Based on the differences in the presentation, the tables are divided into one table (e. G., figure i) and one table (e. G., figure ii), and a brief presentation is made of the two basic methods of use of the tables。
Figure i: a table of all points
Figure ii
Basic method of use of the 01 pointer-type table
(1) installation of batteries, selection of plugs to be inserted into the graph。
Figure iii installation of batteries
Figure iv, black and red
(2) before testing, the pointer shall be placed in a table level and observed whether the pointer is in a 0-degree line. If it is not at the position of the 0-degree line, the " pointer to 0-bit " button at the bottom of the table needs to be adjusted to point the pointer to the 0-degree line。
Figure v pointer to 0-bit knob
(3) a reasonable choice of scale generally means that the pointer is not less than 30 per cent of the maximum number。
(4) prior to measurement there is a need to correctly select the measuring items and the quantities switches on the universal scale based on the object of measurement。
If the known orders of magnitude are measured, they can be directly matched by the order of magnitude。
If the unknown number of objects is measured, they need to be measured from the largest range (step-down) until the pointer is not less than 30 per cent of the maximum scale is appropriate。
(5) when measuring electrical resistance, the power source must be disconnected and no electron measurement may be carried. When the multiplier is also selected, calibration is required to contact the head of the black pen and the red pen to check if the pointer is at a point of zero。
Figure vi om to zero
If the pointer deviates from the position of the 0-degree line, the zero button will need to be adjusted so that the pointer returns zero to ensure the accuracy of the measurements. During the measurement process, hands should not be exposed to both ends of the resistance at the same time。
(6) during the use of the kiosk table, no hand contact shall be made with the metal part of the watch pen, and no dot switch switching shall be permitted to ensure accuracy and safety of measurements。
(7) when the meter is fully used, the knob switch will be rotated to the maximum stop of the exchange voltage. Batteries also need to be removed if they are not used in the long term in order to avoid the battery corrosion of internal appliances。
(8) the current voltage value reading is read from left to right on the tic and the resist value reading is read from right to left on the tic。
(mechanical zero refers to the process of adjusting the “mechanical zero-ringer” to point the point at zero (point zero of current, voltage scale) at the head of the table, depending on whether the point is zero. Om-zero means that before om was able to block the electrical resistance, direct contact was made with the two markers, adjusting the om-zero button and pointing the pointer to the "0" process
Basic use methods for measuring resistance in the form of a 2-02 number
(1) when the power is turned on, check first whether the battery's low capacity sign is lighted and, if light is lighted, replace the battery。
(2) before the operation, the functional knob is struck to the stop of the “beep-brokered diode” and the black and red pencils are then contacted to detect the conductivity. If there's nothing on the screen, the battery is dead. If there is a screen display and there is no beeping, check if the sound mode is open。
Figure vii conductivity test
(3) identification of numbers and symbols on display。
Chart viii display screen characters
(4) when measuring resistance, insert a black pen into the "com" hole, insert a red pen into the "v" hole, then hit the functional knob at the appropriate scale in the "first" block, and then use the black and red pen to contact the metal at both ends of the resistance. During the measurement process, hands should not be exposed to both ends of the resistance at the same time。
Figure ix, black and red table test options
