|
  Preamplifiers for
Pyroelectric Detectors
To make the lowest level pulsed energy measurements, a
preamplifier can be connected between the pyroelectric sensor head and the
LEM2410 readout.
By adding a pre-amplifier to a pyroelectric sensor head the
sensitivity of the measurements can be improved. Energy levels down to 100 nJ
are possible when used with the PEM
4 sensor. The bandwidth of the amplifier is specifically designed to match
the pyroelectric sensor heads and the reduction in capacitive load due to the
interconnecting cables greatly improves the sensitivity of the system.
Gain is set during manufacture and should be specified by the
customer when ordering. A choice of two gains is available with the Model VST2N
as this part includes a gain select switch.
By including a preamplifier in your system, the dynamic range of
possible measurements is maximised. This range also allows losses of
sensitivity due to small load resistors, used to increase repetition rates, to
be compensated for.
|
Part Number |
VST1N |
VST2N |
|
Connectors |
BNC |
|
Gain |
10, 100 or 1000 |
10 & 100
or
100 &
1000 |
|
Input Impedance |
1 M Ohm |
|
Cord Length |
3 m |
|
Power Supply
(included) |
±15 V |
 Isolation Kit
The use of this kit with PEM
30K-VUV is recommended to reduce mechanical vibrations and to prevent
ground loops. The kit includes:
|
Chain Clamp |
|
Thrust ring made of UV-resisting plastic |
|
Viton-0-ring |
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