
8
SEIKOM-Electronic GmbH & Co. KG
Fortunastr.20
D-42489 Wülfrath
Telefon: +49(0) 20 58/20 44
Fax: +49(0) 20 58 / 79 111
E-Mail:
Internet:
http://www.seikom-electronic.de
DTM is an electronic pressure transmitter designed primarily to measure total and differential air
pressures in ventilation systems. The resulting measurements are used for monitoring, control and
regulation purposes via a regulator, PLC or monitoring system.
Typical applications include
-
The maintenance/control of constant pressure at a given position within the duct system.
-
The maintenance/control of desired underpressure within the duct system.
-
The measurement of pressure differentials across filters to determine optimum filter
replacement time.
-
Flow determination via differential pressure measurements across a standard aperture.
Function
DTM is a pressure transmitter for comfort ventilation systems. It provides an active current or voltage
signal proportional to the measurement air pressure. DTM consists of semiconductor elements. There
is no air throughput and the unit is thus protected against dust in the ventilation system. The pressure
element is temperature compensated to provide accurate pressure measurement throughout the
specified temperature range. The required measuring range of the pressure transmitter is set with DIP
switches. The output signal can be changed from voltage V to current mA by setting a jumper. A DIP
switch allows two different damping times to be selected so that pressure fluctuations within the
ventilation system are attenuated in the transmitter output signal. A green LED indicates that supply
voltage has been connected correctly. If the actual pressure is outside the selected measuring range,
the green LED flashes.
Technical Data
Type
DTM04
DTM05
Article-No.
83004
83005
Full scale pressure range
0-5000 Pa
0-2500 Pa
Medium
Air and non-aggressive gases
Air and non-aggressive gases
Supply voltage
16-28V DC, 24V AC +15%
16-28V DC, 24V AC +15%
Signal voltage
green LED
green LED
Own consuption
1VA
1VA
Ambient temperature
-20…+40°C
-20…+40°C
Output signal
1 channel
1 channel
Output signal V
0-10V DC, 2-10V DC
0-10V DC, 2-10V DC
Output signal mA
0-20mA, 4-20mA
0-20mA, 4-20mA
Accuracy output signal
1,5% x measured value +0,3%
x set measuring range +2,5 Pa
1,5% x measured value +0,3%
x set measuring range +2,5 Pa
Damening selectable
0,4s or 10s
0,4s or 10s
Dampening
selectable by DIP-switches
selectable by DIP-switches
Possible settings
0-5000 Pa
0-2500 Pa
Max. pressure
20k Pa
20k Pa
Enclosure
IP54
IP54
Cable dimensions
4 x max. 1,5mm²
4 x max. 1,5mm²
Dimensions
L=75mm, B=36mm, H=91mm
L=75mm, B=36mm, H=91mm
Cable dimensions
4 x max 1,5mm²
4 x max 1,5mm²
Pressure connector
2 x 6,2 mm diameter
2 x 6,2 mm diameter