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)
