Setra 550 Data sheet

Model 550

Low Pressure Transducer

General Service and Submersible

Applications

● Tank Level

● Reservoir Level

● River Level

● Hydro-Power

● Open Channel Flow

● Flood Warning

● Process

● Waste Water

● Clean Room

Benefits

■ Superior Stability

Avoids Down Time

■ ±0.25% FS High Accuracy

■ NEMA 4/ IP65and NEMA

6/IP68 Rated

etra’s Model 550 low pressure transducer
features 3:1 range turndown for field

S

adjustment from 110% to 32% of the
nominal pressure range, making this unit well
suited to applications that are subject to
overpressure. Adjustment is made via the switch
and potentiometer conveniently located on the
top of the transducer housing.

Utilizing capacitance technology, the Model 550
is designed to measure pressures as low as
10 in. W.C up to 400 in. W.C. (1 psi up to 15 psi)
and features a wide selection of current or
voltage outputs with 0.25% full scale accuracy.

The Model 550 is packaged in a rugged 316
stainless steel housing for use in general
purpose and submersible applications. A male
or female threaded pressure fitting is offered for
general purpose applications, and an open face
style with a KF25 flange is offered for
submersible applications. This open face
architecture keeps the internal bore of the
transmitter as large as possible, making this unit
well-suited to waste water and viscous fluid
applications. A triple sealed cable assembly
assures that water cannot penetrate the sensor
or electronic enclosure, even if the sheath
sustains damage during use.

159 Swanson Road, Boxborough, MA 01719/Telephone: [phone]/Fax: [phone]

Principle of Operation

The capacitive sensor is constructed of an
electrically isolated stainless steel electrode
and a ceramic diaphragm, mounted closely
and in parallel to each other. The diaphragm is
capable of slight flexing under applied
pressure. A minute change in applied pressure
alters the gap between the electrode and
diaphragm. This change is detected by a
custom designed ASIC, amplified, and
converted to high-level linear output signal
that is proportional to applied pressure.

The Model 550 circuit is RFI/lightning
protected, virtually eliminating costly field
replacement.

This unit offers high performance, exceptional
long-term service and stable operation, yet is
a cost-effective choice for the most
demanding applications.

Pressure Ranges

Pressure Proof Burst
Range Pressure Pressure

≤85 in. W.C. 803 in. W.C. 1219 in. W.C.
86 in.W.C. to 140 in. W.C. 1607 in. W.C. 2410 in. W.C.
141 in. W.C. to 400 in. W.C. 2025 in. w.C. 4017 in. W.C.
≤3 psi 29 psi 44 psi

3.1 to 5 psi 58 Psi 87 psi

5.1 to 15 psi 102 psi 145 psi

■ 3:1 Range Turndown

■ Fast 5ms Response

■ Long-Term Service

Exceeding 10 Million
Cycles.

■ Meets

Standards

When it comes to a product to
rely on - choose the Model 550 .
When it comes to a company to
trust - choose Setra.

CECE

CE Conformance

CECE

ISO

9001:
2000

Certified

✓

Visit Setra On-line:

http://www.setra.com

800-257-3872

Model 550 Specifications

Performance Data

Accuracy RSS
Thermal Effects
Compensated Range °F (°C) -5 to +140 (-20 to +60)

Zero Shift %FS/100°F (100°C) 1.0 (2.0)
Span Shift %FS/100°F (100°C) 1.0 (2.0)

Long-Term Stability 0.25% FS/1 year
Response Time 5 ms
Zero Adjustment ±10% (by Potentiometer)
Span Adjustment ±10% (by Potentiometer)
Mounting Effects 25% Span Max.

*RSS of Non-Linearity, Non-R epeatability and Hysteresis.
**Units calibrated at nominal 70°F. Maximum thermal error computed from
this datum.

*

(at constant temp) ±0.25% FS

**

Pressure Media

Water or Viscous Fluids Compatible with 316 SS,
Ceramic and Nitrile

Specifications subject to change without notice.

