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Working Hours

Mon - Fri: 08:00 - 16:00 (EET)
Sat: Closed
Sun: Closed

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Measuring Instruments for Indoor Environmental Quality Assessment

Model 535 - for measurement of CO2 concentrations

Model 535, is a handheld CO2 measuring instrument with permanently attached probe, batteries and calibration protocol

Model 535 is an efficien CO2 measuring instrument for measuring indoor air quality. Bad air quality in rooms can lead to tiredness, lack of concentration and illness (Sick Building Syndrome) due to high CO2 concentration (greater than 1000 ppm)

Long-term monitoring based on maximum and mean calculation
Long-term stable 2 channel infrared sensor
Highly accurate, highly efficient
Repeated calibration is unnecessary

Technical Data

Display LCD, 2 lines
Storage temperature -20 to +70 °C
Operating temperature 0 to +50 °C
Battery type 9V block battery
Battery life 6 h
Weight 300 g
Dimensions
190 x 57 x 42 mm
Material/Housing ABS
Probe type CO2
Meas. Range 0 to +9999 ppm CO2
Accuracy ±(50 ppm CO2 ±2% of mv) (0 to +5000 ppm CO2)
±(100 ppm CO2 ±3% of mv) (+5001 to +9999 ppm CO2)
Resolution
1 ppm CO2

Model 545 - for light quality measurements

Model 545, light meter, incl. probe, battery and calibration protocol

In order to have good quality light, luminous intensity in the workplace, hospitals, offices or schools has to fulfill specific minimum guidelines. This can be checked using model 545.

Meas. range 0 to 100,000 Lux
Resolution can be switched 0 to 32,000 Lux 1 Lux
0 to 100,000 Lux 10 Lux
Accuracy To DIN 5032, part 6
F1 = 8%
F1 = V (l ) adaption
F2 = 5%
F2 =cos like rating
Multi-point or timed mean calculation
Stores up to 99 file locations
Logger function (3000 readings)
Quick documentation on site on the printer
Dimensions 220 x 68 x 50 (instrument)
Weight 500 g (incl. Packaging)

4 T

OPTIONAL
printer with wireless IRDA and infrared interface, 1 roll of thermal paper and 4 AA batteries (for data print outs on site)
Transport case (plastic) for measuring instrument, probes, accessories

Model 816 - for noisel level measurements

Sound level meter, accuracy class 2, incl. microphone, wind protection cap, battery, stereo jack 3.5 mm, in a practical measurement case

Compared to model 815, the larger model has additional features which make it ideal for assessors, workplace measurements and for measuring industrial and environmental noise.

Accuracy class 2 to IEC 60651
Easy to adjust (adjustment screwdriver included)
Frequency weighting to characteristic A and C
Maximum and minimum memory
Built-in tripod knuckle screw (1/4 inch)
High accuracy level (Class 2)
Switchable time weighting Fast / Slow
Automatic range switchover
Backlit display
Mains unit connection
BarGraph display
AC output to connection from recorders and amplifiers
DC output with 10 mV/dB to connect recorders or dataloggers
816:
Time weighting
Section measurement range
Frequency weighting
Current reading
Automatic range switchover
Backlit display
Mains unit connection
Bar graph display
AC output for connecting recorders and amplifiers
DC output with 10 mV/dB for connecting recorders or data loggers

Sound level calibrator

Calibrator, for regular calibration of models 815, 816
Sound pressure level: 94dB(A)/104dB(A) adjustable
Frequency: 1000Hz
Accuracy: +0,5dB
Battery type: 9V block battery

Model 625 - for measurements of ambient relative humidity and temperature

a humidity/temperature measuring instrument, incl. plug-in humidity probe head, battery and calibration protocol

The compact instrument with built-in humidity probe head for measuring air moisture and temperature. The large 2 line display shows humidity, wet bulb temperature or dewpoint as well as temperature. When measuring at hard-to-access points, the humidity probe head can be easily removed and attached to the handle via the probe cable (accessory). Alternatively, the readings can be transmitted wirelessly over wide distances from the probe to the measuring instrument. To do this, the humidity probe head is attached to the radio handle (accessory) and the radio module (accessory) is added to model 625.

