CESVA TA120 Operating manual
08030 Barcelona (Spain) F. (34) 933.479.310 www.cesva.com
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TA120
TA120 NOISE SENSOR MAINTENANCE GUIDE
Noise measuring sensor
ACOUSTIC SENSITIVITY VERIFICATION
The TA120's sensitivity check should be performed with a Class 1 calibrator with metrology and current
checks, preferably always using the same calibrator on each of the TA120 sensors to be verified, and
the CESVA Sensor Manager configuration software. To carry out the sensitivity check of the TA120, the
following steps must be followed:
1. Remove the 4 screws on the front cover with a screwdriver type PH2x100. Remove the front cover.
2. Unscrew clockwise the bottom of the outdoor kit TK120 and carefully remove until you see the mi-
crophone.
3. Ensure that the TA120 sensor is on (POWER switch in ON position and LED ON lit), otherwise the
TA120 sensor must be powered.
4. Connect the USB cable between the TA120 sensor and PC. The USB connection of the TA120 sen-
sor is type B.
5. Run the "CESVA Sensor Manager" program on the PC and click "Connect".
6. Insert the microphone gently but firmly into the hole of the calibrator. Make sure it enters the cavity
fully in a position parallel to the calibrator axis.
MN_TA120_v0003_20220203_EN
EN
recommends an annual acoustic check and a check of the condition of the TK120 outdoor
kit. It also recommends check BA120/BA127 battery every two years, en if these have been installed.
08030 Barcelona (Spain) F. (34) 933.479.310 www.cesva.com
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TA120
TA120 NOISE SENSOR MAINTENANCE GUIDE
EN
Noise measuring sensor
7. Start up the calibrator and wait a minimum of 30 seconds for the sound level to stabilize, since when
introducing the calibrator, transients that last several seconds may have been created.
8. Check the level on the CESVA Sensor Manager software. Ideally a 93.9 dB level should be dis-
played. Otherwise, the following actions must be carried out:
• If the value is between 93.4 dB and 94.4 dB, the sensor is set correctly.
• If the deviation is greater than 0.5 dB, but not greater than 1 dB, no action is required, but we
recommend keeping the TA120 under observation until the next verification. Si If in the next
check it is still within this range, adjust the sensitivity with the help of the sound calibrator and
the “CESVA Sensor Manager” software”.
• If the deviation is greater than 1.0 dB, TA120 should be sent to the CESVA technical service.
9. Turn off the CESVA calibrator, and remove it from the sensor carefully.
10. Carefully to not damage the microphone, insert TK120 outdoor kit. Screw clockwise using the base
kit.
11. Finally, remove the USB cable type B of the sensor and through a screwdriver type PH2x100, close
and lock the 4 screws on the front cover of the TA120 .
08030 Barcelona (Spain) F. (34) 933.479.310 www.cesva.com
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TA120
TA120 NOISE SENSOR MAINTENANCE GUIDE
Noise measuring sensor
EN
VERIFICATION OF THE CONDITION OF OUTDOOR KIT TK120
Perhaps after some time, it is necessary to replace the outdoor kit TK120 due to the severity of environ-
mental conditions and because of being exposed to them. In this case, purchase a new outdoor kit
TK120 and follow these steps:
1. Turn contrary to clockwise the bottom of the outdoor kit TK120 and carefully lift the outdoor kit
TK120 to display the microphone.
2. Check the microphone and if necessary, remove dust carefully with a brush of very fine camel hair.
3. Carefully to not damage the microphone, insert TK120 outdoor kit and screw clockwise using the
base kit.
NOTE: We advise that the old TK120 outdoor kit to be sent to CESVA facilities for recycling (C/ Maracaibo 6, 08030, Barcelona. Tel: 934 335 240).
If the outdoor TK120 has been dropped or has any damage, the microphone may be damaged. In this case we recommend sending the full sensor to
CESVA facilities so the technical service performs a check of the microphone.
BA120/BA127 BATTERY CHECK
The typical life of the BA120/BA127 battery is 3 years, maintaining a minimum load of 15%. The number
of load cycles is 750 with 60% capacity.
It is recommended to review the BA120/BA127 battery after two years of use.
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