Atomfair PMT-721 Photomultiplier Tube Characteristic Tester
Product Overview
The Atomfair PMT-721 is a high-performance optoelectronic device characteristic testing instrument dedicated to researching and measuring the key fundamental properties of photomultiplier tubes (PMTs). It integrates comprehensive testing functions and precise measurement capabilities, making it an essential tool for professionals engaged in optoelectronic research, laboratory experiments, and related technical fields. With its user-friendly design and reliable performance, it enables users to master the measurement methods of PMT basic parameters efficiently.
Core Functions & Experimental Capabilities
1. Key Research Characteristics
This tester allows in-depth exploration of various critical properties of photomultiplier tubes, including:
Dark current
Cathode sensitivity
Anode sensitivity
Amplification factor (gain)
Photoelectric characteristics
Volt-ampere characteristics
Time characteristics
Spectral characteristics
2. Main Experimental Contents
It supports a wide range of experimental operations to meet diverse testing needs:
Familiarize with the basic characteristic principles of photomultiplier tubes
Cathode photoelectric characteristic test experiment of photomultiplier tubes
Dark current measurement experiment
Cathode sensitivity measurement experiment
Anode sensitivity measurement experiment
Practical operation of PMT basic parameter measurement methods
Anode photoelectric characteristic test experiment of photomultiplier tubes
Cathode volt-ampere characteristic test experiment of photomultiplier tubes
Anode volt-ampere characteristic test experiment of photomultiplier tubes
Time characteristic test experiment of photomultiplier tubes
Spectral characteristic test experiment of photomultiplier tubes
Detailed Specifications & Technical Parameters
1. Instrument Main Unit
External Features
Chassis dimensions: 514mm × 314mm × 140mm
Weight: ≤ 4Kg
Photomultiplier Tube Core Parameters
Spectral response range: 300~700nm
Peak response wavelength: 420nm
Photocathode: Standard photocathode configuration
Minimum effective cathode size: 1mm
Side tube window material: Glass
System structure: Window box type (graded design)
Anode pulse rise time: 7.0ns
Electron transit time: 70ns
Voltage between anode and cathode: 1200Vdc
Average anode current: 0.1mA
Cathode sensitivity: 100μA/lm
Anode sensitivity: 10A/lm
High-Voltage Power Supply Parameters
Adjustment range: 0 ~ Rated output value
Output type: +1 gear adjustable output
Temperature coefficient: 0.03%
Control precision: 10 levels
Warm-up time: 0min
Operating temperature: 0°C~+40°C
Voltmeter
Measurement range: 4 gears switchable (0~200mV, 0~20V, 0~200V, 0~2000V)
Measurement accuracy: 0.2%
Display mode: 3.5-digit display
Ammeter
Measurement range: 4 gears switchable (0~200μA, 0~2mA, 0~20mA, 0~200mA)
Measurement accuracy: nA level
Minimum measurable dark current: ~10nA
Display mode: 4-digit display
2. Light Source System
White light: Brightness 1000-2500 (standard brightness unit)
Red light: Wavelength 625nm~630nm
Orange light: Wavelength 600nm~605nm
Yellow light: Wavelength 585nm~590nm
Green light: Wavelength 515nm~520nm
Blue light: Wavelength 460nm~465nm
Violet light: Wavelength 400nm~405nm
3. Illuminance Meter
Resolution: 0.1lx
Measurement range: 4 gears switchable (200Lux, 2000Lux, 20000Lux, 50000Lux)
Display mode: 1999-digit digital LCD screen with low battery indicator
Reading rules: Reading ×10 under 2000Lux range; Reading ×100 under 50000Lux range
Measurement accuracy: ±5% rdg ±10gdts (≤10,000Lux); ±10% rdg ±10gdts (>10,000Lux) (calibrated under 2856K white light)
Dimensions: 65mm × 188mm × 25mm
Sampling rate: 1.5 times/second
Linearity: +2%
Notes
The configuration and parameters of this product are for reference only. The final specifications are subject to the product packing list. Minor changes will not be notified separately.
If you’re interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.
What is the minimum measurable dark current of the PMT-721 and what measurement accuracy does it provide?
The PMT-721 can measure dark current down to approximately 10 nA with nA-level accuracy. The built-in ammeter has four switchable ranges (0–200 µA, 0–2 mA, 0–20 mA, 0–200 mA) and a 4-digit display, enabling precise quantification of the photomultiplier tube's dark current, a critical parameter for low-light applications.
What spectral testing capabilities does the PMT-721's integrated light source system offer?
The PMT-721 includes a light source system with white light (brightness 1000–2500) and six monochromatic LEDs: red (625–630 nm), orange (600–605 nm), yellow (585–590 nm), green (515–520 nm), blue (460–465 nm), and violet (400–405 nm). These discrete wavelengths correspond to the instrument's 300–700 nm spectral response range and support spectral characteristic experiments on photomultiplier tubes.
Does the PMT-721 require a warm-up period before measurements, and what are its high-voltage and environmental specifications?
No, the PMT-721 has a warm-up time of 0 minutes and is ready for immediate use. The internal high-voltage power supply is adjustable from 0 V to the rated 1200 Vdc with a temperature coefficient of 0.03% and 10-level control precision. The instrument operates reliably at 0°C to +40°C, ensuring stable performance in standard laboratory environments.
The Atomfair PMT-721 integrates a 0–1200 Vdc graded PMT socket assembly with a 7.0 ns anode rise time and nA-level dark current measurement capability, enabling direct characterization of gain, sensitivity, and spectral response across 300–700 nm. Its multi-gear voltmeter/ammeter and calibrated LED light source (400–630 nm) support repeatable photoelectric and volt-ampere experiments, though the 10 nA dark current floor and ±5% illuminance accuracy impose limits for ultra-low-light or high-precision metrology applications.
Positive
- Integrated PMT characterization suite: Combines dark current, cathode/anode sensitivity, gain, photoelectric, volt-ampere, time, and spectral characteristic measurements in a single benchtop unit, eliminating the need for separate test setups and simplifying experimental workflows.
- High-speed and low-light measurement capability: With a 7.0 ns anode pulse rise time and nA-level ammeter resolution (minimum measurable dark current ~10 nA), the tester supports time-response and low-signal PMT evaluations essential for photonics research.
Trade-offs
- Limited dark current measurement floor: The ammeter's minimum measurable dark current is ~10 nA, which may not resolve the lower dark currents of high-gain PMTs, potentially masking true baseline performance in ultra-sensitive applications.
- Illuminance accuracy constraints: The illuminance meter's accuracy is ±5% rdg ±10 dgts below 10,000 Lux and ±10% rdg ±10 dgts above, calibrated under 2856K white light, which may introduce systematic errors when using non-standard light sources or at higher illumination levels.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
