SU474705A1 - Device for calibration of technical thermocouples and resistance thermometers - Google Patents

Description

Included in the “Revised or” Measurement are lere-switches of the genus 17-20. The readings of the instrument 1C.N1 are from a scale of 2}

The device worksNext.

A. Testing Thermometers with Detection: The calibrated thermometers of aprocheting place a thermostat. Subsequently, with matching thermometers of 22 volts, the purpose of the source of new technology 12 includes an exemplary magnetizer resistance 13, for example, MSR-60M.

Next, the device is built: switch W is set, in the control position, switch 2 is in the position “Graduation guide, switch 8 kind of work-” (Position “Ko / control, while the input of amplifier 6 is connected. Resistor 9. Falling; It is supplied from the resistor 11 to the input of the device. The voltage supplied by the amplifier 6 turns on the rotor of the reversing motor 7 moving the arrow on the measuring scale 21. With a variable variable eo counter-current 4 n 5 arrow The device mouth is turned to zero - the middle of the scale. Switch S stas mc In the "Measurement. On Magazine; Not With: 1 Resistance / 5" condition is set, ss1P | Rot .. and corresponding to the resistance of the ter: mosoprottv1I At this temperature point. L1CP), switch 2 - to the position Corresponding to praduiroke at О 1Il; Tgri 100 ° C. With the help of variable resistors; With the switch W, the followers С1о, d1 switches 0tc, the calibrated thermometers are compiled; H; n 22 to the measuring circuit / circuit and the number of readings is counted on the resistance bar. Such metering is done in inapoBOM l zero thermostats. Further, the deviation from the nominal of the judge is judged by the usefulness of the guests of the thermostat.

B. P 3 M ere ni e te rm about - e. d. The switch 10 is installed in the position of the exemplary thermocouple, the switches 17 -

20 - to the position “Cantrol. TOC adjustment in lechi installs necessary te. peraturu (300, 400, 500, 600 ° C). Approximately IB direct m. (And inverse. order. Tested thermocouples (connect; to the clamp of the TP switch 10. By setting the temperature to ONE OF points, Switch 2 is set to this graduated thermal / pair. Switches 17-20 are set to the "Measurement. Arrow of the mushroom using variable Resistances 4 and 5 set to zero. Next, becoming a switch 10 in 1The position of the "TeipMonapa-TP, directly in the scale" of the devices of the laborer, is read and the suitability of those rmocouples is determined. Your thermocouple is connected to one of the 1 of the zymi.

When testing a thermocouple on an installation site on a process equipment, the following sensors can be used as exemplary sensors: platinum-based boards, foreigners, thermocouples, and thermopairs of the same calibrations and compositions that are checked, after which the calibration in Committee of Standards of the USSR.

The invented me and.

thirty

Device for: testing of technical thermometers. And thermometers of resistance, containing test circuits of thermometers and thermometers

The resistances are connected by the campanzemon chain through optional circuits, characterized in that, in order to visually assess the deviation of the 1ns-1p from my reference, both ayuveryu and vzg-circuits from Voltage, variable resistances and resistors, ONE of comlensioli targets is supplied with a voltage divider and 1 variable: AND

resistors; and, and the second, with a resistor that short-circuits the input of a zero-body made in (in the form of an electronic amplifier; it is, which, through a reversible motor, is charged with a calibrated reochord (compensation circuit

.and a pointing device arrow.

i

jn -1 i

/

CZib4 -i-L M / 5

u

I

.

/five

.L