HD21AB , HD21AB Delta Ohm , HD21AB Delta Ohm Vietnam

HD21AB , HD21AB Delta Ohm , HD21AB Delta Ohm Vietnam

Dai Ly Detal Ohm, Dai Ly Detal Ohm Vietnam, Detal Ohm Viet Nam, Detal Ohm Vietnam, HD21AB, HD21AB Delta Ohm, HD21AB Delta Ohm Vietnam,
GHM Group, GHM Group Vietnam, 
Dai Ly Detal Ohm, Dai Ly Detal Ohm Vietnam, Detal Ohm, Detal Ohm Viet Nam, Detal Ohm Vietnam
[ GB ]

HD21AB  and

HD21AB17

  IAQ  Monitors  are  bench-top/portable  instruments

manufactured  by Delta  Ohm  for  the  analysis  of  indoor  air  quality  (IAQ,  Indoor Air Quality).

The instruments simultaneously measure the parameters:

• Carbon Dioxide CO2

• Carbon Monoxide CO

• Atmospheric Pressure The HD21AB17 instrument also measures:

• Temperature

• Relative Humidity

and it calculates:

• Dew Point

• Wet Bulb Temperature

• Absolute Humidity

• Mixing Ratio

• Enthalpy

HD21AB  and HD21AB17  are  dataloggers  with  a  memory  capacity  of  67600 recordings, divided in 64 blocks. They use the DeltaLog10 software from version 0.1.5.3.

Reference  Standards:

ASHRAE  62.1  –  2004, Legislative  Decree  81/2008.

These  regulations  apply  to  all  confined  spaces  that  could  be  used  by  people.

Kitchens, baths, changing rooms and swimming pools are included, due to the

presence of high humidity. You should take into account, in regard to air quality,

possible chemical, physical and biological contaminants.

The  instruments  have  a  wide  Dot  Matrix  graphic  display  with  a  resolution  of

160x160 dots.

The instruments typical applications are:

• Measurement  of  IAQ  (Indoor Air  Quality)  and  comfort  conditions  in  schools, offices and indoor spaces.

• Analysis and study of the Sick Building Syndrome, and of the resulting consequences.

• Checking the HVAC (Heating,  Ventilation  and  Air  Conditioning)  system  efficiency.

• Examination of IAQ conditions in factories to optimize microclimate and improve productivity.

• Building Automation checks.

Instrument Technical Data

Instrument

Dimensions

(Length x Width x Height)

210x90x40 mm (HD21AB)

300x90x40 mm (HD21AB17 with probe)

Weight

470 g (batteries included)

Materials

ABS, rubber

Display

Backlit, Dot Matrix

160x160 dots, visible area 52x42 mm

Operating conditions

Operating temperature

-5...50°C

Storage temperature

-25...65°C

Working relative humidity

0 ... 85% RH without condensation

Instrument uncertainty

± 1 digit @ 20°C

Power

Mains adapter (code SWD10)

12Vdc/1A

Batteries

4 x 1.2V Ni‑MH rechargeable batteries AA type

Autonomy

8 hours of continuous use in measure mode

Power absorbed

with instrument off

< 45μA

Security of stored data

Unlimited

Serial interface:

Socket:

mini-USB

Type:

USB 1.1 or 2.0 not insulated

Baud rate:460800

Data bits:8

Parity:None

Stop bits:1

Flow control:Xon-Xoff

Cable length:Max 5 m

Memory

Divided in 64 blocks.

Storage capacity

67600 recordings.

Logging interval

Selectable among: 15, 30 seconds, 1, 2, 5, 10,

15, 20, 30 minutes and 1 hour.

 

Logging interval

Storage capacity

Logging interval

Storage capacity

15 seconds

About 11 days and 17 hours

10 minutes

About 1 year and 104 days

30 seconds

About 23 days and 11 hours

15 minutes

About 1 year and 339 days

1 minute

About 46 days and 22 hours

20 minutes

About 2 years and 208 days

2 minutes

About 93 days and 21 hours

30 minutes

About 3 years and 313 days

5 minutes

About 234 days and 17 hours

1 hour

About 7 years and 261 days

Technical data of the sensors

CO

2

 Carbon Dioxide

Sensor

NDIR Dual Wavelength

Measurement range

0 ... 5000ppm

Sensor working range

-5 ... 50°C

Accuracy

±50ppm+3% of measurement

Resolution

1ppm

Temperature dependence

0.1%f.s./°C

Response time (T

90

)

< 120 sec (air speed = 2m/sec)

Long-term stability

5% of measurement/5 years

HD21AB17

CO Carbon Monoxide

Sensor

Electrochemical cell

Measurement range

0 ... 500ppm

Sensor working range

-5 ... 50°C

Accuracy

±3ppm+3% of measurement

Resolution

1ppm

Response time (T

90

)

< 50 sec

Long-term stability

5% of measurement/year

Service life

> 5 years in normal environment conditions

Atmospheric Pressure Patm

Type of sensor

Piezo-resistive

Measurement range

750 ... 1100 hPa

Accuracy

±1.5 hPa @ 25°C

Resolution

1 hPa

Long-term stability

2hPa/year

Temperature drift

±3hPa with temperature -20 ... +60°C

Relative Humidity RH (HD21AB17 only)

Type of sensor

Capacitive

Sensor protection

Stainless steel grid filter (on request 20μm sin-

tered filter P6 in AISI 316 or 10μm sintered filter

P7 in PTFE)

Measurement range

0 ... 100 % RH

Sensor working range

-20 ... +60°C

Accuracy

±2% (10÷90% RH) ±2.5% in the remaining range

Resolution

0.1°C

Temperature dependence

±2% on all temperature range

Hysteresis and repeatability

1% RH

Response time (T90)

< 20 sec (air speed = 2m/sec) without filter

Long-term stability

1%/year

Temperature T (HD21AB17 only)

Type of sensor

NTC 10kΩ

Measurement range

-20 ... +60°C

Accuracy

±0.2°C ±0.15% of measurement

Resolution

0.1°C

Response time (T

90

)

< 30 sec (air speed = 2m/sec)

Long-term stability

0.1°C/year

ORDERING CODES

HD21AB:

IAQ  Monitor  datalogger  kit.  It  measures  CO,  CO2  and  atmospheric pressure. Equipped with:

DeltaLog10

 software (version 0.1.5.3 and later)

for data download, monitor, and data processing on Personal Computer, 4

x 1.2V NiMH rechargeable batteries, operating manual, case.

The cables

must be ordered separately.

HD21AB17:

IAQ  Monitor  datalogger  kit.  It  measures  CO,  CO

2

,  atmospheric

pressure,  temperature  and  relative  humidity.  Equipped  with:

DeltaLog10

software (

version 0.1.5.3 and later

) for data download, monitor, and data

processing on Personal Computer, 4 x 1.2V NiMH rechargeable batteries,

operating manual, case.