DS1921G

Maxim iButton Temperature Loggers

Maxim iButton Temperature Loggers

Description

The Maxim iButton temperature logger is a self-contained, self-powered, and field-rugged package that measures just over 0.5 inches in diameter.

Features

  • Non-volatile memory stores temperature measurements
  • Each iButton has a unique ID to ensure traceability
  • Durable stainless steel housing is highly resistant to dirt, moisture and shock
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$39.95
Usually ships in 1-2 weeks

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Details

The Maxim iButton temperature logger is a self-contained, self-powered, and field-rugged package that measures just over 0.5 inches in diameter. Based on iButton technology, the logger consists of a computer chip, temperature sensor, and battery enclosed in a 16mm thick stainless steel can. The small size of the temperature data logger allows it to be securely hidden in important monitoring areas. Each iButton has a unique ID to ensure traceability. The logger uses its stainless steel can as an electronic communications interface. By simply touching the logger to the DS1402 USB reader, the user can setup deployments, upload data, and view the logger status using Maxim OneWireViewer Software or 3rd party programs.

iButton loggers are rugged enough to withstand environmental hazards, indoors or outdoors. The durable stainless steel package is resistant to dust and moisture. A full line of accessories are available for mounting and deploying the loggers including adhesive pads, keychain fobs, and underwater housings. Common applications include water temperature profiling, cargo transportation monitoring, ambient air monitoring, animal roosting behavior studies, new product research & development, wide-area temperature networks and much more. With so much capability in a tiny package, the applications are endless!

Image Part # Product Description Price Stock Order
Maxim iButton Temperature Loggers DS1921G iButton temperature logger with 2,048 dataset memory & +/-1 C accuracy, -40 to +85 C range
$39.95
Usually ships in 1-2 weeks
Maxim iButton Temperature Loggers DS1921H iButton temperature logger with 2,048 dataset memory & +/-1 C accuracy, +15 to +46 C range
$39.95
In Stock
Maxim iButton Temperature Loggers DS1921Z iButton temperature logger with 2,048 dataset memory & +/-1 C accuracy, -5 to +26 C range
$39.95
In Stock
Maxim iButton Temperature Loggers DS1922L iButton temperature logger with 8,192 dataset memory & +/-0.5 C accuracy, -40 to +85 C range
$79.95
Usually ships in 1-2 weeks
Maxim iButton Temperature Loggers DS1925 iButton temperature logger with 125,440 dataset memory & +/-0.5 C accuracy, -40 to +85 C range
$99.95
In Stock
Maxim iButton Temperature Loggers DS1922T iButton temperature logger with 8,192 dataset memory & +/-0.5 C accuracy, 0 to +125 C range
$129.95
In Stock
Maxim iButton Temperature Loggers DS1922E iButton temperature logger with 8,192 dataset memory & +/-0.5 C accuracy, +15 to +140 C range
$169.95
Usually ships in 1-2 weeks
Image Part # Product Description Price Stock Order
NexSens DS1402 iButton USB Reader DS1402 iButton USB reader with 8' extension cable
$49.95
In Stock
NexSens DS9096P iButton Adhesive Pads DS9096P iButton adhesive pads, 12 ea.
$4.95
In Stock
NexSens DS9093S iButton Wall Mount DS9093S iButton wall mount
$1.62
In Stock
NexSens DS9093N iButton Keychain Fob DS9093N iButton keychain fob, 5 pack
$14.95
Usually ships in 3-5 days
NexSens DS9010K iButton Underwater Housing DS9010K iButton underwater housing, black
$39.95
Usually ships in 3-5 days

Questions & Answers

| Ask a Question
Can I change the units from Celsius to Fahrenheit?
The DS1921G iButton will only measure temperature in Celsius, however, when used with micro-T Software, the software can output the data in Celsius or Fahrenheit.
Is the DS1921G iButton waterproof?
No, all iButtons are only water resistant with an IP56 rating. When conducting underwater or underground studies, it is recommended to use the iButton Underwater Housing (part #DS9010K).
How do I recharge the DS1921G?
The iButton temperature loggers cannot be recharged or replaced. The devices will not operate once the battery has been drained. These loggers have a maximum battery life of up to 11 years depending on log interval length and ambient temperature, and the DS1921G specifically has an expected battery life of 5-10 years.
Does the iButton need to be removed from its mount to transfer data to a PC?
Not necessarily. As long as the USB reader is in contact with both the printed side of the iButton and the PC, the iButton can transfer data, accept commands and redeploy.
How do I clear the memory?
The memory on the DS1921 iButton temperature logger is cleared once the logger is commanded to be "redeployed".
What happens if the memory becomes full?
If the the "roll-over" function is disabled, the memory on the DS1921G will log the first 2048 data points. Any data past that point will not be stored. If "roll-over" is enabled, once the first 2048 data points are filled, the logger begin overwriting the oldest stored data.

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