heat stress - lsi lastem

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Environmental Monitoring Solutions HEAT STRESS

Monitoring equipment

Heat Shield—Real-time portable

heat stress monitoring system

Real-time permanent indoor

heat stress monitoring radio system

Real-time outdoor


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Environmental Monitoring Solutions

HEAT STRESS

Heat stress negatively affects productivity and can lead to accidents, illness and even death. Prolonged exposure to high

temperatures provokes fluid loss, muscular cramp, shock or heat stroke; it increases human error, reduces mental and

physical activities. Heat stress monitoring in workplaces (thanks to WBGT and PHS indexes), to evaluate operative thermal

conditions and define working exposure/rest times, is of primary importance to organize the work. Evaluation of heat

stress in workers exposed to hot/dry conditions of industry is imperative for management of heat stress.

A variety of indices were introduced for the evaluation of heat stress in hot environments. WBGT index (Wet Bulb Globe

Temperature) is one of the best known and most widely used. It contains important environmental factors such as dry bulb

temperature, wet bulb temperature and globe temperature. In the calculation of this index, factors such as clothing, level

of metabolism and acclimatization are used.

In order to reliably assess the time limiting safe exposure in occupational settings to manage the heat stress, the Predicted

Heat Strain (PHS) (ISO7933) index is one of the alternatives. PHS uses both personal factors, such as height and weight, and

job factors of environment, metabolic rate and clothing.

MW9021-ENG-00-29/05/2020



Heat shield is a portable system for real-time WBGT, Operative Temperature,

Heat index calculation. It can be held in hand or fixed on a tripod for short-

term monitoring campaign. It can be used indoor or outdoor and can be con-

nected to satellites for measurements in different points. Supplied with a soft-

ware for data downloading, assessment and reporting. Predicted Heat Strain

(PHS) index calculation adding TEA software suite.



The solution for real-time assessment of severe environments is permanent

monitoring of the WBGT. The only system that allows you to measure all pa-

rameters simultaneously at all desired positions The system consists of a

number of Satellite radio modules, which transmits data via radio to a Master

data logger which sends information and alarms in real time to a control room

and via web browser.

Real-time outdoor


For monitoring and real-time warning the health and safety of workers in se-

vere outdoor high thermal stress conditions, a weather station suitable for

WBGT index permanent monitoring . The system consists of sensor, data log-

ger and mounting accessories. Data Logger can calculate WBGT and send the

real-time data locally to a control room or remotely via modem and generate

alarms.

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HEAT STRESS



Few minutes for system installation and set-up

Real-time calculation of the following indexes: WBGT, Op-erative Temperature, Heat index

HS Manager program included for data downloading, data assessment and data reporting

Predicted Heat Strain (PHS) index calculation with TEA software suite

Verification probe for assessment of the system calibra-tion

Heat Shield meter calculates, stores and displays on-line WBGT indoor & outdoor indices plus Heat Index and Humidex

indices. Furthermore, if ESV125 anemometer is connected, Heat Shield can calculate directly the PMV-PPD comfort index

(ISO7730). Heat shield can be used for indoor applications (hot workingplaces, factories, industrial plants, etc.) or outdoor

(construction sites, outdoor workplaces, etc.), it can be held in hand or fixed on a tripod for short-term monitoring periods

(such as one day).

Thanks to its built-in radio technology, Heat Shield can support up to two

satellite units to assess analysis at different levels or in different locations.

Satellites can calculate WBGT in different places at the same time, for exam-

ple different workplaces or different rooms.

It is possible to download the stored data using HS Manager PC program

included with Heat Shield. From HS Manager it is also possible to export the

data to GIDAS TEA program, used for further thermal environments analysis

as Predicted Heat Strain (PHS), Insulation Required (IREQ), Duration Limit of

the exposition (Dlim). GIDAS-TEA program will also allow in-depth analysis of

WBGT, PMV and PPD indexes (read Gidas-TEA catalogue MW9006-ENG-06).

