Yuav Ua Li Cas Calibrate Ib Rosemount 644 Kub Transmitter?
Cov cuab yeej xav tau los ntsuas qhov ntsuas kub ntawm PT100 (nrog HART raws tu qauv)
- Standard resistance box (los yog teeb liab generator)
- 644 kub transmitter
- HART handheld sib txuas lus
- High-precision digital multimeter (los yog calibrator)
- Ob peb kab
- Resistor
- DC 24V fais fab mov
Kev xaim
1. Txuas lub thawv tsis kam mus rau qhov kub thiab txias transmitter input, kom ntseeg tau tias siv peb-xaim / plaub-xaim kev sib txuas.
2. Txuas lub hwj huam mov, kub transmitter, 250-ohm resistor, ZYS digital multimeter nyob rau hauv series los ua ib tug kaw voj voj voog Circuit Court, xyuam xim rau polarity.
3. Txuas lub HART 475 handheld communicator hla cov resistor terminals. Kev xaim ua tiav.
Calibration
1. Txiav txim siab lub transmitter qhov ntau thiab xaiv yam tsawg kawg yog 5 ntsiab lus raws li cov ntsiab lus ntsuas.
2. Fais fab rau thiab teeb lub input tsis kam mus rau qis qis ntawm qhov ntau. Xyuas seb cov ntaub ntawv tso tawm ntawm lub transmitter thiab cov digital multimeter sib phim. Yog tias tsis yog, kho tus nqi qis qis hauv HART 388 kev sib txuas lus kom phim cov ntaub ntawv sib xws.
3. Kho tus nqi txwv sab sauv raws li hauv kauj ruam 2.
4. Rov ua cov kauj ruam saum toj no rau txhua qhov kev xeem.