Extech HT30 Manual de Usario

Extech termómetro HT30

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User's Manual

Heat Stress WBGT Meter

Model HT30

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Introduction

Congratulations on your purchase of Heat Stress WBGT (Wet Bulb Globe Temperature) Meter. This

meter measures and displays Heat Stress Index (WBGT), which is how hot it feels when humidity is

combined with temperature, air movement, and direct or radiant sunlight. Black Globe Temperature

(TG) monitors the effects of direct solar radiation on an exposed surface. It also measures air

temperature (TA) and Relative Humidity (RH). Additional features include: selectable units of °F/°C,

Auto power off with override, and a built-in RS-232 interface with optional 407752 Windows®

software. This meter is shipped fully tested and calibrated and, with proper use, will provide years of

reliable service.

Meter Description

1. Black Globe temperature sensor

2. RH and Temperature sensors with protective cover

3. LCD display

4. /SET

5. NEXT

6. MODE/

7. RS-232 interface

8. Battery compartment (on rear)

DISPLAY

Symbol Function

WBGT Wet Bulb Globe Temperature

TG Black Globe Temperature

TA Air Temperature

RH% Relative Humidity

OUT Indoor (no sun)

IN Outdoor (in full sun)

C/F Celsius/Fahrenheit

Low Battery indicator

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Meter Operation

1. Press the /SET button to power the instrument on/off.

2. Slide down the protective sensor cover before taking measurements.

3. Press the MODE/button to select the desired display mode: Wet Bulb Globe Temperature

Index (WBGT), Air Temperature (TA), Black Globe Temperature (TG), or Relative Humidity

(RH). An icon will appear in the display indicating the current selection.

4. To select the preferred temperature unit (°F or °C), simultaneously press and release the

MODE/and NEXT buttons. The F or C icon will appear in the display.

5. The meter measures WBGT index with (IN) or without (OUT) direct sun exposure. Hold down

the MODE/ for more than 1 second to alternate between settings. The IN or OUT icon will

appear in the display.

Alarm Setting

The HT30 has a user settable heat stress alarm. The HT30 will emit an audible beep when the heat

stress WBGT reaches the level previously set by the user. The alarm will continue beep until the

measured WBGT temperature falls below the alarm level set by the user, or the meter is turned off.

The setting range is from 68.0 to 99.0°F (20.0 to 37.2°C).

1. To enter the alarm setup mode, hold down the /SET button for more than 2 seconds when

turning the meter on.

2. The current alarm setting will be displayed with the most significant digit blinking.

3. Use the MODE/button to increment the digit.

4. To set the next digit, momentarily press the NEXT button.

5. After all of the digits are set, press and hold the NEXT button for 2 seconds to return to the

measuring mode.

NOTE: The OUT icon will appear in the display If the new setting is out of the setting range of the

alarm.

Especificaciones del producto

Marca:	Extech
Categoría:	termómetro
Modelo:	HT30
Tipo de operación:	Touch
Color del producto:	Zwart
Pantalla incorporada:	Nee
Ancho:	600 mm
Profundidad:	250 mm
Nivel de ruido:	64 dB
Clase-de-eficiencia-energética:	A
Consumo-anual-de-energía:	46 kWu
Amable:	Muurmontage
Potencia del motor:	233 W
Material de la carcasa:	Glas
Capacidad máxima de extracción:	680 m³/uur
Método de extracción:	Luchtafvoer
Clase de eficiencia fluidodinámica:	A
Clase de eficiencia lumínica:	A
Clase de eficiencia del filtro de grasa:	F
Nivel de ruido (baja velocidad):	51 dB
Número de lámparas:	1 gloeilamp(en)
Tipo filtro veterinario:	Aluminium/Carbon
Lámpara de encendido:	3 W
Número de velocidades:	4
Escala de eficiencia energética:	A+++ tot D