2.2 Compensation of the atmospheric pressure ................... 18
Contents
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
(e.g. the VDE regulations in Germany) as well
as all prevailing safety regulations and accident prevention rules.
For safety and warranty reasons, any internal
work on the instruments, apart from that involved in normal installation and electrical connection, must be carried out only by qualified
VEGA personnel.
2Pressure transmitter D81 METEC
Note Ex area
Please note the attached safety instructions
containing important information on installation
and operation in Ex areas.
These safety instructions are part of the operating instructions and come with the Ex approved instruments.
7 In strum ent mo dific ation ........................................................ 4 1
7.1 Retrofitting the adjustment insert ...................................... 41
Pressure transmitter D81 METEC
®
3
1 Product description
Product description
1.1 Function and configuration
Pressure transmitter D81 METEC® is a powerful instrument for hydrostatic level measurement. A METEC® measuring cell is used
as the measuring device. This cell consists of
a ceramic-capacitive sensor and a specially
adapted isolating diaphragm.
Pressure transmitter D81 METEC
Measuring cell: METEC
®
Diaphragm: flush, Hastelloy C276/1.4435
Series: flange version
Standard application: all types of level measurements, best suited for food processing
and pharmaceutical industries.
The hydrostatic pressure of the product
causes a diaphragm movement in the ceramic-capacitive CERTEC® measuring cell via
a temperature-compensated isolating system
consisting of stainless steel body, Hastelloy
diaphragm and medical white oil. This capacitance change is detected by an ASIC
(Application Specific Integrated Circuit) and
converted into a pressure-proportional signal
by the integrated electronics module with
microcontroller. Precise, high-resolution digital processing of measurement data ensures
excellent technical data.
®
To improve reliability, the functionality of important electronic components is continuously checked, and internal parameters such
as sensor value, temperature and operating
voltage are closely monitored.
Output signal
The output signal is transferred as a digital or
analogue signal from the pressure transmitter
to the signal conditioning instrument:
• analogue output signal
- unstandardised (in conjunction with
VEGA signal conditioning instrument)
- 4 … 20 mA standardised
• digital output signal (VBUS) for connection
of a digital VEGA signal conditioning instrument (VEGAMET 514V, 515V or VEGALOG
571)
®
CERTEC
4Pressure transmitter D81 METEC
®
Product description
1.2 Electronics version without adjustment
Electronics version A:
Pressure transmitter for connection to VEGA signal conditioning instruments
e.g. IP 66
VEGABOX 01
VEGAMET
VEGALOG
Zum Anschluss an
For connection to
Druckmessumformer mit
pressure transmitters with
analogem Ausgangssignal
analog output
12310
TRANSMITTER
VEGABOX 01
11 12
-
+
-
+
VEGAMET
VEGALOG
e.g. IP 67
Electronics version B:
Pressure transmitter for connection to VEGA signal conditioning instruments (digital
transmission VBUS)
Nominal measuring rangeGauge pr. resistanceLow pr. resistance
Gauge pressure
0…0,1 bar / 0…10 kPa15 bar / 1 500 kPa-1,0 bar / -100 kPa
0…0,2 bar / 0…20 kPa20 bar / 2 000 kPa-1,0 bar / -100 kPa
0…0,4 bar / 0…40 kPa30 bar / 3 000 kPa-1,0 bar / -100 kPa
0…1,0 bar / 0…100 kPa35 bar / 3 500 kPa-1,0 bar / -100 kPa
0…2,5 bar / 0…250 kPa50 bar / 5 000 kPa-1,0 bar / -100 kPa
0…5,0 bar / 0…500 kPa50 bar / 5 000 kPa-1,0 bar / -100 kPa
0…10,0 bar / 0…1 000 kPa50 bar / 5 000 kPa-1,0 bar / -100 kPa
-0,5…+0,5 bar / -50…+50 kPa35 bar / 3 500 kPa-1,0 bar / -100 kPa
-1,0…0,0 bar / -100…0 kPa35 bar / 3 500 kPa-1,0 bar / -100 kPa
-1,0…+1,5 bar / -100…+150 kPa50 bar /5 000 kPa-1,0 bar / -100 kPa
-1,0…+4,0 bar / -100…+400 kPa50 bar / 5 000 kPa-1,0 bar / -100 kPa
-1,0…+10,0 bar / -100…+1 000 k Pa50 bar / 5 000 kPa-1,0 bar / -100 kPa
Absolute pressure
0…1,0 bar / 0…100 kPa35 bar / 3 500 kPa
0…2,5 bar / 0…250 kPa50 bar / 5 000 kPa
0…5,0 bar / 0 …500 kPa50 bar / 5 000 kPa
0…10,0 bar / 0…1 000 kPa50 bar / 5 000 kPa
Mechanical data
Materials, wetted parts
Process connectionstainless steel 1.4435
DiaphragmHastelloy C276
Materials, non-wetted parts
HousingAlu (seawater resistant) Pe-powder coated,
External connection housinghigh resistance plastic PBT (Polyester)
Ground terminalstainless steel 1.4305
Window of the display modulesafety glass
Weights
Basic weight without housingapprox. 1.6 kg
External housingapprox. 400 g
Adjustment and indicating elements
Pressure transmitter
- terminal insertwithout adjustment elements
- adjustment insert2 keys, 1 rotary switch
Pressure transmitter D81 METEC
®
stainless steel 1.4571
9
Product description
Electrical data
Adjustment ranges
