Comet U7844 Four channel data logger with pulse and two-state inputs (Lithium 3.6V, AA)

Measured value: Two-state signal, Pulses

Binary input:

Parameters of the voltage contact: "L" level input voltage: < 0.4 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: > 300 kOhm;

Contact voltage in the "switched-off" state: ca 3 V;

Minimum state duration necessary for latching the state:1s

Counter input:

Counter parameters: Range 24 bits (16 777 215), possibility of letting the counter overflow

Maximum pulse frequency: configured for voltage input - max. 5kHz

configured for a voltage-free or open-collector transistor - max. 200Hz

Operating temperature: -20 to +60 °C

Channels: 4x binary input nebo 2x binary input a 2x counter

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

Included in delivery:

U7844

Instruction Manual

1x Lithium battery 3.6 V

FREE FULL VERSION Analytical Software COMET Vision

USB COMMUNICATION CABLE IS NOT INCLUDED IN DELIVERY

Datasheet

Manual