Casella CEL Microtherm WBGT heat stress monitor - Manual (Page 9)

It is a compact, site monitoring instrument intended primarily for tripod
mounting but may also be handheld; it has the following main features.
¤ LCD graphics display
¤ Real-time display
¤ Full datalogging facilities as standard
¤ Low water level warning
¤ Built-in alarm for WBGT levels
¤ RH% and dewpoint calculation
¤ Automatic calculation of work / rest regimes via PC Software
¤ Optional tripod mounting and extension cable
¤ Meets the requirements of ISO 7234/ DIN
¤ Ergonomic design
The sensor array can be mounted directly on the instrument case, or
detached and mounted on a tripod with an extension cable to provide remote
sensing. Accuracy is achieved by using Platinum Resistance Temperature
Detectors manufactured to high standards of accuracy, stability, and
sensitivity. These sensors conform to the requirements of IEC 751 class A
and EN 60751 class A. On the sensor array, a radiation shield is provided for
the dry temperature sensor.
The instrument will operate from rechargeable batteries, primary cells, or
mains power supply while the high definition liquid crystal display is capable
of showing both text and graphical information. It also shows instrument
configuration details, temperature levels, logger information and battery
condition.
The instrument uses a membrane keypad for all control functions, while a
serial (RS 232) socket is provided for data transfer to a PC for data
manipulation and presentation using Casella WinHSM application software.
Calibration modules can be provided to check the instrument's zero and span
setting.
1.3 The Sensor Array
Figure 2: The Sensor Array
Connector
Tripod Bush
Air Temperature
Wet Temperature
Globe
Temperature
Fill Level
00062
Page 9 of 44
Description MICROTHERM Heat Stress WBGT &
WinHSM Application Software - User Manual