Environmental Data

Temperature
Operating* °F (°C)

w/Elec Codes E2 +15 to +185 (+25 to +85)
w/Elec. Codes UA -5 to +120 (-20 to +50)
w/Process Media -40 to +212 (-40 to +100)

Storage °F (°C)

w/Elec Codes E2 +15 to +185 (+25 to +85)
w/Elec code UA -5 to 120 (-20 to +50)
w/Process Media -40 to +212 (-40 to +100)

*Operating/Storage temperature limits of the cable or process media.

Physical Description

Case 318 Stainless Steel
Rating IP68 (NEMA 6) Submersible

G IP65
Wetted Parts Inconel, Ceramic & Nitrile
Electrical Connection See Order Chart Below
Pressure Fitting 318 SS See Order Chart Below
Weight 11.6oz (330g)
Diameter 38.1 mm w/o K2 flange

40.0 mm w K2 flange

Electrical Data (Voltage)

Circuit 3 -Wire
Excitation 7.5 to 35 VDC (8-35 VDC,

1-6 VDC Output)

Output 0.5 to 5.5 VDC, 1 to 6 VDC,

0 to 5 VDC, 0.1 to 5.1 VDC,
1 to 5 VDC

*Zero output is factory set to 1.0% of Full Scale
*Span output is factory set 1.0% of Full Scale

Electrical Data (Current)

Circuit 2 -Wire
Excitation 9 to 35 VDC

*

Output

4 to 20 mA

Maximum Loop Resistance (Vs-9) x 50 Ohms

*Zero output factory set to within ±0.16 mA.
*Span output factory set to within ±0.16 mA.

Accessories

Part No. Description

GA9 Large Din, 4365-A, Strain Relief
GA10 Large Din, 4365-A, 1/2” Conduit
GA11 6-Pin Bendix to 125°C
GA25 Plastic Noe Cone w/G 1/4 Port

Outline Drawings

3.2
81

1.5

dia.

38

Shown w/1/2-14 NPT Conduit

2.9
74

1.57

dia.

40

Shown w/KF25 Flange and
Submersible Cable Assembly

ORDERING INFORMATION

Code all blocks in table.

Example: Part No 5501002PG211UAF- For a Model 550 Pressure Transducer, 2 PSIG, G 1/4” Male Pressure Fitting, 4-20 mA Output, Molded Submersible Cable, and 0.25% Accuracy

G

Model

5501 = 550

Range
001P = 1 psi 010W = 10 in W.C.
002P = 2 psi 015W = 15 in W.C.
003P = 3 psi 025W = 25 in W.C.
004P = 4 psi 050W = 50 in W.C.
005P = 5 psi 100W = 100 in w.C.
007P = 7 psi 150W = 150 in W.C.
010P = 10 psi 200W = 200 in W.C.
012P = 12 psi 250W = 250 in W.C.
015P = 15 psi 300W = 300 in W.C.

350W = 350 in W.C.
400W = 400 in W.C.

Pressure

G = Gauge

Pressure Fitting
G3 = G1/4 Female
2M =1/4-18 NPT Male
4M =1/2-14 NPT Male
G2 = G1/4 Male
N2 = KF25 Flange

Output

11 = 4-20mA, 2 wire
28 = 1-6VDC, 3 wire
2B = 0-5VDC, 3 wire
24 = 0.5-5.5VDC, 3 wire
27 = 1-5VDC, 3 wire
22 = 0.1-5.1VDC, 3 wire

Elec. Termination

UA = Molded Submersible

Cable* (Submersible up to

200 Meters [656 ft.])

E2 = Large DIN 43650 Connector

w/Mating Plug

* Cable has a polyurethane sheath and is not
recommended for use with Hydrocarbons, please
contact factory and specify Hytrel cable. when ordering

F

Accuracy

F = 0.25% FS

in.

mm

Approval
(Option)
G = Galvanic

Intrinsic Safe

SSP550 Rev. C 12/27/06

While we provide application assistance on all Setra products, both
personally and through our literature, it is the customer’s responsibility
to determine the suitability of the product in the application.

Please contact factory for
configurations not shown.

159 Swanson Road, Boxborough, MA 01719/Tel: [phone];

Toll Free: 800-257-3872; Fax: [phone]; email: [e-mail]