Hamamatsu Photomultiplier Tube R9182-01

Overview

The Hamamatsu Photomultiplier Tube R9182-01 is a thermoelectrically cooled, side-window photomultiplier tube engineered for high-sensitivity, low-noise ultraviolet-to-near-infrared photon detection in demanding environmental monitoring and analytical instrumentation applications. Designed around a multi-alkali (S-20) photocathode deposited on borosilicate glass, the R9182-01 delivers broad spectral responsivity from 185 nm to 900 nm—enabling reliable detection of weak UV emissions from trace gas chemiluminescence, ozone photolysis, NO₂ fluorescence, and hydrocarbon oxidation byproducts. Its 10 × 24 mm effective photosensitive area and rectangular 8 × 24 mm photocathode geometry optimize light collection efficiency in compact optical path configurations typical of portable or fixed-site gas analyzers. The integrated Peltier cooler reduces thermal noise significantly, stabilizing dark current performance over extended operational periods—a critical requirement for continuous-emission monitoring (CEM) systems operating under variable ambient conditions.

Key Features

• Thermoelectric (Peltier) cooling system enabling stable operation at –20 °C base temperature, suppressing thermionic emission and enhancing signal-to-noise ratio in low-light detection scenarios.
• Multi-alkali (S-20) photocathode with high quantum efficiency across the deep UV (185 nm) to visible/NIR (900 nm) range—ideal for broadband spectroscopic gas analysis and UV absorption-based ozone or SO₂ monitors.
• Side-window configuration with 28 mm diameter envelope facilitates integration into space-constrained optical benches and modular gas sensor housings.
• High gain (9.5 × 10⁶ typ.) and fast temporal response—2.2 ns rise time and 22 ns transit time—support time-resolved measurements such as pulsed-laser-induced fluorescence (PLIF) or gated photon counting in real-time gas diagnostics.
• Low dark current specification: ≤0.3 nA (typ.) and ≤1 nA (max.) after 30-minute thermal stabilization—ensuring baseline stability required for regulatory-grade compliance measurements per EPA Method 40 CFR Part 60 and EN 14181.

Sample Compatibility & Compliance

The R9182-01 is compatible with gaseous sample matrices requiring photon-counting or analog current-mode detection of weak luminescent or absorbance-derived signals. It is routinely deployed in OEM gas analyzers measuring NO, NO₂, O₃, SO₂, and VOCs via chemiluminescence, fluorescence, or UV absorption techniques. Its hermetically sealed, metal-ceramic construction meets IP65-equivalent ingress protection when integrated into instrument enclosures compliant with IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emission) standards. The device conforms to RoHS Directive 2011/65/EU and supports GLP/GMP-aligned calibration traceability when used in validated analytical platforms.

Software & Data Management

While the R9182-01 operates as an analog current-output transducer, its integration into modern environmental monitoring systems leverages standardized signal conditioning architectures. When paired with Hamamatsu’s C12701-series high-voltage power supplies and C11204 digitizers, it enables full digital acquisition with 16-bit resolution, programmable gain control, and timestamped event logging. Raw anode current data can be streamed via USB or Ethernet interfaces into SCADA-compatible middleware (e.g., Ignition, LabVIEW DSC, or custom OPC UA servers), supporting audit-trail generation per FDA 21 CFR Part 11 requirements when deployed in regulated industrial hygiene or stack emission monitoring environments.

Applications

• Continuous Emission Monitoring Systems (CEMS) for NOₓ and SO₂ using chemiluminescence detection.
• Ozone (O₃) analyzers based on UV absorption at 254 nm with dual-beam referencing.
• Portable VOC detectors employing photoionization (PID) or fluorescence excitation at 220–280 nm.
• Flame ionization detector (FID) signal amplification in gas chromatography–gas detection hybrids.
• UV spectrophotometric water quality sensors for nitrate/nitrite quantification in ambient air or aqueous effluent streams.

FAQ

Is the R9182-01 suitable for outdoor deployment in uncontrolled temperature environments?
Yes—when integrated with appropriate thermal management (e.g., insulated housing + active temperature feedback loop), its Peltier-cooled architecture maintains stable dark current and gain characteristics across –10 °C to +50 °C ambient ranges.
What high-voltage supply is recommended for optimal linearity and longevity?
Hamamatsu recommends the C12701-01 or equivalent 0–1200 V adjustable supply with ripple <0.01% and temperature coefficient <50 ppm/°C to preserve gain stability over 12-month calibration intervals.
Does this PMT require magnetic shielding in industrial settings?
Yes—its electron multiplier structure is sensitive to stray magnetic fields; use of Mu-metal shielding (≥2 mm thickness) is advised near motors, transformers, or switching power supplies.
Can the R9182-01 be operated in photon-counting mode?
Yes—its low dark current and sub-nanosecond timing resolution support single-photon counting when coupled with a fast discriminator (e.g., ORTEC 9302) and time-correlated single-photon counting (TCSPC) electronics.
Is NIST-traceable calibration available for this model?
Hamamatsu provides factory spectral responsivity calibration (NIST-traceable irradiance standard) upon request; users must specify wavelength points (e.g., 254 nm, 546 nm) and operating voltage during order placement.