Model 11-R
GRIMM AEROSOL TECHNIK GmbH & Co.KG Seite 71 von 83
C0_d is determined with the laser turned off and d therefore stands for “dark”. If a value not equal to
zero is listed under C0_d, this indicates a problem with the signal amplifier. Since no scattered light can
be produced without laser light, this has to be caused by electronic interference. This indicates a signal
amplifier error.
DC/v DC_d DC_h c0_h c0_d La_i la_h
K 665 1292 1654 0 0 59 105
the laser diode in a GRIMM aerosol spectrometer is operated with two alternating laser outputs in what
is known as multiplex mode. La_l “low” means low laser current in mA and La_h “high” means high laser
current. If the La_h current increases to values greater than 180 mA, the laser diode is probably defec-
tive.
All devices include a quality assurance acceptance record containing the K-line values from factory
calibration by the manufacturer for comparative purposes.
6.5 Repair
Knowing that defective or inactive devices are costly for the customer, the GRIMM policy is to resolve
customer problems as quickly as possible. When a device stops working, please contact the nearest
GRIMM sales office or dealer as soon as possible.
Please contact the GRIMM service department by e-mail before you send one of our devices back for
service:
service@grimm-aerosol.com
Kindly provide the following information:
Device model (number)
Serial number and year of manufacture (on the type plate, underside of the device)
Order date and your order number (except for warranty cases)
Your billing address
Your shipping address
Prior to shipment, make sure each the device is free of any contamination that could be
hazardous to health.
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