Emerson DVS205 User Manual
DVS205
Technical Specifications
April 2011
DVS205 Dual-Variable Sensor
The DVS205 Dual-Variable Sensor (DVS205)
provides static pressure and differential pressure
inputs to a FloBoss™ 103, FloBoss 107E, or FloBoss
500-Series Flow Manager. The DVS205
communicates via a serial format with the FloBoss.
Variables
Functionally, the DVS205 is a digital transmitter that
measures two flow-related variables simultaneously:
differential pressure and static pressure. These
variables are continuously available to the FloBoss
unit that polls the DVS205.
Transducer and Electronics
The DVS205 contains a transducer and an
electronics circuit. The transducer uses capacitancecell technology to sense differential pressure and
piezoresistive technology to sense the static
(absolute or gauge) pressure.
The transducer electronics convert the pressure
variables directly into a digital format, allowing
accurate correction and compensation. A
microprocessor linearizes and corrects the raw
pressure signals (from the sensor) using
characterization data stored in non-volatile memory.
The electronics also allow the DVS205 to
communicate with a FloBoss using a Serial
Peripheral Interface (SPI).
Accuracy
Two versions of the DVS205 are available:
205P with reference accuracy of 0.075% of the
full span.
205E with reference accuracy of 0.10% of the
full span.
Mounting
The DVS205 is factory installed on a FloBoss™ 103,
FloBoss 107E, or FloBoss 500-Series Flow Manager
to comply with agency requirements. Attached to the
bottom of the sensor body is a Coplanar™ flange.
This flange allows the DVS205 to mount on an
integral orifice assembly or manifold valve.
Remote Automation Solutions
Website: www.EmersonProcess.com/Remote
Coupling
Sensor Body
Coplanar
Flange
W8826-A
DVS205 Dual-Variable Sensor
D301569X012
DVS205
Technical Specifications
Page 2
DVS205 Multi-Variable Sensor
Differential Pressure Input
Range1 0 to 62.2 kPa (0 to 250" H2O)
0 to 248.8 kPa (0 to 1000" H2O)
Reference Accuracy 205E
Turndowns from 1:1
Stability
Ambient Temperature Effect
per 50°F (28°C)
Spans from 30:1
Static Pressure Effects Zero error
Span error
Over-Pressure Limit 3,626 psi (250 bar) applied on either or both sides without damage to the sensor
Burst Pressure Limit 10,065 psi (694 bar)
205P
±0.125% of URL for five years, with up to ±50°F (28°C) ambient temperature changes
and up to 1000 psi (68,9 bar) line pressure
Spans from 1:1 to
30:1
to 100:1
Turndowns from 1:1
to 10:1 of URL
Turndowns from 10:1
to 100:1 of URL
to 10:1 of URL
Turndowns from 10:1
to 100:1 of URL
±(0.025% URL + 0.125% of span)
±(0.035% URL + 0.175% of span)
±0.05% of URL per 1000 psi (68,9 bar)
±0.20% of DP Reading per 1000 psi (68,9 bar)
±0.10% of span
Not allowed
±0.075% of span
±[0.025 + 0.005(URL/Span)]% of span
Static Pressure Input
Range Either Absolute or Gauge:
0 to 5516 kPa (0 to 800 psia/psig)
0 to 25,000 kPa (0 to 3626 psia/psig)
Reference Accuracy 205E
Turndowns from 1:1
Stability
Ambient Temperature Effect
per 50°F (28°C)
Spans from 30:1
Over-Pressure Limit Same as URL
205P
±0.125% of URL for five years, with up to ±50°F (28°C) ambient temperature changes
Spans from 1:1 to
30:1
to 100:1
Turndowns from 1:1
to 10:1 of URL
Turndowns from 10:1
to 100:1 of URL
to 10:1 of URL
Turndowns from 10:1
to 100:1 of URL
±(0.05% URL + 0.125% of span)
±(0.06% URL + 0.175% of span)
±0.10% of span
Not allowed
±0.075% of span
±[0.03 + 0.0075(URL/Span)]% of span
1. Consult factory for special ranges and materials which may be availa ble. For example, 0 to 6.22 kPa (0 to 25" H2O) at
±0.10% reference accuracy.
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