Highlights

General

  • Measurement of the dose rate 
  • Monitoring radiation exposure and ensuring an acceptable limit value
  • Display of immediate changes in the gamma radiation field
  • Type-approved by the PTB

Features

  • Adjustable proportional mode and ionization chamber mode 
  • Special radioactive control device for performance control of the probe
  • Comparison between measured value and reference value with deviation information
     

Measuring

  • Measurement in continuous or pulsed gamma fields
  • Equivalent doses and dose rates H*(10) in an energy range from 15 keV to 7 MeV
  • Accurate determination of the received dose

Product Overview

Technical Data

LB 135 TOL/G 

Ident no. 72320

Type

H*(10) gamma dose rate monitor

Energy range

15 keV to 7000 keV

Dose range

Low dose: 10 nSv to 10 mSv (measuring range)

         0,1 µSv to 10 mSv (according to PTB-A 23.3, 11/2013)

High dose: 50 μSv to 10 Sv

Dose rate range

Low dose rate: 0,1 µSv/h to 10 mSv/h (measuring range)

             0,5 µSv/h to 10 mSv/h (according to PTB-A 23.3, 11/2013)

High dose rate: 1 mSv/h to 10 Sv/h

Life span of the counting tube

500 mSv in low-dose mode

Auxiliary voltage Power consumption

4.75 to 5.25 V 80 to 120 mA

Ambient temperature in operation

-20°C to +40°

Storage ambient temperature

-20°C to +50°C

Rel. humidity (Probe)

10% to 90% (non-condensing)

Rel. humidity (Display unit)

10% to 85% (non-condensing)

Protection class (Probe)

IP 53

Protection class (Display unit)

IP 43 (according to DIN IEC 60529)

Weight (Probe)

ca. 300 g

Weight (Display unit)

ca. 800 g (incl. batteries)

Data storage

2400 recordings with date and time

Dimensions

160 x 160 x 55 (L x H x D in mm)

Communication

USB (1 host for USB stick), RS-485 (for detector)

Alerts

Acoustical and/or visual

Warnings

Detector failure, temperature, warning threshold and measuring range threshold exceedance

Operating voltage

6 VDC ±5%

Battery supply

4 batteries rechargeable via mains unit

Radioactive control device

Ident no. 72270

Source

90Sr

Activity

2,5 kBq

Tolerance

+0%, -30%