TJ89A-2011 special measuring instrument for chromatograph calibration

The special measuring instrument for calibration of -type chromatograph is designed according to the requirements of -Gas Chromatograph Calibration Regulations and is suitable for use in metrology departments. The instrument is equipped with a standard interface and a random dedicated computer control program, which can easily realize automatic or semi-automatic measurement and automatically record archived measurement data. The column oven temperature control stability, temperature program repeatability, noise, drift, attenuator error and heating rate can be verified.
This instrument achieves stable measurement of precision voltage, which is the core technology of upgrading. It can measure temperature when used in conjunction with a platinum resistance thermometer. The calibration parameters of the thermometer and the calibration values of the instrument can be entered, modified and stored for a long time through computer operation. The instrument is small in size, light in weight, easy to carry and use, and is an ideal special instrument for calibration.
Main technical performance
.DC voltage measurement
Measuring range: - Range: . .
Maximum Resolution Measurement accuracy: .% (reading).% (full scale)
Input impedance Common mode rejection ratio d Series mode Suppression ratio d
, temperature measurement
r: used to match standard platinum resistance thermometer
r: used to match precision platinum resistance thermometer or industrial platinum resistance thermometer
<= dd


Measuring range:
.-.(-℃)
.-.(-℃)
Resolution:
.（.℃）
.（.℃）
Measurement accuracy:
.% (full scale)

Constant current source current ：