Badger Meter SDI Specifications

Flow Sensors

Insert Style Flow Sensors

SDI Series

DESCRIPTION

The Data Industrial SDI Series insert flow sensors from
Badger Meter offer accurate liquid flow measurement in closed
pipe systems in an easy to install economical package. Impeller
sensors offer a quick response to changes in flow rate and are well
suited to flow control and batch type applications in addition to
flow monitoring. The four-bladed impeller design is rugged,
non-fouling and does not require custom calibration. Coupled
with the proprietary patented digital detection circuit, the sensor
measures flows from under 0.5 ft/sec (0.15 m/sec) to more than
20 ft/sec (6.1 m/sec) regardless of the conductivity or turbidity
of the liquid. The standard frequency output produces a low
impedance square wave signal proportional to flow rate that may
be transmitted up to 2000 ft (610 m) without amplification. The
SDI Series includes:

• Single direction powered insert with raw, scaled pulse and
analog output

• Bidirectional powered insert with analog and scaled
pulse output

• Battery powered insert with a local or remote display and
scaled pulse output

HOT TAP SENSORS OPTIONAL

APPLICATIONS

SDI insert style flow sensors are intended for general clean liquid
flow measurement applications. They are available in either brass
or stainless steel construction.

FUNCTIONALITY

These insert style sensors are intended for direct installation into
pipelines through a 1 in. (25 mm) tap. The pipeline must be out
of service and not under pressure at the time of installation. For
any pipeline that is in service at the time of installation or cannot
be de-pressurized and drained for service, the SDI hot tap model
equipped with isolation valves is recommended.

Three different stem lengths in both the direct insert and hot tap
versions accommodate pipe diameters 1-1/2…36 in. (38…914 mm)
depending on the pipe material and tapping methods. Larger sizes
usually require the use of hot tap models.

In pipe sections with at least 10 diameters of straight pipe
upstream of the sensor and 5 diameters of straight pipe
downstream, accuracies of ±1% of rate may be achieved when
the flow sensor is installed at the correct insertion depth and
properly aligned.

Hot tap sensors feature an isolation valve and mounting hardware
to install or remove the sensor from a pipeline that would be
difficult to shut down or drain. In a true hot tap installation the
sensor is mounted in the pipe under pressure by attaching a service
saddle or weld-on fitting to the pipe and mounting the isolating
valve to the threaded connection. A hole is then cut in the wall of
the pipe through the valve using a commercial tapping machine
with a 1 in. size cutter. Once the hole is cut, the tapping machine
is removed and the valve is shut. Then the sensor assembly is
mounted to the isolation valve and extended into the pipeline
to measure flow. Even in new construction a hot tap sensor may
be appropriate for service considerations. The hot tap sensor is
constructed of 316 stainless steel and is rated for service to 1000
psi at 70° F (21° C) (see “Maximum Pressure Rating for SST Stem” on

page 4). The sensor installs in a 1 in. NPT tap for both wet and

dry installations. The small stem diameter allows the sensor to be
inserted into the pressurized pipeline by hand without the need for
an installation tool. Mounting hardware holds the sensor firmly in
place at the correct depth and alignment.

BATTERY POWERED SENSORS OPTIONAL

Battery powered versions are complete flow measuring systems
providing a local or remote programmable display of rate, total
or both, powered by a C size lithium battery that has a five year
life span.

SEN-DS-01382-EN-07 (May 2017)

Product Data Sheet

Flow Sensors, Insert Style Flow Sensors

OUTPUT CONFIGURATIONS

Standard Frequency

Sensor output is a pulse proportional to flow. The signal is similar to all 200 Series flow sensors and will interface with all existing Data
Industrial transmitters and monitors. The power supply to the sensor and the output signal from the sensor is carried on the same two wires.
Wire connections are made at screw terminals on removable headers inside the NEMA 4X housing.

Analog Output

The sensor is also available with a two-wire loop powered 4…20 mA output. The analog output is produced by an onboard
micro-controller for precise, drift-free signals. Sensors may be preprogrammed at the factory or field programmed using the a computer
with the programming kit and Windows® based software program. All information is stored in the flow sensor nonvolatile memory.

