Carrying Out A Measurement - SARAD RTM 1688-2 Manual

RTM 1688-2

Carrying out a measurement

Press the push button to start a new measurement series. The pump starts and the display
will show the remaining time to complete the first integration interval.
The actual status and set-up information (see below) may be displayed by pressing the button
again.
If the first interval has been completed, five different display pages are available. The several
pages can be toggled by repeated pressing the push button. Depending on the selected system
of units, the concentration values are given either in 'Bq/m³' or 'pCi/L' (mbar/inHg, °C/°F)
The first page shows the actual Radon concentration (calculated for the last sampling interval)
with the statistical error for a 1 Sigma confidence interval. If "Fast" mode was selected, a
starlet is appended to the word "Radon" in the first row. Right beside, the time stamp is given
when the integration interval of the calculated concentration was finished
The bottom row contains at the left hand side the total number of integration intervals since
the last start of a measurement series. At the right hand side the pre-set integration interval
and the remaining time period of the actual sample is displayed.
Page two gives the same information for Thoron (Rn-220)
The readings of the additional sensors are shown at the third page. These values represent
averages which are derived from all "one Minute shots" of the entire integration interval.
The next page shows the average values of the Radon and Thoron concentration from the
start of the actual measurement series. The total sampling time is given in the first row.
8
RTM1688 SN:00001
Wait 120 Minutes
for first data!
RADON*
85Bq/m³±10%
#34 117/120Min
Thoron
124Bq/m³±16%
#34 117/120Min
Ambient
21.5°C
46%rH
Average
Rn:
Tn:
Manual_RTM1688-2_EN_24-02-2023.docx
12:20
12:20
12:20
987mbar
12.3V
68.0Hrs
314Bq/m³
141Bq/m³
 SARAD GmbH 2023