Emerson DVS205 Manuale utente

DVS205

April 2011

Technical Specifications

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.

Remote Automation Solutions

Website: www.EmersonProcess.com/Remote

D301569X012

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 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 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.

Coupling

Sensor Body

Coplanar

Flange

W8826-A

DVS205 Dual-Variable Sensor

DVS205

Page 2

Technical Specifications

DVS205 Multi-Variable Sensor

Differential Pressure Input

Range10 to 62.2 kPa (0 to 250" H2O)

0 to 248.8 kPa (0 to 1000" H2O)

Turndowns from 1:1

to 10:1 of URL ±0.10% of span

Reference Accuracy 205E

Turndowns from 10:1

to 100:1 of URL Not allowed

Turndowns from 1:1

to 10:1 of URL ±0.075% of span

205P

Turndowns from 10:1

to 100:1 of URL ±[0.025 + 0.005(URL/Span)]% of span

Stability ±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

Ambient Temperature Effect

per 50°F (28°C) Spans from 1:1 to

30:1 ±(0.025% URL + 0.125% of span)

Spans from 30:1

to 100:1 ±(0.035% URL + 0.175% of span)

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:

0 to 5516 kPa (0 to 800 psia/psig)

0 to 25,000 kPa (0 to 3626 psia/psig)

Turndowns from 1:1

to 10:1 of URL ±0.10% of span

Reference Accuracy 205E

Turndowns from 10:1

to 100:1 of URL Not allowed

Turndowns from 1:1

to 10:1 of URL ±0.075% of span

205P

Turndowns from 10:1

to 100:1 of URL ±[0.03 + 0.0075(URL/Span)]% of span

Stability ±0.125% of URL for five years, with up to ±50°F (28°C) ambient temperature changes

Ambient Temperature Effect

per 50°F (28°C) Spans from 1:1 to

30:1 ±(0.05% URL + 0.125% of span)

Spans from 30:1

to 100:1 ±(0.06% URL + 0.175% of span)

Over-Pressure Limit Same as URL

1. Consult factory for special ranges and materials which may be available. For example, 0 to 6.22 kPa (0 to 25" H2O) at

±0.10% reference accuracy.

DVS205

Technical Specifications Page 3

Power

Input at 0 to 75°C (32 to

167°F) 8 to 30 Vdc, 10 mW average

Input at –40 to 0°C (–40 to

32°F) 8.5 to 30 Vdc, 10 mW average

Physical

Dimensions 120 mm H by 163 mm W by 89 mm D (4.7 in. H by 6.4 in. W by 3.5 in. D)

Weight 2.2 kg (4.9 lb)

Vibration Effect Sensor outputs shall not shift more than +0.1% of upper range limit per g from 5 to 2000

Hz in any axis when tested per IEC 770, Section 6.2.14.

Construction Standard Transducer is all stainless steel construction with silicone fill fluid,

316L diaphragms and glass-filled PTFE o-rings.

Coupling is A360 Aluminum with urethane coating.

Optional Transducer includes Hastelloy C-276 wetted parts (construction is

NACE compliant per MR0103 and ISO15156/MR0175), inert fill fluid.

Coupling is available316 stainless steel.

Mounting Factory-installed on enclosure of FB103, FB107E, and FB503 units. See respective

technical specifications for unit mounting options.

Connections Process 1/4-18 NPT on 2-1/8 inch centers (on coplanar flange)

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:

Standard

Silicone Fill

Sensor

–40 to 100°C (–40 to 212°F)

Process

Temperature (at

transmitter

isolator flange) 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 Tamb = Product Max Tamb – [(Actual Process

Tamb – 85°C (185°F)) * 1.5]

Example:

Adjusted Max Tamb = 75°C – [(95°C – 85°C) * 1.5] = 60°C.

Approvals

Same as the FloBoss unit in which it is installed.

DVS205

Page 4

Technical Specifications

Bristol, Inc., Bristol Canada, BBI SA de CV and Emerson Process Management Ltd, Remote Automation Solutions division (UK), are wholly owned subsidiaries of

Emerson Electric Co. doing business as Remote Automation Solutions (“RAS”), a division of Emerson Process Management. FloBoss, ROCLINK, Bristol, Bristol

Babcock, ControlWave, TeleFlow and Helicoid are trademarks of RAS. AMS, PlantWeb and the PlantWeb logo are marks of Emerson Electric Co. The Emerson

logo is a trademark and service mark of the Emerson Electric Co. All other marks are property of their respective owners.

The contents of this publication are presented for informational purposes only. While every effort has been made to ensure informational accuracy, they are not to

be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. RAS reserves the

right to modify or improve the designs or specifications of such products at any time without notice. All sales are governed by RAS’ terms and conditions which

are available upon request. RAS does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and

maintenance of any RAS product remains solely with the purchaser and end-user.

Emerson Process Management

Remote Automation Solutions

Marshalltown, IA 50158 U.S.A.

Houston, TX 77041 U.S.A

Pickering, North Yorkshire UK Y018 7JA

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