SATO SK-270WP-K User manual

Instruction Manual
Waterproof Digital Thermometer
Model SK-270WP-K
S.05

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Thank you for purchasing the SK-270WP-K Waterproof Digital Thermometer.
- This product is designed to measure temperature connecting to a dedicated probe. Do not use it for other
purposes.
- Read this manual thoroughly before using the thermometer. Keep the manual in a safe place for future
references whenever necessary.
Warning
The SK-270WP-K digital thermometer is not explosion-proof. Never use it in an atmosphere containing
flammable gases.
Beware of explosion!
There is a risk of explosion. Take extreme care.
Whenever you have questions, contact us or the dealer from which the unit was purchased.
1. Notes on Use
Be sure to observe the following precautions in order to use this unit correctly.
- Do not use this unit as a clinical thermometer.
- Do not drop this unit or apply impact to it. This unit is a precision instrument.
- Never disassemble or modify this unit. Doing so may result in failure.
- Do not use this unit in water.
- Do not use this unit in a place exposed to direct sunlight or near heating equipment. Doing so may result in
deformation of the casing or failure.
- Do not use this unit in an environment where electrical noise is generated. Doing so may result in unstable
display or larger errors.
- Do not forcibly pull, bend, or bundle the sensor cord. Placing a heavy object on the sensor cord, heating or
scratching the cord may also damage it.
- If this unit is not to be used for a long time, always remove the batteries from the unit. Otherwise, the batteries
may leak fluid, resulting in failure.
- If the unit becomes dirty, wipe it with a tightly wrung cloth that has been dipped in warm water with neutral
detergent. Do not wash this unit it in water.
- Be sure to use this unit within the specified measurement range. Using the unit outside the specified
measurement range will result in failure or damage.
- The penetration type probe has a sharp pointed end so that it can penetrate into the measuring object; as this
pointed end could cause accidental injuries, handle the probe with due care.
- Do not use sodium hypochlorite at metallic parts such as probe connector. The sodium hypochlorite is
effective for disinfecting norovirus, however it corrodes metals. If it adheres to the unit, completely wipe it off
with a wet cloth.
** For repair or calibration, contact us or the dealer from which the unit was purchased.
2. Overview
The SK-270WP-K is a waterproof digital thermometer to which a dedicated thermistor sensor probe is
connected. Optional probes can be interchangeably connected with main unit.

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3. What in the box?
After unpacking, please check the box contents. If you find any item missing, please contact us or the dealer
you purchased.
The following items are included in the box.
* Waterproof digital thermometer
□ Main unit 1 pc.
□ AAA size alkali battery 2 pcs.
□ Instruction manual 1 pc.
□ Vinyl cover 1 pc.
□ Neck strap 1 pc.
* S270WP-01 Standard probe (for No. 8078-40 with a standard probe type)
□ Temperature probe 1 pc.
□ Test result 1 pc.
□ Instruction manual 1 pc.
□ Vinyl pouch for probe 1 pc.
4. Features
- Simple Operation
Measurement can start just after the power is ON without any set-up
- Waterproof function
When connecting the main unit and a probe, it conforms to "Protection level IP67 in JIS C 0920" and can be
washed with running water.
NB. This model is not suitable for use under water.
- Impact resistance
The outer protection rubber of the case reduces the impact caused by the fall
- Display of serial number and calibration date.
The serial number of the unit and the calibration date are indicated in the display section after the power in ON.
You can easily check the calibration date of the last time.
- Interchangeability of optional probes.
Optional probes can be interchangeably used with a main unit.

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5. Names of Section
Front view Rear view
Display section
Key operation section
① POWER key
- Press this key to turn the main unit on. Press the key again
to turn it off.
② HOLD key
- Press this key to hold (freeze) measured value. In the
setting mode, press this key to subtract set value.
① Displays the measured value or error message
② : Shows when Auto power-off function is being set
③ HOLD : Lights while measured value is being held
④ Low battery mark : Blinks when battery power is insufficient.
①
②
③
④
① ②
Lid of battery compartment
Protection rubbe
r
Hook for neck st
r
ap
Displa
y
section
Ke
y
operation section
Connecter for probe

