Schmidt DHT-2, Operating Instructions Manual

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8
3.4 Measuring Procedure
General information:
The measuring principle of the DHT-2 moisture meter is based on the electrical conductiv-
ity of the material which always bears a fixed relation to the moisture.
The moisture meter displays direct readings for the materials listed in the table below. For
other materials, note the reading on the upper 0 - 100 scale and then refer to the conver-
sion charts in Chapter 3.4.1 to convert the absolute reading into an accurate measurement
of percent moisture.
Display Measuring Range
CENT.
DEG.
Room temperature
Requires use of electrode no. 428 (optionally available)
% R.H. Room air humidity
Requires use of electrode no. 428 (optionally available)
0 - 100
1 - 100 scale
WOOL
Wool (Wo)
RAYON Rayon (Zw)
COTTON Cotton (Bw)
HEMP Hemp (HA)
JUTE
Jute (JU)
PAPER
Paper
FLAX YARN Flax Yarn (FL (Li))
NYLON Nylon
ACRYL Polyacrylic (PA)
POLYESTER
Polyester (PES)
50WO - 50ZW
50% Wool (Wo) - 50% Rayon (Zw)
60BW - 40PES 60% Cotton (Bw) - 40% Polyester (PES)
70PAC - 30WO 70% Polyacrylic (PAC) - 30% Wool (Wo)
67PAC - 33BW 67% Polyacrylic (PAC) - 33% Cotton (Bw)
70PES - 30WO 70% Polyester (PES) - 30% Wool (Wo)
70PES - 30ZW
70% Polyester (PES) - 30% Rayon (Zw)
67PES - 33BW
67% Polyester (PES) - 33% Cotton (Bw)
50PES - 50BW
50% Polyester (PES) - 50% Cotton (Bw)
50PES - 50ZW 50% Polyester (PES) - 50% Rayon (Zw)
50PES - 50PAC 50% Polyester (PES) - 50% Polyacrylic (PAC)
Requirements
:
- Proper electrode inserted and connected to DHT-2 as described in Chapter 3.3.3.
To take measurements :
- Press the key to switch on the DHT-2 moisture meter.
The DISPLAY shows the measuring range that was active the last time the instrument
switched off.
- Press the or key for about 2 sec. to select the next or previous
measuring range (as listed in the table above).