96
96
IM 54011-E
Approx. 1 month (measurement intervals = 1 minute) (when the RS-232-C
cable is not connected.)
Approx. 1.5 months (measurement intervals = 10 minutes) (when the RS-232-
C cable is not connected.)
TIP
Approx. 1 day when the RS-232-C cable is connected using collector or logging function.
(The battery life varies greatly with the quality of batteries used and the operating conditions. Shown here are
references for the case when ANSI AA (IEC LR6) alkaline batteries of the same model as those that come with the
TM20 are used and the when TM20 is used under room temperature.)
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Functions
Measurement mode and interval
Collector mode
While the [LOG] sign is off, measurements will be saved in the internal memory if the [Memory] key is pressed
under a condition where an optional tag is being displayed on the screen. A tag name must consist of maximum
eight alphanumeric characters. The maximum number of tags is 50. Measurement intervals: Minimum 0.5 second
when using only 1 channel; minimum 1 second when using 2 channels.
Person (operator) names: Up to 10 names of up to 8 alphanumeric characters can be set.
Logging mode
While the [LOG] sign is on, measurements will be saved in the internal memory if the [Memory] key is pressed
under a condition where an optional log is being displayed on the screen. A log name must consist of maximum
eight alphanumeric characters. The maximum number of logs is 10. The measurement period depends on the
remaining capacity of the internal memory. The measurement interval should be greater than 1 second and less
than 24 hours.
Capacity of the internal memory
5000 pieces of data with the collector function solely. If using only the logging function, the maximum data
capacity is 20000 pieces.
However, the measured data collected either with the collector function or with the logging function can co-exist
in the internal memory.
Display
Semi-transmission type liquid crystal display (LCD)
8 characters x 2 lines dot matrix display section and icon display section
Display light
Two backlight LEDs for the display section. 10 seconds of duration from the moment when any key is operated
(factory setting: OFF).
Clock function
Controls the date (internal data) and time (internal data and display). The accuracy is within 1 minute per month.
Alarm function
This function can be set to the upper-limit temperature and lower-limit temperature. In both cases, it can be set so
either the alarm is turned on if the temperature falls within or outside the specified range.
Calculation function
The maximum, minimum, or average within the same tag or log file can be calculated.
The difference between values simultaneously sampled from channels A and B can be displayed.
Key operation sound function
Possible to set on or off of the buzzer sound when the keys are operated (factory setting: ON).
Auto power-off time
Selectable from 5, 10, 20, and 30 minutes, or infinite (factory setting: 5 minutes)
Low battery voltage alarm
A battery symbol turns on if the set LR6 alkaline dry cell almost expires.