PN 10795T 38
The measured sensitivity should be ± 3 % of the calorimeter’s original sensitivity value.
DETECTOR OPERATION WITHOUT A POWER METER
Pyroelectric Detectors
Standard and SP Models:
Pyroelectric detectors can be operated with a 1MΩ input oscilloscope. The peak voltage shown on the
oscilloscope can be divided by the V/J output sensitivity of the detector to calculate energy.
Vector
™
Calorimeters
Cable Requirements
Vector calorimeters are powered up by the power meter. To use a Vector calorimeter without a Scientech
power meter, but with a volt meter or chart recorder, you must apply +/-8VDC to the mini DIN connector
as shown in Figure 6. The voltage output of the calorimeter, from pin 8, should be connected to the
positive side of the DVM or chart recorder. All 3 of the grounds should be tied together at the negative
side. Pins 2 and 3 are not used.
Figure 6. Calorimeter Output Pin Configuration
When large aperture calorimeters are used without an power meter their interface module is not used. The
output of the calorimeter is connected directly to the DVM or chart recorder. Large aperture calorimeters
do not require any power. The voltage output is on pin 1 of the DIN connector and should be connected
to the positive side of the DVM or chart recorder. Ground is on pin 3 and should be connected to the
negative side. Pin 2 is not used. Refer to Figure 5.
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