Description
TSR4M / TSR4DM USB Radon Probe with Big Memory for continuous radon measurement in buildings
TSR4M is designed for continuous measuring of radon concentrations in buildings.
Portable probe basis is a measuring chamber with a semiconductor photodetector. Radon enters the chamber by diffusion through the input filter on the bottom of probe. The probe measures in autonomous and time continuous way. It processes results every 4-minute intervals and from this counts short-term moving average of radon concentration ( 1 hour moving average - average of 15 4-minute process intervals). It also counts long-term moving average of radon concentration ( 24 hours moving average). The probe saves time records of these radon concentration values including values of humidity and temperature within its internal memory (typically at an interval of 1 hour). Next saved value is time record of measuring energy spectrum (typically at an interval of 12 hours). The probe is random for location in measured place, but generally it is put on the bottom of the probe. Bottom of the probe cannot be covered. The probe can be switched on/off by switch. LEDs STAT a CHRG indicate current status of probe see ´Operation manual´ below.
The resulting values can be downloaded continuously during measurement or at once at the end of measurement. Data from the radon probe is downloaded to a PC directly via USB interface. Capacity of internal memory is almost unlimited.
Radon probe operation
Stand alone:
Thanks to its independent battery power, portable radon measuring probe supports flexible placing options within monitored structures. Accumulator will last for more than 1 year after full charging. After switching on TSR4M immediately starts measuring and saving results into internal memory. The resulting values are downloaded after end of the measurement via USB.
Probe connected via USB
Using usbRADONview app and USB cable is possible to download results to PC continuously during measurement or at once at the end of measurement.
Technical Data
Product | TSR4M USB Radon Probe with Big Memory |
Type symbol | 042 127 213 000 |
Average measurement sensitivity | 0,25 count/hour/Bq.m-3 (method RaA+RaC; 15°C ÷ 30°C; rel. hum. 20% ÷ 40%) |
Measuring range | MDA - 100 000 Bq/m3; MDA = 100 Bq/m3 per 1 hour or 20 Bq/m3 per 24 hours |
Measurement uncertainty | < 13% at 300 Bq/m3 per 1 hour; < 3% at 300 Bq/m3 per 24 hour |
Measuring chamber capacity | 0,176 dm3 |
Response rate | < 30 minutes (RaA); < 3 hours (RaA + RaC) |
Radon records | calculated from RaA (quicker, less sensitive) calculated form RaA + RaC (slower, more sensitive) |
Measuring relative humidity range | 10 - 90 % |
Measuring temperature range | -20 to + 60 °C |
Records saving interval | 1- 255 minutes, default 1 hour |
Results memory capacity | > 1000 years |
Powering | internal rechargeble accumulator; charging via USB |
Accu life after full charging | >1 year |
Current radon concentration results | short-term (0,5 hour running average from RaA) long-term (24 hours running average from RaA + RaC) |
Dimension | Ø 80 x 175 mm |
Radon probe variants
Probe Type | Connection | Display | Larger Storage | Ventilation Triggering | ||
TSR4 | USB | WLAN 868 MHz | x | |||
TSR4D | USB | WLAN 868 MHz | x | x | ||
TSR4M | USB | x | ||||
TSR4DM | USB | x | x | |||
TSR4S | USB | SIGFOX | GPS | |||
TSRE1 | Ethernet | MODBUS TCP/IP | Wi-Fi | x | ||
TSRS | UART | RELAY | x | |||
TSRS2 | RS-485 | MODBUS RTU | ||||
Scope of Delivery
- TSR4M USB Radon Probe with Big Memory
- Power adapter 230VAC/5VDC
- USB cable A-B
- Probe holder
- Operation Manual