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6. How to Use
6-1. Loading Batteries
Set or replace the batteries with the following procedure.
(1) Rotate the screw on the battery lid on the back of the main unit
counterclockwise using a blade screwdriver or a coin until it comes
free and then remove the lid.
* Be careful not to be missing the rubber packing that is in the groove
of the battery compartment.
* If the body is wet, remove the battery lid after wiping off the moisture in
order to prevent water invasion into the battery compartment.
* The screw does not come off the lid. Pulling it by force will cause breakage.
(2) Load the batteries so that each positive or negative terminal faces the correct direction as shown in the
battery compartment.
(3) Reinstall the battery lid after confirming that the rubber packing is properly in the groove and close the lid
in the reverse order of the removal procedure.
Cautions
 Firmly attach the battery lid putting the rubber packing in the groove and secure the screw. Otherwise,
waterproofness will not be guaranteed.
 The replacement batteries must be new and of the same type. Mixed use of different types or new and old
batteries could cause an explosion or leakage.
 Do not dispose of used batteries in a fire. Doing so could cause the batteries to explode, resulting in
injuries or burns.
 Keep the batteries out of the reach of children. If a child accidentally swallows a battery, contact a doctor
immediately.
 For environmental protection, dispose of used batteries in compliance with local rules and regulations.
 This thermometer has a sealed structure. Rechargeable batteries must not be used. Gas could be
generated in the battery, resulting in an explosion or fire.
6-2. Putting Vinyl Cover onto the Thermometer
The unit comes with a vinyl cover to keep it clean, and to protect the unit from damage if dropped.
(1) Open the mouth of the vinyl cover and place the unit in it so that the side with a slit comes to the back of the
unit.
(2) Pass the connector and the wall-mount hook of the unit through the hole on the upper surface of the vinyl
cover, and then insert the strap at the end of the cover into the slit to close the cover.
Note: Static electricity could build up under the vinyl cover, resulting in unstable readings. If this happens,
remove the vinyl cover before using the unit.
6-3. Install the neck strap
Install the neck strap as shown in the following figures.
(1) Run the string through the hook
(2) Pass the strap through the ring string.

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6-4. Connecting the Temperature Probe
(1) While the unit is turned off, insert the probe connector into the unit by aligning the convex part of the probe
connector with the concave part of the connector on the unit.
(2) Turn the nut of the probe connector clockwise to secure the connector.
(3) To disconnect the probe, turn the nut counterclockwise to remove it. Then pull the probe connector straight
out.
Important: To protect the temperature probe, make sure
that the unit is turned off before installing or
removing the probe.
Cautions
 Never forcefully rotate or pull the connector to avoid the causes of trouble.
 The inside of the probe connector is not waterproof. When removing or connecting the probe from the
main body, don’t do with wet hands and in places subject to water.
6-5. How to measure temperature
(1) Connect the probe to the main unit and turn the power ON.
After all characters are lit in the display section, serial number of the unit and the calibration date are
indicated. Then measured value is indicated (temperature measurement mode).
NB. * If the probe is disconnected when power is turned on, error message "Er2" will be displayed.
* Factory default setting of the calibration date is "- - - -" When you require us to calibrate or repair
the unit, the calibration date will be indicated after the calibration or repair is done at our factory.
(2) Insert the sensing stem into the object to be measured.
To measure temperature precisely, insert the sensing stem to the depth of about 15 times as deep as the
diameter of stem (ex. deeper than 45 mm in the 3mm dia. probe) by reason that the sensor will be less
affected by the open air around the sensing stem.
(3) After the measurement, press the POWER key again to turn the power will OFF.
Cautions
- Be careful not to burn yourself when measuring high temperature.
- If you need to measure both objects having a large difference (high and low temperatures), do not continuously
carry on both measurements. Return the temperature of the temperature sensor (probe) to the normal
temperature once and then start next measurement. Otherwise, the temperature sensor deterioration will be
accelerated
- A sudden change of the ambient temperature of the unit may adversely affect the measurement accuracy.
For the accurate measurement, start the measurement after leaving the unit in the ambient temperature.
SK-270WP

