Technical data
Measured value
Current
Voltage
Two-state signal
Pulses
DC VOLTAGE
Measuring range 0 to 10 V
Accuracy ±10 mV
Resolution better than 100 µV
DC CURRENT
Measuring range 0 to 20 mA
Accuracy ±20 µA
Resolution better than 0,1 µA
BINARY SIGNAL
Input voltage for level “switched on”/ <0,4 V/> 2 V
Minimum/maximum input voltage 0 V/+30 V DC
I mpedance of the “switched on”/ < 10 kOhm/> 300 kOhm
COUNTER INPUT
Range of counter 24 bit (16 777 215) the counter overflow can be allowed
Maximum input frequency 200 Hz
GENERAL TECHNICAL DATA
- Operating temperature: -10 to +60 °C
- Channels: 4x binary, counter, voltage and current input
- Memory: 1 000 000 values (noncyclic record), 600 000 values (cyclic record)
- Recording interval: 1s to 24 hours
- Display and alarm refresh: each 10 s
- Recording mode: noncyclic - data logging stops after filling the memory cyclic - after filling memory oldest data is overwritten by new
- Available temperature units: degrees Celsius, degrees Fahrenheit
- Communication interface: Ethernet, USB, RS232
- Ethernet communication protocols: WWW, SNMPv1, XML, DATALINK
- Alarm protocols: E-Mail
- Power: AC adapter 230Vac/5Vdc (neccessary for Ethernet interface)
- Battery life: 3 - 4 weeks
- Protection class: IP20
- Dimensions (without connectors): 178 x 95 x 37mm, without attached cables
- Weight (including batteries): approx. 380 g
- Warranty: 3 years
Features
Up to 4 physical Inputs - TERMINALS
- Sensors with voltage output (range 0-10 V; accuracy ±10 mV)
- Sensors with current output (range 0-20 mA; accuracy ±20 µA)
- Sevices with two-state output (potential-less contact or voltage signal 0-30V); may be applied to input 3 and 4
- Devices with pulse signal (potential-less contact or voltage signal 0-30V); may be applied to input 4
Evaluation of up to 16 variables
Up to 16 variables may be calculated from the four connected probes / sensors. This is the sum of the measured and calculated values. The calculated values can be a further expression of moisture – dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy. It can be also the result of inter-channel conversions, e.g. the difference of two connected temperature probes.
The measured values are stored in the internal non-volatile memory. Memory capacity is up to 1 million values. Logging mode can be adjusted as non-cyclic, when logging stops after filling the memory, or cyclic, when after fulfilling the memory oldest stored values are overwritten by new ones.
Measured values are displayed on the screen with backlight option and the ability to change the size of display digits
Power supply
Multilogger can be powered by AC adapter or by rechargeable batteries with charging capability. Batteries are always a part of the device (you can also use standard alkaline AA batteries). Batteries power the device for several months.
While using the AC adapter, the batteries provide backup operations and provide recording and measurement during power failure. Thanks to the Ethernet output the device informs about the failure via e-mail message.
Alarm limits and alarm indication
It is possible to set two independent alarm limits for each channel (i.e. measured or calculated value).
Alarm signalization can be acoustic (built-in beeper), optical, sending an e-mail alert or an alarm output. The alarm output is for connecting an external audio or visual alarm.
Communication interfaces
Multilogger is always equipped with USB connector for communication, data analysis and also for charging of the rechargeable batteries.
- send an e-mail when an alarm state starts or ends
- use DATALINK: display current values or download values from memory to COMET Database in your PC. Software COMET Database contains many useful tools for data analysis - graphs, tables, statistics, etc.simple wireless communication with Wi-Fi TP-LINK router
- third-party applications to read the actual measured values using universal protocols SNMPv1 and XML
- view current measured values using your web browser
Output ALARM OUT
- Output can be used for controling other devices when alarm is launched, such as external buzzer, telephone dialer etc.
- Type of output - open collector transistor
- Max. switching current - 100 mA
- Max. voltage on output - 12 V
- Auxiliary voltage at terminal - +5 V (only when the mains supply is present)
- Users can receive alarms if the values go outside the paramters set. Alarms are indicated through an internal buzzer , 3 LEDs or email alerts via Ethernet port.
