BetaProbe TI/TI+ High Accuracy Digital Thermometer User Reference Manual
1. Introduction The BetaProbe TI/TI+ is designed to be a high precision digital thermometer that can be used in place of mercury liquid in glass (LIG) thermometers. It can also be used as a reference standard to check the accuracy of other types of digital or analog thermometers. Because of its intrinsically safe certification it can be used in many of the same hazardous locations as analog thermometers.
Symbols Used This unit was designed to meet the above requirements using: The following table lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual. EN 60079-0:2006 ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES -- PART 0: GENERAL REQUIREMENTS (IEC 60079-0:2004 (MOD)) Symbol Description EN 60079-11:2007 EXPLOSIVE ATMOSPHERES -- PART 11: EQUIPMENT PROTECTION BY INTRINSIC SAFETY "I" (IEC 60079-11:2006 (EQV) + CORRIGENDUM DEC.
2. BetaProbe TI/TI+ Display and Controls 3. Operation Insertion Depth and Usage The BetaProbe TI/TI+ should be inserted to a minimum depth of 2.5" to obtain specified accuracy of measurement. The final 2 inches of the probe should always be exposed to prevent high temperatures from damaging the instrument's electronics or housing. See illustration below.
Stabilty Display Stability Limit The stability display shows the general stability level relative to a user configurable stability limit. There are 4 preset settings for stability represented in °C or °F (0.01, 0.1, 1.0, or 10.0). When the limit is exceeded, it also shows the general direction in which the readings are presently moving. The stability level is calculated from a moving sample window of six seconds duration, with the value extrapolated to a 1 minute time base.
Damping Start or Stop Data Logging The Damping function is a running average of readings used filter out "noisy" temperature sources. The choices are OFF, 2, 5, or 10 sample average. The logging status shows "FULL" if the data logging memory is full, "OFF" if not presently logging data, or "ON" if presently logging data. Pressing ENTER allows you to change the logging status. Change the damp setting to the next item in the list, cycling from the last to the first.
4. Changing the Batteries WARNING WARNING Explosion hazard Batteries must only be changed in an area known to be non-hazardous. The RS-232 interface must not be used in hazardous areas. 5. Cleaning To clean the BetaProbe TI/TI+ use a cloth with a mild cleaning solution. 6. Calibration The BetaProbe TI/TI+ can be calibrated in the field by one of three methods depending on the extent of the calibration needed.
7. Specifications (23 ± 5°C unless noted) Measurement Range: BetaProbe TI: -50°C to 160°C (-58°F to 320°F) BetaProbe TI+: -50°C to 300°C (-58°F to 572°F) Accuracy (1 year): ± 0.06°C (0.1°F) Resolution: Selectable (0.1, 0.01, 0.001) factory default is 0.001 Sample Rate: User selectable 0.5/sec, 1/sec or 2/sec factory default is 1/sec Operating Temperature Range of Readout: -10°C to 50°C EMC Compliance: EN61326:2006 Annex C CISPR II, Edition 5.0-2009 Class “B” Humidity Range: 0 to 95% R.H.
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