATe? Returns the sensor status for the specified channel. Example: SENS1:STAT? Response: 0 The SENSor suffix, <chn>, 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.:State -
Page 117: Channel Commands
8 Digital Communications Interface Commands ment period to 2 seconds. This command may be password protected (see Sec- tion 8.2.10, Password Commands). 8.2.5 Channel Commands The channel commands are used for switching channels on and off. 8.2.5.1 ROUTe:CLOSe? <chn> Returns the state of the specified channel. Example: ROUT:CLOS? 1 Response: 0 The <chn>... -
Page 118: Calibrate
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.6.1 CALibrate<chn>:ALERt? Returns the state of the sensor calibration expired alert enable for the specified channel. Example: CAL1: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.:Alert -
Page 119: Calibrate
8 Digital Communications Interface Commands 8.2.6.6 CALibrate<chn>:DATE:DUE (<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 must all be specified. The <year> parameter is a four-digit number.:Date:due ( , , ) -
Page 120: Calibrate
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.6.11 CALibrate<chn>:PARameter:SCALe<num> <float> Sets the sensor calibration scale parameter for the specified channel. Example: CAL2:PAR:SCAL1 0.002 The CALibrate suffix, <chn>, specifies the channel (1 or 2). The SCALe suffix, <num>, specifies either temperature (1) or humidity (2). The <float> parameter specifies the value for the scale parameter.:Parameter:scale -
Page 121: System:beep
8 Digital Communications Interface Commands • Stops auto logging. • Sets the statistical functions. 8.2.7.4 SYSTem:BEEP Produces a short beep from the speaker. 8.2.7.5 SYSTem:BOOT:VERSion? Returns the boot ROM version. Example: SYST:BOOT:VERS? Response: 0.31 8.2.7.6 SYSTem:ERRor? Returns a message from the system error queue. Example: SYST:ERR? Response: 0,"No error"... -
Page 122: Unit:temperature
1620A “DewK” Thermo-hygrometer User’s Guide The response is either C for Celsius or F for Fahrenheit. 8.2.7.10 UNIT:TEMPerature <unit> Sets the system temperature unit. Example: UNIT:TEMP C The <unit> parameter must be either C or CEL for Celsius or F or FAR for Fahrenheit. -
Page 123: System:communicate:radio:option
8 Digital Communications Interface Commands 8.2.8.9 SYSTem:COMMunicate:RADio:OPTion? Returns the RF wireless installation, 0 (not installed) or 1 (installed). 8.2.8.10 SYSTem:COMMunicate:RADio:PAN? Returns the RF transceiver network PAN ID address. 8.2.8.11 SYSTem:COMMunicate:RADio:PAN <num> Sets the RF transceiver network PAN ID address applied when the RF trans- ceiver is subsequently enabled or reset. -
Page 124: System:communicate:serial:fduplex
1620A “DewK” Thermo-hygrometer User’s Guide A value of 1 is returned if serial port echo (duplex) is ON. A value of 0 is re- turned if serial port echo (duplex) is OFF. 8.2.8.17 SYSTem:COMMunicate:SERial:FDUPlex <bool> Sets the serial port echo (duplex) setting. Example: SYST:COMM:SER:FDUP 1 The <bool>... -
Page 125: System:communicate:serial:time
8 Digital Communications Interface Commands Response: 10 Specifying the MIN, MAX, or DEF parameter returns the minimum, maxi- mum, or default value respectively. 8.2.8.23 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.|Min|Max|Def -
Page 126: System:communicate:socket:gateway
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.8.31 SYSTem:COMMunicate:SOCKet:GATeway? Returns the LAN port default gateway IP address. 8.2.8.32 SYSTem:COMMunicate:SOCKet:GATeway <addr> Sets the LAN port default gateway IP address applied, if DHCP is off, when the LAN port is subsequently enabled or reset. The address <addr> has the format 255.255.255.255. -
Page 127: Date And Time Commands
8 Digital Communications Interface Commands Response: 90 The returned value indicates the current percentage of charge remaining in the battery. The battery charge level is approximate and should be used only as a guideline. 8.2.9 Date and Time Commands The date and time commands are used for accessing the date and time related settings. -
Page 128: System:decimal:format? [Min|Max|Def]
