ScienTECH Vector Series - OPERATION OF VECTORM AND LARGE APERTURE CALORIMETERS WITH AN ANALOG RECORDER

PN 10795T 39
OPERATION OF VECTOR AND LARGE APERTURE CALORIMETERS WITH A
DIGITAL VOLT METER
Note: Whenever a large aperture calorimeter is used without a power meter the interface module is not
used.
The calorimeters may be used with any digital volt meter (DVM) capable of reading 5 volts full scale.
A. Connect the output of the calorimeter to the DVM.
B. Select the DC volts mode.
C. Direct the laser beam on to the absorbing surface of the calorimeter.
D. When the display of the DVM has stabilized (about 2 minutes), calculate the laser power using the
formula:
W = V/S
where:
W = Laser power in watts
V = Voltage reading of the DVM in volts
S = Sensitivity of the calorimeter
OPERATION OF VECTOR AND LARGE APERTURE CALORIMETERS WITH
AN
ANALOG RECORDER
Note: Whenever a large aperture calorimeter is used without an indicator the interface module is not
used.
Calorimeter Response:
The response of a calorimeter to a single pulse input as displayed by a chart recorder appears below.