No.8311-50
WBGT Heat Stress Monitor
SK-161GT
JAN code : 4974425831241
Calibration : Available
JCSS Accredited Calibration : Available
SK-161GT is a monitor of indoor temperature, humidity, and WBGT, and displays four-level alert available for both desktop and wall mount use.
Buzzer and LED light activates when WBGT exceeds the set value. Equipped with a radio clock.
It's the best tool to prevent heat strokes indoors.
■ Product Overview (Japanese only)
■ Introduction to All Heat Stress Monitors from SK Sato (Japanese only)
Feature
■ Note: Indoor use only
■ Displays an alert level of WBGT in 4 steps
■ Wide LCD for high visibility
■ Radio clock requires no time setting by hand
Note: SK-161GT works as a radio clock only in Japan (GMT+9).
■ Two ways to install
Can be placed on a desktop with a frame stand, or hung on a wall with a rear hook hole.
Description
■ What's WBGT?
WBGT, stands for wet bulb globe temperature, is an index introduced from three elements related to biological heat balance: temperature, humidity, and heat radiation. It is originally calculated from dry bulb temperature, wet bulb temperature, and black globe temperature.
This device simply calculates WBGT from temperature and humidity based on the following guideline, and shows either one of the four levels of caution.
Heat stress prevention guidelines for daily life: Abstracted from "Heat Stress Prevention Guidelines for Daily Life," Japanese Society of Biometeorology, 2013
| WBGT | Type of risks in relation to physical activity | Remarks |
| Danger (31°C or higher) | Risk during any physical activity | Risk is high for the elderly, even when they rest. Avoid going out and stay in a cool room. |
| Severe warning (28 to 31°C) | Risk during any physical activity | Avoid direct sunlight outdoors and watch for any rise in room temperature indoors. |
| Warning (25 to 28°C) | Risk during moderate to vigorous physical activity | Take adequate rest regularly when exercising or doing vigorous work. |
| Caution (25°C or lower) | Risk during very vigorous physical activity | Low in risk basically, but high in risk when doing vigorous exercise or heavy labor. |
Specifications
| Cat. No. | 8311-50 | |
| Product name | WBGT Heat Stress Monitor | |
| Model name | SK-161GT | |
| Measuring range | WBGT | 0 to 50°C after calculation |
| Temperature | 0.0 to 50.0°C | |
| Humidity | 20.0 to 95.0%rh | |
| Accuracy | Temperature | ±1.0°C (10 to 40°C) ±2.0°C (other) |
| Humidity | ±5.0%rh (20 to 30°C, 40 to 80%rh) ±8.0%rh (other) | |
| Clock | ±1 sec./month when self-setting works in Japan (GMT+9) ±45 sec./month in other areas | |
| Resolution | WBGT | 1°C |
| Temperature | 0.1°C | |
| Humidity | 0.1%rh | |
| Sampling time | 30 seconds | |
| Detector | Temperature | Thermistor |
| Humidity | Polymeric resistive humidity sensor | |
| Alarm range | WBGT 0 to 50°C in steps of 1°C | |
| Volume | Off, small (65 dB), large (80 dB) | |
| Clock specs | Radio clock auto-receives 40 or 60 kHz signals in Japan (GMT+9)* Switchable 12- or 24-hour format | |
| Operation ambient | 0 to 50°C, less than 95%rh without condensing | |
| Power | AA battery x 3 (4.5 VDC) | |
| Battery life | Approx. 22 months** If AA alkaline batteries are used, alarm beeps once a day, and no manual radio signal search is performed | |
| Materials | ABS resin, acrylic glass | |
| Dimensions | 230 (W) x 164 (H) ×27 (D) mm | |
| Weight | 530 g including batteries | |
| Standard accessories | AA battery x3 | |
* The clock can perform self-setting only in Japan (GMT+9).
** Attached batteries are for test use and may last shorter than the indicated life.
*** JCSS-accredited calibration can only be applied to temperature and humidity.
