Campbell 21X Especificaciones descargar pdf (Pagina 15)

Number 4250-2000

Revision 1.0

Date MAY 1996

Page 6 of 7

Documentation Form. The correct reading for each port is shown,

along with the manufacturers' specified accuracy, on the Campbell

21X Datalogger Servicing Documentation Form.

If the datalogger readings for either CAO port differ from the

specified values by more than ± 5.0 millivolts, return the datalogger

to Campbell Scientific for recalibration.

4.4 PULSE COUNTER CHECK

CONNECT Connect the waveform generator to pulse input channel #1.

GENERATOR TO

FREQUENCY

COUNTER

SETUP Setup the waveform generator for a square wave output with a

WAVEFORM frequency of 1000 Hz and an amplitude of 1 volt(rms).

GENERATOR

RECORD The test program will count pulses from the waveform generator

COUNTS for a period of 10 seconds. Record the number of counts in the

pulse counter channel at storage location 09 ( press

*6 9

on the

datalogger). Based on an input frequency of 1000 Hz, a datalogger

count of 10,000 should be displayed.

If the datalogger reading for the pulse counter channel differs from

the specified value by more than ± 5 counts, return the datalogger to

Campbell Scientific for recalibration.

4.5 PANEL TEMPERATURE CHECK

RECORD Read the ambient temperature in the laboratory with the laboratory

AMBIENT reference thermometer. Record this temperature (

C) on the

TEMPERATURE Campbell 21X Datalogger Servicing Documentation Form (Figure

4-1).

RECORD Read the datalogger panel temperature at storage location 10 (press

PANEL

*6 10

on the datalogger) and record the reading on the Campbell

TEMPERATURE 21X Datalogger Servicing Documentation Form.

If the datalogger panel temperature measurement differs from the

laboratory reference thermometer reading by more than ± 1.7

return the datalogger to Campbell Scientific for recalibration.

4.6 INTERNAL BATTERY SERVICING

RECORD Read the internal battery voltage at storage location 11 (press

*6 11

BATTERY on the datalogger). Record this reading on the Campbell 21X

VOLTAGE Datalogger Servicing Documentation Form.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 55 56

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