Temperature (TMP)
User Manual
5 of 16
1.3.
Sensor Specifications
> Range:
0°C −50°C
> Response Time (Air):
15 ± 1
seconds
> Type:
NTC thermistor
> Element Diameter:
1.90
± 0.01
mm
1.4.
Features
>
Medical-grade PVC insulation
>
Unobtrusive & lightweight sensor
>
Short response times
>
Pre-conditioned analog output
>
High signal-to-noise ratio
>
Ready-to-use form factor
>
Medical-grade raw data output
1.5.
Applications
>
Life sciences studies
>
Biomedical research
>
Human-Computer Interaction
>
Robotics & Cibernetics
>
Physiology Studies
>
Psychophysiology
1.6.
Transfer Function (Conversion Formula)
The analog sensor signals acquired with
biosignalsplux
devices are converted into digital values ranged
between 0 and 2
n
-1 (
n=sampling resolution
, usually 8-bit or 16-bit) and streamed in the raw digital
format.
In most applications, the original physical unit of the acquired
TMP
signal is preferred or required. The
raw digital sensor samples can be converted back into Celsius degrees (ºC) using the following
formulas:
𝑁𝑇𝐶(𝑉) =
𝐴𝐷𝐶 ∙ 𝑉𝐶𝐶
2
𝑛
(1)
𝑁𝑇𝐶(𝑚𝑉) = 𝑁𝑇𝐶(𝑉) × 1000
(2)
𝑁𝑇𝐶(𝛺) =
1 × 10
4
∙ 𝑁𝑇𝐶(𝑉)
𝑉𝐶𝐶 − 𝑁𝑇𝐶(𝑉)
(3)
𝑇𝑀𝑃(𝐾) =
1
𝑎
0
+ 𝑎
1
∙ ln(𝑁𝑇𝐶(𝛺)) + 𝑎
2
∙ [ln(𝑁𝑇𝐶(𝛺))]
3
(4)
𝑇𝑀𝑃(˚𝐶) = 𝑇𝑀𝑃(𝐾) − 273.15
(5)
Valid sensor range:
[
0˚C
,
50˚C
]
with:
𝑁𝑇𝐶(𝑉)
NTC output in Volt (V)
𝑁𝑇𝐶(𝑚𝑉)
NTC output in millivolt (mV)
𝑁𝑇𝐶(𝛺)
NTC output in Ohm (
𝛺
)
𝑇𝑀𝑃(𝐾)
Temperature value in Kelvin (K)
𝑇𝑀𝑃(˚𝐶)
Temperature value in degrees Celsius (
˚𝐶
)
𝐴𝐷𝐶
Value samples from the sensor/channel (digital value)
𝑛
Sampling resolution (
default:
16-bit resolution (n=16), although 12-bit and 8-
bit may also be found)
