The HD 2020 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations. It allows calibrating ½" microphones with mechanical dimensions compliant with IEC 61094-1 ("Measurement microphones. Part 1: Specifications for laboratory standard microphones") and IEC 61094-4 ("Measurement microphones. Part 4: Specifications for working standard microphones"). The calibration pressure levels of 94dB and 114dB can be selected by the keypad. The 1000 Hz frequency cannot be changed.
If the microphone is absent or not inserted correctly into the calibrator cavity, the sound level will blink on the display.
To conserve battery life, the instrument is provided with an automatic power off function: if you leave the instrument on with open cavity, it switches off automatically after 30 seconds. If the cavity is closed and the microphone is inserted, the instrument switches off 5 minutes after turning on, provided that you don't press any key.
The calibrator display shows calibration pressure level, battery life, current date and time.

Sound level calibrator class 1 according to IEC60942:2003 with LCD display. ISO 9001 calibration report included.

Advantages of the HD 2020 Sound level calibrator are:
• The 1000Hz frequency allows calibrating sound level meters with any weighting (LIN, A, B,...), without applying any correction factor.
• The calibration sound pressure level is independent of atmospheric pressure: you don't need to adjust the value according to static pressure over a wide range of values.
• The HD 2020 calibrator can be conveniently used both in laboratory and in the field. The 114 dB sound level allows performing calibrations even in high background noise environments.
• Its simplicity of use allows the use even by unskilled personnel.
• The presence of the LCD helps you through the steps of setting the calibrator, signal the end of the span and allows you to check the status of the battery.

ACOUSTIC CALIBRATOR
1. ON-OFF key: turns on and off the instrument. When you turn the instrument on, the display will switch on about three seconds later.
2. SETUP key: allows you to enter and scroll menu. To exit, press it repeatedly until you go back to the standard screen.
3. Display. When you turn the instrument on, it shows all segments on, and then the sound pressure level (94 or 114dB) will appear in standard view.
4. Calibrator cavity for conventional ½ inch microphones.
5. Down: in standard mode, it selects 94dB and 114dB pressure levels alternately. In menu mode, it decreases the current value.
6. Up: in standard mode, it selects 94dB and 114dB pressure levels alternately. In menu mode, it increases the current value.
7. Battery lid.

More products SENSECA

DATALOOGER WITH MICROCLIMATE ANALYSIS WBGT DELTA OHM HD32.2 HD32.2A

• analysis of WBGT index (Wet Bulb Glob Temperature: wet bulb temperature and globe thermometer temperature) in presence or in absence of solar radiation
• Logging
• data transfer speed via the RS232 serial port
• The measurement unit of the temperature: °C, °F, °K
• Date and time of the instrument
• display of maximum, minimum, medium statistic parameters and their deletion

3-CHANNEL MULTIFUNCTION AIR PARAMETERS MONITORING DATALOGGER DELTA OHM DO9847

• Multifunctional handheld board instrument and datalogger
• RH, temperature, pressure, airspeed, light, voltage, current
• 128x64 pixel (56x38 mm) graphic display and three independent inputs
• Functions: watch, hold, max., min., average, record, immediate or deferred start record logging, difference between the two inputs, relative measures
• Storage capacity: 32.000 readings per input.
• RS232C serial output: from 300 up to 115.200 baud rate.

LABORATORY BENCHTOP CONDUCTIVITY-METER-THERMOMETER WITH LIQUID RESISTIVITY, DISSOLVED SOLIDS TDS DELTA OHM HD2206.2

• Bench-top conductivity meter-Thermometer with back-lighted display,
• with inputs for measurements of conductivity, liquid resistivity, total dissolved solids (TDS) and the salinity by conductivity and temperature
• combined probes with 2 or 4 electrodes with direct input or with SICRAM module.
• Datalogger of conductivity or resistivity or TDS and temperature.
• RS232 C or USB 2.0 serial output for data download to a PC or printer from memory or in real time.
• Input for Pt100 or Pt1000 temperature probes provided with SICRAM module.

DATALOGGER FOR PRESSURE, TEMPERATURE, FLOW RATE DELTA OHM DO9704

• Datalogger for pressure, flow rate and temperature measurements with 2 inputs,
• memory 512 Kbytes,
• storage of maximum, minimum and average value.
• RS232 C output

PORTABLE CLASS I INTEGRATING SOUND LEVEL METER WITH SPECTRUM ANALYSIS ANS STATISTICS DELTA OHM HD2010

• precision integrating portable sound level meter
• data logging functions
• performing both spectrum and statistical analysis
• maximum flexibility and simplicity
• firmware can be directly updated by the user by means of the Noise Studio program supplied with the instrument
• Class 1 sound level meter according to IEC 61672-1, 2002
• Class 1 octave and third octave filters according to IEC 61260
• Microphone complying with IEC 61094-4
• Noise monitoring and optional capture and analysis of sound events
• Octave and optional third octave band spectrum analysis from 16 Hz to 20 kHz

THREE-CHANNEL VIBRATION ANALYZER FOR WORKERS PROTECTION DELTA OHM HD2070

• portable vibration analyzer performing spectral and statistical analysis on three channels simultaneously
• measures all parameters required by current regulations concerning workers protection from vibration related risks
• measure vibrations transmitted to both hand-arm and whole body
• simplicity of use with maximum flexibility
• possibility of updating the instrument according to the evolution of the regulations relating to vibration measurement
• Octave and third octave filters, available as option (HD2070.O1), satisfy class 1 specifications of IEC 61260 standard

LABORATORY BENCHTOP CONDUCTIVITY-METER-THERMOMETER WITH LIQUID RESISTIVITY, DISSOLVED SOLIDS TDS DELTA OHM HD3406.2

• Bench-top Conductivity meter-Thermometer measures conductivity, liquid resistivity,
• total dissolved solids (TDS) and salinity by 2 or 4 electrodes,
• combined conductivity probes and temperature by Pt100 or Pt1000 probes.
• Datalogger which stores maximum, minimum, average value, it can store up to 36,000 samples.
• RS232 C serial output or USB 2.0 for data download to a PC or printer from memory or in real time.
• Functions: REL, HOLD, auto power off which can be disabled.,
• protection degree IP 66

PLUVIOMETER RAIN GAUGE FOR ATMOSFERIC PRECIPITATION DELTA OHM HD2013

• Rain gauge with tipping bucket,
• area 400cm2,
• for temperature range +4°C... +60°C.
• Standard resolution 0.2.
• On request at the time of placing the order resolution 0.1 or 0.5mm.
• Output contact normally closed.

PORTABLE PH-METER WITH THERMOMETER DELTA OHM HD2305.0

• pHmeter-Thermometer which measures pH, mV and temperature.
• Storage of maximum, minimum, average value.
• Functions: REL, HOLD and auto power off which can be disabled,
• IP 67 protection degree.

THERMOPILE PYRANOMETER FOR MEASURE INCOMING GLOBAL SOLAR RADIATION DELTA OHM LP PYRA02 PYRA03 PYRA12

• First class pyranometer according to ISO 9060.
• Complete with: shade disk, sachet with silica-gel crystals, 2 cartridges, levelling device and calibration report.
• On request 5 or 10m cables with connectors