SATO KEIRYOKI 7542-00 Manuale utente
INSTRUCTION MANUAL
Precision Hair Hygrometer
with Digital Thermometer
M.11
1
Thank you for purchasing the precision hair hygrometer with digital
thermometer.
This product is designed to measure ambient humidity and temperature
being mounted on a wall. Do not use it for other purposes.
Read this manual thoroughly before use. Keep the manual in safe place for
future references.
Descriptions
Human hair bundle is an excellent humidity sensor. The human hair extends
and contracts in response to changes of humidity. The movements of the hair
bundle are mechanically magnified and the pointer indicates the humidity
values. This model is an accurate and reliable hygrometer adopting this human
hair bundle.
The temperature sensor is a thermistor. Measured temperature is indicated
with an easy-to-read digital display.
Name of Section
①Scale plate : Scale for humidity. Minimum graduation: 2%RH
②Pointer : Indicates current humidity
③Thermometer : Temperature is digitally displayed
④Hook : Used to mount the unit on a wall
⑤Battery lid : One AA manganese battery (R6P) is used
⑥Ventilation hole : Effective to have accurate measurement
2
Precaution
1. Care in Installation
Never use the instrument in the environments that contain corrosive gas
and in a place subject to much dust. Otherwise, the humidity sensor
(human hair) may deteriorate.
Do not use it near the air conditioner or in direct sunlight. It may result in
malfunctions.
Refrain from using it at a door, window or wall exposed to the air.
Mount it on the vertical wall free from vibration.
Inside temperature of a car extremely increase in summer. Do not leave the
instrument in the car. If so, it may result in malfunctions.
2. Care in Use
15 to 30 minutes are required until the instrument indicates correct values
of ambient temperature and humidity after it has been taken out of the box.
Never disassemble the instrument. Disassembling will be the cause of
trouble.
Be careful not to drop or hit the instrument as it is a precision instrument.
Doing so may not function properly.
The instrument has ventilation holes. Do not cover or brock up the holes for
accurate measurement.
In the time of dry as in winter, it may show the humidity less than 20%, but
this is not a trouble.
When condensed, it may show the humidity more than 100%, but this is not
a trouble.
Do not get wet the instrument as it is not a waterproof construction. Never
use it at a place subject to water splash. If it is wholly covered with vinyl
etc. for waterproof purpose, measured value will not correct.
Use the instrument within the measuring range (0 to 50°C).
Make sure the polarities (+) (-) are correct. Otherwise, the instrument may
become defective.
3
Keep the battery away from children.
Never put the used battery in a fire.
For environmental protection, dispose of used batteries in compliance with
local rules and regulation
3. Maintenance
When the instrument is stained, wipe it clean with a soft cloth. Never use
thinner, benzene, alcohol etc. Use of them will be the causes of
discoloration and crack.
For repair or calibration, contact us or the dealer where this instrument was
purchased from.
How to use
The battery is factory set for monitoring purpose. So the battery life may be
shorter and display becomes dim in a short period of time after use. If so,
replace it with the new battery attached.
1. Replacement of battery
a. Open the lid at the back of instrument
and insert the AA battery.
The positive (+) and negative (-)poles
are shown at the bottom of the battery
compartment.
b. The battery life is about one year.
When the LCD has become dim,
replace it with the new one
4
2. Installation
Mount the instrument with the bracket.
a. Secure the bracket on a wall with the attached screws at three points.
b. Slide the bracket over the instrument so that the bracket hooks are
inserted in the holes on the back of instrument.
＊Alternation of unit temperature with °C - °F
(1) Factory default of temperature indication is °C.
(2) To indicate temperature with °F,slide the °C / °F slide switch to the
right from the third hole at the bottom with use of a screw driver, etc.
(3) To return to °C indication, slide the slide switch to the left.
Hook for installing
instrument
Hook for installing
instrument
Bracket
Hole for mounting
bracket
Hole for mounting
bracket
Ventilating holes
screw
screw
°C/°F
slide switch
5
Specifications
Product
No.7542-00 Precision Hair Hygrometer
With Digital Thermometer
Humidity
Humidity sensor
Human hair bundle
Measuring range
20 to 100%rh
Display
Analog indication
Min. Graduation
2%rh
Accuracy
±4%rh (40 to 80%rh, at 20 ±5°C)
±7%rh (other than above range)
Temperature
Temperature sensor
Thermistor
Measuring range
0 to 50°C
Display
LCD digital display
Resolution
0.1°C
Accuracy
±1.0°C (at 0 to 40°C)
±2.0°C (other than above range)
Sampling frequency
every 10 seconds
Battery life
About one year under normal temperature
Storage ambient
0 to 50°C, 20 to 100%rh, No condensing
(It is desirable to store the instrument in the
ambient with 0 to 40°C and 20 to 80%rh)
Materials of case and bracket
ABS resin
Dimensions
Instrument: φ 135 × 33 (D) mm
Bracket: φ 160 × 4 (D) mm
Weight
about 0.23kg
Standard accessories
Instruction manual
Bracket w/ 3 screws
2 AA batteries (R6P)
(one piece is factory set)
The Specifications and design subject to change or without notice
6
Warranty
1. This product is warranted to be free from defects in materials and
workmanship in the period of one year from the delivery date to the
original purchaser. If repair or adjustment is necessary and has not been
the result of abuse or misuse within the one-year period, please contact our
distributor. Out-of-warranty products will be repaired on charge basis.
2. On the following conditions, products will be repaired on charge basis
even within the warranty period.
a. Defect due to misuse, abuse or mishandling.
b. Defect due to calamities, such as fire, earthquake, theft etc.
c. Defect due to improper repair, alteration and abnormal voltage.
d. Defect of external view, such as damages caused when the instrument is
in use.
e. Replacement of consumables and accessories.
3-4, Kanda-kajicho, Chiyoda-ku, Tokyo 101-0045 Japan
URL: http://www.sksato.co.jp/english/
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