a2tpmi PerkinElmer, a2tpmi Datasheet - Page 13

• Manufacturer Part Number: a2tpmi
• Description: Thermopile With Integrated Signal Processing Circuit
• Manufacturer: PerkinElmer

A2TPMI Datasheet Rev4
The PCB versions are available with following connector assemblies:
Connection type
4 pin top entry
4 pin side entry
6 pin top entry
6 pin side entry
Contact Material: Phosphor bronze ; tin-plated,
Applicable wire: 0.032 to 0.08mm
Insulation O.D.: 0.5 to 0.9 mm
Note: Engineering samples will be delivered only with a 6 pin header and counterpart connector with
350 mm cable.
OUTPUT LOAD
Capacitive loads which are applied directly to the outputs reduce the loop stability margin. Values of
100 pF can be accommodated. Resistive load for the outputs should be held as small as possible (i.e. a
large load resistance, R
nal due to self heating of the module.
RESPONSE TIME
The response time to an object temperature jump depends on the time constant
the signal processing time of the A2TPMI. The processing of the thermopile signal has a latency time
(t
ing. The following diagram explains the connection of these events
The A2TPMI has a sampling rate of 30 samples / second which results in a resolution of approx. 30ms
for dynamic signals at V
lat
) of max. 75ms caused by the time required for AD-conversion, DA conversion and signal process-
t
load
Tobj
lat
t
.
> 50 kW has to be used) in order to avoid an impact on the temperature sig-
resp
t
2
Figure 2:
63%
JST: B 4B-PH-K-S
JST: S 4B-PH-K-S
JST: B 6B-PH-K-S
JST: S 6B-PH-K-S
Header
Page 13 of 21
response time definition
t
lat
t
Manufacturer: Model No.
resp
Datasheet
t
37%
Contact: SPH-004T-P0.5S
Contact: SPH-004T-P0.5S
A2TPMI
Housing: PHR 4
Housing: PHR 6
T
T
V
V
obj
obj
Connector
Tobj
Tobj
t
1
2
of the thermopile and
2
1
Rev. Oct 2003
Ô