Badger Meter 225 Specifications

Flow Sensors

Series 225BR, 226BR, 226SS Hot Tap Flow Sensors

DESCRIPTION

The Series 200 flow sensors feature a six-bladed impeller design with a proprietary non-magnetic sensing mechanism. The forward swept impeller shape provides higher, more consistent torque and is less prone to be fouled by water borne debris. The forward curved shape coupled with the absence of magnetic drag provides improved operation and repeatability at lower flow rates. This is especially true where the impeller is exposed to metallic or rust particles found in steel or iron pipes. As the liquid flow turns the impeller, a low impedance square wave signal is transmitted with a frequency proportional to the flow rate. The signal can travel up to 2000 ft (610 m) between the flow sensor and the display unit without the need for amplification. All sensors except irrigation versions are supplied with 20 ft (6 m) of 2-conductor 20 AWG shielded UL type PTLC 221° F (105° C) cable.

MODEL 225BR AND 226BR/226SS SENSORS

The 225BR and 226BR/226SS flow sensors are used for flow measuring applications in most metallic or non-metallic pipes where it would be difficult to shut down or drain the line for installation or service. The 225 flow sensor features a gate valve for isolation. The 226 flow sensor uses a ball valve. If the pipe is to be hot tapped, the ball valve is recommended. The sensor mounts in a 2 in. NPT pipe saddle or Threadolet® for installation in pipe sizes from 3…40 in. Positioning nuts on the three threaded retaining rods allow the sensor to be accurately positioned to a standard insertion depth of 1-1/2 in. into the pipe.

When this insertion depth is maintained and there are at least 10 upstream and 5 downstream diameters of straight uninterrupted flow, an accuracy of ±1 percent of full scale can be obtained between flow velocities of 0.5…30 feet/second. Each sensor has an isolation valve and pipe nipple to allow the sensor to be installed in a pressurized pipe. This is accomplished by first attaching a saddle or Threadolet to the pipe and screwing the nipple and isolation valve into the saddle or Threadolet fitting. A hole is then drilled through the pipe using a commercial tapping machine. When completed, the tapping apparatus is removed, the isolation valve is closed, and the sensor is installed using the Model HTT Hot Tap Tool. For installation information, see the Hot Tap Flow Sensor, Series

225/226, Application Data Sheet, available in the Resource Library at

www.badgermeter.com.

OTE:N The overall length of the sensor tube is 18 in. (46 cm),

however, a clearance height of 35 in. (89 cm) should be allowed for the fully extended length of the sensor tube outside the isolation valve.

SPECIFICATIONS

Wetted Materials for All Sensors

Sensor Sleeve and Hex Adapter for 225BR and 226BR

Sensor Sleeve and Hex Adapter for 226SS

Temperature Ratings

Pressure Ratings

Recommended Design Flow Range

Accuracy

Repeatability ± 0.3% of full scale over recommended design flow range Linearity ± 0.2% of full scale over recommended design flow range

Transducer Excitation

Output Frequency

Output Pulse Width

Electrical Cable for Standard Sensor Electronics

Electrical Cable for IR Sensor Electronics

See "Part Number Construction" on page 3

Sleeve: Admiralty Brass, UNS C44300 Hex Adapter: Lead-free Brass C89833

316 Series Stainless Steel

Standard Version: 221° F (105° C) continuous service Irrigation Electronics: 150°F (66° C)

Model At 100° F

225BR 300 psi 210 psi 226BR 400 psi 250 psi 226SS 400 psi 300 psi

0.5…30 ft/sec Initial detection below 0.3 ft/sec

± 1.0% of full scale over recommended design flow range ± 4.0% of reading within calibration range

Supply voltage = 8V DC min. 35V DC max. Quiescent current = 600 uA (typical) OFF State (V

impedance) ON State (V

3.2…200 Hz

5 msec ±25%

20 feet (6 m) of 2-conductor 20 AWG shielded U.L. type PTLC wire provided for connection to display or analog transmitter unit. Rated to 105° C. May be extended to a maximum of 2000 feet (610 m) with similar cable and insulation appropriate for application.

48 inches (122 cm) of U.L. Style 116666 copper solid AWG 18 wire with direct burial insulation. Rated to 221° F (105° C).

High

Low

(High Temperature Model Only)

) = Supply voltage – (600 uA * Supply

) = 1.2V DC @ 40 mA (15 Ω + 0.7V DC)

At 300° F

SEN-DS-01556-EN-06 (February 2018)

Product Data Sheet

Dimensions

17.5 in. (44 cm) MAX

Flow Label

Viton

Tefzel

Teflon

DIMENSIONS

Bleed Petcock

Hex Nut

Isolation Valve

Jam Nut

Nipple

8.5 in. (22 cm) MIN - 11.5 in. (29 cm) MAX

Lock Nut

Positioning Collar

2 in. NPT Adapter

Isolation Valve Assy.

1.5 in (3.8 cm) Insertion Depth

16.375 in. (42 cm) Sensor Length

Figure 1: 225/226 Dimensions

OTE:N All dimensions are for reference only. To remove the flow sensor, there must be 25 in. (89 cm) clearance above the outside wall of

the pipe. A cutting tool may require additional clearance.

PART NUMBER CONSTRUCTION

225 Standard Sensor

Example: 2 25 BR 00 0 5 - 1 2 1 1

STYLE

Hot Tap Insert - Gate Valve 25

MATERIAL

Brass BR

SIZE

Insert Style 00

ELECTRONICS HOUSING

PPS 0

ELECTRONICS

Standard Flow (STANDARD) 5

IR-Irrigation 6

O-RING

EPDM (STANDARD) 1

Buna N 8

SHAFT

Zirconia Ceramic 0

Tungsten Carbide (STANDARD) 2

316 Stainless Steel 6

IMPELLER

Nylon (STANDARD) 1

BEARING

UHMWPE (STANDARD) 1

Page 2 February 2018SEN-DS-01556-EN-06

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