GHM DeltaOHM HD32.3TC Operating Manual
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GHM DeltaOHM HD32.3TC Operating Manual

Thermal microclimate
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Thermal microclimate
HD32.3TC
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Summary of Contents for GHM DeltaOHM HD32.3TC

  • Page 1 English Operating manual Thermal microclimate HD32.3TC Companies / Brands of GHM www.deltaohm.com Keep for future reference.

  • Page 2: Table Of Contents

    INDEX INTRODUCTION ....................3 DESCRIPTION ....................... 5 THERMAL MICROCLIMATE..................7 WBGT ....................7 INDEX PPD ..... 8 REDICTED MEAN VOTE AND PREDICTED PERCENTAGE OF DISSATISFIED ................17 EAN RADIANT TEMPERATURE DR ............18 URBULENCE INTENSITY AND DRAFT RATE OPERATION ......................19 THE MENU ......................

  • Page 3: Introduction

    1 INTRODUCTION HD32.3TC is a portable instrument indicated for the microclimate and Indoor Air Quality (IAQ) analysis. Depending on the probes connected, the instrument measures: • T dry bulb temperature • T natural ventilation wet bulb temperature • T globe thermometer temperature •...
  • Page 4 IAQ applications: • Measurement of comfort conditions and indoor air quality, for example in schools, offices, factories, etc. • Sick building syndrome analysis. • Verification of the efficiency of Heating, Ventilation and Air Conditioning (HVAC) systems. • Building Automation. Reference standards: •...

  • Page 5: Description

    2 DESCRIPTION Input for SICRAM probes. OTG mini-USB input for power supply, battery charging, PC connection. Three-color (RGB) LED: indicates logging and battery status. It blinks green if the logging is not active; It blinks blue if the logging is active; it blinks red if the battery is almost discharged.
  • Page 6 Display 12. Date and time. 13. Type of measurement. 14. Physical quantities measured by the connected probes. 15. Calculated indices. 16. Key for viewing the graphs. 17. Key for entering the menu. 18. Key to view the next page (the scrolling is cyclic). 19.

  • Page 7: Thermal Microclimate

    3 THERMAL MICROCLIMATE Thermal Microclimate refers to the environmental parameters that influence the thermal ex- changes between an individual and the environment in confined places, and that determine the so-called “thermal well-being”. The micro-environmental climatic factors, together with the type of work done, condition the worker in a series of biologic responses linked to well-being situations (Comfort) or thermal un- easiness (Discomfort).

  • Page 8: Predicted Mean Vote Pmv And Predicted Percentage Of Dissatisfied Ppd

    • directly reduce the thermal stress in the workplace under consideration; • proceed with a detailed analysis of the thermal stress. Table 3.1: limit values of the thermal stress WBGT indicated in the ISO 7243 standard METABOLIC RATE, M WBGT LIMIT VALUE TOTAL (FOR AN METABOLIC...
  • Page 9 • Energetic waste = 1 ÷ 4 met • Clothing thermal impedance = 0 ÷ 2 clo • Wet bulb temperature = 10 ÷ 30 °C • Mean radiant temperature = 10 ÷ 40 °C • Air speed = 0 ÷ 1 m/s •...
  • Page 10 Table 3.3: thermal impedance values of some typical clothes combinations (ISO 9920) Clothing Work clothing Pants, overalls, socks, shoes 0.70 0.110 Pants, shirt, pants, socks, shoes 0.75 0.115 Pants, shirt, overalls, socks, shoes 0.80 0.125 Pants, shirt, pants, jacket, socks, shoes 0.85 0.135 Pants, shirt, pants, aprons, socks, shoes...
  • Page 11 Clothing Light, with long sleeves 0.20 0.031 Normal, with long sleeves 0.25 0.039 In flannel, with long sleeves 0.30 0.047 Light blouse, with long sleeves 0.15 0.023 Trousers Short 0.06 0.009 Light 0.20 0.031 Normal 0.25 0.039 In flannel 0.28 0.043 Clothes- skirts Light skirt (summer)
  • Page 12 Table 3.4: metabolic rate – classification according to the job Metabolism (W/m Craftsman Bricklayer 110 ÷ 160 Carpenter 110 ÷ 175 Glazier 90 ÷ 125 Painter 100 ÷ 130 Baker 110 ÷ 140 Butcher 105 ÷ 140 Watchmaker 55 ÷ 70 Mining Trasporter worker 70 ÷...
  • Page 13 Table 3.5: Metabolic rate – classification by category Class M variation range Examples Rest At rest (55 ÷ 70) (100 ÷ 125) Comfortable seated: light manual work (writing, typing, drawing, cutting, accounting), working with hands and arms (small tools, inspection, assembly or sorting of material), with arms and legs (driving a vehicle under normal conditions, oper- ation of a pedal or a switch with the feet).
  • Page 14 Table 3.6: metabolic rate – classification by specific activity Activity Flat walk along the path At 2 km/h At 3 km/h At 4 km/h At 5 km/h Walking uphill at 3 km/h Slope of 5° Sope of 10° Slope of 15° Walking downhill at 5 km/h Slope of 5°...
  • Page 15 Activity Jobs – Steel industry Blastfurnace Preparing the casting channel Tapping Forming (by hand) Forming medium size pieces Hammering with jackhammer Forming small pieces Forming (by machine) Pouring castings Forming, ladle with one operator Forming, ladle with two operators Forming from a ladle suspended to a crane Finishing Working with jackhammer Grinding.
  • Page 16 Activity Skiing - in plan with good snow 7 km/h 9 km/h 12 km/h Ice Skating 12 km/h 15 km/h 18 km/h Jobs – Home jobs Various jobs Cleaning 100 ÷ 200 Cooking 100 ÷ 200 Cleaning dishes, standing Hand washing and ironing 120 ÷...

