4

NON-CONTACT ULTRASOUND

Volume or Open

Channel Flow

Available as an integral or remote mounted unit,

this versatile and powerful ultrasonic transmitter

is easy to install and quick to calibrate.

Advanced Electronics

Isolated 4–20 mA output with an active/passive mode for

loop power or device power. RS-485 with Modbus protocol

allows bi-directional communication with DCS or PLC. Two

or four 10 amp SPDT gold flash relays for a wide variety of

alarm and control schemes.

Explosion-Proof Transmitter and Transducer

The Model 300/301 has Explosion-Proof FM and CSA

agency approvals for both the transducer and the trans-

mitter: Class

I

, Division 1, Groups B, C, and D.

Fast, Password-Protected Calibration

calibration in 90 seconds. A password protection feature also

prevents unwanted tampering with the configuration data.

Model 300/301 Transmitter Specifications

Power Supply

120 VAC ±10%, 50-60 Hz

240 VAC ±10%, 50-60 Hz

24 VDC ±20%

Power Consumption

12 watts maximum

Analog Output Signal

Active Mode

4–20 mA (isolated); maximum of

1,000

Ωloopresistance

Passive Mode

4–20 mA (isolated); loop resist-

ance dependent on power supply

(32 volt max) 1,000

Ω@24volts

Digital Output

RS-485 with Modbus

Relays

10 amp SPDT resistive (0, 2 or 4)

Fail-safe

User selectable for analog and

relay outputs

Ambient Temperature

Electronics

-40° to +160° F (-40° to +71° C)

Display

Two-line, 32 character LCD

Keypad

16-button (inside housing)

Response Time

2 seconds, typical

Accuracy

±0.25% of calibrated span

• Viscous Fluids

• Acids, Caustics

• Water & Wastewater

• Chemicals

• Pulp & Paper

• Power Generation

Applications

Model 300/301

A 16-button keypad and

two-line, 16-character

LCD display is inside

the explosion-proof

housing

Transducer Specifications

Frequency

38 kHz

Beam Angle

Conical 12°

Max Range/Span

30 feet (9.1 m) / 28.5 feet (8.7 m)

Dead Zone

18 inches (460 mm) minimum

Process Temp

-40° to +163° F (-40° to +73° C)

Process Pressure

Atmospheric to 50 psig (3.45 bar)

Cable Length

500 feet maximum