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Technical Data
Measurement Range
Radon/Thoron
Temperature
Humidity
Bar. Pressure
Response time (95%)
Radon fast
Radon slow
Thoron
Sensitivity (fast/slow)
Measurement accuracy
Sample Interval
Memory
Pump rate
Internal volume (chamber/air loop) approx. 250 ml
Power supply
Battery operation
Recharge Time
AC/DC adapter
User interface
Interface
Protocols
Dimensions
Environmental condition
Temperature
rel. humidity
bar. pressure
Weight , net
Tamper detection
SARAD GmbH 2023
1 Bq/m³ ... 10 MBq/m³
-20 °C ... 40 °C
0 ... 100 %
800 mbar ... 1200 mbar
15 Minutes
120 Minutes
1 Minute
3 / 6.5 cts/(min*kBq/m³)
7%/5% @1kbq/m3; 1h
1 ... 255 Minutes (adjustable)
2047 data records (circular structure)
0.3 l/min
> 160h (continuous pumping)
> 10 days (pump in interval mode)
8 Hours
100-240V/AC, 50/60Hz, 18V/DC1A
Display 3 x 16, 2 push buttons, buzzer
USB, RS232, RS485 (optional)
SARAD proprietary
MODBUS RTU (9600/19200bps)
ASCII Protocol print
232 mm x 182 mm x 135 mm
5 °C ... 40 °C
0 ... 95%, not condensing
800...1100 hPa
3.5 kg
if instrument is moved > 8 Seconds
Manual_RTM1688-2_EN_24-02-2023.docx
RTM 1688-2
19
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