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Portable Heat shield Kit

Drw. Ref. PN Description Kit1 Ref. Notes

Heat shield (see catalogue MW9002-ENG-00)

1 ELR610M Heat Shield/Base module/Charger+USB+SW+ Casea/5cm globe 1

ELR615M Heat Shield/Base module/Charger+USB+SW+ Case/15cm globe Altern. To ELR610M A

2 ELR610S Heat Shield/n.2 Satellites/Case/5cm globe Optional

ELR615S Heat Shield/n.2 Satellites/Case/15cm globe Altern. To ELR610S A

Software (see catalogues MW9006-ENG-04, 06) Optional

BSZ311 SW Gidas Viewer/PC 1

BSZ317 SW Gidas TEA/Hot/PC 1 B

Accessories (see catalogue MW9005-ENG-07) Optional C

3 BVA304 Tripod 1

BWA314 Mounting for HeatShield on tripod 1

BWA048 Long bag for tripod 1

Verification probe (see catalogue MW9002-ENG-00) Optional

4 EST100 Sensor/Reference Temp./Pt100/HeatShield 1 D

NOTES

A In function of local regulations

B To add other indices (PHS)

C Needed for short term monitoring on tripod

D To verify sensor's accuracy

The kit is composed of the Heat Shield (1) that displays

on-line WBGT indoor & outdoor index (ISO7243), Heat

Index (SR 90-23) and Humidex (Canada’s Atmospheric

Environment Service equation, 1979). More indexes, re-

quiring complex calculations, are determined with TEA

(Thermal Environments Application) software suite, such

as the Predicted Heat Strain (PHS) and the Duration Limit

of the exposition (Dlim). Thanks to its built-in radio tech-

nology, Heat Shield can support up to two satellite units

(2) to calculate WBGT in different locations.

The system can be fixed on a tripod (3) or held in hand

for fast scanning of thermal situation.

Using the high accuracy temperature probe (4) con-

nected to Heat Shield, it is possible to assess the measu-

rement differences between this reference sensor and

the three temperature sensors (Ta, Tg, Tnw) values.

1

2

3

4

Radiant

Temperature

Air temperature &

Relatve Humidity

Wet bulb

temperature



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HEAT STRESS


heat stress monitoring radio system According to ISO7243 and ISO7726 standard

Multi-position indoor monitoring modules (Temperature, Globe temperature, Wet Temperature) and optional outdoor sensors (Air temperature, RH%, Solar Radiation, Wind speed, etc.)

WBGT index real time calculation according to ISO7243

Network of monitoring modules connected by radio to Master data logger

Permanent and real-time system

Made to stand in severe environments

Real-time dash board in control room via MQTT broker server

SMS and e-mail alarms

Electrical outputs for local alarm devices

For the real-time assessment of the health and safety of workers in conditions of high thermal stress, portable systems are

not normally equipped with all the features required for long-term permanent monitoring. LSI LASTEM has developed a

system suitable for large industrial plants where it is necessary to permanently monitor the conditions of instantaneous

thermal stress in a large number of positions. The system consists of a number of Satellite radio modules, for the measure-

ment of air temperature, relative humidity, radiant temperature, wet temperature. They calculate a number of heat stress

indices, including the WBGT according to the ISO7243 standard. Each module transmits data via radio to a Master data log-

ger which sends information in real time to a control room, produces alarms via sms, e-mail, connects to local alarm sys-

tems, as well as sends the data to Scada systems via Modbus RTU / TCP protocol.

DMA121 Wet Temperature Natural

Ventilation sensor (3)

Type Pt100 1/2 DIN-A

Range 0÷80°C

Accuracy 0,15°C (@0°C)

Water capacity 500 cc

Water duration About 1 month

Globe Temperature sensor (4)


Range -20÷120°C


Temperature and RH sensor (2)

Type (Temperature) C-MOS (Silicon)

Type (RH%) Capacitive

Range (Temperature) -20÷80°C

Range (RH%) 0÷100%

Accuracy (Temperature) 0,1°C (@0°C)

Accuracy (RH%) ±1,8% (@5÷80%)

WBGT Satellite radio module

Radio system (1)

WBGT (indoor) index

WBGT (outdoor) index According to ISO7243

Heat index According to 1990 National

Weather Service (NWS) Tech-

nical Attachment (SR 90-23)

Humidex According to J.M. Masterton

and F.A. Richardson of Cana-

da’s Atmospheric Environ-

ment Service equation

(1979)

Radio ZigBee

Frequency ISM 2,4 GHz direct sequence

channels

1

2

3

4

6 6



Switched power supply outputs

N.3 independent electrical outputs that can be activa-

ted with configurable logics. Outputs are usefull to trig-

ger external devices such as acustic/visual alarms.

Modbus RTU and TCP outputs

It is possible to connect the Master data logger to a

SCADA by Modbus (RTU or TCP).

