Product Description

HYGRO-ANEMOMETER

MODEL: 261

Customer Approved By: Prepared By:

CHY FIREMATE CO., LTD.

NO.3 SHENG-LI 1ST STREET, HSIN-TIEN VILLAGE,

JEN-TE HSIANG, TAINAN HSIEN, TAIWAN R.O.C.

TEL: 886-6-2794811 FAX: 886-6-2700227

E-Mail:

chy@ksts.seed.net.tw

Ver. 1.2 091310

Bruce Hsieh

Engineer Manager

CHY

FEATURES

Built-in accurate NTC temperature.

MAX/MIN/AVG and HOLD functions.

%RH humidity measuring, Dew point and wet bulb.

Auto-power off.

Backlight function.

Protective cap for safe storage.

Attached with carrying strap.

Storage temperature:

-20°C to 60°C(-4°F to 140°F

), 0 to 80% R.H. with

battery removed from meter.

Low battery indication:

The “

” is displayed when the battery voltage drops

below the operating level.

Battery:

1.5Vx2pcs AAA size.

Dimensions:

24.7mm(T)x50.9mm(W)x 132.9mm(H).

Weight:

Approx. 119g including batteries.

SPECIFICATIONS

Operating environment:

-20°C to 60°C(32°F to 122°F) at

<70% R.H.

Measurement rate:

1 time/second.

WIND VELOCITY

Ranges:

0.4 to 20 m/s, 80 to 4000 ft/m

Resolution:

0.1 m/s, 1 ft/m

Accuracy:

Stated accuracy at 23°C±5°C(73.4°F±9°F),

<70% R.H.

±0.2 m/s + 2% of reading

±40 ft/m + 2% of reading

Temperature Coefficient:

0.1 times the applicable

accuracy specification per °C

out of 18°C to 28°C(64°F

to 82°F).

AIR TEMPERATURE

Range:

-20°C to 60°C, -4°F to 140°F

Resolution:

0.1°C / 0.1°F

Accuracy:

Stated accuracy at 23°C±5°C(73.4°F±9°F),

<70% R.H.

±0.5°C for 0°C to 45°C

±1.0°C for -20°C to 0°C, 45°C to 60°C

±1.0°F for 32°F to 113°F

±2.0°F for -4°F to

32°F, 113°F to 140°F

Temperature Coefficient:

0.1 times the applicable

accuracy specification per °C

out of 18°C to 28°C(64°F

to 82°F).

RELATIVE HUMIDITY

Range:

0% to 100% RH

Resolution:

0.1%

Accuracy:

Stated accuracy at 23°C±5°C(73.4°F±9°F),

<70% R.H.

±2.5% at 25°C(77°F), 10% to 90% RH

±5% at 25°C(77°F), 0% to 10% RH, 90% to 100% RH

Sensor Response Time for 90% of Total Range:

60sec typical.

Sensor Hysteresis(excursion of 10% to 90% to 10%

RH):

±1%RH typical.

Temperature Coefficient:

0.1 times the applicable

accuracy specification per °C

out of 18°C to 28°C(64°F

to 82°F)