Datasheet

Thermopile detector
T11722-01
For CO2 concentration measurement, High sensitivity
The T11722-01 is a dual-element type thermopile detector designed to detect CO2 concentration with high accuracy. It
consists of a high sensitivity dual-element thermopile detector and two band-pass filters for sensing two wavelengths
(reference: 3.9 μm, CO2: 4.3 μm) simultaneously.
Features
Applications
2 wavelengths detection
(Reference: 3.9 μm, CO2: 4.3 μm)
CO2 concentration measurement
Metal package (TO-5)
High sensitivity
Absolute maximum ratings
Parameter
Symbol
Value
Unit
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-40 to +125
°C
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
Electrical and optical characterisitics (Ta=25 °C)
Parameter
Photosensitive area
(per 1 element)
Spectral response range
Photosensitivity*1
Element resistance
Noise voltage
Noise equivalent power*1
Detectivity*1
Rise time
Temperature coefficient of
element resistance
Symbol
λ
S
Rd
Vn
NEP
D*
tr
TCR
Condition
Absorption layer size
Band-pass filter,
center wavelength
(FWHM)
1 Hz, 500 K
Johnson noise
0 to 63%
Min.
Typ.
Max.
Unit
-
1.2 × 1.2
-
mm
-
For reference: 3.9 (0.09)
For CO2: 4.3 (0.14)
-
μm
40
100
0.9 × 108
-
50
125
45
0.9
1.3 × 108
20
60
150
50
1.3
30
V/W
kΩ
nV/Hz1/2
nW/Hz1/2
cm∙Hz1/2/W
ms
-
±0.1
-
%/°C
*1: Without filter
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1
Thermopile detector
T11722-01
Spectral transmittance characteristics of
window material (typical example)
Field of view
100
90
X
Transmittance (%)
80
X’
70
Filter 1
Filter 2
Filter 1
98˚
98˚
Filter 2
60
50
40
30
20
10
0
3.0
3.5
4.0
4.5
5.0
Wavelength (μm)
KIRDB0508EA
KIRDC0103EA
Operating circuits
Single power supply type
+V
3
2
+V
8
+
1
-
Vout
4
Thermopile
R3
R1
R2
C1
R4
Gain=1 + R2/R1
fhigh=1/(2πC1R2)
R3=R4
Since the thermopile output signal is very low in the order of microvolts, use an amplifier with a low offset
voltage. (Example: LTC1050)
KIRDC0104EA
2
Thermopile detector
T11722-01
Dual power supply type
+V
3
2
8
+
1
-
Vout
4
Thermopile
-V
R2
R1
C1
Gain=1 + R2/R1
fhigh=1/(2πC1R2)
KIRDC0105EA
Dimensional outline (unit: mm)
8.3 ± 0.2
Thermopile 1 (1.2 × 1.2)
2.5 ± 0.1
Thermopile 2 (1.2 × 1.2)
Filter 2
Pin
Thermopile 2
Thermopile 1
Filter 1
13.2 ± 0.5
1.7 ± 0.1
3.4 ± 0.2
2.8 ± 0.2
9.15 ± 0.2
Window
2.5 ± 0.1
T2
0.45 ± 0.05
T1
Common
Case
ϕ5.08 ± 0.2
10.0 ± 0.2
0.8 ± 0.1
45°
Filter1: For reference (3.9 μm)
Filter2: For CO2 (4.3 μm)
0.8 ± 0.1
KIRDA0222EB
3
Thermopile detector
T11722-01
Precautions
The band-pass filters used in this product have a secondary transmission at wavelengths longer than 10 μm. If the secondary
transmission affects measurements, install a sapphire glass, etc. in front of the light input window to block long wavelength light.
Related information
www.hamamatsu.com/sp/ssd/doc_en.html
Precautions
∙ Notice
∙ Metal, Ceramic, Plastic package products/Precautions
Information described in this material is current as of October, 2013.
Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the
information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always
contact us for the delivery specification sheet to check the latest specifications.
Type numbers of products listed in the delivery specification sheets or supplied as samples may have a suffix "(X)" which means preliminary specifications or
a suffix "(Z)" which means developmental specifications.
The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that
one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product
use.
Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission.
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HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 8152-375-0, Fax: (49) 8152-265-8
France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Thorshamnsgatan 35 16440 Kista, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1 int. 6, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
China: Hamamatsu Photonics (China) Co., Ltd.: 1201 Tower B, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866
Cat. No. KIRD1120E02 Oct. 2013 DN
4
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