Babyline 81 Ion chamber survey meter

Product introduction

Babyline 81 Ion chamber survey meter is used to measure the dose rate of incident and scattered photons (8keV~10MeV), as well as the absorbed dose produced by photons entering human tissue (0.007 g/cm2 or 0.3 g/cm2), and has Dose rate meter/dosimeter with linear response.

The system consists of a high gain current amplifier and processing electronics with a rechargeable or non-rechargeable battery inside the instrument handle. Several switches of the instrument are used to check the zeroing of the galvanometer and to select the measurement range (six dose rate ranges and five cumulative dose ranges). The large pointer allows the user to easily read the absorbed dose rate. The Babyline 81 has become the reference dose rate meter in nuclear facilities and laboratories worldwide.

Technical Parameters

• Detector: Air ionization chamber (515±10cm3)

• Dose rate range: 6, 1000, 100, 10μGy/h; 1000, 100, 10mGy/h

• Dose range: 5, 1000, 100, 10μGy/h; 100, 10mGy/h

• Responsive range: flat within 8keV~2MeV

• Angular response (within 130°cone angle): ±5%(60Co,1.25MeV);

±30%(241Am,60keV);±40%(71Ge,10keV)

• Accuracy: better than 10% (10μGy/h); better than 7% (100μGy/h~1000mGy/h) better than 10% (10μGy~100mGy)

• Sensitivity: 4.8×10-12A/mGy/h (background level＜1μGy/h)

• Response time: <20s (100,10μGy/h), higher dose rate <5s

• Power supply: 4 1.5V alkaline batteries (R14 typeC), battery life about 60h

• Environmental conditions: -10°C~50°C, IP64

• Size: 290mm×236mm×115mm

• Weight: 1.65kg

Babyline 81 Ion chamber survey meter