Pressure differential transmitter DDS-M984… DDS

Pressure differential transmitter DDS-M984… DDS

Pressure differential
transmitterDDS-M984…
DDS-MR984…
Function
Pressure differential transmitters of type series DDS 984 are
used to measure differential, positive, and negative pressure in
gaseous, non-aggressive media. They have 2 sensor pressure
ranges and 2 output signals that can be selected alternatively
by swapping a jumper.
The pressure transducer converts the mechanical pressure
reading into an electrical sensor signal. The piezo-resistive
pressure transducer integrated into the DDS 984 pressure
differential transmitter is configured so that the pressure to be
read is applied to a thin mono-silicon membrane. This deflects
the membrane. The membrane is equipped with resistors based
on semi-conductor technology. These detect the mechanical
deflection and generate an electrical output signal. The arrangement of the resistors at the same time results in temperature
response compensation. High-gain process amplifiers convert
the signal from the pressure transducer into the output signal.
Within the specified error limits, the electrical output signal
changes proportionally to the applied pressure.
Possible applications include:
• Building automation, air-conditioning and cleanroom
technology
• Valve and damper control
• Filter, ventilator, and blower monitors
• Airflow controls
• Metric cable glands
• Arbitrary installation orientation
Technical Data
Compressed medium:
Air and non-aggressive media
Power supply:
•3-wire-design 18 – 30 V AC / DC
•2-wire-design 18 – 30 V DC
Output signal:
•3-wire-design 0 – 10 V and 4 – 20 mA
•2-wire-design 4 – 20 mA
Maximum current draw:
•Without display
160 mA
•With LED display
210 mA
Load (at 4 – 20 mA):
20 – 500 Ω
Linearity and hysteresis
error:
≤ ±1 % of sensor reading
Operating temperature: 0 – 50 °C
Storage temperature:
-10 – +70 °C
Long-term stability, type:≤ ±0,5 % – ±2,5 % of sensor reading/
year, depending on pressure range
Repeatability accuracy: ≤ ±0,2 % of sensor reading
Orientation dependency: ≤ ± 0,02 % of sensor reading/g
Humidity:
0 – 95 % RH, non-condensing
Switching output (npn): max. 30 V DC/100 mA 1)
Output signal toggle:
Linear/square root extraction
Zero setting adjustment: Manual
Response time settings:Short, 100 ms
long, 1 s (default setting)
Process ports:
6 mm hose flanges
Electrical connection:Screw terminals for wires
and cores up to 1.5 mm²
Mounting:Screw mounted with sheetmetal
screws
Display, optional:
Red LED display, 3.5-digit 1)
Housing material:Switch housing with process port P2,
ABS, light-gray;
mounting bracket with process port
P1, POM, white
Housing dimensions:
Approx. Ø 85 mm, H 58 mm
Weight: Approx. 150 g
Protection type
iaw. EN605209:
IP 54 with protective cover
Cable grommet for
protective cover:
M 16 x 1,5 Polyamide threads
Standards / conformity:EN 60770, EN 61326
2002/95/EWG (RoHS)
Sensor method:Piezo-resistive pressure sensor for
airflows
1)
only on 3-wire design
Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 | 1 | 6
Pressure differential transmitter DDS-M984… DDS-MR984…
Type name
Series
M16 cable gland
Sensor range: see table
Unit of measure: Pa
Output signal
K 0 – 10 V or 4 – 20mA, lin/square root extraction, with switching output
2 2-wire 4 – 20 mA, lin/square root extraction, without switching output, without display
Display
0 without display
1 with LED display
DDS-MR984.5._.3.K.1
Pressure ranges
Type
Sensor range 1
Sensor range 2
Positive pressure
safety
Burst
pressure
Temperature error
DDS-MR984.5.X.3.K.1 -50 – 50 Pa
-
20 kPa
40 kPa
≤ ± 5% of sensor reading
DDS-MR984.5.W.3.K.1 -100 – 100 Pa
-
20 kPa
40 kPa
≤ ± 5% of sensor reading
DDS-MR984.5.2.3.K.1
0 – 100 Pa
0 – 250 Pa
20 kPa
40 kPa
≤ ± 5% of sensor reading
DDS-MR984.5.3.3.K.1
0 – 250 Pa
0 – 500 Pa
20 kPa
40 kPa
≤ ± 5% of sensor reading
DDS-MR984.5.4.3.K.1
0 – 500 Pa
0 – 1,000 Pa
20 kPa
40 kPa
≤ ± 3.5% of sensor reading
DDS-MR984.5.5.3.K.1
0 – 1 kPa
0 – 2.5 kPa
40 kPa
70 kPa
≤ ± 1% of sensor reading
DDS-MR984.5.7.3.K.1
0 –5 kPa
0 – 10 kPa
60 kPa
120 kPa
≤ ± 1% of sensor reading
DDS-MR984.5.9.3.K.1
0 – 25 kPa
0 – 50 kPa
300 kPa
500 kPa
≤ ± 1% of sensor reading
DDS-MR984.5.B.3.K.1
0 – 100 kPa
0 – 250 kPa
1.2 MPa
2 MPa
≤ ± 1% of sensor reading
