Teledyne 2240 – Portable Handheld Hydrogen Leak Detector, 2nd generation - Manual (Page 7)

Page 13 of 26 M2240 R0
• Remove Sensor Module by pressing and holding down the
release tab located on the back on the Wand Assembly
Receiver and firmly pulling Sensor Module out.
Page 14 of 26 M2240 R0
5. 2240 Operation
To power-up the
2240, depress and hold the Power
Button for approximately 1 second until the unit LED’s
illuminate. The instrument is pre-set and calibrated by the
manufacturer and will automatically enter the Initialization
Mode.
To power-down the
2240, depress and hold the power
button for approximately 2 seconds until the LED’s turn-off.
Note: The 2240 sensing element is sensitive to changes
in light intensity. If operation in changing light environments
produces erroneous indications follow the instructions for
resetting the unit.
Modes of Operation
Initialization Mode – A warm-up/self-analysis mode that
occurs automatically after power is turned on. It lasts
approximately five minutes. The LCD displays a countdown
to completion of the Initialization Mode.
Note: the LCD displays “Warm-up” and the LED is
yellow, indicating a non-operating state.
During this time the system brings the Wide Range Sensor®
to operating temperature, stabilizes system components, and
performs a self-test. Upon completion, the system produces
three audible beeps then automatically switches to Run
Mode.
Run Mode – Measures and reports hydrogen concentration
in the air using the LCD, LED's, and Beeper. The user can
select several display modes for the LCD during operation:
• Pressing the UP button will display the peak hydrogen
reading.
• Pressing the DOWN button will display the current percent
hydrogen concentration.
• Pressing the ENTER button will clear the peak hydrogen
value.