In these days, a collisional-radiative model (CR-model) is an important model for the plasma spectroscopy. The CR-models for hydrogen, carbon and oxygen have been developed in anywhere. The CR-model for hydrogen is normally used for neutral density measurement in many fusion plasma devices. However the comparison between the calculation results of CR-model for impurity ions and the experimental results must be carried out in many types of plasmas for construction of the model for plasma diagnostics. Then we have studied impurity ion spectral intensities in the HANBIT plasma at Korea Basic Science Institute in Korea, in order to compare the spectroscopic results and the CR-model calculation for plasma diagnostics. It is a suitable plasma device for lower charged ions of CR-model calculations. HANBIT device consists of a simple mirror at the center with a baseball coil based minimum-B mirror and a short axisymmetric mirror on each end of the central cell. The typical plasma parameters are 40 eV electron temperature and 2 × 10¹² cm^-3 electron density. A 5-channel UV/V spectrometer is absolutely calibrated by a standard irradiance lamp. Then we can obtain the absolute brightness of line spectra of the UV/V wavelength range from the HANBIT plasma. We measured hydrogen Balmer series line emissions using the UV/V spectrometer and Lyman series line emissions using a VUV spectrometer, simultaneously. By comparing the CR-model calculation results for hydrogen to measured hydrogen emission lines, we can obtain the relative sensitivity of VUV spectrometer. It is almost constant with its observing wavelength range. Moreover, we studied the time dependent neutral hydrogen and impurity ion behaviors in HANBIT plasma.