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8

Communications Interface

Remote communications allows an external device, such as a computer, to com-
municate with the instrument to obtain measurement data and control its opera-
tion. Communication is accomplished with various commands issued to the
instrument through the RS-232 serial port.

8.1

RS-232 Connection

The three-conductor jack for the serial port is located on the top of the instru-
ment near the probe connector. One serial cable is included with the instrument.
Additional or longer cables, of three meters or less, can be constructed by fol-
lowing the wiring diagram shown in Figure 9.

NOTE:

The TxD line on one side connects to the RxD line on the other

and vice-versa.

To reduce the possibility of electrical interference, the serial cable should be
shielded with low resistance between the connector and the shield. It should not
be much longer than is necessary.

47

8 Communications Interface

RS-232 Connection

1

2

3

4

5

6

7

8

9

RxD

TxD

GND

RxD

TxD

GND

Figure 9

RS-232 Wiring

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Содержание Hart Scientific 1522

Страница 1: ...1522 Handheld Thermometer Readout User s Guide Rev 5B2202 Hart Scientific ...

Страница 2: ...ientific Division 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 2005 Printed in USA ...

Страница 3: ... 4 Quick Start 13 4 1 Unpacking 13 4 2 Use Proper Care with the 1522 and Accessories 13 4 3 Learn About the Features and Components 13 4 4 Connect the Probe 14 4 5 Connect the Power Source 14 4 6 Switch the Power On 14 4 7 Measure Temperature 14 5 Parts and Controls 17 5 1 Front View 17 5 2 Top and Side View 19 5 3 Back View 20 5 4 Internal Features 20 5 5 Accessories 21 6 General Operation 25 6 1...

Страница 4: ... Dump Data 36 7 5 Delta x Mode 36 7 6 Units 36 7 7 Rate 37 7 8 Resolution 37 7 9 CAL MODE 37 7 9 1 Mtr Due 39 7 9 2 Prb Due 39 7 9 3 Time 39 7 9 4 Passcode 39 7 9 5 Date 40 7 9 6 Probe Lock 40 7 9 7 Prb 40 7 9 8 Prb Type 41 7 9 9 ITS 90 41 7 9 10 IEC751 43 7 9 11 CVD 43 7 9 12 YSI 400 43 7 9 13 THERM 44 7 9 14 Probe Wires 44 7 9 15 PCal 45 7 9 16 PDue 45 7 9 17 Digital Filter 45 7 9 18 MCal 45 7 9...

Страница 5: ...ure 53 10 Maintenance 55 11 Troubleshooting 57 11 1 An Error Message Is Displayed 57 11 2 Downloading Autologged Data 58 11 3 Placement of Infrared Dongle for IR Data Transfer 59 11 4 CE Comments 60 11 4 1 EMC Directive 60 11 4 1 1 Immunity Testing 60 11 4 1 2 Emission Testing 61 11 4 2 Low Voltage Directive Safety 61 iii ...

Страница 6: ...re 2 Top and Side View 19 Figure 3 INFO CON Connector 21 Figure 4 Infrared Dongle 23 Figure 5 Battery Installation 25 Figure 6 12V DC Power Source Polarity 27 Figure 7 Probe Wiring Diagrams 30 Figure 8 Operating Modes Flowchart 32 Figure 9 RS 232 Wiring 47 Figure 10 Infrared Dongle Position 60 ...

Страница 7: ...the instrument or in this manual Symbol Description AC Alternating Current AC DC Battery CE Complies with European Union Directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On 1 1 Before You Start Symbols Used Table 1 International Electrical Symbols ...

Страница 8: ...avoid personal injury follow these guidelines DO NOT use this unit in environments other than those listed in the User s Guide Follow all safety guidelines listed in the User s Guide Calibration equipment should only be used by trained personnel This instrument can measure extreme temperatures Precautions must be taken to prevent personal injury or damage to objects Probes may be ex tremely hot or...

Страница 9: ... to measure the temperature or resistance of any device that is electrically energized Severe electric shock personal injury or death may occur 1 2 2 CAUTIONS To avoid possible damage to the instrument follow these guidelines If the instrument is dropped struck or handled in a way that causes inter nal or external physical damage immediately unplug the AC adapter re move the batteries discontinue ...

Страница 10: ...3 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 Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 512 3436 Tele...

Страница 11: ...h Lobby D 118502 SINGAPORE Phone 65 6799 5588 Telefax 65 6799 5588 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 5 1 Before You Start Authorized Service Centers ...

