Greyline Instruments DLT-2.0 Specifications

Differential Level Transmitter

with Non-Contacting Sensors

for Mechanical

Barscreens

Greyline DLT 2.0

Displays, Transmits

and Controls

Differential Level

and more...

Simple 5-key Calibration

Three 4-20mA Outputs

Two Control Relays

Level Flume Calibration

and

Displays Up and Downstream Level

Measures Open Channel Flow

Monitors Parshall Flume Submergence

Versatile, Easy to Use

One Instrument Does the

Work of Three

Differential Level and Control

Open Channel Flow Monitoring

plus

with Two Non-Contacting Ultrasonic Sensors

Install one Sensor on each side of a barscreen to continuously monitor,
transmit and control level. Use the built-in control relays or 4-20mA
outputs to automatically activate the barscreen rake at preset levels.

The DLT 2.0 is a simple solution for barscreen level control at wastewater
treatment plant headworks, pump stations and combined sewer systems.
It includes two non-contacting ultrasonic sensors to measure level. With
sensors positioned above a channel, up and downstream from the
barscreen, the DLT 2.0 can display and transmit differential level. The
downstream sensor can also be installed above a flume or weir to
measure and totalize open channel flow.

Three 4-20mA outputs are configured to transmit upstream level,
downstream level (or flow) and differential level. Built-in relays can be
calibrated for level control, differential level control or open channel flow.

Multi-function Level Transmitter

Does Two or Three things at once...

so You don’t have to

4-20mA Upstream Level

4-20mA Differential Level

4-20mA Open Channel Flow

4-20mA Upstream Level

4-20mA Downstream Level

4-20mA Differential Level

Barscreen Differential

Open Channel Flowplus

Reduce costs and simplify instrumentation at
treatment plant headworks. With a barscreen
upstream from a flume, the DLT2.0 can measure
both

differential level and flow through the flume
with just two ultrasonic sensors and one electronics
enclosure.

The DLT 2.0 includes three 4-20mA outputs. It
displays flow rate and total flow through the flume,
plus upstream level and differential level.

Barscreen Differential

Monitor, transmit and control barscreen level with
one instrument. Ultrasonic sensors mount up and
downstream from a barscreen. Use the isolated
4-20mA outputs or control relays to activate the
screen’s cleaning rake at preset levels or differential
level.

4-20mA Tank 1 - Level/Volume

4-20mA Tank 2 - Level/Volume

Two-Tank Inventory

Monitor level in two tanks with one instrument. The
DLT 2.0 will alternate display of level in both tanks
plus transmit 4-20mA outputs. Use the built-in
relays to activate alarms or level controls.

Calibration is easy with the DLT’s built-in keypad
and menu system.

Submerged Flow Alarm

Parshall flumes can provide accurate flow
measurement with the discharge submerged up to
70% (depending on flume size). Use the DLT 2.0 to
measure flow through the flume and to activate an
alarm when discharge level reaches critical
submergence level.

DLT 2.0 Specifications

General Specifications

Electronics Enclosure:

Accuracy:

Display:

Programming:

Power Input:

Outputs:

Control Relays:

Electrical Surge Protection:

Operating Temp. (electronics):

Approximate Shipping Weight:

Sensor Specifications

Maximum Range:

Deadband (Blanking):

Beam Angle:

Operating Frequency:

Exposed Materials:

Operating Temperature:

Temperature Compensation:

Sensor Cable:

Options

Sensors:

Sensor Cable:

Power Input:

Extra Control Relays:

Data Logger:

Enclosure Heater:
Intrinsic Safety Barriers:
Sensor Mounting Stand:

Sunscreens:

Greyline DLT 2.0 Differential Level Transmitter

Watertight and dust tight NEMA4X (IP 66) polycarbonate with clear, shatterproof cover
±0.25% of Range or 2 mm (0.08") whichever is greater, Repeatability and Linearity: ±0.1%
White, backlit matrix - displays upstream, downstream and differential level, open channel
flow and totalizer, relay states, operating mode and calibration menu
built-in 5-key calibrator with English, French or Spanish language selection
100-240VAC 50-60Hz (see Options), 3 Watts maximum (with standard features)
Three Isolated 4-20mA (upstream and downstream level (or open channel flow) and
differential level, 1000 ohm load maximum.
Qty 2, rated 5 amp SPDT, programmable for level control, differential control,
or flow proportional pulse
Sensor, 4-20mA outputs and AC power input

