User Instructions
14
The 4-20 mA signal can be used for troubleshooting:
0 mA is most likely a connection problem
4-20 mA is normal gas reading range (0-50 ppm)
24 mA indicates a Trouble condition
Error Codes
t01 Sensor is missing
t02 Temperature compensation failed
t04 Bad EEPROM checksum
t10 Bad EEPROM
t20 Bad calibration
t40 Factory calibration was not done
t80 ADC reading failed
t100 Under range sensor
t200 Sensor warranty expired
NOTE: For trouble codes over 080 the display will alternate between t_1 and t00 for t100 and between t_2 and t00 for t200.
If the error mode repeats frequently, check for continuous power and proper voltage. If power is not the problem and a unit has
repeating error conditions, it may need to be returned to Macurco for service, per these User Instructions.
If the error mode indicates “Sensor warranty expired” see the Sensor Replacement section of these User Instructions.
Sensor Poisons
The gas sensor in the detector is designed with extreme sensitivity to the environment. As a result, the sensing function may be
deteriorated if it is exposed to a direct spray from aerosols such as paints, silicone vapors, etc., or to a high density of corrosive gases
(such as hydrogen sulfide, sulfur dioxide) for an extended period of time.
MAINTENANCE
The TX-6-HS requires periodic maintenance. The unit uses an electrochemical sensor with a 2-3 year life expectancy that can be
tested, calibrated and replaced in the field. The TX-6-HS replacement sensor is available through your local representative or from
Macurco. All other maintenance and repair of products manufactured by Macurco are to be performed at the appropriate Macurco
manufacturing facility. Macurco does not sanction any third-party repair facilities.
End-of-Warranty Signal
Two years after the TX-6-HS is installed the sensor end-of-warranty signal will be activated indicating that the TX-6-HS sensor has
reached the end of its warranty period. The end-of-warranty signal will cause an error code t200 “Sensor warranty expired”. See Error