Страница 12: ...easures with a fast one second measurement cycle Displays maximum minimum and delta temperatures Uses a unique factory assigned passcode to protect programmed settings Displays measurements and settings on a high contrast LCD display Communicates with other equipment or a computer using an RS 232 se rial interface Can be powered from its AC adapter or rechargeable battery Stores up to 10 000 readi...

Страница 13: ...50 C to 75 C 0 03 C 0 054 F 75 C to 100 C 0 08 C 0 144 F Temperature Accuracy 10 kΩ thermistor 0 to 50 C 0 005 C 0 009 F 50 C to 75 C 0 01 C 0 018 F 75 C to 100 C 0 02 C 0 036 F 100 C to 125 C 0 05 C 0 09 F 125 C to 150 C 0 1 C 0 18 F Temperature Accuracy 100 kΩ thermistor 0 to 50 C 0 006 C 0 011 F 50 C to 150 C 0 009 C 0 016 F Resistance Resolution 0 001Ω Temperature Resolution 0 001 C F K R Prob...

Страница 14: ...ion errors The practical measurement range may be limited by the sensor 3 2 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 m...

Страница 15: ...ion has been caused by misuse alteration abuse or abnormal condi tions or operation or handling Hart will repair the product and bill the pur chaser for the reasonable cost of repair To exercise this warranty the purchaser must forward the product after calling or writing an Authorized Service Center see Section 1 3 The Service Center assumes NO risk for in transit damage THE FOREGOING WARRANTY IS...

Страница 16: ...t be purchased separately If all items are not present contact an Authorized Service Center see Section 1 3 4 2 Use Proper Care with the 1522 and Accessories First and most important is to understand the safety issues related to the 1522 and its accessories Be aware that potential hazards exist due to high tempera tures high voltages and battery chemicals Carefully read Section CAUTION The 1522 an...

Страница 17: ...C adapter see Sec tion 6 1 4 6 Switch the Power On Power is switched on and off with the power button located below and to the left of the display To switch the power on hold the power button down for at least three seconds and release To switch power off momentarily press the power button again The instrument takes a few seconds to power up initialize itself and begin normal operation During init...

Страница 18: ...essed or overheated It can be easily damaged if misused For further suggestions on handling the probe and using the 1522 and probe to measure temperature accurately see Section 6 5 For information on the various modes of operation of the 1522 see Section 7 15 4 Quick Start Measure Temperature ...

Страница 19: ...ontrols The functions of the various features of the 1522 are described below 5 1 Front View The front of the 1522 features the LCD display and control buttons 17 5 Parts and Controls Front View Figure 1 Front View ...

Страница 20: ...econds toggles the backlight on or off see Section 6 3 Note using the backlight drains the battery more quickly ENT enter button This button is pressed to accept changes to a setting and in some modes to store the most recent measurement CLR clear button This button cancels changes to a setting and in the MIN MAX mode resets the minimum and maximum to the last measurement Up and Down buttons These...

Страница 21: ...y and to power the instrument while the battery is being charged see Section 6 2 Serial Port The RS 232 serial port provides a means of connecting the 1522 to a computer or a printer using the included serial cable see Section 8 The baud rate is fixed at 2400 baud the linefeed is fixed to ON all carriage returns are followed by a linefeed ASCII decimal 10 and the duplex is fixed to Half disabling ...

Страница 22: ...battery status information from the power control circuit and handles communications through the serial port Power Control Circuit The power control circuit manages the electrical power that drives all the circuits It handles switching between the two sources of power DC input and battery pack regulates voltages monitors the state of battery charge and manages battery charging Analog to Digital Co...

Страница 23: ...nsures that the settings used to measure and calculate temperature always match the probe being used see Section 6 6 Probe The probe acts as the temperature sensor Its resistance depends on its temperature The 1522 precisely measures the resistance of the probe and uses the coefficients stored in the INFO CON connector to calculate its temperature see Section 6 5 The following probe options are av...

Страница 24: ...2 8 x 28 mm 0 02 C 0 01 C 5640 4K ohm Thermistor 0 to 60 C 1 4 x 9 6 35 x 229 mm 0 0015 C 0 005 C 5622 05 Pt 100 Ohm 4 wire 200 to 350 C 0 5 x 100 mm 0 035 C 0 15 C 5622 10 Pt 100 Ohm 4 wire 200 to 350 C 1 0 x 100 mm 0 035 C 0 15 C 5622 16 Pt 100 Ohm 4 wire 200 to 350 C 1 6 x 100 mm 0 035 C 0 15 C 5622 32 Pt 100 Ohm 4 wire 200 to 350 C 3 2 x 100 mm 0 035 C 0 15 C 5618 6 Pt 100 Ohm 4 wire 200 to 50...

