Dametric
TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx
May 26, 2011 / BL
5(8)
4.
SETTINGS
The dipswitches are located
at the top of the unit and
should be adjusted during the
installation.
4.1
Transducer location setting
This setting is to be adjusted depending of the placement of the transducer, the type of refiner and
also the main motor rotation speed. The correct setting has to be established upon testing, but the
examples can serve as guidelines. The default setting at delivery is 66%.
SW1 /1
/2
/3
/4
% sensitivity Transducer location
(* default setting)
off off off off 100
VIM-T2 on a ROP 24, > 1200rpm
on
off off off 75
VIM-T2 on a ROP 32/36, > 1200 rpm
off on
off off 66 *
VIM-T2, TVD-T2 mounted on the plate holder bolt
off off on
off 50
TVD-T2S on a Conflo refiner
off off off on
33
TVD-T2S on a RGP refiner, < 1200 rpm
TVD-T1 on the TDC-sensor
on
on
on
on
20
TVD-T2S on a RGP refiner, > 1200 rpm
4.2
Production mode adjustment
The digital input, DI+PROD, is activated during the production mode, and will activate an attenuator
and a filter in the unit. An activated input is indicated by a led in the front panel, marked
"Production".
4.2.1 Frequency response
The dipswitch SW2 sets the frequency response during the production mode. The response can be
seen in the graphs on the following page. The high pass filter can be set in the range of 0.3 to 19 kHz,
and is used to reduce the low frequency signals during production. The higher frequency setting, the
higher the attenuation will be at lower frequencies. The setting has to be established upon testing, and
is dependent of the type of the plates and the rotation speed.
SW2 /1
/2
/3
/4
frequency in kHz.
(* Default setting)
off off off off 0.3
on
off off off 2
VIM-T2, TVD-T2S
off on
off off 4 *
”
“
off off on
off 6
”
“
off off off on
8
”
“
on
on
on
on
19
TVD-T1, TVD-T2
The settings together with the transducer type setting are shown in graph 4.4.1 and 4.4.2.
4.2.2 Gain
The gain is adjusted with a single-turn potentiometer in the front of the unit, and can be set between 5
and 50% of the normal gain. Adjust the potentiometer to the maximum gain and the lower the gain
during production.
4.3
Transducer Type setting
The low-pass filter must be set according to the transducer.
SW3 /1
/2
/3
/4
kHz
Type
off off off off
10
TVD-T2S, VIM-T2 (Default setting)
on
on
off off
15
Not used
off off on
on
35
Not used
on
on
on
on
40
TVD-T1, TVD-T2
