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H HH HT TF FO O
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TABLE OF CONTENTS 1 INTRODUCTION ........................................................................................................................................................5 1.1 HHTFO PRODUCT SPECIFICATIONS ............................................................................................................................6 1.2 CALIBRATION .......................................................................................................................................
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Warning Permanent damage may be done to the thermometer if the power supply connections are not done correctly. Only use the supplied 6VDC power supply module to operate the HHTFO; please note that this module will not charge any internal batteries. This product does not contain any user-serviceable parts. Opening this precision instrument will void its warranty and disturb its factory calibration. Always seek servicing from an authorized Omega Engineering service depot. Fiber optic
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1 INTRODUCTION Congratulations on the purchase of your HHTFO Series thermometer product! Your new temperature- sensing instrument will soon allow you to take full advantage of the benefits inherent to fiber optic sensing technology. It offers accurate and reliable temperature measurements, combined with extraordinary insensitivity to EMI/RFI, high voltage insulation and disturbance free sensing due to the non-electrical nature of the sensor element used. Not only does the HHTFO Series of
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1.1 HHTFO p pr ro od du uc ct t s sp pe ec ciif fiic ca at tiio on ns s Resolution 0.1°C Accuracy The Greater of 1°C or 1% of reading Calibrated Temperature -40° to 200°C Range Usable Temperature -80° to 250°C Range Number of channel 1 Probe length 1 to 300 meters Response time Typically 0.2 to 1 second ( (P Pr ro ob be e a an nd d s se ettttiin ng g c co on nffiig gu ur ra attiio on n d de ep pe en nd de en ntt) ) Sampling rate is ~ 5 Hz Unit User selection of °C or °F Da
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Coupling,, iin nc cllu ud de ed d w wiit th h e ex xt te en ns siio on n c ca ab blle e: : FOBS-CAB-(*) E Ex xt te en ns siio on n C Ca ab blle e: O Otth he er r o op pttiio on ns s a an nd d c co on nffiig gu ur ra attiio on ns s a ar re e a alls so o p po os ss siib blle e;; c co on ntta ac ctt O Om me eg ga a ffo or r m mo or re e iin nffo or rm ma attiio on n.. 1.2 Calibration Your HHTFO tth he er rm mo om me ette er r c co om me es s ffa ac ctto or ry y-calibrate
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2 UNPACKING Before using your HHTFO thermometer, check the box content to be sure all items have been included. Your package should normally contain: • HHTFO signal conditioner unit • Power supply module (universal input: 100-240VAC, 50/60Hz; output: 6VDC). Note: this is not a battery charger. • Short extension cord and mating sleeve (should be used to minimize damages to the connector at the HHTFO interface) • User manual (this manual) • Calibration Certificate. Options: • Fiber
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3 QUICK INTRODUCTION The best way to familiarize you with your new HHTFO thermometer is, of course, to use it! This chapter shows you how to prepare your unit and do some initial measurements. The detailed instructions are given in the next Chapter. Your new HHTFO comes calibrated and ready to use. If the unit has not been used already, install fresh AA alkaline or rechargeable batteries. This figure shows the main view of the HHTFO, along with the top and bottom views. SD flash card P
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Note: A small battery inside the H HH HT TF FO O k ke ee ep ps s tth he e ttiim me e a an nd d d da atte e r ru un nn niin ng g e ev ve en n w wh he en n tth he e m ma aiin n b ba atttte er riie es s a ar re e n n no o ottt iiin n ns s sttta a alllllle e ed d d o o or r r w w wh h he e en n n ttth h he e e A A AC C C p p po o ow w we e er r r m m mo o od d du u ullle e e iiis s s n n no o ottt u u us s se e ed d d... T T Th h hiiis s s s s sm m ma a allllll
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4 HHTFO TH HE ER RM MO OM ME ET TE ER R HARDWARE REFERE EN NC CE E 4.1 Display description T Th he e d diis sp plla ay y iis s o or rg ga an niiz ze ed d iin n 3 3 llo og giic ca all r re eg giio on ns s:: • T T Th h he e e ttto o op p p p p po o or r rtttiiio o on n n g g giiiv v ve e es s s g g ge e en n ne e er r ra a alll iiin n nfffo o or r rm m ma a atttiiio o on n n ttto o o ttth h he e e u u us s se e er r r a a ab b bo o ou u uttt ttth h he e e u u un
