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manufacturer of measuring instruments
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GSM data logger for 3 current inputs 0-20mA and 1 two-state input with modem

code: U6841M

GSM Datalogger is designed to record 3 current inputs and 1 binary input. In case of exceeded set limits, SMS and JSON messages can be sent via GPRS data connection. It is possible to set the regular sending of JSON messages to Comet Database, the sending interval is adjustable. Alarms are also indicated locally by LED, LCD and acoustically by built-in beeper.
The recording is performed in a non-volatile electronic memory. The data can be transferred to a PC via USB-C.

GSM recorder includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.

Included in delivery:


Technical data

Value
Measured value Current
Two-state signal
CURRENT INPUT
Measuring range 0 to 20 mA DC
Resolution better than 1 µA
Accuracy ±20 µA
Input resistance approx. 100 Ω
Minimum current 0 mA (open circuit)
Maximum current limited to approx. 40 mA
BINARY INPUT
Parameters of the voltage contact „L“ level input voltage:< 0,8 V(*);
„H“ level input voltage:> 2 V;
Minimum voltage applicable:0 V;
Maximum voltage applicable:+30 V DC
Parameters of the voltage-free contact Contact resistance in „switched-on“ state:< 10 kOhm;
Contact resistance in the „switched-off“ state:> 2 MOhm;
Contact voltage in the „switched-off“ state:ca 3 V;
Minimum state duration necessary for latching the state:1s
GENERAL TECHNICAL DATA
Operating temperature -20 to +60 °C
Channels 3x current input, 1x binary input
Memory 500,000 values in noncyclic logging mode; 350,000 values in cyclic record mode
Recording interval adjustable from 1 s to 24 h
Display and alarm refresh adjustable 1 s, 10 s, 1 min
Recording mode noncyclic - data logging stops after filling the memory
cyclic - after filling memory oldest data is overwritten by new
Real time clock year, leap year, month, day, hour, minute, second
Power battery SONY LiIon 5200mAh
Protection class IP20
Dimensions 61 x 93 x 53 mm, with antenna 120 x 93 x 53 mm
Weight (including batteries) approx. 270 g
Warranty 3 years