LB 112 Micro Gamma - stationary dose rate monitor
The LB 112 Micro-Gamma datalogger is a stationary monitor for one or two independent detectors or for a low dose / high dose rate measuring system. The operation of the device is controlled with a simple menu and softkeys.
Operation of the LB 112 is carried out with five softkeys located below the vacuum fluorescence display with adjustable brightness. All parameters are protected by a password.
An info key calls up a menu with important information during the measurement:
- alarm conditions
- raw data
- alarm thresholds
- further parameters
If the dose rate unit changed, the results are automatically renormalised. The dose rates are also available as output currents via the two analog outputs 0/4-20 mA, in a linear or logarithmic scale.
Features
- Compact measuring device for wall installation made of stainless steel with IP65 tightness
- Connection of up to two dose rate probes or other detectors (single or dual probe operation)
- Low dose / high dose rate system
- Radioactive gas monitor
- Ratemeter or scaler timer mode
- Memory for 4000 data points
- Electrically separated in- and outputs, e.g. RS232/RS485 interfaces, USB interfaces, Ethernet interfaces, 3 digital inputs, 2 analog outputs, 5 relay outputs
- Data transfer and communication in local and large area measuring networks
- Network capable with F2C protocol
- Easy to read graphical vacuum fluorescence display
- Measuring station with alarm signals (lamps, flashlight, horn) for local warning functions
- Local warning functions freely programmable with the option to reset the acoustic signal
- Protection of the measuring parameters by a password and internal jumpers
| General technical specifications1 | |
| Measuring modes | ratemeter and scaler/timer |
| Display | vacuum fluorescence (64 x 128 pixel) |
| Memory | up to 4000 data sets |
| Power supply | wide range 85 to 264 VAC or 9 to 36 VDC input depending on supply module |
| Power consumption | approx. 12 W |
| Temperature range | -5 °C to 50 °C |
| Relative humidity | 10 % to 80 %, non condensing |
| Protection degree | IP65 |
| Dimensions | 200 x 200 x 80 mm³ |
| Weight | 2.6 kg, stainless steel housing |
| Micro-processor electronics |
| Low power consumption microprocessor unit for parameters and measured data |
| 256 kB EEPROM memory |
| Real time clock |
| Two 6 pin connectors for two probes |
| Power supply for probes ± 5 VDC, ± 15 VCD, power < 60 mA |
| Normpulse input |
| Control voltage for high voltage supply within the probes 0 – 5 VDC, positive |
| Electrically separated in- and outputs |
| 3 digital inputs |
| 2 current outputs (0/4-20 mA) |
| 5 relay outputs |
| 2 serial interfaces as RS 232 or RS 485 (max. 1200 m, max. 32 devices per bus) |
| USB / Ethernet |
| Dose rate probes H*(10) | ||
| LB 6500-4-H10, GM-probe | 0.1 μSv/h to 10 mSv/h | 65 keV to 1.3 MeV |
| LB 6500-3-H10, GM-probe | 1 μSv/h to 1 Sv/h | 50 keV to 1.3 MeV |
| LB 6360-H10, Proportional counter | 50 nSv/h to 20 mSv/h | 35 keV to 1.3 MeV |
| LB 6701L-H10, Ionisation chamber | 10 μSv/h to 10 Sv/h | 50 keV to 1.3 MeV |
| LB 6701M-H10, Ionisation chamber | 100 μSv/h to 100 Sv/h | 50 keV to 1.3 MeV |
| LB 6701H-H10, Ionisation chamber | 1 mSv/h to 1000 Sv/h | 50 keV to 1.3 MeV |
| LB 6411 for neutrons | 30 nSv/h to 100 mSv/h | 10 meV to 20 MeV |