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Onset HOBO® MX2202 Pendant Bluetooth Light and Temperature Data Logger Specifications
| Data Channels | 1 Temperature Channel, 1 Light Channel |
| Light | Measurement Range: 0 to 167,731 lux (15,582 lum/ft2) Accuracy: ±10% Typical for Direct Sunlight |
| Temperature | Measurement Range (Air): -20°C to 70°C (-4°F to 158°F) Measurement Range (Water): -20°C to 50°C (-4°F to 122°F) Accuracy: ±0.5°C at -20°C to 70°C (-4°F to 158°F) Response Time (Air): 17 Minutes typical to 90% in Air Moving @ 1 m/s (2.2 mph) unmounted Response Time (Water): 7 Minutes typical to 90% in Stirred Water, unmounted Resolution: 0.04°C (0.072°F) Drift: <0.1°C (0.18°F) |
| Data Storage Capacity | 96,000 Temperature Readings (When Bluetooth Communications Not Available or Data Logger in Water) |
| Buoyancy (Fresh Water) | 2g (0.07 oz) positive |
| Logging Mode | Fixed Interval (Normal, Statistics) or Burst |
| Memory Mode | Wrap when Full or Stop When Full |
| Start Mode | Immediately, Push Button, Date & Time or Next Interval |
| Stop Mode | Wrap When Data Storage Full, Push Button, Date & Time or After Set Interval |
| LED Indicators | Alarm: Visual LED Status: Visual LED |
| Sampling Rate | 1 Second to 18 Hours (User-Specified) |
| Power Source | CR2032 3 Volt Lithium Battery (User-Replaceable) |
| Battery Life | Bluetooth ALways Off Disabled in Software: 1 Year typical @ 1 Minute Sampling Rate Bluetooth Always Off Enabled in Software: 2 Years typical @ 1 Minute Sampling Rate Note: Dependant Upon Environment, Operating Range, Logging Interval, Remaining Connected with the App, Excessive Downloads and Paging My Impact Battery Life |
| Time Accuracy | ±1 Minute per Month @ 25°C |
| Communications | Type: Bluetooth Wireless Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) Transmission Range: Up to 30.5 Meters (100 ft) Line of Sight in Air Radio Power: 1 mW (0 dBm) Note: Blue Transmission in Air Only |
| Software | HOBOmobile 1.7 Software App for iOS and Android Note: Bluetooth 4.0 is Required on your Mobile Device (Phone or Tablet) |
| OS Compatibility | Android Phones and Tablets iPhone, iPad, iPod Touch with iOS 7.1 or Later Bluetooth 4.0 or Later |
| Operating Range | Temperature: -20°C to 70°C (-4°F to 158°F) |
| Standards Compliance | CE |
| Environment | Primarily Designed for Outdoor Usage |
| Wetted Materials | Polypropylene Case, EPDM O-Ring |
| Weight | 12.75 grams (0.45 oz.) |
| Dimensions | 3.35 cm x 5.64 cm x 1.60 cm (1.32" x 2.22" x 0.63") - Without Mounting Tabs |
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Questions
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Answer:
This logger will only give you light level values in lux. It is not a Photosynthetically Active Radiation (PAR) sensor.
This same company does make a PAR sensor that is designed to be used with their weather station loggers however it is not designed for use under water.
Here is a link to it: https://www.microdaq.com/onset-hobo-par-light-sensor.php
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Answer:
I'm afraid that this product isn't sensitive enough to work well for that application. To accurately measure levels that low I'm thinking you will need to most likely look for a high accuracy light sensor and not one that is built into a data logger. Most sensors have a scalable output that you can run into a data logger so you can still record your levels.
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Answer:
This logger records light levels in Lux and has a range of 0 to 167,731 lux. The typical accuracy in direct sunlight is +/-10%.
As long as these values work for your needs the logger would be fine for your application.
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Answer:
At this time this product doesn't have that capability. The wireless connectivity of this product is intended only as a way to configure the logger and download data without having to use an interface.
