RTI Technologies, Inc. 10 Innovation Drive York, PA 17402 USA 717-840-0678 www.rtitech.
TABLE OF CONTENTS INTRODUCTION ............................................................................... 1 WARNINGS ....................................................................................... 1 CLASSIFICATION ............................................................................. 2 NITROGEN TESTER FEATURES AND FUNCTIONS ...................... 2 LCD Display ................................................................................. 2 ON Button/Auto OFF ..........................
INTRODUCTION This manual describes the function, operation and maintenance of the Nitrogen Tester. The intent of this manual is to describe the function of the Nitrogen Tester only. The final assembly manufacturer should provide operating instructions for the completed assembly. The Nitrogen Tester is engineered for long life, maximum reliability and stable performance.
CLASSIFICATION Protection against electric shock: Internally powered equipment. Protection against water: IPX4 – Splash-proof Mode of Operation: Continuous NITROGEN TESTER FEATURES AND FUNCTIONS LCD Display: A three-digit display provides a direct readout of nitrogen concentration in the range of 0 - 99.9 percent. The display is blank when the Nitrogen Tester enters its sleep (power off) mode.
4. Press and hold the Calibration Key for three seconds until the display reads “CAL”. This will calibrate the Nitrogen Tester to room air. Thereafter, calibration is recommended on a weekly basis. A new calibration is required when: ! The measured N2 percentage in 79.1 percent N2 is above 80.1 percent N2 ! The measured N2 percentage in 79.1% N2 is below 78.1 percent N2 ! If unsure about the displayed N2 percentage (see Factors influencing accurate readings). 5. The Nitrogen Tester is ready to use.
Pressure Effects Readings from the Nitrogen Tester are proportional to the partial pressure of oxygen. The partial pressure is equal to the concentration times the absolute pressure. Thus, the readings are proportional to the concentration if the pressure is held constant. Therefore, the following are recommended: ! Calibrate the Nitrogen Tester at the same pressure as the sample gas. ! If sample gases flow through tubing, use the same apparatus and flow rates when calibrating as when measuring.
CAL Err lo: Sensor voltage too low Press and hold the Calibration Button for three seconds to manually force a new calibration. If unit repeats this error more than three times, contact RTI for possible sensor replacement. CAL Err hi: Sensor voltage too high Press and hold the Calibration Button for three seconds to manually force a new calibration. If unit repeats this error more than three times, contact Customer Service for possible sensor replacement.
