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Manual: NGP-1000D-M1/M2/M3
Code
Meaning
Corrective Action
E02
No sensor attached
Open the hand held nitrogen purity analyzer and
disconnect and reconnect sensor. Unit should perform an
auto calibration and should read 79.1%. If not, contact
Customer Service for possible sensor replacement.
E02
No valid calibration data available
Make sure unit has reached thermal equilibrium. Press and
hold the Calibration Button for three seconds to manually
force a new calibration.
E02 or ED4
Battery below minimum operating voltage
Replace batteries.
CAL Err St: O
2
Sensor reading not stable
Wait for displayed nitrogen reading to stabilize, when
calibrating the device at 100% oxygen. Wait for unit to
reach thermal equilibrium (Please note that this can take
up to one half hour, if the device is stored in temperatures
outside the specified operating temperature range).
CAL Err lo
Sensor voltage too low
Press and hold the Calibration Button for three seconds
to manually force a new calibration. If unit repeats this
error more than three times, contact Customer Service for
possible sensor replacement.
CAL Err hi
Sensor voltage too high
Press and hold the Calibration Button for three seconds
to manually force a new calibration. If unit repeats this
error more than three times, contact Customer Service for
possible sensor replacement.
CAL Err Bat
Battery voltage too low to recalibrate
Replace batteries.
Changing the Batteries
When the batteries need to be changed, the device will indicate this in one of two ways:
» The battery icon on the bottom of the display will begin to flash. This icon will continue to flash until the batteries are changed.
The unit will continue to function normally for approx. 200 hours.
» If the device detects a very low battery level, an error code of “E04” will be present on the display, and the unit will not function
until the batteries are changed.
To change the batteries, begin by removing the three screws from the back of the device. A #1 phillips screwdriver is required to
remove these screws.
Once the screws are removed, gently separate the two halves of the device.
The batteries can now be replaced from the back half of the case. Be sure to orient the new batteries as indicated in the embossed
polarity on the back case.
NOTE: If the batteries are installed incorrectly the batteries will not make contact and the device will not operate.
Carefully, bring the two halves of the case together while positioning the wires so they are not pinched between the two case
halves. The gasket separating the halves will be captured on the back case half.
Reinsert the three screws and tighten until the screws are snug.
The device will automatically perform a calibration and begin displaying % of oxygen.
HELPFUL HINT: If unit does not function, verify that the screws are tight to allow proper electrical connection.
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