1620A “DewK” Thermo-hygrometer User’s Guide command may be password protected (see Section 8.2.10, Password Commands). 8.2.9.5 SYSTem:DECimal:FORMat? [MIN|MAX|DEF] Returns the decimal format used for the display. Example: SYST:DEC:FORM? Response: 1 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 (‘,’). -
Page 129: System:time:daylight? [Min|Max|Def]
8 Digital Communications Interface Commands 8.2.9.9 SYSTem:TIME:DAYLight? [MIN|MAX|DEF] Returns the automatic daylight saving adjustment setting. Example: SYST:TIME:DAYL? Response: 1 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). -
Page 130: System:password:alarm
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.10.1 SYSTem:PASSword:ALARm? Returns the state of the alarm settings password protection. Example: SYST:PASS:ALAR? Response: 0 A value of 1 is returned if the alarm settings are password protected; otherwise a value of 0 is returned. 8.2.10.2 SYSTem:PASSword:ALARm <bool>... -
Page 131: System:password:comm
8 Digital Communications Interface Commands 8.2.10.6 SYSTem:PASSword:COMM? Returns the state of communication settings front panel password protection. A value of 1 indicates protection is enabled, 0 otherwise. 8.2.10.7 SYSTem:PASSword:COMM <bool> Sets the state fo communication settings front panel password protection. <Bool>... -
Page 132: System:password:sensor
1620A “DewK” Thermo-hygrometer User’s Guide A value of 1 is returned if the sensor settings password-protection is enabled. Otherwise, a value of 0 is returned. 8.2.10.12 SYSTem:PASSword:SENSor <bool> Sets the state of the sensor settings password-protection. Example: SYST:PASS:SENS 1 The <bool> parameter turns the sensor settings password-protection on (1 or ON) or off (0 or OFF). -
Page 133: Status Commands
8 Digital Communications Interface Commands tected with this setting are: SYST:DATE, SYST:DATE:FORM, SYST:TIME, SYST:TIME:DAYL, and SYST:TIME:FORM. 8.2.11 Status Commands The status commands are used for querying and setting the state of the instru- ment registers. For details on the operation of the status registers refer to the SCPI standards. -
Page 134: Sre
1620A “DewK” Thermo-hygrometer User’s Guide Query error (QYE). An attempt has been made to read data when none is available or pending. Device dependent error (DDE). A hardware error condition occurred. Execution error (EXE). An invalid parameter for a command has been received or the command could not be executed under existing conditions. -
Page 135: Tst? [
8 Digital Communications Interface Commands 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 1620A “DewK” Thermo-hygrometer User’s Guide 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 bit 0 is 1: sensor unattached bit 1 is 1: sensor memory read failure...
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Page 137: Status:alarm
8 Digital Communications Interface Commands 9th number: battery monitor test 0: no error bit 15 is 1: error 10th number: button status (power-on test only) 0: no button press detected bit 0 is 1: EXIT pressed during power on bit 1 is 1: <up> pressed during power on bit 2 is 1: <down>... -
Page 138: Status:alarm:enable
1620A “DewK” Thermo-hygrometer User’s Guide no alarm Bit 0 Channel 1 temperature alarm bit. Bit 1 Channel 1 humidity alarm bit. Bit 2 Channel 2 temperature alarm bit. Bit 3 Channel 2 humidity alarm bit. Bit 4 Low battery alarm bit. Bit 5 Power failure alarm bit. -
Page 139: Status:measure:condition
8 Digital Communications Interface Commands 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 used. Example: STAT:MEAS? Response: 3 8.2.11.14 STATus:MEASure:CONDition? -
Page 140: Status:operation
1620A “DewK” Thermo-hygrometer User’s Guide Status Bit of the Status Byte Register. If any bit in the Measure Status Event Register is set (1) while its corresponding mask bit in the Measure Status En- able Register is set, the Measure Status Bit in the Status Byte Register will be set. -
Page 141: Status:operation:enable
8 Digital Communications Interface Commands 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:OPER:COND? Response: 16 8.2.11.19 STATus:OPERation:ENABle? This command returns the Operation Status Enable Register (see STATus:OP- ERation:ENABle <num>... -
Page 142: Status:questionable:condition
