2
V7490
612-849
Specification
Thermometer
Range
Resolution Accuracy (0 to 40°C)
Internal
sensor
-10°C to +60°C
0.1°C
±1°C
External
sensor probe
-20°C to +70°C
0.1°C
±1°C
Clock
Time keeping
±0.5 secs per day
Specified at a battery voltage of 1.5V and an ambient of 25°C.
Selection of internal sensor or external sensor
probe
This thermometer with two sensors as shown in figure 1. To display the
temperature of the internal sensor the selector switch shown must be
switched to the IN position and to display the temperature of the
external sensor probe, the switch must be in the OUT position. The lead
for the external sensor is normally kept behind the battery cover. This
cover can be released by gently levering the tab located over the word
“BATTERY”.
Setting of the temperature alarms
Slide down the lower half of the front casing to expose the switch panel.
Ensure the SET/LOCK switch is in the SET position and whilst holding
the HI button down, the upper alarm temperature can be set by pushing
the M button until the desired temperature is reached. The display will
only increment so it will be necessary to cycle through the maximum
temperature to set the alarm to a lower value. “HI” will now be displayed
indicating the alarm is set. To cancel or re-set the alarm, push HI and
H buttons simultaneously (with the SET/LOCK switch in the SET
position).
The low alarm is set on the same way except the LO button is pushed
instead of the HI button and LO legend will appear when the low alarm
is set.
When the alarms are set as required put the SET/LOCK switch into the
LOCK position. The
/
switch must be in
position for the alarm
tone to sound.
Both High and Low alarms can be used simultaneously and when the
set points are reached, the alarm sounds for 5 seconds or until the
alarm condition is over (whichever is shorter).
Both alarms can be disabled by putting the
/
switch into the
position.
Setting of the time
Open the lower half of the front as above. With the TIME button
depressed, the clock can be set by pushing the H button for hour
advance and the M button for the minute advance. Holding the H or M
buttons down will result in rapid advance of the digits.
Battery replacement
Open the battery compartment by gently levering the tab above the
word BATTERY to expose the battery.
Replace with a AAA size cell such as RS stock 591-657.
Stand and clip
A desk stand can be accessed by levering out one tab at the bottom of
the rear of the case. The pocket clip can be opened by depressing it
near the top.
Important
Before use open the battery compartment and remove the battery
insulating paper tag. Ensure battery is re-fitted correcttly and close the
battery compartment. The unit is now ready for use.
RS Components shall not be liable for any liability or loss of any nature (howsoever
caused and whether or not due to RS Components’ negligence) which may result
from the use of any information provided in RS technical literature.
RS
Stock No.
