L) Temperature Measurement With Contact Sensor; M) Noise Level Measurement - VOLTCRAFT MULTI-DMM MT-52 - V09-10 Operating Instructions Manual

The long measuring time due to the build may cause deviations between the displayed
and the "actual" temperature and humidity in case of short measuring durations. The-
refore, this product must not be used for very exact measurements (e.g. quality-control
climate monitoring, etc.).

l) Temperature Measurement with Contact Sensor

Contact measurement is only permissible
with powered-down objects. Danger of elec-
tric shock!
Due to its build, the included wire sensor is
only designed for a measuring range bet-
ween -20 and +230 °C. With optional K-type
thermal sensors, the complete measuring
range of the DMM can be used.
Proceed as follows for the measurement:
- Switch on the DMM and select the measuring range accor-
ding to desired resolution: "1 °C" or "0.1 C".
- Connect the K-type measuring adapter to the "V" (+) and
"COM" (-) in the correct polarity.
- Connect the sensor to the measuring adapter in the correct polarity. The polarity is marked on the
plug.
- guide the measuring prod to the object to be measured. The measuredvalue is shown in the main
display in °C.
- Switch off DMM after measuring.
The measured temperature must only be applied to the measuring prod. The measu-
ring device must be in the specified environment to prevent measuring errors.

m) Noise Level Measurement

The sound level measurement is used as an orientation measurement to identify sources of sound. Eva-
luating measurement for documentation, etc. is not possible. The sound level is measured linearly (cha-
racteristic "C"), i.e. all sounds (low and high ones) are assessed equally. Thus, you will receive frequen-
cy-independent measured values that make comparison easier.
The measuring aperture for sound is at the upper left (16). During measurement, the measuring device
should be aligned at a right angle to the sound source.
Always wear hearing protection when working in loud environments to prevent
damage to your hearing.
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