Keterangan
HD37AB17D and HD37B17D are data loggers able to measure and store at the same time the following parameters:
• RH relative Humidity
• T Room Temperature
• CO Carbon Monoxide ( only HD37AB17D)
• CO2 Carbon Dioxide
HD37AB17D and HD37B17D are able to investigate and monitor the quality of indoor air.
Typical applications are examining the air quality in buildings where there are crowds of people ( schools, hospitals, auditoriums, cafeterias, etc...) and workplaces to maximize comfort and in general to see if there are small leaks of CO, with danger of explosion or fire. This analysis allows you to adjust the air conditioning ( temperature and humidity) and ventilation ( air change per hour) to achieve a double objective: to achieve good air quality in accordance with ASHRAE standards and current BMI and energy savings.
HD37AB17D and HD37B17D are instruments set to fight the so-called sick building syndrome. RH ( Relative Humidity) measurement is obtained with a capacitive sensor. T temperature is measured with a high precision NTC sensor. The sensor for the measurement of CO ( Carbon Monoxide, only for HD37AB17D) consists of two electrodes in an electrochemical cell suitable for detecting the presence of carbon monoxide, lethal for humans, in residential and industrial.
The measurement of CO2 ( carbon dioxide) is obtained with a special infrared sensor ( NDIR technology: Non-Dispersive Infrared Technology) that, by using a double filter and a particular
measurement technique, ensures accurate measurements and stable for a long time. The presence of a protective membrane, which is spread through the air portion, protects the sensor from dust and weather.
HD37AB17D and HD37B17D are data loggers capable of storing the measurements, every user preset.
HD37AB17D and HD37B17D can be connected to the PC via the USB input. Instruments are
supplied with DeltaLog13 software which manages the operations of connection to the PC, calibration of RH sensors, CO ( only HD37AB17D) and CO2, setting of the operating parameters of the instrument, data transfer, presentation graphics and printing of measurements acquired
or stored.
Technical Features
Dimensions 275 mm x 45 mm x 40 mm
Weight 230 g ( batteries included)
Materials ABS
Mains power supply ( code SWD06) Batteries charger 100-240Vac/ 6Vdc-1A
Batteries Package with 2 rechargeable batteries 1.2V
type AA ( NiMH)
Autonomy 8 hours of continuous working in
measurement mode
Current absorbed with 200¼ A
instrument off
Instrument working temperature 5° C ... 50° C
Working relative humidity 5% RH ... 95% RH no condensed
Temperature / Storage humidity -25° C ... + 70° C / 10% RH ... 90% RH
no condensed
Safety of the stored data Unlimited
Connections
USB interface USB 2.0 cable B type Baudrate 460800
Charger Batteries power supply 2 - poles connector ( positive at the centre)
( code SWD06) Output voltage: 6Vdc
Maximum current: 1600mA ( 9, 60 VA Max) .
Measuring rate 1 sample every three seconds
Storage capacity 20000 Records
Every records includes the followingf:
- date and time
- measurement of the carbon dioxide ( CO2)
- measurement of the carbon monoxide
( CO- only HD37AB17D)
- measurement of the relative humidity ( RH)
- measurement of the temperature ( T)
Logging interval selectable within: 3, 6, 12, 15, 30, 60 seconds, 2, 3, 4, 5 minutes.
The stored values represent the average value of the samples that are stored every
three seconds.
Printing interval selectable within: 3, 6, 12, 15, 30, 60 seconds, 2, 3, 4, 5 minutes.
The printed values represent the average value of the samples that are stored every
three seconds.
Sensor Features
Relative Humidity RH Capacitive sensor
Sensor protection Net filter made of stainless steel ( upon request
filter P6 in AISI316 sintered 20¼ m or filter P7
in PTFE sintered 10¼ m)
Measurement range 5...100 % RH
Sensor working range -20...+ 60° C
Accuracy ± 2% ( 10÷ 90% RH) ± 2, 5% in the remaining range
Resolution 0, 1%
Thermal effects ± 2% on all the temperature range
Hysteresis and repeatability 1% RH
Temperature dependence ± 2% on all temperature range
Response time ( T90) < 20 sec. ( air speed = 2m/ sec) without filter
Long term stability 1% / year
Temperature T
Sensor type NTC 10K©
Measurement range -20...+ 60° C
Accuracy ± 0.2° C ± 0.15% of the measure
Resolution 0, 1° C
Response time ( T90) < 30 sec. ( air speed = 2m/ sec)
Long term stability 0.1° C/ year
Carbon monoxide CO ( only HD37AB17D)
Sensor Electro chemical cell
Measurement range 0… 500ppm
Sensor working range -5… 50° C
Accuracy ± 3ppm+ 3% of the measure value
Resolution 1ppm
Response time ( T90) 5 years in normal environmental conditions
Carbon dioxide CO2
Sensor NDIR with a double wave length
Measurement range 0… 5000 ppm
Sensor working range -5… 50° C
Accuracy ± 50ppm+ 3% of the measurement
Resolution 1ppm
Thermal effects 0, 1% f.s./ ° C
Response time ( T90) < 120 sec. ( air speed = 2m/ sec)
Long term stability 5% of the measure/ 5 years
Prioritas Indotrade