With three current inputs and one binary input logged simultaneously, the COMET U6841 suits process current monitoring, energy metering and industrial control applications where 4-20 mA analogue signals must be recorded alongside a binary state input in a single compact device. Review current input ranges and binary specification against your installation requirements before ordering.
1 READY TO SHIP
COMET U6841 Datalogger is designed to record 3 current inputs and 1 binary input.
The recording is performed in a non-volatile electronic memory. The data can be transferred to a PC via USB-C.
In case of exceeded set limits alarms are indicated by LED, LCD and acoustically by built-in beeper.
Recorder includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.
INCLUDED IN DELIVERY:3 year warranty
USB Communication cable not included in the delivery.
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 Lithium battery 3.6V, size AA
Protection class IP20
Dimensions 61 x 93 x 32 mm
Weight (including batteries) approx. 120 g
Warranty 3 years
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