  • Page 17: Mean Radiant Temperature

    3.3 M EAN RADIANT TEMPERATURE The medium radiant temperature T is defined as the uniform temperature of a fictitious black cavity in which an individual would exchange the same amount of radiant thermal energy that it exchanges in the real non-uniform environment. To evaluate the mean radiant temperature, we must detect: the globe thermometer tempera- ture, the air temperature and the air speed measured close to the globe thermometer.

  • Page 18: Turbulence Intensity Tu And Draft Rate Dr

    3.4 T URBULENCE INTENSITY AND DRAFT RATE The local turbulence intensity, in percentage, is defined as the ratio between the local air speed standard deviation and the local average air speed (ISO 7726): × where: = average local wind speed SD = local wind speed standard deviation ...

  • Page 19: Operation

    4 OPERATION Before switching the instrument on, connect the probes to the inputs. • For the measurement of the WBGT index, connect the following SICRAM probes: o TP3207.2 or TP3207 dry bulb temperature probe. o TP3276.2 or TP3275 globe thermometer probe. o HP3201.2 or HP3201 or TP3204S natural ventilation wet bulb temperature probe.
  • Page 20 Thermal microclimate Thermal microclimate Indoor Air Quality PMV – PPD indices WBGT index Indoor Air Quality Thermal microclimate Particulate Matter DR – TU indices Measured quantities: Calculated indices: = Carbon dioxide DR = Draft Rate T = Environmental temperature (dry bulb) PMV = Predicted Mean Vote Tg = Globe thermometer temperature PPD = Predicted Percentage of Dissatisfied...
  • Page 21 DR and TU indices calculation To start the calculation of the TU and DR indices press the START key in the measurement screen. The calculation is updated every second and stops automatically after 3 minutes (at the top right, above the measurements, there is a timer). The final measurement is an average value over the 3 minutes.

  • Page 22: The Menu

    5 THE MENU To enter the menu, press MENU key (central key) on the display: INFO: instrument and connected probes general information. MEASURE: setting of the type of measurements displayed. LOGGING: setting of the logging interval, viewing of recorded files and definition of projects. SETUP: setting of the Wi-Fi and FTP connections, date and time, language and auto-off of the display backlight.

  • Page 23: Info Menu

    • CAP: upper case ⇔ lower case. • CLR: clears the string. • DEL: deletes the last character. • 123: alphabetic characters ⇔ numbers/symbols. • ENTER: confirms the entered string. 5.1 INFO MENU The INFO Menu shows the instrument and connected probes general information. In order to scroll through the information pages, swipe horizontally on the display.

  • Page 24: Measure Menu

    5.2 MEASURE MENU The MEASURE menu allows choosing the measurement screens to be displayed. To save the setting, press the "check" key, a message will appear asking to confirm the save. 5.3 LOGGING MENU The LOGGING menu allows setting the logging interval, viewing the data files list and defining and selecting projects (folders).
  • Page 25 The interval can be set from 1 second to 1 hour. If the logging duration is "00:00:00", the logging stops when the REC key is pressed. If the logging duration is different from "00:00:00", the storage ends when the set time expires (from the start of logging with the REC key).

  • Page 26: Setup Menu

    To manage the projects, press PROJECT in the LOGGING menu. • NEW…: creates a new project. • RENAME: renames the selected project. • DELETE: deletes the selected project. To select a project, press the SELECT key next to the project name. 5.4 SETUP MENU The SETUP menu allows setting the Wi-Fi and FTP connections (“Wi-Fi”...
  • Page 27 By selecting the SSID or PASS fields, the virtual keyboard for entering the network identifier or the access password appears. Selecting FTP SETUP you can activate (ON) or deactivate (OFF) the data files sending via FTP. Select "FTP test" to check the correct sending of data via FTP. Select "FTP Config" to configure the sending of data via FTP: FTP address, port number, user name, password and data destina- tion folder.
  • Page 28 In order to set the instrument date and time, press “Date Time” in the SETUP menu. Set YEAR, MONTH, DAY, HOUR, MINUTE and SECOND by using the +/- keys. Press the "check" key to confirm. In order to change the instrument language, press “Language” in the SETUP menu, then select the language and press the "check"...
  • Page 29 In order to change setting of the auto-off of the display backlight, press “Backlight” in the SETUP menu. Select “Always ON” to disable the auto-off. To set the auto-off after 30 s, 1 min, 5 min or 15 min of inactivity, select the corresponding "Backlight OFF ..."...

