NON-CONTACT ULTRASOUND

6

Volume or Open

Channel Flow

A remote mounted, full-featured ultrasonic transmitter with

extensive agency approvals. Many transducer configurations

and transmitter options are available for greater versatility.

Convenient Front Panel Interface

Front panel keypad makes programming convenient;

once wired, there’s no need to open the enclosure.

A large, 16-character alphanumeric display shows all

parameters and a password code prevents unautho-

rized tampering with configuration data.

Choice of Transducers

The Model 344 employs the powerful 38 kHz Kynar transducer

used primarily for level and volume applications. The Model 345

uses the 50 kHz transducer, available either in Kynar or 316

stainless steel. Transducers feature temperature compensation.

Full-Featured Electronics

Automatic, continuous self-test checks transducer

signal, temperature sensor, all outputs and system

functionality for proper operation. False target

buffering feature eliminates signal interference for

up to nine fixed tank obstructions.

Model 344/345 Transmitter Specifications

Power Supply

120 VAC ±10%, 50-60 Hz

240 VAC ±10%, 50-60 Hz

24 VDC ±20%

Power Consumption

12 watts (without heater)

Output Signal

4–20 mA isolated (1,000

Ωload),

RS-232 (data logger downloading)

Relays

Four, 10-amp resistive, SPDT

Fail-safe

User selectable for analog and

relay outputs

Display

16-character alphanumeric

Keypad

16-button integral to front panel

Response Time

2 seconds, typical

Accuracy

±0.25% of configured span

Ambient Temperature

with Heater & Thermostat -40° to +160° F (-40° to +70° C)

w/o Heater & Thermostat -4° to +160° F (-20° to +70° C)

Agency Approvals

Class

I

, Division 2, Non-incendive

and NEMA 4X from FM and CSA

• Sump & Wastewater

• Slurries, Viscous Fluids

• Pulp & Paper

• Power Generation

• Petrochem

Applications

Transducer Specifications

Frequency

38 kHz

50 kHz

Max Range

35 feet (10.7 m)

25 feet (7.6 m)

Max Span

33.5 feet (10.2 m)

24 feet (7.3 m)

Process Temp

-40° to +163° F

-40° to +200° F

(-40° to +73° C)

(-40° to +93° C)

Process Pressure

Atmospheric to 50 psig (3.45 bar)

Beam Angle

Conical 12°

Cable Length

500 feet maximum