0 – 10 kPa
60 kPa
120 kPa
≤ ± 1 % of sensor reading
DDS-MR984.5._.3.K.0 Without display, technical specs as above
DDS-MR984.5._.3.2.0
2-wire 4 – 20 mA, no switching output, no display
2 | 6 | Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 Pressure differential transmitter DDS-M984… DDS-MR984…
Installation
Klemmenbelegung
Terminal assignments
3-Leiter-Ausführung
3-wire design
All work (such as installation, electrical connection, startup,
operation, and maintenance) must only be performed by sufficiently qualified tradesmen. The respectively applicable local
rules and regulations (e.g. national building codes, electrical/
VDE regulations, etc.) must be observed. Installers and operating entities are required to sufficiently familiarize themselves
before startup. Read the product description before operating
the equipment. Verify that the product can be used for the
relevant application without restrictions. We are not liable for
printing errors and changes after printing. Appropriate use
implies compliance with operating and installation instructions. We are not liable for losses due to inappropriate use.
Unauthorized or inappropriate manipulations or modifications
of the device render the operating permit, the product warranty
and warranty claims null and void.
npn
4
Load
3
0…10 V
4...20 mA
2
Load
24 V AC/DC 1
4
3
2
1
SA
GO
Y
G
switching output, npn
ground or GND
output signal 0 … 10 V/4 ... 20 mA
power supply 24 V AC/DC
2-wire design
Startup
The 984 pressure differential transmitter can be operated with
24 V DC or AC.
Hoses must not be kinked or damaged while being connected.
Leaking hoses or hose connections cause malfunctions on the
device or will cause incorrect sensor readings.
Inside hose diameter: 5.5 mm for ideal clamping. Hose clamps
should be used from 25 kPa.
P1 = positive pressure measurements
P2 = negative pressure measurements
P1 & P2 = pressure differential measurements
The pressure on P1 must always be higher than on P2 to obtain
a correct 0 – 10 V signal.
The output signal is connected to terminals „Out 0 – 10 V“. Note
correct polarity. The load must be selected to avoid exceeding
10 mA output current.
As a final step, the power supply is connected to the terminals
labeled „In 24 V AC/DC“.
Installation orientation
The orientation error is eliminated with the self-compensating
piezo sensor cell. The installation orientation is arbitrary.
Simple zero point setting
The output signal is calibrated to zero by pressing the M button
while the transmitter is not under pressure.
Switching output
(not for 2-wire design)
In addition to the analog output signal, the pressure differential
transmitter includes an adjustable transistor switching output
with a maximum switching rating of 35 V DC/100 mA.
Pressure display (optional)
In addition to the output signal, the pressure reading is displayed in
Pascal with a red LED.
Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 | 3 | 6
Pressure differential transmitter DDS-M984… DDS-MR984…
Configuration
M = Mode
S = Set
Jumper
function
Inserted
Open
Sensor range
Low
High
Response time
Slow
Fast
Operating mode
Linear
Square root
extraction
Output signal
0 – 10 V
4 – 20 mA
LED
Pressure range toggle
Volume flow measurement
2 pressure ranges are available for selection (see table) for an
optimum adjustment of the pressure range. The lower, sensitive
area is selected with an inserted jumper (default state). When
the jumper is pulled, the higher, less sensitive range is active.
A jumper is used to toggle between the measurement metric
„Pressure“ (linear) and „Air volume“ (square root extraction). The
air volume is proportional to the root of the pressure differential between the two hose connections (pressure differential
method).
Adjustable response time
The response time can be adjusted in 2 levels to suppress
brief pressure surges and turbulence, e.g. in the air duct. The
response time is long when the jumper is inserted (default
state). Remove the jumper when the fast response time is
desired.
V
out
10
8
6
4
Output signal toggle
The 3-wire output signal version can be toggled. The default
output signal is 0 – 10 V; it can be switched to 4 – 20 mA by
removing the jumper. The 2-wire version is only available with
the 4 – 20 mA output signal..
