scigiene RD3305 User Manual

Setting Alarm

1. Press "+" or "-" button to setting high or low alarm.
2. Two alarm functions included:
Heat up Alarm and Cool Down Alarm
Heat Up Alarm – you set the alarm value to 150°C during the temperature being
risen slowly. Then the thermometer will be alarming beep sounds when the
current temperature meets or exceeds the ALARM value 150°C.
Cool Down Alarm – you set the alarm value to -10°C during the temperature
being dropped slowly. Then the thermometer will be alarming beep sounds
when the current temperature meets or exceed the ALARM value -10°C.
3. Press the ON/OFF button once. Then you can turn the deep sound off when
the thermometer is alarming.
4. Press the ON/OFF button once also can turn on the light.

Calibration Procedure

Step 1) Make sure you have a certified reference thermometer that is at least
twice the accuracy of the thermometer to be recalibrated. E.g.,
Step 2) Make sure you have a good high accuracy calibrator that works at 0°C
or preferable over the range you will be using the thermometer. See
Calibrator or SCCAL-2-Calibrator. Again, the calibrator must have precision
better than the test thermometer. For example, ice baths are only barely
acceptable for thermometers
www.scigiene.com for a more detailed explanation.
Step 3) Place both the reference and thermometer(s) to be tested in the
calibrator following the calibrator's instructions precisely and set the calibrator
at 0.0°C. Then wait at least 10 seconds to allow the probes to all stabilize at the
calibrator temperature. If necessary, adjust until the reference thermometer
reads precisely 0.0° C. Wait 10 seconds and then press the Cal button on the
thermometer being calibrated for 2 seconds.
precisely calibrated at 0.0°C.
Step 4) If possible, the reference and test thermometer should be similarly
tested at other points. If these are significantly out of specification the
thermometer should be removed from service.

Alarm Display Hidden

Press the "-"button till the alarm value equal to -40°C, 2.Press one more time
the "-"button, then the alarm display will be hidden as below picture.
1. Use a small coin to open the Battery door and turn it counter-clockwise until
the small triangle feature on top of the battery door is lined up with the "Un-
lock" symbol.
2. Take out the door and replace the battery. Make sure the original o-ring is
inside the battery chamber. Line up the small line feature on top of the battery
door with the "Un-lock" symbol. Then Insert the battery door into the chamber
and turn it clockwise till the small line feature on top of the battery door is lined
up with the "Lock" symbol.
RD0370R
with an accuracy of +-2.0C.
The thermometer is now
HANDHELD DIGITAL THERMOMETER
User Manual
Part #: RD3305
SCCAL-9-
See

Specifications

Measuring Range: 40°F to 572°F/-40°C to 300°C
Accuracy: ±0.5°C (-10°C to 100°C),
±1°C (-20°C to -10°C)(100°C to 150°C) Otherwise ±2°C
Resolution: 0.1°F(0.1°C)
Display Size:32mm X 20mm
Response: 4 seconds – 15 seconds (From 25 °C to 100°C)
Probe: 2 wire PT100 RTD, 150mm x 4mm
Battery: CR 2032 3V Button
Auto-off: 1 hour
Waterproof: IP68
Body: ABS material
This thermometer has been factory calibrated

Features

ON/OFF and Backlight --- Press [ON/OFF] once to power on. Then Press
ON/OFF anytime the unit is on will enable the Backlight for 3 seconds, and
will mute an active alarm.
Press and
ON/OFF for 4seconds to
power down.
°C/°F --- Press °C/°F
button on the back of the
thermometer to select
the desired temperature
unit [Internal switch]
Min/Max--- Minimum
and maximum
temperature value
memories
CAL ---Calibration
"+""-" ---Use this two buttons to set your alarm temperature
Hold the