PM1604 A

PM1604 B

Detector

GM tube

GM tube

Dose Rate display

0.01 μSv/h - 6.50 Sv/h 
(1 μR/h - 650 R/h), Hp(10)

0.01 μSv/h - 13.0 Sv/h
(1 μR/h -1300R/h), H*(10)

Dose Rate Accuracy 
(H – dose rate, μSv/h)

± (15 + 0.02/H + 0.003H) % 
(in range 1 μSv/h - 5.0 Sv/h)

± (15 + 0.02/H + 0.002H) %
(in range 1 μSv/h - 10.0 Sv/h)

Dose measurement

0.01 μSv - 9.99 Sv
(1 mR - 999 R)

0.01 μSv - 9.99 Sv
(1 mR - 999 R)

Dose Accuracy

± 15% (in range 1 μSv - 9.99 Sv 
(100 μR - 999 R))

± 15% (in range 1 μSv - 9.99 Sv
(100 μR - 999 R))

Energy range

0.048 - 6 MeV

0.048 - 6 MeV

Energy response relative to 0.662 MeV 
(Cs-137)

± 30% (in range 0.048 MeV - 3 MeV); 
± 50% (in range 3.0 MeV - 6 MeV)

± 30% (in range 0.048 MeV - 3 MeV);
± 50% (in range 3.0 MeV - 6MeV)

Survive after momentary influence of maximum 
permissible gamma radiation within 5 min:

50 Sv/h
(5000 R/h)

100 Sv/h
(10000 R/h)

Standards compliance

meets most relevalnt parts of 
ANSI N42.20 and IEC 61526 standards

meets most relevalnt parts of
ANSI N42.20 and IEC 61526 standards

Alarm type:

audio

audio

Physical Parameters

Dimensions

50 x 90 x 19 mm 
(2'' x 3½'' x ¾'')

50 x 90 x 19 mm
(2'' x 3½'' x ¾'')

Weight

85 g (3 oz)

85 g (3 oz)

Environmental Characteristics

Temperature

-20 up to +70 °C
(from -4 up to +158 °F)

-20 up to +70 °C
(from -4 up to +158 °F)

Humidity

up to 98% at 35°C (95°F)

up to 98% at 35°C (95°F)

Environmental protection

Drop test

1.5 m (4.9 ft)

1.5 m (4.9 ft)

Water resistant

1 m ( up to 3.3 ft)

1 m ( up to 3.3 ft)

Power

Batteries

one CR 2032 lithium battery

one CR 2032 lithium battery

Battery lifetime

9 months

9 months

Battery discharge control

Pictogram on LCD

Pictogram on LCD

Additional

Countdown timer

yes

yes

Display of time to critical exposure

Functions

minutes, hours, day of the week,
date, month, year

minutes, hours, day of the week,
date, month, year

Calendar mode

alarm clock, timer, stop watch

alarm clock, timer, stop watch

PC Communication

IRDA

IRDA