Страница 25: ...d Adapter software can be used to program an INFO CON connector with new probe calibration coefficients without using the thermometer readout The Model 2372 INFO CON Down load Adapter has a 9 pin serial cable that connects to a serial COM port on a PC The INFO CON Download Adapter software can then be used to read edit and write changes to the INFO CON connector Carrying Cases There are two types ...

Страница 26: ...hed on The battery percentages are approximate and should be used as general guidelines when determining the length of charge remaining The battery is recharged in situ while in place using the AC adapter Plug the AC adapter into an AC socket of the appropriate voltage as noted on the AC adapter normally 115V optionally 230V Connect the DC plug of the adapter into the DC input of the 1522 located ...

Страница 27: ...pack 3 Remove the battery pack by gently disconnecting the battery plug from the connector Note the orientation of the battery plug on the connector 4 Attach the polarized plug of the new battery pack onto the connector in the same direction as before see Figure 5 on page 25 Place the battery pack in the battery compartment 5 Replace the battery cover and screw 6 Plug in the AC adapter and charge ...

Страница 28: ...ble summarizes the power button functions Function Action Power on Press and the power button for at least three seconds Power off Press the power button momentarily 1 2 second or less while the power is on Backlight on Press and hold the power button for three seconds or more while the power is on and the backlight is off Backlight off Press and hold the power button for three seconds or more whi...

Страница 29: ... measurements to be accurate see Section 6 6 The 1522 can be used with various types of PRT and thermistor probes ITS 90 calibrated 25Ω or 100Ω PRT IEC 751 or DIN 43760 PRT RTD Callendar Van Dusen calibrated 100Ω PRT YSI 400 series or equivalent 2252Ω thermistor Steinhart Hart thermistor polynomial nominal R 25 C 2kΩ to 100kΩ See Section 7 9 8 for details on the various probe types and their progr...

Страница 30: ...lowing the instrument to measure tem perature accurately Generally the probe is purchased with the connector at tached and programmed by the factory Connectors can be purchased separately and installed onto probes by the user The INFO CON can be programmed di rectly from the 1522 or from a PC with the optional Model 2372 accessory and 9972 software If it is necessary to install the INFO CON onto a...

Страница 31: ...horted together 1522 Handheld Thermometer Readout User s Guide 30 GND P1 C2 P2 C1 J1 J2 Hart Scientific Four wire Connection GND P1 C2 P2 C1 J1 J2 Hart Scientific Three wire Connection GND P1 C2 P2 C1 J1 J2 Hart Scientific Two wire Connection Short Short Figure 7 Probe Wiring Diagrams ...

Страница 32: ... re set Demand Logging Store readings up to 100 on demand in the memory registers Auto Logging Store readings up to 10 000 automatically in memory at user selected intervals Delta x Display delta from reference measurement ENT to set refer ence Units C Ω F K R Set the units of measurement Rate 00000 Set the period for serial transmission Resol XXX XXX Set the display resolution CAL MODE Set probe ...

Страница 33: ...pears on the display 1522 Handheld Thermometer Readout User s Guide 32 Blank Mode Set Units Min Max Mode Set Rate Set Resolution Cal Mode Demand Logging button button button button button button 3 seconds any mode button MODE MODE MODE MODE MODE MODE MODE Delta x Mode button MODE Auto Logging button MODE Figure 8 Operating Modes Flowchart ...

Страница 34: ...ay be displayed 7 3 Demand Logging This mode is identified by Demand Logging which temporarily appears on the screen In this mode up to 100 temperature readings with units date time and label can be stored as required This mode also allows all on demand data points to be viewed The logged values can be downloaded to a PC using the serial port 7 3 1 Demand Log Label and Data Storage This function a...

Страница 35: ...in the terminal window and the second line displays Downloading data The instrument advances to the next function when all values have been down loaded Pressing the CLR button before or during downloading causes the download to stop and advances to the next function To exit the Demand Log Mode press the MODE button The demand logged data can also be downloaded using the 2374 IR dongle with the 993...