2
0
0
20
40
60
Sensor range
80
100
%P
Adjusting the switching output
(3-wire without display)
This functions is used to set the switching output to „interconnected“ for a pressure defined by you. Apply the pressure or
the pressure differential at which the switching output should
interconnect. Then press button „S“ for 5 sec until the LED blinks
rapidly (= switching point saved). The LED lights up as soon as
the defined pressure is reached or exceeded.
4 | 6 | Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 Pressure differential transmitter DDS-M984… DDS-MR984…
Programming (versions with display)
Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 | 5 | 6
70.5
65.5
55
50
ø
10
60
Masszeichnungen
Masszeichnungen
Masszeichnungen Pressure differential transmitter DDS-M984… DDS-MR984…
ø10
18
11
7.7
ø 4.5
40
Kanalans
Climaset®
Dimensioned Befestigungswinkel
drawing
6401
Befestigungswinkel 6402
984 mit Kabelverschraubung
M16x1,5
984 mit Kabelverschraubung
M16x1,5
984 mit Kabelverschraubungø 4M16x1,5
DDS...984...
Mounting bracket
6481
Befestigungswinkel
6481
ø5
7
ø4
ø6
10
46
71
19.5
10
7.7
11
ø 16
65.5
21.5
ø5
10
40
60
ø10
18
2
90.5
ø5
40
60
65
50
65
50
ø6
70.5
65.5
ø6
55
50
65
50
60
ø6
0
ø5
0
ø 4.5
40
Befestigun
Climaset® 6550/6556
7.5
18
7.5
18
Kanalans
Climaset®
19
Befestigungswinkel 6482
21.8
7.5
18
Befestigungswinkel
Kanalanschluss für 6481
21.8
gswinkel 6402
57.5
21.8
57.5
57.5
40
Mounting bracket 6482
59
40
ø6
59
8
ø4 .5
.5
2
65.5
100
21.5
ø5
46
71
10
19.5
10
ø 16
ø5
40
60
80
40
60
90.5
ø5
ø6
ø4
8
ø4 .5
.5
0
8
ø4 .5
.5
7
18.5
59
2
40
60
10
ø 6.5
60∞
19
Kanalanschluss für
Duct
connection­ für Kanalanschluss
Duct connection­ für
Kanalanschluss
Befestigungswinkel
6401
Befestigungswinkel
6402 ®
Befestigungswinkel
6401
Befestigungswinkel
6402
Befestigungswinkel
6401
Befestigungswinkel
640
®
®
nipples
6552
nipples 6551
Mounting bracket 6401
Mounting bracket 6402 Climaset 6550/6556
Climaset
6550/6556Climaset
6555/6557
gswinkel 6482
2
ø4
øø 46
40
40
ø4
7.7
60∞
40
ø4
100
ø5
21.5
10
10
21.5
ø5
40
60
10
40
60
40
Kanalanschluss für
®
Befestigungswinkel 6481
Climaset
Befestigungswinkel
6482
Befestigungswinkel
6481
Befestigungswinkel
6482 6555/6557
Befestigungswinkel
6481
Befestigungswinkel
648
2
7
7
ø5
ø5
ø5
ø 3.4
18.5
7
18.5
Oppermann Regelgeräte
GmbH | Im Spitzhau 1 | 70771 Leinfelden-Echterdingen, Germany
ø 16 40
80
2
ø6
ø 3.4
ø6
10
11
40
Kanalanschluss für
Climaset® 6555/6557
6482
40
60
ø 16
ø5
ø10
ø 4.5
7.7
ø10
11
18
11
Rubber feedthroughs 6553
ø 4.5
ø 6.5
18
7.7
10
60
18
ø5
ø10
ø 4.5
10
60
60
21.5
ø 25
ø 16
60∞
80
90.5
65.5
Specifications subject to change.
5
1
ø 6.5
19.5
0
65.5
6 | 6 | Sensor ventilation air conditioning | Data sheet No. 13251 | Version 09-2014 2
.5
602
90.5
90.5
40
ø 25 60 | Fax +49 711 7280527 | info@oppermann-regelgeraete.de | www.oppermann-regelgeraete.de
40
Phone +49 711 72723560 2
60
65.5
40
60
0
ø5
70.5
65.5
70.5
65.5
ø4
55
70.5
50
65.5
ø 16
80
100
55
50
0
ø5
0
ø 5 ø 50
0
ø6
ø4
ø5
55
50
0
18.5
ø6
ø5
ø 3.4
6482
ø 16
ø 25