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Wahl TM612 User Manual

Manual is about: Pocket RTD Thermometer

Summary of TM612

  • Page 1

    Tm612 and tm612a pocket rtd thermometer user manual wd1020 rev f 04/08/15 tm612 - 2 - acknowledgements thank you for choosing this wahl instruments high accuracy measuring instrument. Wahl has been providing high quality, high accuracy measuring instruments for over 50 years. Because of this, we are...

  • Page 2

    Tm612 - 3 - - 3 - unpacking contents the tm612 (all references to the tm612 also include the tm612a unless otherwise indicated) was checked mechanically and electrically prior to shipment. The necessary precautions have been taken to ensure it reaches the user without being damaged. Nonetheless, it ...

  • Page 3

    Tm612 - 5 - - 5 - a. G eneral a.1 introduction the tm612 is a portable rtd thermometer (compliant with ec standards). It is especially designed for calibration and maintenance. It is used to measure resistance values or temperatures both on site and in the laboratory. The tm612 features a large numb...

  • Page 4

    Tm612 - 7 - - 7 - a.3.8 definitions a.3.8.1 definition of the category and degree of pollution cat ii 60v: this notion of categories determines the maximum voltage which can be applied to the measuring inputs (it is also referred to as the over voltage category). For the tm612, the ceiling over volt...

  • Page 5

    Tm612 - 9 - - 9 - b.1.2 the measuring and simulation terminals the tm612 is fitted with 4 safety banana jacks (4 mm in diameter) and a 4-pin circular connector. These connector assemblies are used for measurements. Hold key f1 function key clear key navigation key on/off key confirmation key (val) f...

  • Page 6

    Tm612 - 11 - - tm612a connector tm612 - 12 - b.1.3 the usb connector the tm612 is fitted with a usb connector (mini b) intended for uploading new software versions and device adjustment. B.1.4 the screen the tm612 is fitted with a graphic lcd display with back-lighting. The display resolution is 160...

  • Page 7

    Tm612 - 13 - - 13 - the table below provides a definition of each pictogram displayed on the screen: symbol description scaling on hold filtering %fs function (full scale) error condition -   indicates open input or extreme over-range of instrument (negative symbol with 6 dashes) + :   indicates...

  • Page 8

    Tm612 - 15 - - 15 - attention, the choice of °c or °f is made in the setup\preferences\unit of temp. Menu • press val (again) to confirm the desired function and go back to the measurement screen. The measure mode makes it possible to display the minimum (bottom left), average (bottom center) and ma...

  • Page 9

    Tm612 - 17 - - 17 - once the parameters have been set, the scaling is automatically enabled. To disable it, enter the configuration/scaling on menu, select off and confirm by pressing the val key. D.2 differential measurements the relative measurement function available on the device makes it possib...

  • Page 10

    Tm612 - 19 - - 19 - • enter the sensor information fields. Use the f1 function key ( ) to move from one field to the next. • confirm your choice using the val key. • to add a value in the table of calibration points, use the keys, enter the calibration points (real value and value read) then confirm...

  • Page 11

    Tm612 - 21 - - 21 - the drop-down list displays the following functions: save measurement: enable the triggering of an acquisition on a case-by-case basis. If an acquisition has already been opened, then the following screen is displayed: press the f2 key (yes) to confirm. • you are then requested t...

  • Page 12

    Tm612 - 23 - - 23 - at this level, it is possible to - display the trend curve entirely: press the f1 key (graph). - or place markers so as to display in the form of a graph all the values included between these 2 markers. To do so, press the f2 key. • using the navigation keys (↑ ↑ ↑ ↑ and ↓ ↓ ↓ ↓)...

  • Page 13

    Tm612 - 25 - - 25 - at this level, you can find out some statistics on the measurements made (minimum, maximum, average and standard deviation). • press the f2 key three times (…) followed by the f1 key (stat). • press f2 (measurements) to return to the table of values. • press clear to quit the sto...

  • Page 14

    Tm612 - 27 - - 27 - e. P arameter settings e.1 contrast adjustment in the configuration/setup menu, you can adjust the display contrast. • access this menu using the f1 key. • select the setup field using the navigation keys (↑ ↑ ↑ ↑and ↓ ↓ ↓ ↓), then confirm. • select the contrast field using the n...

  • Page 15

    Tm612 - 29 - - 29 - e.3.6 temperature unit setting in the configuration/setup/preferences menu, you can choose the temperature unit that will be displayed. • access this menu using the f1 key. • select the setup field using the navigation keys (↑ ↑ ↑ ↑and ↓ ↓ ↓ ↓), then confirm. • select the prefere...

  • Page 16

    Tm612 - 31 - - 31 - the 1 st screen indicates the gain and offset correction value found for the adjustment of this gauge. The counter indicates the number of adjustments the device has undergone with the date of the last adjustment. To perform an adjustment: • press the val key. The adjustment is p...

  • Page 17

    Tm612 - 33 - - 33 - g. T echnical specifications the precision expressions mentioned herein apply from + 18°c to + 28°c, unless otherwise specified, and are expressed in ± (n % r + c) where r = reading and c = constant expressed in practical units, for a confidence interval of 95%. They apply to a d...