Страница 36: ...label se lected When selecting labels press the ENT button to store the displayed label or press the CLR button to revert to the previously selected label The labels can be pre loaded using Windows HyperTerminal or other serial communications program and the command LBnn nnnnnnnn as described in Section 8 2 1 The labels can also be pre loaded using the serial port or the 2374 IR dongle with the 99...

Страница 37: ...LogWare software also provides a utility to view and change logging labels 7 5 Delta x Mode This mode is identified by Delta x that temporarily appears on the display In this mode the delta between the measurement and a previously stored refer ence value appears on the right side of the display The reference value appears on the left The resolution of the reference value may be changed using the R...

Страница 38: ...set to 2 every other sample is sent to the serial interface A value of 0 disables transmission The Up and Down buttons are used to increase or decrease the value for the underlined digit The ENT button moves to the next digit If the ENT button is pushed when the last digit is underlined the setting is stored If the MODE button or CLR button is pressed the value remains unchanged Once the value is ...

Страница 39: ... contained in the CAL Mode are listed below in the order they ap pear In any of the functions the ENT button stores the displayed value or se lection and advances to the next function The CLR button can be used to cancel changes to a value or selection and to skip to the next function Use the ENT button to move from Mtr Due to Prb Due and then to Time Use the CLR button to quickly advance through ...

Страница 40: ... in detail in the following subsections 7 9 1 Mtr Due This function displays the date the instrument is due for calibration The date cannot be changed with this function To edit the meter due date refer to Sec tion 7 9 19 7 9 2 Prb Due This function displays the date the probe is due for calibration The date is stored in the INFO CON probe connector The date cannot be changed with this function To...

Страница 41: ...e segments Press ENT when all digits are en tered to save the changed values The CLR button moves to the next function without saving the changed values 7 9 6 Probe Lock This function locks or unlocks operation of the unit with the presently con nected probe only To set probe lock use the Up and Down buttons to select ON or OFF and press the ENT button to store the selected setting and continue If...

Страница 42: ...nnector Use the Up and Down buttons to select the probe type and the ENT button to store and continue Each of the coefficients that follow the probe type are set in the usual way Use the Up and Down buttons to set each digit and the ENT button to move to the next digit to the right Press ENT when all digits are entered 7 9 9 ITS 90 The ITS 90 type is for PRTs calibrated and characterized using the...

Страница 43: ...lues for coefficients R 273 16K a4 b4 a8 and b8 Set the instrument s coefficients to the certificate values as follows Coefficients Certificate Value R 01 R 273 16K a a8 b b8 c 0 0 d 0 0 a4 a4 b4 b4 Example 2 A PRT was calibrated to ITS 90 and its calibration certificate states values for coefficients R 273 16K a5 and b5 Set the instrument s coefficients to the cer tificate values as follows 1522 ...

Страница 44: ...ge 180 C to 420 C or higher and has moderate accuracy 0 05 C to 1 C This type uses the Callendar Van Dusen equation to calculate temperature from resistance r t C R t t t R 0 0 1 1 100 100 1 0 α δ 1 100 100 1 100 1 100 3 α δ β t t t t t t 0 The coefficients R0 α δ and β can be set by the user using the functions R0 Alpha Delta and Beta respectively When editing Alpha there is an assumed 10 3 expon...

Страница 45: ...ould be set to 0 Consider the following examples Example 1 A thermistor has coefficients for the equation ln R as a function of T given as a b c and d Set the instrument s coefficients to the Report of Calibration val ues as follows Coefficients Report of Calibration Value b0 a b1 b b2 c b3 d Example 2 A thermistor has coefficients for the equation ln R as a function of T given as a b and c Set th...

Страница 46: ...ssage disappears only when the probe is recalibrated and the probe calibration due date is set to a fu ture date To set the date use the Up and Down buttons to set each date segment and the ENT button to move to the next date segment to the right Press ENT when the date is correctly entered Press CLR to move to the next function without changing the date If any of the parameters in the CAL Mode we...

Страница 47: ...ns to set each date seg ment and the ENT button to move to the next date segment to the right Press ENT when the date is correctly entered Press CLR to move to the next func tion without changing the date 7 9 20 CAL1 and CAL2 The CAL1 and CAL2 calibration parameters calibrate the instrument s PRT range and thermistor range respectively These parameters directly affect the accuracy of the instrumen...

Страница 48: ...tru ment near the probe connector One serial cable is included with the instrument Additional or longer cables of three meters or less can be constructed by fol lowing the wiring diagram shown in Figure 9 NOTE The TxD line on one side connects to the RxD line on the other and vice versa To reduce the possibility of electrical interference the serial cable should be shielded with low resistance bet...

