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Multifunctional gamma radiation monitor MFM 203

MFM 203 is a portable-size instrument for continuous monitoring of gamma radiation in the environment

  • quick and simple assembly and initiation

  • user friendly menu-based operation

  • automatic operation and easy management with instructions shown on the LCD

  • "preset count mode" with predefined precision of the measurements with automatic optimisation of the number of measurements

  • "preset time mode" with constant predefined measuring interval

  • self-controlled operation with diagnostic and warning printouts

  • bypassing of mains power failure (approx. 2 days) with a built-in rechargeable battery or with an optional larger external 12 V battery

  • linking to the communication network (modem + telephone line, radio - link) for the centralised on-line data collection and control (early warning system) over the built-in buffer memory and RS-232-C port

  • simple type-in reprogramming of code-protected measuring parameters (for example, when introducing a new measuring mode or when changing the probe calibration constants)

  • possibility to directly connect sensor for rain intensity and quantity (tipping-bucket or weighting ombrometer)

  • fully compatible with AMES types MFM 202 / MFM 202A

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MFM 203 is a portable-size instrument, functionally completely down-compatible and superior to the AMES type MFM 202A. It has completely new electronics and software, designed for the continuous monitoring of gamma radiation in the environment. MFM 203 autonomously performs all the necessary functions of a self-sustained local monitor. When connected to a data communication link, it serves as a smart field unit of the real-time automatic early warning network. Supplied with two energy-compensated GM probes of different sensitivities, MFM 203 can cover dose-rates from the normal background to the accidental levels.

The microprocessor-controlled monitor is equipped with a keyboard and an alphanumeric LC Display. Small printer or external data storage can be connected as an option. Unit autonomously processes, displays and prints (if equipped with the printer) all measured data and warnings, triggering visual and audible alarms. It is designed to be connected on-line (via computer network interface, telephone line modem or radio link) to the central data collecting and controlling computer of an early warning system. Data can be transferred in real time or at scheduled time intervals.

In the standard version the instrument consists of the following components:

  • MFM 203 measuring unit

  • remote “A” (high-sensitive) probe

  • remote “B” (low-sensitive) probe

FUNCTIONS

MFM 203 performs the following functions:

  • measures and displays:

  • Dose rates (Sv/h),

  • Preset count mode: with a predefined statistical uncertainty, it automatically adjusts measuring intervals to the intensity of the radiation (variable time constant of the instrument)

  • Preset time mode: instrumentn measures in a predefined equal time intervals (statistical uncertainity depends on the dose rate)

  • triggers the adjustable alarms (with visual and audible signals), records their occurrences and transmits the alarm status

  • measures the dose increment (µSv) from the last periodic report (usually 24 hours)

  • automatically gives periodic reports on the dose increment, dose rates, alarms and functional warnings

  • measures the total dose (µSv) of a longer time period

HIGHLIGHTS

  • quick and simple assembly and initiation

  • user friendly menu-based operation

  • automatic operation and easy management with instructions shown on the LCD

  • "preset count mode" with predefined precision of the measurements with automatic optimisation of the number of measurements

  • "preset time mode" with constant predefined measuring interval

  • self-controlled operation with diagnostic and warning printouts

  • bypassing of mains power failure (approx. 2 days) with a built-in rechargeable battery or with an optional larger external 12 V battery

  • linking to the communication network (modem + telephone line, radio - link) for the centralised on-line data collection and control (early warning system) over the built-in buffer memory and RS-232-C port

  • simple type-in reprogramming of code-protected measuring parameters (for example, when introducing a new measuring mode or when changing the probe calibration constants)

  • possibility to directly connect sensor for rain intensity and quantity (tipping-bucket or weighting ombrometer)

  • fully compatible with AMES types MFM 202 / MFM 202A

 

Product references

RANGE OF DOSE RATES standard version with probes  A in B: 10 nSv/h (10•10-9Sv/h) to 10000 mSv/h  (1 Sv/h)
version with probe A only: 50 nSv/h (50•10-9 Sv/h) to 600 µSv/h (600•10-6 Sv/h)
RANGE OF DOSES IN µSv limited to 5 digit diplay and one digit decade exponent (XXXXXe+Y)
ENERGY RESPONSE OF PROBES equal in the energy interval from 60 keV to 1.3 MeV within 20 %
LINEARITY deviation less than 7% within standard range
PROBES alumininium weather-proof housing with the exchangable plastic cap, weather-proof connector, operating temperature range -40ºC to +70ºC, over-range output signal, audible indication of pulses, power supply: 12V DC, internal high-voltage generator
DIAGNOSTICS programmed, with malfunction warnings and their combinations
CONNECTION TO THE COMMUMICATIONS NETWORK over buffer memory and RS-232-C port
POWER SUPPLY 220 V 50Hz / 12V DC (option),
from built in rechargable battery approx. 2 days
POWER CONSUMPTION without display illumination 0.6 W (12 V, 50 mA)
DIMENSIONS AND WEIGHT monitor: L 30 x W 20 x H 8 cm; 4.8 kg
probe (1): L 31 cm x Ø 5 cm; 0.8 kg

 

TitleDescriptionFilename
Leaflet MFM 203  mfm_203.pdf 
Manual MFM 203  MFM203_manual.PDF 

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Multifunctional gamma radiation monitor MFM 203
Multifunctional gamma radiation monitor MFM 203