DTU4x0 GPRS/NB-IoT Data Loggers
User Guide. r. 2.01 | 2022-05-17
Tel.: +420 234 076 670
7
e-mail: [email protected]
DTU410
DTU410-C
DTU420
DTU420-C
Input resistance
measurement range
0 – 100 kOhm
The line is working properly: open state -3-100 kOhm, closed state - 1-3 kOhm
The line is faulty: line is broken - more than 10 kOhm, short circuit - 0-1 kOhm
4-20 mA
current loop mode
Accuracy: 2% (t=22ºC), max - 5% (in the operating temperature range).
Warm-up time - 60 sec
OTHER PORTS & CONNECTORS
Serial ports
1 x RS-232: non-isolated, Rx, Tx, GND signals. Default speed -19200 bps (8N1)
1 x RS-485: non-isolated, A+, B- signals. Default speed - 19200 bps (8N1).
Load capacity – up to 32-unit load (UL) devices. 1/2UL = 24kOm.
Maximum communication range - up to 1000 m
Power outputs
2 x 3.6V (ENABLED by default)
4
Software configurable outputs:
1 x 5V (DISABLED by default). Enabled when the ‘1-Wire’ input is activated (DS18B20)
1 x 7.5V (DISABLED by default). Enabled when the ‘Current loop’ input is activated.
1 x 12V (DISABLED by default). Enabled when the ‘Current loop"’ input is activated.
DTU opening sensor
1 x button
SIM
2 x mini-SIM (2FF)
USB
1 x mini-USB B
Antenna/Connector
DTU4x0
: internal flexible antenna 2-5.2dBi on the u.Fl con SMA-f connector;
DTU4x0.F
: u.Fl con SMA-f connector
DEFAULT SETTINGS
Data slice saving
once per hour
Readings transfer to server
once/day, from 08.00 to 09.00
IOT24.eu server
IP address/server port
5
iot24.eu:10002 (
GSM
)
139.162.147.141:10003 (
NB-IoT
)
Server connection
on schedule; when pressing configuration button (
S2
);
on event at facility (short circuit, break); on reboot
Time synchronization
each connection to server
Data Storage
up to 90 000 entries from 10 meters
GENERAL SETTINGS
Dimensions (L x W x H)
149 x 121 x 87 mm
Weight
no more than 530 g
Enclosure
Plastic, protection class – IP65
Archive depth
10 years (hourly logging)
Data storage in non-
volatile memory
up to 90 000 entries from 10 meters
Time accuracy
5 sec/day
Average service life
10 years
OPERATING CONDITIONS
Operating temperature
-20...+50°C
6
Relative air humidity
up to 100% at 25°C
Atmospheric pressure
84-106.7 kPa (630-800 mmHg)
4
3.6V power is
supplied programmatically, by pulses, with an input polling frequency.
5
For GPRS devices, use a domain name to connect to the server. For NB-IoT devices, use only the IP address.
6
When operating from battery at temperatures below 0°C, the battery life could be shorter.
