COMMETER - Thermometer Hygrometer Barometer and Data Logger

Image of barometer

Thermometers, hygrometers, barometers are designed for measurement and datalogging of temperature, relative humidity and atmospheric pressure into the internal non-volatile memory. Also barometric pressure tendency reading available. Free PC program enables to transfer recorded data via RS232 serial link to the computer for evaluation. Data logger is connected to the PC through included communication cable only for data trasfer from the memory. During connection with the PC no measurement and record is enabled.

Advantages:

included traceable calibration certificate
dual line LCD display with special symbols
dew-point reading
barometric pressure tendency reading for last three hours
adjustable dual alarm with audio indication for each channel
memory of minimum and maximum values
function Hold - manual storing of actual values for later displaying

COMMON TECHNICAL PARAMETERS
Operating temperature range:	-10 to +60°C
Temperature sensor:	RTD Ni1000/6180ppm
Accuracy of temperature measurement with built-in sensor:	±0.4°C
Accuracy of temperature input without probes - D3631 instrument:	±0.2°C from -50 to +100°C, ±0.2% from reading from 100 to 250°C
Accuracy of air humidity measurement:	±2.5%RH from 5 to 95% at 23°C, resolution 0.1%
Accuracy of dew point measurement: - see details in graph	1.5 °C at ambient T < 25°C and RH>30% range -40 to +60 °C, range -60 to +80 °C models D3121, D4141
Accuracy of air pressure measurement:	±2hPa at 23°C, resolution 0.1hPa
Barometric pressure tendency reading:	in hPa - for last three hours
Power:	battery 9V
Battery life:	4 months typically (barometer 2 months typically)
Dimensions:	141 x 71 x 27mm
Modes of data logging:	1. manual logging - capacity of 1000 stored value sets 2. automatic noncyclic logging (logging stops after filling the memory) - total capacity of 16000 values 3. automatic cyclic logging (logging continues after filling the memory - oldest values are being replaced by newest) - total capacity approx. 15200 values
Real time clock:	year, leap year, month, day, hour, minute, second
PC interface:	serial RS232
Sampling interval in data logging mode:	18 adjustable values from 10s to 24hours
Warranty:	two years


Type of data logger	Measuring range	Manual in pdf format
D3120 - Thermometer - hygrometer - simultaneous reading of temperature and relative humidity, dew point temperature reading selectable, built-in sensors.	temperature -10 to +60° relative humidity 5 to 95% dew-point from 30 to 90%RH
D3121 - Thermometer - hygrometer - simultaneous reading of temperature and relative humidity, dew point temperature reading selectable, external temperature-humidity probe with 1meter cable. Cable lengths 2 and 4 meters available optionally. Probe diameter is 18mm, length 135mm.	temperature -30 to +105°C* relative humidity 0 to 100% dew-point from 30 to 90%RH
D3121P - Thermometer - hygrometer - temperature and relative humidity reading, dew point temperature reading selectable, external probe from hard anodized duralumin with 1m cable. Cable lengths 2 and 4 meters available optionally.	temperature -30 to +105°C* relative humidity 0 to 100% dew-point from 30 to 90%RH For compressed air up to 25 bars.
D3631 - Thermometer - hygrometer - temperature and air relative humidity reading, dew point temperature reading selectable, built-in sensors. A Cinch connector for connection of an external RTD Ni1000/6180ppm temperature probe. Surface, pointed-tip, insertion and other probes with Cinch connector are available. Indication of temperature difference of external probe and dew point. Audio and visual alarm for the temperature difference e.g. for monitoring of condensation or mould creation.	air temperature -10 to 60° probe temperature -50 to 250° relative humidity 5 až 95% dew-point from 30 to 90%RH
D3633 - Thermometer - hygrometer - simultaneous reading of temperature and air relative humidity, dew point temperature reading selectable, built-in sensors. Surface temperature probe with attaching magnets on the instrument bottom. Indication of temperature difference of surface probe and dew point. Audio and visual alarm for indication of the temperature difference.	air temperature -10 to 60° surface temperature -10 to 60° relative humidity 5 to 95% dew-point from 30 to 90%RH Magnetic surface probe for surface coating application!
D4130 - Thermometer - hygrometer - barometer - simultaneous reading of temperature and air relative humidity, dew point temperature and air pressure reading selectable, built-in sensors, barometric pressure tendency reading for last 3 hours.	temperature -10 to 60° relative humidity 5 to 95% dew-point from 30 to 90%RH atmospheric pressure 800-1100hPa
D4141 - Thermometer - hygrometer - barometer with external air temperature-humidity probe on a 1 meter cable. Cable lengths 2 and 4 meters available optionally. Probe diameter is 18mm, length 135mm. Built-in indoor temperature and air pressure sensors. Dew point temperature reading, barometric pressure tendency reading for last 3 hours.	external temperature -30 to +105* internal temperature -10 to +60°C relative humidity 0 to 100% dew-point from 30 to 90%RH atmospheric pressure 800-1100hPa

humidity probe for compressed air Figure: Humidity probe for D3121P for compressed air up to 25 bars
- hard anodized duralumin, stainless steel mesh filter moulded in polycarbonate

measuring chamber
Figure: Flow chamber SH-PP for compressed air measurement up to 25 bars - stainless steel

Included accessories

Traceable calibration certificate from the manufacturer, instruction manual. Calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.
Example of calibration certificate.

Included is also plastic transport case, battery 9V, communication cable for data logger and self adhesive Dual Lock for easy mounting. Included is also simple software for Windows for reading information on instrument, setting the real time clock, for data transfer to a computer, for viewing and printing data in numerical and simple graphic format. It is possible to export recorded data to dbf or txt formats. Data loggers are equipped with connector for external ac/dc adapter.

Anytime it is possible to download free basic Windows program for data logger . Program enables to control all data logger functions and viewing and printing of record in numerical and simple graphic format. It is possible to export recorded values to dbf or txt formats for further analysis.

OPTIONAL ACCESSORIES
	SW100	CD with free PC program for data logger
	MP006	RS232/USB converter for communication with the PC via USB port
	A1515	adapter 230V-50Hz/12Vdc. 9V battery should be replaced with NiMH accumulator 9V.
	A3400	NiMH accumulator 9V
	F5200B	sensor cover with filter from stainless steel mesh for thermo-hygrometer D3121, D4141, filtering ability 0.025mm
	F0000	sensor cover from sintered bronze for thermo-hygrometers D3121, D4141, filtering ability 0.025mm
	PP4	flat circular flange - for mounting of external probe of thermohygrometers D3121, D4141
	PP90	right-angled stain-less steel flange for mounting of external probe of thermohygrometers D3121, D4141
	F8000	Solar radation shield for D3121, D4141
	SH-PP	Flow chamber for compressed air measurement up to 25 bars - stainless steel DIN 1.4301 inlet and outlet connection - G1/8 thread humidity probe connection - G1/2 thread screw-coupling not included
	SWR004	optional Windows software for data logger - color printing, vertical and horizontal zooming of graphs and other functions.
		accessory for calibration and adjustment of hygrometer by the user

Declaration of Conformity for all Dxxxx instruments in pdf