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CH451-01

CH451-01 photon counting detector is composed of head-on PMT, high voltage power supply module, comparison and shaping circuit. The detector is equipped with a cooler and controlled by a temperature controller to reduce the thermal noise of the PMT, so that it still has a good signal-to-noise ratio for very weak light measurement; It can be applied to weak light luminescence analysis in biology, medicine, chemistry, environment and other fields. This product outputs standard TTL signal, which is convenient for data processing. Before leaving the factory, each parameter has been preset as the optimal value, and the user can use it by simply connecting according to the instructions.

Specifications

Model

CH451-01

Input voltage of main unit (V)

+11.5 ～ +12.5

Maximum input current of main unit (mA)

Input voltage of temperature controller (V)

+11.5 ～ +12.5

Maximum input current of temperature controller (A)

Effective area (mm)

φ22

Spectral response (nm)

300 ～ 650

Count sensitivity Typ. 300nm (s^-1 ·pW ^-1)

9.4×10⁴

Count sensitivity Typ. 400nm (s^-1 ·pW ^-1)

3.9×10⁵

Count sensitivity Typ. 500nm (s^-1 ·pW ^-1)

3.1×10⁵

Count sensitivity Typ. 600nm (s^-1 ·pW ^-1)

8.2×10⁴

Maximum linear counting rate ¹⁾ (s ^-1 )

6×10⁶

Dark counting ²⁾Typ. (s^-1)

Dark counting ²⁾ Max. (s^-1)

Consistency ( Relative deviation )³⁾ Max.

±10%

Operating instability for 8 hours⁴⁾ Typ.

Signal output logic

Positive TTL

Output pulse height ⁴⁾ Min. (V)

2.0

Output pulse height ⁴⁾Typ. (V)

2.2

Output pulse width (ns)

Pulse pair resolution (ns)

Recommended load (Ω)

Operating ambient temperature/humidity ⁶⁾

+5 ～ +40/≤90%RH

Storage temperature/humidity ⁶⁾

-20 ～ +50/≤93%RH

Weight (g)

1200

1) Random pulse, 10% count loss;

2) Protect from light for 30 minutes;

3) Measured at wavelength of 430nm;

4) Detector output counting rate is approx. 20ks^-1;

5) Load 50Ω, coaxial cable RG-174/U ;

6) No condensation.

CH451-01

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