-5° to 140°F (-20° to 60°C)
15 lbs. (6.8 kg)

Includes Two PZ15 Ultrasonic Sensors

15 ft (4.57 m) with standard PZ15 sensor
Programmable, Minimum 8 in (203.2 mm)
8°
92 Khz
PVC

-40° to 150°F (-40° to 65°C)
Temperature probe inside level sensor for high accuracy in changing temperatures
RG62AU coaxial, 25 ft (7.6 m) standard length (See Options)

32 ft. (10 m) measurement range / Intrinsically Safe models
50 ft. (15 m) or 100 ft (30 m) RG62AU coaxial continuous from Sensor, or splice up to 500
ft (150 m) with optional JB Watertight NEMA4 steel with connection terminal strip
9-32 VDC
4 additional (6 total) rated 5 ampere SPDT
2 million point logger with USB output and Windows software – 3 channel logging (A & B
sensors plus Differential or Open Channel flow
Thermostatically controlled - recommended for temperatures below 32°F (0°C)
For Sensor mounting in Class I,II,III, Div. I,II, Groups C,D,E,F,G hazardous locations
Adjustable, includes galvanized steel pipe, flanges, fittings and hardware
Sensor sunscreen and enclosure sunscreen for outdoor installations

Dimensions

25 ft (7.6 m) RG62AU
COAXIAL CABLE
(50 ft 15 m OR
100 ft 30 m )OPTIONAL

3/4“ NPT

~4.25"

(108 mm)

OVERALL

3.125"

79.4 mm

PZ15 SENSOR

2.1" (53 mm)

ISOLATION
COUPLING
(SUPPLIED)

3/4" NPT

1.125"
(28.6 mm)

7.4 / 188 mm"

6.46 / 164 mm"

DLT 2.0

Differential Level
Transmitter

CONDUIT ENTRY

LOCATION

10 / 254 mm"

10.94" / 278 mm

ENCLOSURE

5.12 / 130 mm"

SIDE VIEW

New - Greyline DLT 2.0

Differential Level Transmitter

w

Measures Level, Differential Level and
Open Channel Flow
Includes Two Ultrasonic

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Non-Contacting

Sensors

Transmits 4-20mA Output in proportion to
Level Differential Open Channel Flowplus

Barscreen control applications and sewage treatment plant headworks that used to
require several instruments can all be monitored now by one ultrasonic level
indicating transmitter.

Install one sensor on each side of a barscreen (or any other flow obstruction) to
continuously monitor and transmit differential level. Or mount the downstream
sensor in a flume to measure differential level plus open channel flow.

The DLT 2.0 Differential Level Transmitter uses non-contacting ultrasonic sensors to monitor two independent
levels. It can be programmed to display and transmit 4-20mA output including differential level, upstream level,
downstream level or open channel flow. Two programmable relays are included
control, flow control, flow pulse, flume submergence alarm, pump control or echo loss alarm. Four
relays (six total) are optional.

The DLT 2.0 is ideal for automated barscreen monitoring and control. The instrument is accurate and easy to
operate with its built-in keypad calibration system. The sensors are non-contacting so it requires no
maintenance. Level/Flow readings are displayed on the large, backlit LCD display.

Options include Intrinsically Safe sensors for hazardous rated locations, extra control relays, enclosure heater,
data logger and sensor cable up to 500 ft (150 m) length.

for level alarm, differential

additional

How to Order

Applications Support

No Risk Appraisal

The Greyline Guarantee

Canada: 16456 Sixsmith Dr., Long Sault, Ont. K0C 1P0

Tel: [phone] Fax: [phone]

USA: 105 Water Street, Massena NY 13662

Tel: [phone] Fax: [phone]

Internet: www.greyline.com E-mail: [e-mail]

Contact a Greyline sales representative in your area or phone one of our sales
engineers. Describe your requirements and receive our prompt quotation.

Take advantage of Greyline's applications experience. Phone [phone] for
advice and information on applications, installation or service for Greyline instruments.

The Greyline DLT 2.0 Differential Level Transmitter must meet your requirements.
Discuss your application with a Greyline representative to arrange a 30-day trial.

Quality of Materials and Workmanship - Each instrument manufactured by Greyline is
warranted against defects in materials and workmanship for a period of one year from
date of purchase. Refer to our limited warranty included with each product.

RELIABLE MEASUREMENT AND CONTROL