Photosensor Modules
H7827 Series
The H7827 series photosensor modules incorporate a 19-mm (3/4") diameter
head-on photomultiplier tube, a high-voltage power supply circuit and a low
noise amplifier. Two types of amplifiers are available with a current-to-voltage
conversion factor of 1 V/µA or 0.1 V/µA and a frequency bandwidth of DC to
20 kHz or DC to 200 kHz. Two types of photomultiplier tubes with different
spectral response characteristics are provided for measurement in the visible
range or visible to near IR range.
Product Variations
Type No.
Spectral Response Current-to-Voltage Conversion Factor Frequency Bandwidth
Features
H7827-001
H7827-011
H7827-002
H7827-012
300 nm to 650 nm
300 nm to 850 nm
300 nm to 650 nm
300 nm to 850 nm
For general applications in visible range
For visible to near IR range
For general applications in visible range
For visible to near IR range
1 V/µA
DC to 20 kHz
DC to 200 kHz
0.1 V/µA
Specifications
Parameter
H7827 Series
Unit
Suffix
Input Voltage
Max. Input Voltage
-001 / -002
-011 / -012
—
V
V
11.5 to 15.5
18
Max. Input Current
+45/-1 (-001/-011), +50/-8 (-002/-012)
mA
V
V
mm
—
nm
Max. Control Voltage
Recommended Control Voltage Adjustment Range
Effective Area
Sensitivity Adjustment Range
Peak Sensitivity Wavelength
+1.2 (Input Impedance 100 kΩ)
+0.5 to +1.1
15
1: 103
420
60
380
80
120
Min.
Luminous Sensitivity
Typ.
µA/lm
90
Blue Sensitivity Index (CS 5-58)
Red/White Ratio
Radiant Sensitivity *1
Typ.
Typ.
Typ.
10.5
—
85
—
0.2
49
—
—
mA/W
Suffix (with internal 20 kHz amp)
-001
1.0 × 107
5.0 × 107
47
-011
1.0 × 107
3.0 × 107
13
Min.
Luminous Sensitivity *2
V/lm
V/nW
mV
Typ.
Typ.
Typ.
Max.
Radiant Sensitivity *1 *2
Voltage Output Depending
3
20
3
20
on PMT Dark Current *2 *3 *4
Max. Output Signal Voltage
+10 (Load resistance 10 kΩ)
V
V/µA
Current-to-Voltage Conversion Factor
Suffix (with internal 200 kHz amp)
1
-002
1.0 × 106
5.0 × 106
4.7
-012
1.0 × 106
3.0 × 106
1.3
Min.
Luminous Sensitivity *2
Typ.
V/lm
V/nW
mV
Radiant Sensitivity *1 *2
Voltage Output Depending
Typ.
Typ.
Max.
0.3
2
0.3
2
on PMT Dark Current *2 *3 *4
Max. Output Signal Voltage
+10 (Load resistance 10 kΩ)
V
V/µA
Current-to-Voltage Conversion Factor
Offset Voltage Typ.
0.1
H7827 series
3
0.6
0.2
mV
mV
s
°C
°C
g
Ripple Noise *2 *5 (peak to peak) Max.
Settling Time *6
Max.
Operating Ambient Temperature *7
Storage Temperature *7
+5 to +45
-20 to +50
80
Weight
*1: Measured at the peak sensitivity wavelength
*2: Control voltage = +1.0 V
*3: After 30 minutes storage in darkness
*4: Output of anode dark current
*6: The time required for the output to reach a stable level following a change in the control voltage from +1.0 V to +0.5 V
*5: Cable RG-174/U, Cable length 450 mm, Load resistance = 1 MΩ, Load capacitance = 22 pF
*7: No condensation.