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T Th he e U Up p a an nd d D Do ow wn n k ke ey ys s c ca an n b be e u us se ed d tto o:: • W Wh he en n iin ns siid de e a a m me en nu u,, tto o s se elle ec ctt a a p pa ar ra am me ette er r • W Wh he en n a a p pa ar ra am me ette er r iis s h hiig gh hlliig gh htte ed d,, tto o c ch ha an ng ge e iitts s v va allu ue e • The Up key can be used tto o s sn na ap p tth he e p pr re es se en ntt tte em mp pe er ra attu ur re e v va allu ue e tto o tth he e ll
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Warning The flash card must be formatted before use. Furthermore, it is important to format it in FAT or FAT16 (not FAT32). Supported card size is limited to 1Gbyte (larger formats are not supported by FAT16). You can format your flash cards on a PC, if you want; however, make sure you format it in FAT16. The HHTFO includes a format command, where FAT16 is always used. The HHTFO is designed so it can only write to SD flash cards. To read back temperature data, remove the card from the
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Take note that this format function will only perform a “quick format” procedure; if you want to do a full format, please use your PC to perform a format operation. Furthermore, you will not be able to format a flash card that is not already formatted in FAT16 (use a PC computer to format a card that would be in FAT32). 4.5.3 The Enable sub-menu This sub-menu allows you to engage or disengage the logging feature. This parameter must be ON to be able to do logging. To actually start the logg
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The lock feature on your SD card is engaged. You need to unlock it before using the card. The HHTFO is running from the internal batteries. Icon indicates the approximate amount of charge remaining. When almost fully empty, the message “LOW BATTERY” is also displayed, for about 5 to 15 minutes, before auto-shutting off without further warning. Note: This display is only valid when rechargeable batteries (NiMH or NiCd) are used; if you are using non-rechargeable alkaline batteries, the c
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5 USING TEMPERATURE PROBES 5.1 Caution Each time you connect a temperature probe to the unit, the probe optical connector should be cleaned beforehand. Otherwise, particles of grease or dirt may obstruct the device internal connector and affect the measurements by completely blocking the signal or by generating too much attenuation when using a long fiber length. Never use a cloth other than the type recommended for fiber optic cleaning. Dampening the cloth with pure isopropyl alcohol e
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5.3 Warning The T1 probe is quite fragile and it must be handled carefully. Please note that any probe damages are not covered by the standard warranty. The probe tip is made of silicone rubber. Although silicone is resistant to a large number of chemical aggressors, strong acids or alkali may damage it, especially at high temperature and/or if used for extended periods of time. Warning: Strong solvents and fuel oils can cause problems for silicone rubber. Omega Engineering also manufa
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6 SERIAL COMMUNICATION DESCRIPTION You can communicate with your thermometer via the standard RS-232 link. A description of the cable requirements is given above, under front panel item # 3. RS-232 functions (or commands) can be accessed with a simple terminal, with the FOB100-SOFT software package or simply with a computer and communication software (such as Windows Hyper Terminal). Your software should be set at 9600 Baud, 1 Stop-Bit and No-Parity. 6.1 Using Hyper Terminal in Windows
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HHTFO101 Description b Return enclosure temperature f[j] Set point adjustment to [j] h Help menu (this screen) i Get factory and status information q Scanning rate (q+ for fast/quick, q- for slow) t Get Temperature reading channel ta[i] Auto temperature output to serial port (+ to enable, - to disable) o o u[i] Unit (c = Celcius, f = Fahrenheit) y Probe power 6.3 Detailed description of RS-232 commands All commands must be terminated by a carriage return character ( E ). When m
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“i” Returns general information regarding the instrument, as well as some parameters that have been programmed previously in the thermometer (either by RS-232 commands or via the keypad): Ex: Model: HHTFO101 Option: NB Channel: 1 Mode: Continuous Scanning Mode Scanning rate: Fast Serial: HHTFO111A Internal Software: V1.21 Last Factory Calibration*: 05/02/04 (YY/MM/DD) o Unit C Keyboard Status: Unlock Channel Zero Span Enabled Temperature offset* 1 xxx.x xxx.x Yes/No ±xxxx