Zeroadjustable from -20 … +95 % of nominal range
Spanadjustable from 3.3 … 120 % of nominal range
Supply and signal circuit (analogue transmission, 4 … 20 mA),
electronics version A, C, I and K
Supply voltage12 … 36 V DC
permissible residual rippleU
- adjustment insert4 … 20 mA (adjustable)
Current limitationapprox. 22 mA
Fault signal22 mA (3.6 mA)
Integration time0 … 10 s
Rise time70 ms (ti = 0 sec; 0 … 63 %)
Max. permissible loadsee load diagram:
≤ 1 V
SS
≤ 10 mV
SS
- 4 … 20 mA
Load in Ω
900
600
300
Supply voltage
12
18243036
10Pressure transmitter D81 METEC
in V
®
Product description
Supply and signal circuit (analogue transmission, 4 … 20 mA),
additional data for electronics version L
Supply voltage for pressure transmitters
in conjunction with VEGADIS 12
- without display12 … 36 V DC
- with display17 … 36 V DC
Max. input current150 mA
Current signal range3.5 … 22 mA
Max. permissible loadsee load diagram:
Load diagram with display
Load in Ω
700
500
300
100
18
243036
Supply voltage
in V
Supply and signal circuit on VEGA signal conditioning instruments (digital signal
transmission VBUS), additional data for electronics version B
Supply voltage25 … 36 V DC, from VEGAMET (VBUS) or
from VEGALOG 571 with EV input card
Data transmissiondigital (VBUS)
Connection cable2-wire screened
Cable lengthmax. 1000 m
Integrated overvoltage protection (option)
Nominal response DC voltage
- protective diode40 V
- gas separator650 V
Nominal leakage current
- gas separator20 kA
Connection cables
Cable entry
- housing2 x M20x1.5 (for cable ø 5…9mm or 9…12mm)
- external connection housing2 x M20x1.5 (for cable ø 5…9mm or 9…12mm)
Screw terminals
- sensorfor wire cross-sections up to 2.5 mm
- external connection housingfor wire cross-sections up to 2.5 mm
2
2
Pressure transmitter D81 METEC
®
11
Product description
Protective measures
1)
ProtectionIP 66, IP 67, IP 68
VEGABOX 01IP 66 and IP 67
Protection classIII
Overvoltage categoryIII
Accuracy (similar to DIN 16 086, DIN V 19 259-1 and IEC 770)
Deviation
Reference conditions (acc. to IEC 770)
- temperature15°C … 30°C
- moisture45 % … 75 %
- air pressure86 kPa … 106 kPa
Determination of characteristicslimit point adjustment acc. to DIN 16 086
Characteristicslinear
Deviation in characteristicsincl. hysteresis and repeatability
- Turn Down 1 : 1< 0.25 % with accuracy class 0.25
- Turn Down up to 1 : 5typ. < 0.3 % with accuracy class 0.25
- Turn Down up to 1 : 10typ. < 0.4 % with accuracy class 0.25
Influence of the ambient temperature
Average temperature coefficient
of the zero signal
2)
- Turn Down 1 : 1< 0.15 %/10 K with accuracy class 0.25
- Turn Down up to 1 : 5typ. < 0.225 %/10 K with accuracy class 0.25
- Turn Down up to 1 : 10typ. < 0.3 %/10 K with accuracy class 0.25
< 0.1 % with accuracy class 0.1
typ. < 0.1 % with accuracy class 0.1
typ. < 0.2 % with accuracy class 0.1
< 0.05 %/10 K with accuracy class 0.1
typ. < 0.075 %/10 K with accuracy class 0.1
typ. < 0.1 %/10 K with accuracy class 0.1
Long-term stability
Long-term stability of the zero signal
3)
< 0.1 % per 2 years
Other actuating variables
Calibration positionupright, diaphragm points downwards
Influence of the installation position< 5 mbar
Vibration resistancemechanical vibrations with 4 g and
5 … 100 Hz, tested acc. to the regulations of
German Lloyd GL characteristics 2
1)
Maintaining the housing protection IP 66 or IP 67 requires the use of a seal that correctly fits the cable in
the cable entry. If the supplied seal does not fit, a suitable seal must be provided by the customer.
2)
In compensated temperature range of 0°C … +80°C, reference temperature 20°C
3)
Acc. to IEC 770, point 6.3.2 relating to the nominal range
12Pressure transmitter D81 METEC
®
Product description
Operating conditions
Ambient conditions
Ambient temperature-40°C … +85°C
- with indicating module-10°C … +60°C
Storage and transport temperature-50°C … +100°C
Product temperature
- METEC® - Standard-12°C … +150°C (1 h up to 160°C)
- METEC - HT-12°C … + 200°C
1.6 Approvals and certificates
Approvals
- Ex Zone 2
- CENELEC EEx ia IIC
- ATEX II 1G EEx ia IIC
If the use of approved instruments is required for certain applications, the appropriate
official documents (test reports, test certificates and conformity certificates) must be observed. These are supplied with the respective instrument.
CE conformity
D81 METEC® pressure transmitters meet the protective regulations of EMC (89/336/EWG)
and NSR (73/23/EWG). Conformity has been judged acc. to the following standards:
EMCEmissionEN 50 081 - 1: 1992
NSREN 61 010: 1993
SusceptibilityEN 50 082 - 2: 1995
NAMUR regulations
Full compliance with the NAMUR regulations NE21 and NE 43.
Pressure transmitter D81 METEC
®
13
1.7 Dimensions
Housing
ø 76
67
Product description
ø 75
ø 41,6
91
46
63
93
ø 41,6
ø 41,6
46
90
14Pressure transmitter D81 METEC
®
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