LRHT-2 SITE-LOG Relative Humidity Data Logger
SITE-LOG LRHT-2 ( with an external 3-foot sensor probe ) is a 2-channel, battery powered, stand-alone data logger, with storage up to 8 MB of data in non-volatile flash memory. Its aluminum enclosure makes it excellent in the harshest industrial environment.
Plug & Play USB port and versatile custom equation simplify communications and engineering unit conversion. Powered by Sensirion high performance digital RH sensor, the LRHT-2 logger is well suited for science and laboratory applications where precise and accurate measurements are critical.
Simply plug the logger to computer's USB port, and the software automatically recognizes it and handles the configuration, downloading, graph viewing and more...
- 8 megabyte memory size
- Both USB and serial interfaces with auto baud rate of up to 115200 bps
- Sensirion RH Digital Sensor
- Powerful software for configuration, downloading, plotting, analysis and alarm reporting
- Configurable alarm controls/excitation controls
- Wide sampling interval selections (from 1 second to 12 hours)
- Rugged aluminum enclosure
- Coated PCB to protect against moisture, corrosion and mildew.
|Product Name||SITE-LOG Relative Humidity Data Logger|
|Channels||Relative humidity (0 ~ 100% RH)
Temperature (-40°C ~ 70°C, -40°F ~ 158°F)
|Resolution||Temperature channel: 12-bit
Relative humidity channel: 12-bit
|Accuracy||Temperature:+/- 0.4°C at 25°C
Relative humidity channels: +/-3% (20% - 80% RH)
|Sensor Probe||3-foott long, terminal block connector|
|Channel Alarms||Two editable alarm thresholds per channel.|
|Alarm Output||ALARM1 & A2/E terminal strips can be configured as alarm outputs.
Alarm-On: MOSFET(N-Channel) switch on
Alarm-Off: MOSFET(N-Channel) switch off
Max Power: 200mA @ 24VDC
|Alarm-On Delay||Programmable 0 - 10 minutes delay with 1-minute increment.|
|Alarm Indicator||On-board LED becomes red when in alarm condition.|
|Size||4 Mega bytes (4MB readings).|
|Data Retention||Over 20 years.|
|Sampling Interval||1 second to 12 hours programmable. (external power supply required if interval less than five seconds)|
|Logging Mode||Stop recording or FIFO when memory is full.|
|Logging Activation||Programmable instant, start delay or field push button activation.|
|Interface||USB (Mini-USB-B) (USB-A-mini USB-B Cable included)
AUX(RJ11) for TTL level RS232 communications.
|Baud Rate||Auto-detect baud rate from 2400 to 115200 bps on both USB and AUX.|
|Power||Built-in 3.6V Lithium Battery.|
|Battery Life||5 years based on 1 minute sampling interval.|
|SiteView (Sold separately)||Configuration, downloading, plotting, real-time view, custom calibration and custom equation.|
|Software Requirement||Computer with 1.0 GHz or faster processor
1 GB Memory or higher
10 GB of available hard-drive space or higher
Windows XP with SP2 or later, Vista, Window 7,8,10
At least one USB port or one COM port.
|PCB Treatment||Conformal coating.|
|Dimension||88 X 64.2 X 24 mm (3.46 X 2.53 X 0.95 inches).|
|Mounting||Probe/wall-mount holes for hanging/mounting.|
|LED Indicator||Tri-Color LED: (can be disabled for power saving)
Normal Sampling: light green when sampling.
Alarm: red when sampling.
Low Battery: amber when sampling.
|Excitation Control||A2/E terminal strip can be configured as excitation control output for driving the power of connected devices.
Warm-up delay interval settings: 10 to 240 seconds with 10-second increment.
|Operating Environment||-40 ~ +70 °C (-40 °F ~ 158 °F), 0 ~ 95% RH non-condensing.|
|Clock Accuracy||±1 mintue per month.|
Logger Memory Capacity
|Sampling Interval||Enabled Channel||Logging Capacity|
|1 minute||1||4 years|
|1 minute||2||2 years|
|10 seconds||1||242 days|
|10 seconds||2||121 days|
|1 second||1||24 days|
|1 second||2||12 days|