Internal web-server

Master data logger has an internal web-server. Using any Internet browser, the following information are available:

• Diagnostic information (system date/hr, IP address, battery status, events/alarms log, output status, etc

• Instant values

• Data downloading from memory (ASCII, CSV, Excel, ZIP)

Warnings by SMS, E-mail and MQTT

Notifications/alarms delivery:

• E-mail: with editable text, scheduling and dis-

tribution lists. E-mail attachment contains the

file with the data that generated the event.

• SMS: with editable text, scheduling and distri-

bution lists up to 5 users. Active only when the

device is working in low-power mode and con-

nected through 3-4 G modem.

• MQTT: data delivery to a MQTT Broker server:

instant values, elaborations and alarm notifia-

tions. LSI LASTEM provides software applica-

tion (X-Panel) to get real-time dash bord of the

online values.

Additional sensors

The system is open to receive different kind of

sensors wired connected to the Master data

logger. LSI LASTEM provide a wide range of sen-

sors for indoor (thermal environments) and out-

door (meteorological).

Each measurement arriving by radio from the WBGT satellite modules is received by the Master data logger unit. Seve-

ral options are available for the use of the received data

ASCII file data format

The main data stream from the Master data logger to the

server (one or more servers) is made using ASCII (*txt) file

by FTP protocol. LSI LASTEM provides software applications

(GIDAS-Viewer) to receive data saved in the FTP server on a

remote PC and to produce charts, tables and report of the

measurements.

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Kit 1 - One network solution

Option for short distances between radio WBGT radio satellite modules and Master data logger.

1

Drw. Ref. PN Description Ref. Notes

WBGT satellite module (see catalogue MW9002-ENG) A

1 ELR610S-1 Heat Shield/Satellite/Case/5cm globe

2 DMA121 Sensor/TNW Temp/IP65/Cable L=5 m

3 BVA305 Stand for Satellite on wall

BSC125 Power supply unit for Heat Shield

Radio repeater (see catalogue MW9005-ENG-07) B

4 EZB322 Repeater ZB radio signals/IP54/AC univ

Master Data Logger (see catalogue MW9005-ENG-01/07) C

5 ELR510.1 R-Log Radio MSR/ZB/N.5 inputs/8MB/Display/Batt/MiniDIN

6 DLALA0100.1 Alpha-Log/400MB/n.2 RS232/n.1 RS485/n.2 USB/n.1 Ethernet

7 MDMMA1110 ALIEM/Inputs extension/N.8 Analog.+4 Digitals/RS232-Modbus

8 ELF340 Box IP66/50x40x16cm/230V->13,8V/50W/batt.2Ah

DYA072 Arm/ELFxxx/to wall

9 Meteorological sensors (wired connection to ALIEM module D

Wind speed sensor (see catalogue MW9000-ENG-09)

DNA202.1 Sensor/Cup-anem.-Compact/WS/Hz/7pin

DWA526 Cable/L=50m/sensors

Temperature and RH sensor (see catalogue MW9000-ENG-05)

DMA875 Sensor/T+RH% meteo/2x4÷20mA/10÷30V

DYA049 Collar/for sensor arm to D=45÷65mm pole


Second class ISO9060 pyranometer (see catalogue MW9000-ENG-11)

DPA863 Sensor/Pyranometer/Second Class/4-20mA

DYA034 Arm/DPA863 to DYA049



2

3

5

4 6

8

9 7



NOTES

A Number of radio Satellite modules depends on the user’s requirements

B Number of radio Repeater depends on the layout of the building C Data management from the Master data logger depends on the user’s requirements

D Meteorological sensors are optional. More sensor types are available. Wide range of cables length

8 8

Kit 2 - Two sub-networks solution

1

2

3

4

Option for long distances (or multiple environments) between radio Satellite modules and data acquisition sys-

tem (Master). In the above layout two sub-networks (one for each building floor) are jointed together and con-

nected by RS485 bus to the Master data logger placed in a separate Control room. Number of sub-network

depends on the building layout.


