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7.5 Units
This mode is identified by “Units: C/Ω/F/K/R” that appears on the display.
This mode allows you to select the unit of measurement: C for degrees Celsius,
Ω for resistance in ohms, F for degrees Fahrenheit, K for Kelvin, and R for
Rankine. The Up and Down buttons are used to select one of the displayed
units. The underline cursor indicates which of the units is selected. The ENT
button stores the selection. If the MODE button or CLR button is pressed with
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out pressing ENT the unit remains unchanged. Once the unit is selected, subse
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quent measurements appear in that unit. The Min/Max and Delta(x) values
are automatically converted when changing to C, K, F, or R units.
When measuring in units of ohms, make sure that the appropriate probe type
has been selected in the Cal Mode menu. For example, to measure a sensor be
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tween 0 and 400 ohms, set the units to ohms and select the probe type "CVD".
To measure a sensor between 400 and 500K ohms, set the units to ohms and se
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lect the probe type "THERM".
7.6 Rate
This mode is identified by “Rate: 00000" that appears on the display.
This mode allows you to set the samples that are transmitted through the serial
port. The sample for a 2-wire and a 4-wire probe is approximately one second
and for a 3-wire probe is approximately two seconds. For example, if the rate is
set to 2, every other sample is sent through the serial interface. Note: If the
probe wire is set to 3, the time between samples is twice as long. A value of 0
disables transmission. The Up and Down buttons are used to increase or de-
crease the value for the underlined digit. The ENT button moves to the next
digit. If the ENT button is pushed when the last digit is underlined, the setting
is stored. If the MODE button or CLR button is pressed, the value remains un
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changed. Once the value is set, measurements are transmitted through the serial
port at the given interval.
7.7 Resolution
This mode is identified by “Resol: XXX.XXX” that appears on the display.
This mode allows you to set the resolution of measurements to one, two, or
three digits after the decimal point. The Up and Down buttonsareusedtoin
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crease or decrease the resolution setting. The ENT button stores the setting. If
the MODE button or CLR button is pressed, the setting remains unchanged.
Once the resolution is set, measurements are displayed and transmitted from
the serial port at the given resolution if possible. The resolution may be reduced
if necessary for large values of temperature or resistance.
1521 Handheld Thermometer Readout
User’s Guide
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