Four channel data logger with pulse and two-state inputs
code: U7844
Data logger is designed to record from four binary inputs or from two pulse and two binary inputs.
The recording is performed in a non-volatile electronic memory. The data can be transferred to a PC via USB-C.
Datalogger inputs can be set up for four binary inputs or two binary inputs and two pulse counters.
In case of exceeded set limits alarms are indicated by LED, LCD and acoustically by built-in beeper.
The device includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.
Included in delivery:
- U7844
- Manual
- Traceable calibration certificate
- Technical support at discussion forum
- FREE analytical software COMET Vision
Technical data |
Value |
| 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 |
| GENERAL TECHNICAL DATA | |
| 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 |
| Warranty | 3 years |
Features
Applications:
Healtcare and laboratories - Monitoring of storage areas at temperatures up to -200 °C.
Food industry - Monitoring of critical processes according to the HACCP standard with the possibility of prompt notification of unforeseen events that could lead to the degradation of the goods.
Goods transport - Complete temperature monitoring during transport of pharmaceuticals, foodstuffs, flowers, ...
Industry and production - monitoring temperature and humidity in food, pharmaceutical, aerospace etc.
Production facilities and warehouses - Monitoring of storage conditions and production processes in the temperature range -200 ° C to + 600 ° C. Sending data to COMET Database or SCADA third-party systems.
Meteorology - COMET sensors together with COMET radiationshields are the ideal basis for weather stations for long-term weather, climate and air monitoring.
Data centers, server rooms - Temperature and humidity monitoring, data center monitoring, RACK stands, including flood status reports, opening / closing of doors (windows), motion, smoke. SNMP monitoring, remote alarms by email and Syslog.
Building management - Our instruments which measure temperature, humidity, atmospheric pressure and CO2 are an integral part of these industry-leading solutions.
Features description:
* the features may vary depending on the device type● acoustic and 3-colours LEDs alarm
● easy to use software for data analysis on PC
● communication interfaces - USB-C
● rugged design
● long battery life up to 6 years
