1 minute read
Checks and Calibration
CHECKS AND CALIBRATION OF THE TX6383 CH4 TROLEX
Unit should be in fresh air, or fresh air is to be supplied. The unit should have the GREEN LED illuminated. Check reading. If not zero go to Step 3. If the unit reads zero there is no need to zero. (Go to Step 6). To calibrate zero hold both buttons in for three seconds LED will go to RED which means the unit is in Calibration Mode. Whilst the RED LED is illuminated press and hold the bottom button until the LED is flashing GREEN. Release button and the unit will auto zero, after auto zeroing the unit will go to normal operating mode. The LED will go to GREEN. Turn the zero gas off. Apply the nominal span gas. Allow for sufficient time for reading to be stable. The reading should be ±10% of reading or ±5% of full scale whichever is least. If reading is outside of tolerance got to the Step 9. If the reading is within the tolerance turn gas off and allow reading to go back to zero. (Go to Step 12) Press and hold both buttons for three seconds. Span gas must be left on at this stage. The LED will go to RED Press and hold the top button until the LED is flashing ORANGE. With the buttons adjust the reading on the display to match that of the nominal gas applied. You have five seconds to press a button. If you do not press a button in this time the unit will go to normal operations. Take gas off the sensor and allow it to go back to zero. Reapply gas to verify the calibration. Let sensor zero in air and turn off gas cylinders. The LED should be back to GREEN.