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7. Functions
7-1. HOLD Functions
Use this function for easier reading if the temperature changes too frequently during measurement.
① Press the HOLD key once to hold (freeze) the measured value in a measurement. HOLD will show in display
section and the measure value is being hold,
② Press the HOLD key again to release the Hold function. HOLD will dis appear and it returns to the normal
measurement mode.
7-2. Auto Power-off Function
The power will be turned off automatically if the unit is not operated for approx. 60 minutes. This function
conserves battery power if you forget to turn the power off.
① Turn the power off and keep pressing the POWER key while pressing HOLD key. Then the power is turned
on and the auto power-off function has been activated and is indicated in the display section.
NB. Even if the power is turned off, the Auto-power off function is still active.
② To release the Auto Power-off Function, keep pressing the POWER key
while pressing HOLD key under the power is turned off. Then the
power of the unit turns on and the Auto Power-off Function has been
released. At that time, mark is not displayed.
8. Warnings for low battery
When the batteries are exhausted, mark will blink. Place the batteries with new ones.
Otherwise, measured value may display incorrectly.
9. Error Message
If an error occurs, one of the error codes below will be shown on the temperature display section.
Error code Causes Remedy
Measured value exceeds
the Hi or Lo value.
Bring the value within the measuring range.
Measured value is higher
than display range
Measured value is lower
than display range
Internal processing is
abnormal
 Remove batteries. Then load batteries again after leave it for
a while
 Replace the batteries to new ones
A sensor signal is
abnormal.
Turn the power off once. Connect the probe securely and turn
the power on.
Probe is not connected or
probe is failure.
This error code is displayed when power is turned on without
connecting the probe. Connect the probe.
If the error code is displayed although the probe has been
connected, stop using it and contact us or the dealer.
If the problem still persists, please contact us or the store where you purchased this product.

10. Specifications
Model Waterproof Digital Thermometer SK-270WP-K
Cat. No. 8078-40
Display range -50.0 to 300.0°C
(Measuring range is different depending on the probes connected)
Display Accuracy When operation ambient is 0 to 40°C
± (0.1 + 1 digit) at -40.0 to 200.0°C
± 0.5°C at other than above
When operation ambient is -10 to 0.1°C, 40.1 to 60°C
± (0.2 + 1 digit) at -40.0 to 200.0°C
± 1°C at other than above
Resolution 0.1°C
Sampling time About 0.5 to 1 sec.
(When the temperature changes a lot, the sampling time is 0.5 sec.
and when it is calm, it automatically changes to 1 sec.)
Grade of protection from water Conforming to JIS C0920 Protection IP67 rated
(when the probe is connected to the unit)
Operation ambient -10 to 60°C, less than 80%rh (no condensing)
Storage ambient +10 to 60°C (no condensing)
Operational Functions HOLD, Low battery mark, Auto power-off
Power requirements 3VDC ("AAA" size alkali battery x 2 pcs.)
Battery life About 1000 hours continuous
Materials PC resin
Dimensions 70(W)  171(H)

40(D) mm (exclusive of connector)
Weight Approx. 155g (including batteries)
Standard Accessories S270WP-01 standard probe, AAA size alkaline battery x 2 pcs
vinyl cover, neck strap, instruction manual
* All specifications and appearance subject to change with or without notice for improvement purpose.
* No. 8078-42 digital thermometer is without probe type. S270WP-01 probe is not attached.
WARRANTY POLICY
Warranty
Our products are warranted to be free from defects in materials and workmanship for a period of one year from
date of delivery. If repair or adjustment is necessary and has not been the result of abuse or misuse within the
one-year-period, please return the units on - Freight Prepaid – basis and correction of the defect will be made
without charges. We alone will determine if the product problem is due to deviations or customer misuse.
Out-of-warranty products will be repaired on charge basis.
Warranty during transportation
The warranty during transportation only applies to the products that we arrange the shipment. The case that the
products had been purchased in domestic and were sent to overseas by the purchaser is out of warranty.
Return of items
Authorization must be obtained from us before returning items for any reason. When applying for authorization,
please include data regarding the reasons the items are to be returned.
3-4, Kanda-kajicho, Chiyoda-ku, Tokyo 101-0045 Japan
URL: http://www.sksato.co.jp/english/