Emerson Process Management DVS205 User Manual
2.5:DVS205
Specification Sheet January 2009
DVS205 Dual-Variable Sensor
The DVS205 Dual-Variable Sensor (DVS) 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 DVS 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 DVS.
Transducer and Electronics
The DVS contains a transducer and an electronics
circuit. The transducer uses capacitance-cell
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 DVS to communicate
with a FloBoss using a Serial Peripheral Interface
(SPI).
Accuracy
Two versions of the DVS transmitter are available:
DVS205P with reference accuracy of 0.075% of
the full span.
DVS205E with reference accuracy of 0.10% of
the full span.
Mounting
The DVS 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 DVS to mount on an integral
orifice assembly or manifold valve.
DVS205 Dual-Variable Sensor
Coupling
Sensor Body
Coplanar
Flange
D301569X012
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Website: www.EmersonProcess.com/Remote
2.5:DVS205
Specification Sheet Page 2
DVS205 Dual-Variable Sensor Specifications
DIFFERENTIAL PRESSURE INPUT
Range
1
: (100:1 rangeability allowed)
0 to 62.2 kPa (0 to 250" H
2
0 to 248.8 kPa (0 to 1000" H
O).
O).
2
Reference Accuracy:
±0.10% of span for turndowns from 1:1 to 10:1 of
URL (DVS205E).
±0.075% of span for turndowns from 1:1 to 10:1 of
URL (DVS205P).
For spans less than 10:1 turndown:
Accuracy = ±[0.025 + 0.005(URL/Span)]% of
span.
Stability: ±0.125% of URL for five years for ±50°F
(28°C) ambient temperature changes, and up to
1000 psi (68,9 bar) line pressure.
Ambient Temperature Effect per 50°F (28°C):
±(0.025% URL + 0.125% of span) spans from 1:1
to 30:1.
±(0.035% URL + 0.175% of span) spans from
30:1 to 100:1.
Static Pressure Effects:
Zero error = ±0.05% of URL per 1000 psi (68,9
bar).
Span error = ±0.20% of DP Reading per 1000 psi
(68,9 bar).
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).
STATIC PRESSURE INPUT
Range: Either Absolute or Gauge (100:1
rangeability allowed):
0 to 5516 kPa (0 to 800 psia/psig).
0 to 25,000 kPa (0 to 3626 psia/psig).
Reference Accuracy:
±0.10% of span for turndowns from 1:1 to 10:1 of
URL (DVS205E).
±0.075% of span for turndowns from 1:1 to 10:1 of
URL (DVS205P).
For spans less than 10:1 turndown:
Accuracy = ±[0.03 + 0.0075(URL/Span)]% of
span.
STATIC PRESSURE INPUT (continued)
Stability: ±0.125% of URL for five years for ±50°F
(28°C) ambient temperature changes.
Ambient Temperature Effect per 50°F (28°C):
±(0.05% URL + 0.125% of span) spans from 1:1
to 30:1.
±(0.06% URL + 0.175% of span) spans from 30:1
to 100:1.
Over-Pressure Limit: Same as URL.
POWER
Input at 0 to 75°C (32 to 167°F): 8 to 30 V dc, 10
mW average.
Input at –40 to 0°C (–40 to 32°F): 8.5 to 30 V dc,
10 mW average.
OUTPUT
Serial Peripheral Interface (SPI).
WEIGHT
3.0 kg (6.7 lb).
ENVIRONMENTAL
Same as the FloBoss unit in which it is installed.
Process Seals per ANSI/ISA 12.27.01
Meets requirements for a Single Seal device as
defined by ANSI/ISA 12.27.01. Installation must
adhere to the following process temperature limits.
Process Temperature (at transmitter isolator flange):
Standard Silicone Fill Sensor: -40 to 100°C (-40 to
212°F).
Inert Fill Sensor: -18 to 85°C (0 to 185°F).
Note: Process temperatures above 85°C (185°F)
require you to lower the product’s maximum ambient
temperature rating by a 1.5:1 ratio. To determine the
adjusted maximum temperature rating, perform the
following calculation:
Adjusted max T
Process T
amb
= Product Max T
amb
- 85°C (185°F)) * 1.5].
- [(Actual
amb
Example:
Adjusted Max T
= 75°C – [(95°C – 85°C) * 1.5]
amb
= 60°C.
DIMENSIONS
147 mm H by 163 mm W by 84 mm D (5.8 in. H by
6.4 in. W by 3.3 in. D).
VIBRATION EFFECT
Sensor outputs will not shift more than +0.1% of
URL per g from 5 to 2000 Hz in any axis when
tested per IEC 770, Section 6.2.14.
1. Consult factory for special ranges and materials which may be availab le. For example: 0 to 6.22 kPa (0 to 25" H2O) at ±0.10% reference accuracy.
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