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Page 24 of 61
Sample Mode
This mode, used for standard operation, produces optimum accuracy with the Jerome
®
J405. See
for the accuracy specifications.
•
Press the power
I/O
button. The display will light up and briefly show the instrument serial
number and software revision. If necessary, press
ESC
to clear any calibration reminders.
Next, the digital meter displays 0.00 µg/m
3
. If the battery meter is empty and flashing,
recharge the battery. See the section
•
To ensure the instrument's electronics have stabilized, allow a 5-minute warm up before
beginning the next step.
•
Press the SAMPLE button (located at the end of the handle).
•
At the end of the 16-second cycle, read the digital meter.
The number shown on the digital meter is the me
rcury concentration in μg/m
3
. This
value remains displayed until the next sample is taken. The digital meter
automatically re-zeroes at the start of each sample.
•
When the sensor is completely saturated, the digital meter displays Sensor Regeneration
Required when sampling is attempted. No further operation is possible until a sensor
regeneration is performed. (Refer to the
•
Press the
I/O
button to turn the power OFF when not in use.
Sampling Notes
•
The Jerome
®
J405 is intended for vapor use only.
DO NOT
allow the probe or the
instrument's intake to come in contact with liquids, dust or other foreign material. Moisture or
liquids drawn into the instrument can damage the sensor and flow system.
•
Ensure the instrument has been powered on for at least five (5) minutes prior to sampling.
•
For maximum accuracy, wait 15 seconds between samples to allow the sensor to restabilize.
•
The Jerome
®
J405 operates a minimum of 24 hours on a fully charged battery.
•
Use the probe (AZI P/N: 1400-2002) to locate mercury vapor in hard to reach places. Plug
the probe directly into the instrument's intake.
•
Accessing the menus during sampling can corrupt current sample data, and should be avoided.
