5
4. TECHNICAL DATA
Measuring range of probes
(external and built-in)
temperature
-30÷80°C (-20÷70°C for internal probes with LCD)
humidity
0÷100 %RH, hysteresis ±1% RH, long-term stability
<0,5% RH/year, do not flood the measuring probe with water
Measurement accuracy of
probes
temperature
±0.5°C in the range of -10÷80°C and ±0.5÷1.5°C in the remaining range,
for AR435/436/437
: ±0.5°C in the range of 20÷30°C and ±0.5÷1,8°C in
the remaining range
humidity
± 3% RH for 20 ÷ 80% RH and ± 3 ÷ 5% RH in the remaining range
Measurement input in AR433
and AR434
(1 universal, programmable via
USB interface)
thermo-resistive
(RTD) and resistive
Pt100
(measurement range -200÷850°C),
Ni100
(-50÷170°C),
0÷700 Ω
, 3-
or 2-wire connection, wire resistance Rw < 25 Ω (for each line), polarity
current ~480 μA (pulse)
thermocouple (TC)
J
(-40÷800°C),
K
(-40÷1200°C),
S
(-40÷1600°C),
B
(300÷1800°C),
R
(-40÷1600°C),
T
(-25÷350°C),
E
(-25÷680°C),
N
(-35÷1300°C)
current
0/4 ÷ 20 mA (Rin = 110 Ω)
Voltage
0 ÷ 10 V (Rin = 110 kΩ), 0 ÷ 60 mV (Rin> 2 MΩ)
- processing errors
(AR433/434
at temperature of 25°C)
basic
0.1 % (0.2 % for TC) of the measurement range ±1 digit
additional
for thermocouples: < 2 °C (temperature of cold ends)
due to ambient temperature changes: < 0.005% of input range /°C
- range of indications (resolution of analogue inputs)
-9999 ÷ 19999, programmable (for mA, V and Ω)
Measurement resolution
temperature 0.1°C, humidity 0.1% RH, 16 bit analogue input
Measurement and update period
programmable with AR40x recorder: 1 min ÷ 4 hr.
Radio track
ISM band
868 MHz, FSK modulation, modulation bandwidth ± 45kHz
Number of channels
7 (programmable from range 868.0÷870.0 MHz)
frequency of channel
operation
channel
0
1
2
3
4
5
6
MHz
869.955 869.77
869.445
869.605
868.05
868.3
868.55
transmission path parameters
4.8 kbit/s, output power <5 dBm, receiver sensitivity -106 dBm
range(open space)
<200m (maximum 400m with retransmission function), in buildings it
depends on local conditions
antenna (SMA-JW connector, band 850
÷ 880 MHz)
height 97mm,
vertical polarization
, impedance 50 Ω, gain 2,15 dBi,
VSWR ≤ 1.5
Interface for computer communication
USB, drivers for Windows XP/Vista/7/8/10
Optical signalling
(LEDs)
"Status", "RX/TX", in addition to AR432/434/436: 1 or 2 alarms
LCD
(AR432, AR434, AR436)
7 segments, 4 digits, 10mm height
Power supply
and working time on a new battery
(lithium)
3.6V type AA (R6), 2450mAh (SAFT LS14500), up to 6 years (note 1)
Rated operating conditions
-20 ÷ 70 ° C, <100% RH (no condensation), do not flood with water
Operating environment
air and neutral gases, no dust
Operating position
(sensor or measurement probe)
any chosen position or with cover downward when the probe has direct
contact with water
Housing
AR431/432/433/434/435/436
wall-mounted IP20, ABS UL94-V0, white, 80x80x25mm
AR437
industrial IP65, polycarbonate, 82x80x55mm, IP40 or IP50 probe
Weight
(with battery and antenna)
~90g (AR431/433/435), ~110g (AR432/434/436), ~230g (AR437)
(1)
the operating time depends on the measuring period, the presence of the LCD and ambient temperature. Exemplary, approximate operating times
at 20÷30°C, with undisturbed radio transmission and
inactive retransmitter function
(increasing the range):
Measurement period
1 min
5 min
10 min
20 min
40 min
60 min
working time with /
without LCD
7/5 months (also when no
communication with AR40x)
12/8 months
20/11 months
32/13 months
45/14 months
51/16
months
- using an accessory USB power adapter may extend the battery life of up to 8 years.
The USB power adapter should be also used in retransmitter mode
(increasing the range), then the battery operates only as a standby power supply (sufficient for 1÷3 weeks of continuous operation)
