5
Measuring resolution
0.1 %RH/°C, for displaying, programmable 0.1 or 1
Hysteresis
(not applicable to AR232.B)
± 0.8 % RH
Long-term stability (3)
<0.25 %RH/year (does not apply to AR232.B)
Response time
(63%)
8s (airflow required> 3.6 km/h, 1m/s)
Measurement update period
5s (on battery power and always for Bluetooth communica-
tion) or 1s (after connecting to the computer's USB port)
Working environment
air and neutral gases, dust-free (for AR236.B)
Communication interface for a computer
USB (micro B connector), drivers for Windows 7/8/10
Bluetooth Low Energy radio interface
(optional)
BLE, version 4.2, range (depending on the type of obstacles,
the relative location and used mobile equipment) < 9m
Data memory
(4MB, internal, non-volatile, FLASH type, FAT
file system)
up to 94/104 thousand (AR236.B/AR232.B) records in endless
(circular) mode or until memory is full
Data recording interval (1)
programmable from 5s to 8 hours, every 5s
Real time clock
(RTC)
quartz, date (yyyy: mm: dd), time (hh: mm: ss),
includes leap years, with the correction of time counting
Optical and audio signalling
LCD display, 2 LED red alarm diodes, buzzer (low volume, for
working in silent environment)
LCD display
(without backlight)
2 lines of 4 digits, 7-segment, 8 mm high, signalling icons
and measurement units
Power supply
(lithium battery)
3.6V size AA (R6), 2450mAh, e.g. SAFT type LS14500
Working time of a new battery
(2)
up to 15 years (at 20 ÷ 30°C), battery level indication
Nominal operating conditions
-20 ÷ 70°C, <100% RH (without condensation)
Casing
portable, ABS material, light grey color
Protection level
IP65 for housing, IP41 for measuring probe (for AR236.B)
Casing dimensions
(details in chapter 5)
77x111x32 mm (without probe and hanging holder)
Operating position
any position or sensor cover down when the probe is
exposed to direct contact with water
Weight
~ 150g (with battery and probe integrated with the casing)
Notes:
(1)
- registration is always held (pause) during connection to the computer's USB port
(2)
- estimated working time depends on the data recording interval, alarm and Bluetooth (BLE) status and operating temperature:
a) up to 15 years (recording interval >30min, alarms and BLE always off, operating temperature 20 ÷ 30°C)
b) at least 8 years (recording interval >25s, alarms and BLE always off, 20 ÷ 30°C)
c) 16 months (recording interval >25s, BLE
or
alarms every 1s with sound signalling continuously present, 20÷30°C)
d) 22 months (5 s recording interval, alarms and BLE always off, 20÷30°C)
e) 10 months (5 s recording interval, BLE
or
alarms every 1s with sound signalling continuously present, 20 ÷ 30°C)
f) 6 months (5 s recording interval, BLE
and
alarms every 1s with sound signalling continuously present, 20÷30°C)
g) for alarms occurring sporadically and with the signaling set every 5s, the above times will be significantly longer
h) at temperatures around -20° C and +70°C, the above times will be shortened by about 25 ÷ 30% (depending on the type of battery)
i) it is possible to use a USB power adaptor (AC power adaptor or powerbank, with the battery continuously present and functioning as
a back-up power supply), however it may cause disturbances in the device operation due to the reduction of resistance to harmful
external factors at the installation site, such as water, dust, surges in the power grid, etc.
(3)
- for humidity and temperature recorder AR236.B it is recommended to periodically check and/or calibrate the device in accordance with
the requirements applicable at the place of use or every 1 year