Displays temperature and relative humidity / wet bulb temperature / dewpoint
Max./min. values
Hold button to freeze readings
Display light
Auto Off function
TopSafe, the indestructible protection case (optional)
Patented humidity sensor
2 year guaranteed long-term stability
TopSafe, instrument protection against dirt and knocks

Technical

Storage temperature -40 to +85 °C
Operating temperature -20 to +50 °C
Battery type 9V block battery, 6F22
Battery life 70 h (without radio operation)
Weight 195 g
Dimensions 182 x 64 x 40 mm
Material/Housing ABS
Probe type NTC
Meas. range -10 to +60 °C
Accuracy ±0.5 °C
Resolution 0.1 °C
Probe type Type K
Meas. Range -200 to +1370 °C
Resolution 0.1 °C
Probe type humid. sensor, cap.
Meas. Range 0 to +100 %RH
Accuracy ±2.5 %RH (+5 to +95 %RH)
Resolution 0.1 %RH

model 425 - for measurements of ventilation quality

model 425, is a thermal anemometer with permanently attached flow probe (∅ probe head 7.5 mm), incl. temperature measurement and telescopic handle (max. 820 mm), battery and calibration protocol

The compact model 425 anemometer with permanently attached thermal flow probe (probe head ∅ 7.5 mm) incl. telescopic handle. Volume flow is shown directly in the display. Accurate volume flow calculation thanks to easy input of duct area. In addition, it is also possible to switch to the current temperature reading. Timed and multi-point mean calculation provide information on mean volume flow, flow speed and temperature reading. Min/max values can also be shown in the display. The Hold function makes it possible to freeze current readings in the display.

Temperature, flow and volume flow measurement
Multi-point and timed mean calculation
Max/min values
Hold button to freeze readings
Display light
Auto Off function
TopSafe, the indestructible protective case (optional)
TopSafe, instrument protection against dirt and knocks

Technical

Storage temperature -40 to +85 °C
Operating temperature -20 to +50 °C
Battery type 9V block battery, 6F22
Battery life
20 h
Weight 285 g
Dimensions 182 x 64 x 40 mm
Material/Housing ABS
Probe type NTC
Meas. range -20 to +70 °C
Accuracy ±0.5 °C (0 to +60 °C)
±0.7 °C (remaining range)
Resolution
0.1 °C
Probe type Thermo
Meas. Range 0 to +20 m/s
Accuracy ±(0.03 m/s +5% of mv)
Resolution 0.01 m/s

Model 435

- the multifunction instrument for measurement of every application in buildings, air conditioning and ventilation.

The Model 435 allows indoor air analysis. This serves both as an indicator of human well-being and as a decisive and important factor in storage and production processes. Moreover, indoor air quality (IAQ) informs whether the air conditioning / ventilation provides optimal energy use.

To determine the indoor air quality the available measurement parameters are CO2, relative humidity and indoor air temperature. In addition to these we can also measure absolute pressure, turbulence (air flow), the light intensity (Lux), the coefficient U (U-value) and the surface temperature.

An extensive selection of sensors is available for this purpose:It covers all the necessary parameters for conditioning technology: flow velocity, humidity, temperature, pressure, absolute pressure, Lux and CO 2, with optional wireless or conventional sensors with cable connection. Perfection to the last detail with the well known quality instruments that we provide.

480 - The Ultimate in Accurate Indoor Climate Measurement

A comfortable environment indoors is a key factor to productivity at the office, health at home, and safe storage at an industrial location. When adjustments are required, HVAC professionals work to identify problems quickly, so that indoor conditions are adjusted and comfortable once again.
The 480 IAQ Pro is the latest in cutting-edge measurement technology providing the most accurate indoor climate measurements, like temperature, humidity, CO2, airflow and even light.