Страница 49: ...st 8 2 1 Primary Commands The following group of commands read or set various functions Description Command Example Response Format Response Example Range Read measurement extended format t emperature t t 999 999 C O F R or K mm dd yyyy hh mm ss t 125 745 C 03 01 1999 15 49 15 Read measurement simple format f etch rea d me asure fetch read meas t 999 999 C O F R or K t 25 587 C Read minimum m inim...

Страница 50: ...x 999 999 C O F R or K dx 0 118 C Set delta x reference to pres ent measurement sd x sd Read unit u nit u u C O F R or K u C Set unit u nit C O F K R u C C O F K R Read serial sample rate sa mple sa sa 99999 sa 10 Set serial sample rate sa mple n sa 60 0 to 10 000 Read resolution digits re solution res res 9 res 3 Set resolution digits re solution n res 0 1 to 3 Read time ti me time ti hh mm ss ti...

Страница 51: ...as ps 9 Ps 0 0 or 1 Read date da te date da yyyy mm dd da 1999 03 28 Set date da te yyyy mm dd da 1999 03 28 1999 01 01 to 2100 12 31 Read probe serial number se rial ser ser xxxxxxxxxx ser 100231A Set probe serial number se rial xxxxxxxxxx ser 001 0 to 9 A to Z Read probe type p robe pr pr ITS 90 IEC751 CVD YSI400 THERM pr ITS 90 Set probe type p robe IT S 90 IE C751 C VD Y SI400 T HR pr ITS 90 I...

Страница 52: ... Read low range calibration c1 c1 c1 9 999 c1 0 0121 Set low range calibration c1 n c1 0 012 1 999 to 1 999 Read high range calibration c2 c2 c2 9999 9 c2 0 9 Set high range calibration c2 n c2 0 9 1980 0 to 1980 0 Read meter calibration date mc al mcal mc yyyy mm dd mc 1999 03 28 Set meter calibration date mc al yyyy mm dd mc 1999 03 28 1971 01 01 to 2099 12 31 Read meter due date md ue mdue md y...

Страница 53: ... 10 kΩ 40 kΩ 100 kΩ and 500 kΩ resistors must be programmed with the THERM probe type with units set to ohms 9 2 Calibration Procedure Calibration requires adjustment of the CAL1 and CAL2 parameters at 100Ω and 10 kΩ respectively see Section 7 9 20 The calibration parameters can be accessed from the front panel by pressing the MODE button and holding it for three seconds releasing it then pressing...

Страница 54: ... 0Ω 4kΩ 10 kΩ 40 kΩ 100 kΩ and 500 kΩ 5 Set the meter calibration date to the present date see Section 7 9 18 6 Set the meter due date to a user defined date see Section 7 9 19 1522 Handheld Thermometer Readout User s Guide 54 ...

Страница 55: ...ardous material is spilt on or inside the equipment the user is re sponsible for taking the appropriate decontamination steps as outlined by the national safety council with respect to the material Before using any cleaning or decontamination method except those rec ommended by Hart users should check with an Authorized Service Cen ter see Section 1 3 to be sure that the proposed method will not d...

Страница 56: ...operly programmed for the new probe See Section 7 9 6 Probe Lock Prb cal expired The probe calibration has expired Have the probe calibrated and the calibration due date reset Mtr cal expired The meter calibration has expired Have the instrument calibrated and the calibration due date reset Invalid Passcode The passcode entered was not correct Check the passcode on the Passcode Notice sent with th...

Страница 57: ...Press any key again to resume normal operation Also check other settings in the thermome ter if used such as filter units and resolution The number follow ing the message is used by authorized technicians Memory Invalid A critical parameter CAL1 CAL2 Passcode Meter Due Date Meter Cal Date or Serial Number is corrupt and the instrument cannot re cover the correct value for that parameter Press any ...

Страница 58: ...le the baud rate b Send the command DAUT once again at the new baud rate The 1522 should immediately begin downloading the data at 9600 baud If no readings have been stored the 1522 will not respond to DAUT command c When downloading is complete the 1522 automatically sets its baud rate back to 2400 baud d If the terminal program was set to capture the incoming data to a file stop capturing at thi...

Страница 59: ...onfiguration 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 11 4 1 1 Immunity Testing The instrument was tested to the requirements for industrial locations This al lows the inst...

Страница 60: ... 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 4 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 61010 1 and the IEC 1010 2 010 EN 61010 2 010 s...

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