1620A “DewK” Thermo-hygrometer User’s Guide Bit 3 Not used. Bit 4 Measurement Invalid bit. Bit 5 Not used. Bit 6 Not used. Bit 7 Not used. Example: STAT:QUES? Response: 16 8.2.11.22 STATus:QUEStionable:CONDition? This command reads the Questionable Status Condition Register. Reading this register does not affect it. -
Page 143: Date And Time Formats
8 Digital Communications Interface Commands Questionable Status Enable Register is set, the Questionable Status Bit in the Status Byte Register will 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 Questionable Status Event Register is described in Section 8.2.11.21, STA- Tus:QUEStionable?. -
Page 145: Calibration Procedure
9 Calibration Procedure Equipment 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
1620A “DewK” Thermo-hygrometer User’s Guide 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 Temperature and Humidity Adjustments 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: − Terror Tn 2626 Treference Tn Measure the relative humidity using the 2626 probe and compare it with the relative humidity read from the chamber to obtain the humidity mea- surement error:... - Page 148 1620A “DewK” Thermo-hygrometer User’s Guide − RHerror RH RHerror RH ΔHSL = − × − ′ = + Δ 5. Calculate the slope-adjusted humidity errors: − ′ = Δ × RHerror RHn RHerror RHn 6. Calculate the median slope-adjusted humidity error, the adjustment ΔHOS to the humidity offset parameter HOS, and the new humidity off- set parameter: ′+...
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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 envi- ronments. -
Page 151: Troubleshooting
11 Troubleshooting 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 152: Self-Test Error Messages
1620A “DewK” Thermo-hygrometer User’s Guide 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. The results of the self-tests are reported on the screen. Normally, all tests report ‘OK’. Below is a table of error messages and recommended actions to correct the error. -
Page 153: Error Messages During Normal Operation
11 Troubleshooting Downloading Recorded Data 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. The internal memory of the DewK is cleared of the sensor's information to try to prevent the error from recurring. -
Page 154: Ce Comments
1620A “DewK” Thermo-hygrometer User’s Guide a) Use the menu function DATA RECORD - DATA PRINT to begin sending recorded data uning text format. See Section 7.3.1.3, Data Print. b) The thermo-hygrometer should immediately begin sending the data. If no readings have been stored, the thermo-hygrometer will not respond to these commands. -
Page 155: Emission Testing
11 Troubleshooting CE Comments 11.3.1.2 Emission Testing The instrument fulfills the limit requirements for Class A equipment but does not fulfill the limit requirements for Class B equipment. The instrument was not designed to be used in domestic establishments. 11.3.2 Low Voltage Directive (Safety) In order to comply with the European Low Voltage Directive (73/23/EEC), Hart Scientific equipment has been designed to meet the IEC 1010-1 (EN... -
Page 156: Canada
1620A “DewK” Thermo-hygrometer User’s Guide WARNING: To satisfy FCC RF exposure requirements for mobile trans- mitting devices, a separation distance of 20 cm or more should be main- tained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. - Page 157 11 Troubleshooting Frequently Asked Questions The 1620A allows you to download data using an RS-232, LAN, or RF (optional) communications. Can I change the data stored in memory? No. Data stored in memory cannot be changed. It can be downloaded, but the original data file cannot be changed.
- Page 159 Index Index display 21, 31 display layout 32 AC adapter 2, 19 accessories 11, 18 accuracy 9, 22, 139 air velocity 22 environmental conditions 10 alarm screen 21 error message 60, 139 average 26, 34, 46, 48 extension cable 20 battery 3, 11, 16, 19, 67 fields, display 34 baud rate 61...
- Page 160 Index sensor lock 28 serial number 34 operation 19 service centers 3 specifications 9 stabilization 23 stand 16 password 65 statistics 34, 46 - 47 period, measurement 26 storage capacity 41, 44 period, printing 61 switch 20 period, recording 40 system information 67 power 16 power switch 16, 20...