Extech Instruments HW30, RH25, AN25, HT30, HT200 Catalog Page

N Indicates products that are available with optional calibration traceable to NIST. See page 160 for a mplete listing.

Specialty Heat Index/Heat Stress Meters

MULTIFUNCTION HEAT INDEX METERS

Redefining
Heat Index Meters

Whether it’s for the job site or for your

athletes, heat stress is critical. Use

Extech’s Heat Index Meters to monitor safe

conditions during hot and humid days.

HW30 Heat Index

Stopwatch

Digital UP/DOWN timer
displays Temperature,
Humidity, and Heat Index

• User programmable
Heat Index alarm

• Stopwatch/chronograph mode
with 1/100th second resolution

• Fastest/Slowest/

Average Lap recall

• 99 lap counter with

30 lap/split memory

• 10 hour countdown timer
with audible beeper warning
for the last 5 seconds

• Programmable alarm

• Calendar mode displays
day, month, and date

• 12 or 24 hour clock operation

• Complete with 39" (1m) lanyard
and one 3V CR2032 battery

• HW30-NISTL - Limited NIST
available for time function only

RH25 Heat Index

Psychrometer

Convenient pen style
psychrometer monitors
Heat Index during hot humid
days

• Built-in multiparameter
sensor measures Heat Index,
WBGT, Humidity, Ambient
Temperature, Temperature,
Dew Point and Wet Bulb

• User Programmable Heat
Index/WBGT alarm

• Heat Index function measures
how hot it feels when Humidity
is combined with temperature,
air movement, and radiant heat

• Wet Bulb Globe Temperature
(WBGT) function considers
the effects of temperature,
humidity, and direct
or radiant sunlight

• Min/Max/Average

• Data Hold; APO with disable

• Complete with CR2032 battery

AN25 Heat Index

Anemometer

Convenient pen style
Anemometer monitors
Airflow and Heat Index

• Built-in multiparameter sensors
measure Air Velocity,Heat
Index, WGBT, Humidity,
Ambient Temperature,
Dew Point, Wet Bulb,
Temperature, and Windchill

• Mini low friction vane
meausures air velocity

• Heat Index function measures
how hot it feels when Humidity
is combined with temperature,
air movement, and radiant heat

• Wet Bulb Globe Temperature
(WBGT) function considers
the effects of temperature,
humidity, and direct
or radiant sunlight

• MIn/Max/Average

• Data Hold APO with disable

• Complete with CR2032 battery

HT30 Heat Stress

WBGT Meter

Wet Bulb Globe
Temperature (WBGT)
considers the effects of
temperature, humidity and
direct or radiant sunlight

• Heat Stress Index measures
how hot it feels when humidity
is combined with temperature,
air movement, and radiant heat

• Black Globe Temperature
(TG) monitors the effects
of direct solar radiation
on an exposed surface

• In/Out Function displays the
WGBT value with or without
direct sun exposure

• APO with disable

• Built-in RS-232 interface with
optional PC software (407752)

• Complete with two
AAA batteries

HT200 Heat Stress

WBGT Meter

Accurately determine the
Heat Stress level

• Heat Stress Index measures
how hot it feels when humidity
is combined with temperature,
air movement, and radiant heat

• Black Globe Temperature
(TG) monitors the effects
of direct solar radiation
on an exposed surface

• In/Out function displays the
WBGT value with or without
direct sun exposure

• WBGT high/low alarm settings

• Memory stores 50 readings

• Backlit LCD

• Min/Max, Data Hold, and
APO with disable

• Complete with 9V battery
and hard case

SPECIFICATIONS HW30 N RH25 AN25 HT30 N HT200 SPECIFICATIONS

Heat Index 70 to 122°F (22 to 50°C) -50.8 to 401°F (-46 to 205°C) -31 to 401°F (-35 to 205°C) — Heat Index
Temperature 14 to 122°F (-10 to 50°C) -4 to 122°F (-20 to 50°C) 5 to 122°F (-15 to 50°C) Black Globe : 32 to 176ºF (0 to 80ºC) TG-Black Globe: 32 to 176°F (0 to 80°C);

Humidity 1 to 99% 0 to 99.9%RH 5.0 to 95.0%RH 0 to 100% RH 1 to 99%RH Humidity
Dew Point — -108.4 to 122°F (-78 to 50°C) -103 to 122°F (-75 to 50°C) — -31.5 to 120.1°F (-35.3 to 48.9°C) Dew Point
Wet Bulb — -4 to 122°F (-15 to 50°C) 5 to 122°F (-15 to 50°C) -6.9 to 122°F (-21.6 to 50°C) Wet Bulb

ACCESSORIES

407752 Software and Cable

88

88

for HT30

$69.99

Wet Bulb Globe Temperature ­WBGT

Air Velocity — — — — Air Velocity
ft/min (m/s) — — 80 to 4920ft/min (0.4 to 25m/s) — — ft/min (m/s)
mph (km/h) — — 0.9 to 55.9mph (1.4 to 90.0km/h) — — mph (km/h)
knots — — 0.8 to 48.6 knots — — knots
Windchill — — 5 to 122°F (-15 to 50°C) — — Windchill
Timing capacity 9hrs, 59mins, and 59secs — — — — Timing capacity
Basic Accuracy ±5 seconds/day, ±5% RH, ±3°F (1.5°C) ±3%RH, ±1°F/0.6°C ±3%RH, ±2°F/1°C, ±3%FS ±3%RH, ±1.8°F/1.0°C (TA), ±4°F/2°C (TG) ±3%RH, ±1.8°F/1°C (WBGT w/o sun);

CE approved Yes Yes Yes Yes Yes CE approved
Dimensions/Weight 7.6x0.8x1.8" (192x30x45mm)/ 3.8oz (108g) 5.5x1.4x0.7" (140x35x18mm)/ 1.8oz (50g) 6x1.6x0.7" (152x40x18mm) / 2.1oz (60g) 10x1.9x1.1" (254x49x30mm)/4.8oz (136g)

Warranty 1 year 1 year 1 year 1 year 1 year Warranty

— -20.2 to 130°F (-29 to 54.5°C) -20.2 to 130°F (-29 to 54.5°C) 32 to 122ºF (0 to 50ºC) w/o sunlight: 32 to 138°F (0 to 59°C);

Ball: 1.6" (40mm) dia, 1.4" (35mm) high

TA-Air : 32 to 122ºF ( 0 to 50ºC)

w/ sunlight: 32 to 132°F (0 to 56°C)

±2.7°F/1.5°C (w/sun) ±1.5°F/0.8°C (TA),
±1.1°F/0.6°C (TG)

Meter: 11.8x2.8x2" (300x70x50mm)
Ball: 2" (50mm) diameter/ 7.8oz (220g)

Temperature

Wet Bulb Globe Temperature ­WBGT

Basic Accuracy

Dimensions/Weight

89