osCommerce My Account  Cart Contents  Checkout  
  Top » Catalog » Process Insrument » Pressure Instrument » Pressure Recorder/Logger » DS1921G My Account  |  Cart Contents  |  Checkout   
Health Instrument-> (16)
Laboratory Instrument-> (88)
Maintenance/Engineering Instrume-> (237)
Measurement Instrument-> (458)
Process Insrument-> (447)
  Cement Tester (1)
  Construction (10)
  Depth Gauge (1)
  Flashlight (1)
  Flow Meter (8)
  Fruit Ripeness Tester (1)
  Gloss Checker (7)
  Hardness Test Kit (1)
  Hardness Tester (24)
  Hipot Tester (5)
  Inspection Mirror (4)
  Moisture Balance (57)
  Oscilloscope (4)
  Pressure Instrument-> (59)
    Manometer (10)
    Pressure Gauge/Indicator (21)
    Pressure Recorder/Logger (17)
    Pressure Transmitter/Controller (11)
  Process Controller (2)
  Push Pull Force Gauge (9)
  Salt-Sugar Instrument (18)
  Screwdriver (2)
  Static Meter (20)
  Surface Resistance/ Resistivity (12)
  Surface Roughness Tester (14)
  Tablet Hardness Tester (6)
  Temperature Instrument (102)
  Torque Instrument (50)
  Turbidity Meter (1)
  Viscometer (2)
  Waterbath (2)
Safety Intrument-> (263)
Weigh Scale and Load Cell (60)
What's New? more
Vibration Meter “Landtek” Model VM-6380-2
Vibration Meter “Landtek” Model VM-6380-2
Quick Find
Use keywords to find the product you are looking for.
Advanced Search
Tell A Friend
We'd love it if you tell a friend about us Just enter their email address and click the envelope (you can also add a messege on the next page).
Shipping & Returns
Privacy Notice
Conditions of Use
Order & Payment
Contact Us
SSL Certificate
Free SSL Secured By StartCom
Thermochron iButton Device “Maxim” Model DS1921G


Thermochron iButton Device


General Description

The Thermochron® iButton® device (DS1921G) is a rugged, self-sufficient system that measures temperature

and records the result in a protected memory section. The recording is done at a user-defined rate, both as

a direct storage of temperature values as well as in the form of a histogram. Up to 2048 temperature values

taken at equidistant intervals ranging from 1 to 255 min can be stored. The histogram provides 63 data bins

with a resolution of 2.0°C. If the temperature leaves a user-programmable range, the DS1921G also records

when this happened, for how long the temperature stayed outside the permitted range, and if the temperature

was too high or too low. An additional 512 bytes of battery-backed SRAM allow storing information pertaining

to the object to which the DS1921G is associated. Data is transferred serially through the 1-Wire® protocol, which

requires only a single data lead and a ground return. Every DS1921G is factory lasered with a guaranteed unique,

electrically readable, 64-bit registration number that allows for absolute traceability. The durable stainless steel

package is highly resistant to environmental hazards such as dirt, moisture, and shock. Accessories permit the

DS1921G to be mounted on almost any object including containers, pallets, and bags.



Temperature Logging in Cold Chain, Food Safety, Pharmaceutical, and Medical Products


Benefits and Features

§  High Accuracy, Full-Featured Digital Temperature Logger Simplifies Temperature Data Collection and

     Dissemination of Electronic Temperature Record

-   Accuracy +/-1°C from -30°C to +70°C (See the Electrical Characteristics for Accuracy Specification)

-   Digital Thermometer Measures Temperature in 0.5°C Increments

-   Built-In Real-Time Clock (RTC) and Timer Has Accuracy of +/-2 Minutes per Month from 0°C to +45°C

-   Automatically Wakes Up and Measures Temperature at User-Programmable Intervals from 1 Minute to 255 Minutes

-   Logs Consecutive Temperature Measurements in 2kB of Datalog Memory

-   Records a Long-Term Temperature Histogram with 2.0°C Resolution

-   Programmable Temperature High and Temperature Low Alarm Trip Points

-   Records Up to 24 Timestamps and Durations When Temperature Leaves the Range Specified by the Trip Points

-   Individually Calibrated in a NIST-Traceable Chamber

-   Complies to Standard EN12830

-   512 Bytes of General-Purpose Battery-Backed SRAM

§  Rugged Construction Survives Harsh Environments

-   Water Resistant Enclosure (IP56) or Waterproof if Placed Inside DS9107 iButton Capsule (Exceeds Water Resistant

 3 ATM Requirements)

-  CE, FCC, and UL913 Certifications

§  Simple Serial Port Interfaces to Most Microcontrollers for Rapid Data Transfer

-  Communicates to Host with a Single Digital Signal Up to 15.4kbps at Standard Speed or Up to 125kbps in

       overdrive Mode Using 1-Wire Protocol


Absolute Maximum Ratings

IO Voltage Range Relative to GND

-0.5V to +6V


IO Sink Current



Operating Temperature Range

-40°C to +85°C*


Storage Temperature Range

-40°C to +50°C*


* Storage or operation above +50°C significantly reduces battery life.



This product was added to our catalog on Friday 06 December, 2019.
Shopping Cart more
0 items
Manufacturer Info
Other products
Notifications more
NotificationsNotify me of updates to Thermochron iButton Device “Maxim” Model DS1921G
Tell A Friend
Tell someone you know about this product.
Reviews more
Write ReviewWrite a review on this product!
Thai English
Credit card accepted


Nanomachinery Co., Ltd.
4, Soi Petchkasem 100 ,Phetchkasem Rd. ,Bangkaenue ,Bangkae ,Bangkok, 10160, THAILAND.
Tel : 086-322-6876 ,02-421-9927 ,Fax : 02-809-2591 E-mail : pongthorn@nano-machinery.com
Copyright © 2005 Nano Machinery
Powered by Nano Machinery