Scaled Pulse Output

The scaled pulse is produced by an onboard micro-controller for precise, accurate outputs. This option may be programmed to produce an
isolated solid state contact closure scaled to any number of engineering units of measure. Sensors may be preprogrammed at the factory
or field programmed using the a computer with the programming kit and Windows® based software program. All information is stored in
nonvolatile memory in the flow sensor. This is a four-wire option.

Bidirectional Flow, Analog Output

This option provides a programmable 4…20 mA signal proportional to flow rate and a contact closure to indicate the direction of flow. The
unit may be preprogrammed at the factory or field programmed using a computer with the programming kit and Windows® based software
program. The user can program the unit for pipe size, flow scale and the direction of flow. This is a six-wire option.

Bidirectional Flow, Scaled Pulse Output

This option provides the user with a choice of outputs. In one case the sensor provides an output scaled to the required number of
engineering units on one set of terminals and a contact closure to indicate the direction of flow on another. The other choice provides
two isolated scaled pulse outputs, one for each direction. Programming the output choice, pipe size, output scale and direction of flow by
the user are also accomplished by using a computer with the programming kit and Windows® based software program. This option also
requires six wires.

Display Options

All models except the standard frequency output version may also be equipped with a display. Integrated into the NEMA 4X housing, the
eight digit LCD may be programmed to show rate of flow, flow total or toggle between the two. Bidirectional models also show
flow direction.

The eight character 3/8 in. LCD is mounted on the sensor visible through a lens at the top of the electronics housing.

For battery powered versions only, an optional remote display is available where the LCD is located in a wall mount NEMA 4 enclosure. The
remote may be connected to the flow sensor up to a maximum of 50 ft (15 m) away using extension cables.

Page 2 May 2017

SEN-DS-01382-EN-07

SPECIFICATIONS

Product Data Sheet

Sensor stem,

Wetted Materials

Sensor Tip

O-rings, Bearings, Shaft See ordering matrix

Operating Temperature

Maximum Pressure Rating
Stainless Steel (Non Shock)

Optimum Design Flow
Range

Pressure Drop 0.5 psi or less at 10 ft/sec (3 m/sec.) for all pipe sizes 1.5 in. (38 mm) diameter and up

Accuracy Standard: to ±1% of rate over optimum flow range

Straight Pipe Requirement

Repeatability ±0.5%

Enclosure

Programming

Display (Optional)

Accessories

mounting adapter,
isolation valve,
and nipple:

Polyphenylene sulfide (PPS)

Polyetheretherketone (PEEK)

Electronics 14…150° F (–10…65° C)

LCD –4…150° F (–20…65°C)

1000 psi (68.9 bar) @ 70° F (21° C)

900 psi (62 bar) @ 100° F (37.8° C)

670 psi (46.1 bar) @ 140° F (60° C)

225 psi (15.5 bar) @ 180° F (82° C)

600 psi (41.3 bar) @ up to 140° F (60° C)

225 psi (15.5 bar) @ 180° F (82° C)

1…20 ft/sec. (0.30…6 m/sec.)

Extended flow range < 0.5…20 fps

Install sensor in straight pipe section with a minimum distance of 10 diameters upstream and
5 diameters downstream to any bend, transition, or obstruction.

Sensor- battery Polypropylene with Viton® sealed acrylic cover. Meets NEMA 6P specifications

Sensor Polypropylene with Viton® sealed acrylic cover. Meets NEMA 4X specifications

Remote Polycarbonate w/ Neoprene® sealed cover. Meets NEMA 4X specifications.

Battery powered
version

Bidirectional, pulse,
and analog versions

8 character, 3/8 in. (10 mm) LCD

STN (Super Twisted Nematic) display

Annunciators for rate, total, totalizer multipliers, low battery, flow direction

USB to DIC converter programming kit (840134-0002)

ASDIB-20 programming kit- battery powered A-301 connector cable or USB

Battery powered
version

316 Stainless steel

Brass, B16, UNS C36000

A-303 connector cable and SDI Series software

USB to DIC converter programming kit (840134-0002)

07101 5 ft (1.5 m) extension cable

07108 10 ft (3 m) extension cable

07102 20 ft (6 m) extension cable

07109 50 ft (15 m) extension cable

SEN-DS-01382-EN-07

Page 3 May 2017