SATO KEIRYOKI 7542-00 User manual

INSTRUCTION MANUAL

Precision Hair Hygrometer

with Digital Thermometer

M.11

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

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.

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

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

°C/°F

slide switch

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

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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