Pressure transducers DMU 14 DG/FG Ex

Pressure transducers DMU 14 DG/FG Ex

Benefits
■  Version DMU 14 FG Ex with Ex approval for zone 0
■  Ideal for process engineering
■  High accuracy of ± 0.1 %
■  Either die cast housing (DG) or field housing (FG)
■  Turn down 1:10
■  Local display

Application
The intelligent pressure transducer DMU 14 DG EX with die cast aluminium housing provides very high accuracy and a turn down function for measuring range selection and is an ideal solution for process engineering applications. The version DMU 14 FG EX with a stainless steel field housing is perfectly suitable for applications in the pharmaceutical and food industries. The devices come with HART ®  communication.

Technical specifications
Measuring accuracy
Deviation from the characteristic curve according to IEC 60770 –
limit point calibration (non-linearity, hysteresis, repeatability)
≤ ± 0.1 % FSO
≤ ± 0.2 % FSO at turn down > 1:5
Long-term stability
≤ ± 0.1 % FSO/Jahr at reference conditions
Display
LC display,
5-digit 7-segment main display,
Character height 8 mm,
Range ± 9,999,
8-digit 14-segment additional display,
Character height 5 mm,
52-segment bar chart,
Accuracy 0.1 % ± 1 digit
Measuring range
See ordering table
Overpressure safety
≤ 0/20 bar: At least 4 x FS
≤ 0/400 bar: At least 2 x FS
> 400 bar: 1,000 bar
Operating temperature range
Medium: -40/+125 °C
Medium: short-term (60 min) up to 150 °C
Ambient: -20/+70 °C
Ambient: -20/+60 °C in Ex zone 0 at p atm  0.8 to 1.1 bar
Storage: -30/+80 °C
Temperature error band
≤ ± 0.2 % FSO x Turn-Down In compensated range -20/+85 °C
Dynamic characteristics
Response time:          100 ms (without consideration of electronic
damping)
Process connection
G½B (EN 837-1/7.3)
Material
Housing
DMU 14 DG Ex:         Aluminium die cast, powder-coated
DMU 14 FG Ex:          Stainless steel 316 L
Pressure connection: Stainless steel 316 L
Diaphragm: Stainless steel 316 L
Seal: FKM (Viton)

Pressure transmission liquid
Silicone oil
Adjustable parameters
Electronic damping:    0/100 s
Offset:: 0/90 % FSO
Turn down of span:     1:10
Supply voltage
DC 12 – 28 V
Output signal
2-wire, 4–20 mA
With Ex version/HART ®  communication
Load
R Max  = [(UB – UB-
Min )/0.02 A] Ω
HART ®  communicati-
on:
R min  = 250 Ω
Current input
< 25 mA
Electrical protection
Short circuit proof and protected against reverse polarity
Electrical connection
Cable gland M20 x 1.5
Degree of protection
IP 67 (EN 60529)
CE conformity
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
Pressure Equipment Directive 2014/68/EU (module A)
ATEX Directive 2014/34/EU
Ex approval
IBExU 15 ATEX 1059
X
DMU 14 DG Ex:         Ex II 2G Ex ia IIC T4 Gb and Ex II 1D Ex ia
IIIC T85°C Da
DMU 14 FG Ex:          Ex II 1G Ex ia IIC T4 Ga and Ex II 1D Ex ia
IIIC T85°C Da

Options
■  Other process connections
■  High temperature version up to 300 °C (only for connection G½ DIN 3852 with protruding diaphragm)