WBGT satellite module (see catalogue MW9002-ENG) A

1 ELR610S-1 Heat Shield/Satellite/Case/5cm globe

2 DMA121 Sensor/TNW Temp/IP65/Cable L=5 m

3 BVA305 Stand for Satellite on wall

BSC125 Power supply unit for Heat Shield

Radio repeater (see catalogue MW9005-ENG-07) B

4 EZB322 Repeater ZB radio signals/IP54/AC univ

Radio receiver (see catalogue MW9005-ENG-01/07) C

5 ELR510.1 R-Log Radio MSR/ZB/N.5 inputs/8MB/Display/Batt/MiniDIN

6 MDMMA1110 ALIEM/Inputs extension/N.8 Analog.+4 Digitals/RS232-Modbus

7 ELF340 Box IP66/50x40x16cm/230V->13,8V/50W/batt.2Ah

DEA504 RS232->485 converter/DIN bar


8 6

5

7

9

10



9 9



8 Meteorological sensors (wired connection to ALIEM module C

Wind speed sensor (see catalogue MW9000-ENG-09)



Outdoor Temperature and RH sensor (see catalogue MW9000-ENG-05)

DMA875 Sensor/T+RH% meteo/2x4÷20mA/10÷30V


DWA526 Cable/L50m/sensors

Second class ISO9060 pyranometer (see catalogue MW9000-ENG-11)

DPA863 Sensor/Pyranometer/Second Class/µV/Cable L=5 m

DWA426 Cable/L50m/sensors

DYA034 Arm/DPA053-008, ESR003, DQA601, DMA131/ to DYA049


Master Data Logger (see catalogue MW9005-ENG-01/07) D

9 DLALA0100.1 Alpha-Log/400MB/n.2 RS232/n.1 RS485/n.2 USB/n.1 Ethernet

10 ELF340.8

Box IP66/50x40x16cm/230V->13.8V/50W/Compatible to RS485 connec-tions


TXMRA0031 RS485 repeater/N.1 input-N.3 outputs (star)/10÷30 Vdc/DIN bar

NOTES

A Number of radio Satellite modules depends on the user’s requirements

B Number of radio Repeater depends on the layout of the building

C Meteorological sensors are optional. More sensor types are available. Wide range of cables length

D Data management from the Master data logger depends on the user’s requirements

10 10

HEAT STRESS

Real-time outdoor


According to ISO7243 and ISO7726 standard

Automatic Weather station including sensors for WBGT calcula-tion: wet temperature, globe temperature, air temperature (and RH%). Other meteorological sensors are available

Permanent and real-time system

Made to stand in severe environments

Real-time dash board in control room via MQTT broker server

SMS and e-mail alarms

Electrical outputs for local alarm devices

For monitoring and real-time warning the health and safety of work-

ers in severe outdoor high thermal stress conditions, LSI LASTEM

has developed a weather station suitable for WBGT index perma-

nent monitoring . The system consists of sensor, data logger and

mounting accessories, for the measurement of air temperature,

relative humidity, radiant temperature, wet temperature (other me-

teorological sensors are available). Data Logger can calculate WBGT

according to the ISO7243 standard and send the real-time data lo-

cally to a control room or remotely via modem. Data logger produc-

es alarms via sms, e-mail, connects to local alarm systems, as well

as sends the data to Scada systems via Modbus RTU / TCP protocol.

DMA121 Wet Temperature Natural

Ventilation sensor (3)


Range 0÷80°C


Water capacity 500 cc

Water duration About 1 month

DMA131 Globe Temperature sensor (2)


Range -20÷120°C


DMA033 Temperature sensor (1)

Type (Temperature) C-MOS (Silicon)

Type (RH%) Capacitive

Range (Temperature) -20÷80°C

Range (RH%) 0÷100%

Accuracy (Temperature) 0,1°C (@0°C)

Accuracy (RH%) ±1,8% (@5÷80%)

WBGT Weather Station

Heat Stress calculation

WBGT (indoor) index

WBGT (outdoor) index According to ISO7243

Heat index According to 1990 National

Weather Service (NWS) Tech-

nical Attachment (SR 90-23)

Humidex According to J.M. Masterton

and F.A. Richardson of Cana-

da’s Atmospheric Environ-

ment Service equation

(1979)

1

2

3

11 11

Real-time outdoor


Switched power supply outputs

N.3 independent electrical outputs that can be activa-

ted with configurable logics. Outputs are usefull to trig-

ger external devices such as acustic/visual alarms.

Modbus RTU and TCP outputs

It is possible to connect the Master data logger to

a SCADA by Modbus (RTU or TCP).

Internal web-server

Master data logger has an internal web-server. Using any Internet browser, the following information are available:

• Diagnostic information (system date/hr, IP address, battery status, events/alarms log, output status, etc.

