Overview
The HOBO MX1104 multi-channel data logger measures and transmits temperature, relative humidity, and light intensity data wirelessly. It also includes an external analog input to attach a variety of additional sensors.
This self-contained wireless data logger lets you use your mobile device and Onset’s free HOBOmobile® app for iOS to access data, at any time, over a 100-foot range via Bluetooth Low Energy (BLE) technology. You can configure the logger, read out data, view data in graphs, check the operational status of loggers, configure alarm notifications, and share data files – all with no dedicated equipment beyond a mobile device. And if used with the new MX Gateway, you can remotely access your data in Onset’s cloud-based HOBOlink® software.
Highlighted Features
l BLE communications for wireless data offload
l 16-bit resolution for highly accurate measurements
l Stores 1.9 million measurements for longer deployments between offloads
l New Self-Describing sensors with automatic configuration for fast deployment
l Compatible with existing sensors for a wide range of indoor monitoring
l Audible and visual LCD-screen alarms notify you if sensor becomes unplugged or a reading exceeds set thresholds
In what environment does this data logger operate?
This data logger operates in an indoor environment.
What measurements does this data logger support?
The MX1104 data logger supports the following measurements: 4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow, DC Current, DC Voltage, Dew Point, Differential Pressure, Gauge Pressure, Kilowatts (kW), Light Intensity, Relative Humidity and Temperature.
Temperature Sensor (MX1104)
Range: -20° to 70°C (-4° to 158°F)
Accuracy: ±0.20°C from 0° to 50°C (±0.36°F from 32° to 122°F)
Resolution: 0.002°C at 25°C (0.004°F at 77°F)
Drift: <0.1°C (0.18°F) per year
RH Sensor* (MX1104)
Range: 0% to 100% at -20° to 70°C (-4° to 158°F); exposure to conditions above 95% may temporarily increase the maximum RH sensor error by an additional 1%
Accuracy: ±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical
Resolution: 0.01%
Drift: <1% per year typical
Response Time (MX1104)
Temperature: 11 minutes in air moving 1 m/s (2.2 mph)
RH : 30 seconds to 90% in airflow of 1 m/s (2.2 mph)
Light Sensor (M1104)
Range : 0 to 167,731 lux (15,582 lum/ft2)
Accuracy: ±10% typical for direct sunlight (see Light Measurement on page 4 for more details)
(SD-MA-420 or CABLE-4-20mA)
Measurement Range: 0 to 20.1 mA
Accuracy: ±0.001 mA ±0.2% of reading
Resolution： 0.3 µA
(SD-VOLT-2.5 or CABLE-2.5-STEREO)
Measurement Range: 0 to 2.5 V
Accuracy: ±0.1 mV ±0.1% of reading
Resolution： 40 µV
(SD-VOLT-05 or CABLE-ADAP5)
Measurement Range: 0 to 5.0 V
Accuracy: ±0.2 mV ±0.3% of reading
Resolution： 80 µV
(SD-VOLT-10 or CABLE-ADAP10)
Measurement Range: 0 to 10 V
Accuracy： ±0.4 mV ±0.3% of reading
Resolution： 160 µV
(SD-VOLT-24 or CABLE-ADAP24)
Measurement Range: 0 to 24 V
Accuracy： ±1.0 mV ±0.3% of reading
Resolution： 384 µV
Logger
Operating Range: -20° to 70°C (-4° to 158°F)
Radio Power: 1 mW (0 dBm)
Transmission Range : Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard: Bluetooth Low Energy (Bluetooth Smart)
Logging Rate : 1 second to 18 hours
Logging Modes: Fixed interval (normal, statistics) or burst
Memory Modes: Wrap when full or stop when full
Start Modes: Immediate, push button, date & time, or next interval
Stop Modes: When memory full, push button, date & time, or after a set logging period
Restart Mode: Push button
Time Accuracy: ±1 minute per month at 25°C (77°F)
Battery Type: Two AAA 1.5 V alkaline batteries, user replaceable
Battery Life: 1 year, typical with logging interval of 1 minute and Bluetooth Always On enabled; 2 years, typical with logging interval of 1 minute and Bluetooth Always On disabled; and temperatures between 0° and 50°C (32° and 122°F). Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
Memory: 4 MB (1.9 million measurements, maximum)
Full Memory Download Time: Approximately 4 to 15 minutes depending on the mobile device; may take longer the further the device is from the logger
LCD: LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range
Size: 11.28 x 5.41 x 2.92 cm (4.44 x 2.13 x 1.15 in.)
Weight: 123 g (4.34 oz)
Environmental Rating: IP54