Cutting-edge technology for professional air-conditioning engineers

The 480 provides support to consultants, experts, technical service providers and service technicians in the field of ventilation and air conditioning, for all measuring tasks. With this one measuring instrument and its digital probes, you can record parameters such as flow, temperature, humidity, pressure, illuminance, radiated heat, degree of turbulence and CO²

If it is too hot in the workplace or if there is a draught, then the air-conditioning/ventilation system is probably not correctly adjusted. With the new VAC measuring instrument 480, you can now adjust ventilation and air-conditioning systems in compliance with the standards quickly and easily. Record all relevant climatic parameters in residential and office areas in an instant.

The intelligent probes mean that you are equipped for any application and guaranteed completely reliable measuring results. Deviations are automatically eliminated following calibration. You obtain a zero-error display. The probes notify 480 as soon as the next calibration is due.

Advantages of the 480 IAQ Pro
• Reliable Measurements
The perfect combination of a highly accurate, rugged hand-held instrument and a wide variety of probes to meet the needs of
HVAC and T&B professionals.
• Save Calibration Time
Intelligent probes retain calibration information and increase productivity in the field.
• Manage Data
Use the easy software to simplify data handling of large jobs and maintain stored profiles.
• Save Time
Perform multiple measurements simultaneously.
Probe Variety
Choose from a wide selection of probes to match any measurement need.
• SD-card and USB-interface for simple, flexible data exchange.
• Save energy costs by having HVAC systems that are adjusted efficiently.
• Optimise the comfort level in living quarters and workplaces.
• Save time with the trackpad and graphics display.
• Impress your customers with fast, on-site measuring results, analyses and reports.

Ιndoor climate monitors

- using the most advanced technology available today.

Temperature, barometric pressure and humidity are shown simultaneously on one easy-to-read display. Monitor your wine cellar, greenhouse or any other climate dependent area. Racers can calculate the air density index to accurately tune the car's carburator. Requires virtually no installation. Comes complete with power adapter and detailed instruction book.

Available in versions:
EU (Europe) radio frequency 868 MHz (on units equipped with wireless transmission) Station reports in Metric units
US (United States) uses US radio frequency from 902 to 928 MHz (on units equipped with wireless transmission) Station reports in US standard units

The console provides A/D conversion, calculations, and data display. A DC-power adapter is included. Αn optional feature, provides data logging and a serial interface to a computer.

General
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -20° to 60° C (-5° to 140° F)
Display Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 60° C (32° to 140° F)
Supply Power (adapter included) . . . . . . . . . . . . . . . . . . . 16 mA (typical) at 10 to 16 V (100 mA when display is illuminated)
Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black ABS plastic
Display Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LCD
Dimensions
Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 mm x 137 mm x 76 mm (5.25" x 5.4" x 3.0")
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 mm x 48 mm (4.4" x 1.9")
Weight, total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.53 kg (3 lbs. 6 oz.)

Data Displayed On Console
All data display categories are displayed in alphabetical order:
Barometric Pressure (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . .Measured in 0.01" Hg. Other units are converted from Hg and rounded
to nearest 0.1 mm, 0.1 hPa, 0.1mb.
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.00" to 32.00", 660.0 to 810.0 mm, 880.0 to 1080.0 hPa
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.05", ±1.3 mm, ±1.7 hPa (at room temperature)
Trend (change in 1 hour) . . . . . . . . . . . . . . . . . . . . . . . . . ±0.2", ±5.0 mm, ±7.0 hPa
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Barometric Pressure, Current Barometric Pressure Trend, Stored Barometric Pressure Reading
General
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 seconds
Times and Dates of Maximum and Minimum Values . . . . Stored with value
Inside Temperature (Ai r ) (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 or 0.1°F or 1 or 0.1°C.°. Celsius is converted from Fahrenheit
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 140° F (0° to 60° C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C)
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Temperature (high and low alarms), Maximum and Minimum Temperatures, Relative Humidity
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1%
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 90% RH
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5%
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Inside Relative Humidity (high and low alarms), Maximum and
Minimum Relative Humidity Values
Time
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 seconds/month
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Time, Current Date

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