27M2

Nine-stage visible-response photoelectric multiplier designed for very low light levels, light-operated relays, and sensitive photometric applications. Its cascaded multiplication stages provide substantial gain from weak visible-light signals.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: 11
Nominal heater: -

Description

Nine-stage visible-response photoelectric multiplier for very low light levels, light-operated relays and other sensitive photometric applications.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 11
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 0

Photomultiplier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1961 AEI Industrial Valves

Published operating points and test conditions from this source.

SECTION 0

Photomultiplier

Other

Maximum Anode Supply Voltage
900 V
MaximumAnodeToLastDynodeVoltage
100 V
Maximum Anode Current
1 mA
TypicalAnodeToLastDynodeVoltage
50 V
TypicalVoltagePerStage
80 V
LuminousSensitivity
2 A/lm
CurrentAmplification
250000

Characteristic

PhotocathodeSensitivity
10 uA/lm
TungstenLamp2700K
MaximumAnodeDarkCurrent
0.25 uA

Capacitance

AnodeToAllOtherElectrodesCapacitance
6 pF
AnodeToLastDynodeCapacitance
4 pF

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 0

Photomultiplier

Other

Maximum Anode Supply Voltage
900 V
MaximumAnodeToLastDynodeVoltage
100 V
Maximum Anode Current
1 mA
TypicalAnodeToLastDynodeVoltage
50 V
TypicalVoltagePerStage
80 V
LuminousSensitivity
2 A/lm
CurrentAmplification
250000

Characteristic

PhotocathodeSensitivity
10 uA/lm
TungstenLamp2700K
MaximumAnodeDarkCurrent
0.25 uA

Capacitance

AnodeToAllOtherElectrodesCapacitance
6 pF
AnodeToLastDynodeCapacitance
4 pF