TIF ZX Heated Pentode Refrigerant Detector - Manual (Page 10)

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The standard beeping tone is also an indication of sensitivity level .
- In HIGH sensitivity the unit emits two quick beeps approximately once every two (2)
seconds, in fresh air .
- In LOW sensitivity the unit emits only one beep, approximately once every two (2)
seconds, in fresh air .
sensor status indicator
The unit’s circuit has the ability to automatically diagnose and indicate the sensor’s
status . Whenever the unit is energized, the circuit automatically senses the condition
of the sensor and can detect a failed or missing sensor .
Old Sensor Indication: As the sensor ages, the circuit will note and indicate this to the
user . Initially, an Old Sensor Indication is displayed by flashing the Constant Power
Indicator . If this indication appears, it is time to obtain a replacement sensor . Refer to
the Replacement Parts section . However, it is not necessary to replace the sensor
before the Failed Sensor Indication is received .
Failed Sensor Indication: If the circuit detects a failed or missing sensor, the 2nd
through 6th LEDs turn red and flash quickly . The 1st LED continues to display the
battery status as described earlier . Additionally, the internal pump shuts down to
prevent unnecessary battery drain . If this indication appears, refer to the Maintenance
section for service instructions .
audible / Visual alarms – Mute feature
The unit features two primary alarm indications – an internal speaker that produces a
multiple frequency tone, and a series of tri-color LEDs that provide an incremental
indication of leak detection and proportional leak size .
You may choose to activate both the audible and visual alarms, or use only the visual
alarm . Upon power-on, the unit will activate both . If you wish to cancel or “mute” the
audible alarm, press the Alarm Key .
This mutes the internal speaker, and detection will be indicated solely by the LED
display . Press the Alarm Key again, at any time, to reactivate the internal speaker .
The LEDs provide a tri-color, proportional indication of leak intensity . The 2nd through
6th LEDs are used for this indication, while the 1st LED always remains an indication
of battery strength . See Figure 5 .