• Instant values

• Data downloading from memory (ASCII, CSV, Excel, ZIP)

Warnings by SMS, E-mail and MQTT

Notifications/alarms delivery:

• E-mail: with editable text, scheduling and dis-

tribution lists. E-mail attachment contains the

file with the data that generated the event.

• SMS: with editable text, scheduling and distri-

bution lists up to 5 users. Active only when the

device is working in low-power mode and con-

nected through 3-4 G modem.

• MQTT: data delivery to a MQTT Broker server:

instant values, elaborations and alarm notifia-

tions. LSI LASTEM provides software applica-

tion (X-Panel) to get real-time dash bord of the

online values.

Additional sensors

The system is open to receive different kind of

sensors wired connected to the Master data

logger. LSI LASTEM provide a wide range of sen-

sors for indoor (thermal environments) and out-

door (meteorological).

Several options are available for the use of the received data

ASCII file data format

The main data stream from the Master data logger to the

server (one or more servers) is made using ASCII (*txt) file

by FTP protocol. LSI LASTEM provides software applications

(GIDAS-Viewer) to receive data saved in the FTP server on a

remote PC and to produce charts, tables and report of the

measurements.

12 12

Real-time outdoor



Alpha-Log data Logger (see catalogue MW9005-ENG-01) A, B, C

DLALA0100.1 Alpha-Log/400MB/n.2 RS232/n.1 RS485/n.2 USB/n.1 Ethernet

MDMMA1110 Alpha-Log/Inputs extension/N.8 Analog.+4 Digitals/RS232-Modbus

IP66 box (see catalogue MW9005-ENG-07)

1 ELF340 IP65 box 500x400 mm. Includes 230VAC/24-13,8 V (50W) power pack, 2Ah battery

DYA074 Pole mounting diam. 50 mm for IP65 XLF3xx boxes

2 Solar panel (see catalogue MW9005-ENG-07) D

DYA101 Solar pannel/50W/cable L=5m

DYA064 Arm/Solar panel/to D=45÷65mm pole

MG0560 Battery 12V/40Ah

3 Temperature and RH% sensor (see catalogue MW9000-ENG-05)

DMA672.1 Temperature and RH% sensor, cable L. 3 m free wires

DYA230 Natural ventilation radiant shield

DYA049 Collar for fixing arms to meteo pole diam. 45-65 mm

4 Wet temperature sensor (see catalogue MW9000-ENG-03)

DMA121 Natural vendition wet temperature sensor for outdoor use. Cable L. 5 m free wires

DYA032.1 Horizontal arm for fixing DMA121 to DYA049 collar


5 Radiant temperature sensor (see catalogue MW9000-ENG-02)

DMA131 Black globe radiant temperature sensor for outdoor use. Cable L. 5 m free wires

DYA032 Horizontal arm for fixing DMA131 to DYA049 collar


Heat Index Automatic Weather Station Kit

Automatic Weather Station fixed to H.2 m pole. Including data Logger and

sensors required for the WBGT index calculation.

1

4

3 2

5

6 7

8

NOTES A Data Logger has built-in Absolute Pressure sensor

B Data communication modality from data logger depends on

the user’s requirements (3-4G modem, 4G Router, Ethernet) C

Data management depends by the user’s requirements D Solar panel is optional

E Wind speed and Irradiance sensors are optional.

More meteorological sensors types are available

13 13

LSI LASTEM Srl

Via Ex SP. 161 Dosso, 9

20090 Settala (MI)

Italy

Tel. +39 02 954141

Fax +39 02 95770594

Email [email protected]

www.lsi-lastem.com

Real-time outdoor


6 Wind speed sensor (see catalogue MW9000-ENG-09) E



7 Solar Radiation sensor (Second Class pyranometer) (see catalogue MW9000-ENG-11)

E

DPA053 Sensor/Pyranometer/Second Class/µV/Cable L=5 m

DYA032 Arm/DPA053-008, ESR003, DQA601, DMA131/ to DYA049


8 Pole H.2 m (see catalogue MW9007-ENG-01)

DYA006.1 Mast H=2m. Ø 50 mm

DYA020 Base for meteo poles Ø 50 mm fitted onto cement plinth

DYA020.1 Set of n.3 anchoring bolt for DYA020 base on concrete plinth

Contact LSI LASTEM for more information

about system configurations and options

according to the requirements

mailto:info@lsi/lastem.com




heat stress - lsi lastem

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