  • Page 30: Pmv Setup Menu

    5.5 PMV SETUP MENU The PMV SETUP menu allows setting the parameters for the PMV index calculation. Set the clothing insulation (in CLO) and the metabolic rate (in MET) by using the +/- keys. For the values to set, see paragraph 3.2 “Predicted Mean Vote PMV and Predicted Percentage of Dissatisfied PPD”.

  • Page 31: Probes Preparation And Maintenance

    6 PROBES PREPARATION AND MAINTENANCE Probes necessary for WBGT index measurement: TP3276.2 or TP3275 HP3201.2, HP3201 or TP3204S TP3207.2 or TP3207 Probes necessary for PMV/PPD indices measurement: AP3203.2 or AP3203 TP3276.2 or TP3275 HP3217.2 or HP3217R HD32.3TC V1.1...
  • Page 32 The probes are already factory calibrated. The calibration data are stored in the SICRAM module memory. TP3575 and TP3276.2 globe thermometer probes Screw the globe to probe stem. HP3201.2 and HP3201 natural ventilation wet bulb probes • Remove the sensor cap (the cap is not screwed). •...
  • Page 33 Bottle Shield Cotton wick Reservoir Screws For measurements in presence of solar irradiation, use the protection shield from solar radiations. Note: over time the cotton wick tends to calcify (harden): it must be replaced periodically. HP3217R and HP3217.2R combined relative humidity and temperature probes •...
  • Page 34 • The sensor of AP3203 and AP3203.2 probes is heated. In case of vapours or gases, a fire or an explosion could be triggered. Do not use the probe in the presence of flammable gases. Make sure that in the environment where the measurement are made there are no gas leaks or potentially explosive va- pours.

  • Page 35: Instrument Storage

    7 INSTRUMENT STORAGE Instrument storage conditions: • Temperature: -25…+65°C. • Humidity: less than 90% RH without condensation. • During storage avoid locations where: • humidity is high; • the instrument may be exposed to direct sunlight; • the instrument may be exposed to a source of high temperature; •...
  • Page 36 Warnings on the use of the battery In order to prolong the battery life, do not allow it to discharge excessively: recharge the battery when the battery symbol on the display reaches the minimum level. Do not short-circuit the battery: it may explode with serious damage to persons. Additionally, to avoid any risk of explosion: •...

  • Page 37: Technical Characteristics

    9 TECHNICAL CHARACTERISTICS Power supply Rechargeable lithium internal battery External power supply unit (SWD05), to be connected to the mini-USB connector of the instrument If connected to PC, it is powered by the computer USB port (500 mA at least) At least 24 hours of continuous operation (starting from a fully Battery life charged battery) with display always on...
  • Page 38 TP3207 TP3207.2 TEMPERATURE PROBES Pt100 Sensor Accuracy: 1/3 DIN -40…100 °C Measuring range: 0.1 °C Resolution: Temperature drift 0.003 %/°C @ 20 °C Long term stability 0.1 °C/year 8-pole female DIN45326 connector Connection Cable L=2 m (only TP3207) Dimensions Ø=14 mm, L=140 mm (TP3207), L= 150 mm (TP3207.2) 15 minutes Response time T HP3201...
  • Page 39 HP3217R HP3217.2R TEMPERATURE AND RELATIVE HUMIDITY COMBINED PROBES Temperature: Pt100 Sensor R.H.: capacitive Temperature: 1/3 DIN Accuracy: R.H.: ±1.5% (0…90%RH) / ±2% (90…100%RH) @ T=15…35 °C (1.5 + 1.5% measure)% @ T= remaining range Temperature: -40…100 °C Measuring range: R.H.: 0…100% Resolution: 0.1 °C / 0.1 %RH 0.02 %RH/°C...

  • Page 40: Ordering Codes

    10 ORDERING CODES Data logger for thermal microclimate analysis. Three inputs for probes with HD32.3TC SICRAM module. Color graphic touch display. USB and Wi-Fi connection. Lithium battery rechargeable via USB. Equipped with microphone and camera for re- cording vocal and visual comments. Includes DeltaLog 10 software downloadable from Delta OHM website.
  • Page 41 Accessories VTRAP30 Tripod, maximum height 280 mm. VTRAP32.2A.3A Tripod for measurements with probes with cable. Probes Support to be fixed to the VTRAP32.2A.3A tripod. HD32.2.7.1 CP31 USB cable with male mini-USB connector on instrument side and male A type USB connector on PC side. PC connecting cable with built-in RS485/USB converter.
  • Page 42 OTES HD32.3TC V1.1...
  • Page 44 G U A R A N T E E TERMS OF GUARANTEE All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement.
  • Page 45 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
  • Page 46 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com V1.1 03/04/2020...

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