Dwyer Instruments TDS Series Bedienungsanleitung

Warranty, Service & Repair

WARRANTY

About this Manual:

PLEASE READ THE ENTIRE MANUAL PRIOR TO

INSTALLING OR USING THIS PRODUCT. This manual

includes information on all models of Dwyer Thermal Dispersion

Flow Switches: TDS series. Please refer to the part number locat-

ed on the switch label to verify the exact model which you have

purchased.

User’s Responsibility for Safety:

Dwyer manufactures a wide range of flow switches and technolo-

gies. While each of these sensors is designed to operate in a wide

variety of applications, it is the user’s responsibility to select a sen-

sor model that is appropriate for the application, install it properly,

perform tests of the installed system, and maintain all components.

The failure to do so could result in property damage or serious

injury.

Proper Installation and Handling:

Because this is an electrically operated device, only properly-

trained staff should install and/or repair this product. Use a proper

sealant with all installations. Never overtighten the sensor within

the fitting, beyond a maximum of 80 inch-pounds torque. Always

check for leaks prior to system start-up.

Material Compatibility:

The TDS series sensors are available in two different wetted materials.

Models TDS 1__ are made of Polypropylene (PP) with Ryton tips.

Models TDS 2__ are made of Polyvinylidene Fluoride (PVDF). Make

sure that the model you have selected is compatible with the application

liquid. To determine the chemical compatibility between the sensor and

its application liquids, refer to an industry reference such as the

Compass Corrosion Guide (available from Compass Publications,

phone 858-589-9636).

Wiring and Electrical:

The supply voltage used to power the sensor should never exceed a

maximum of 36 volts DC. Electrical wiring of the sensor should be

performed in accordance with all applicable national, state, and

local codes.

Flammable, Explosive and Hazardous Applications:

DO NOT USE THE TDS SERIES GENERAL PURPOSE FLOW

SWITCHES IN HAZARDOUS LOCATIONS.

Version 2.0.1A

Thermal Dispersion

Flow Switch

TDS Series

Owner’s Manual

If for some reason your product must be returned for factory ser-

vice, contact Dwyer Inc. at (219)879-8000 to receive a Material

Return Authorization number (MRA), providing the following

information:

1. Part Number, Serial Number

2. Name and telephone number of someone who can answer

technical questions related to the product and its application.

3. Return Shipping Address

4. Brief Description of the Symptom

5. Brief Description of the Application

Once you have received a Material Return Authorization number,

ship the product prepaid in its original packing to:

Dwyer Instruments Inc.

PO Box 373

102 Indiana Hwy, 212

Michigan City, IN 46361

Please include the information about the malfunction with your

product. This information enables our service technicians to

process your repair order as quickly as possible.

Step One

WARNING

The rating for the relay is 120 VAC/60 VDC @ 1A. For CE

rated applications, the relay rating is 60 VAC/60 VDC @ 1A.

Dwyer’s Thermal Dispersion flow switches are not recom-

mended for use with electrically charged application liquids.

For most reliable operation, the liquid being measured may

need to be electrically grounded.

Step Two

SPECIFICATIONS

TDS _ _ 2

Sensor Material

1- PP

2- PVDF

Sensor Length

1- Short

2- Long

TDS Series Flow Switch

1,400

1,200

1,000

800

600

400

200

012 18 24 30 36

Electrical Loading Limits

Acceptable

Range

Unacceptable

Range

Max. Series Resistance (Ohms)

Supply Voltage (VDC)

100

0012 18 24 30 36

MaximumTemperature/Voltage

Derating @ Maximum Current

Acceptable

Range

Unacceptable

Range

Ambient Sensor Temperature (C¡)

Operating Voltage (VDC)

Set point range:

Factory set point:

Repeatability:

Response time:

Set point adjust.:

Viscosity range:

Supply voltage:

Consumption:

Contact type:

Contact rating:

Contact output:

Process temp.:

Electronics temp.:

Pressure:

Sensor rating:

Sensor material:

Cable jacket mat.:

Cable type:

Cable length:

Process mount:

Classification:

CE compliance:

.04 to 3 fps

(.012 to .91 mps)

.2 fps (.06 mps)

.5% of set point

1-10 seconds

Potentiometer

1-200 centipoise

12-36 VDC

70 mA maximum

(1) SPST relay

120 VAC/VDC @ 1A

(CE: 60 VAC/VDC @ 1A)

Selectable NO/NC

F: 32˚ to 140˚

C: 0˚ to 60˚

F: -40˚ to 140˚

C: -40˚ to 60˚

150 psi (10 bar) @ 25˚

C., derated @ 1.667

psi (.113 bar) per ˚C.

above 25˚ C.

NEMA 4X (IP65)

TDS1: PP-Ryton®

TDS2: PVDF Kynar®

TDS1: PP

TDS2: PFA Teflon®

4-conductor, #22 AWG

(shielded)

10' (3m)

3/4" NPT

General purpose

EN 50082-2 immunity

EN 55011 emission

EN 61010-1 safety

Common Specifications:

175

150

125

100

075

050

025

00000 20 40 60 80 100

Acceptable

Range

Unacceptable

Range

Temperature/Pressure Derating

Operating Pressure (psi)

Temperature (C¡)

PVDF PP

0.7"

(19mm)

2.8"(71mm)

2.1"(54mm)

4.5"(114mm)

3/4" NPT3/4" NPT

8’ Cable (2.5m)

1.3"(32mm)

0.7"

(19mm)

8’ Cable (2.5m)

3.0"(76mm)

0.7"

(19mm)

3/4" NPT3/4" NPT

Thermal Dispersion Ultrasonic Level Switch, LU10 Series

* all dimensions are Nominal

1000

100

0.1

0.01

.01 .04 .1 .2 1 3 10

1-1/2"

3/4"

1/2"

12" 10" 8"

TDS SeriesVolume vs Velocity

Flow Rate (gpm)

Velocity (fps)

Set Points:

The TDS liquid flow switch set point is factory calibrated to 0.2

fps. To convert feet/sec to GPM, please refer to the chart

below.

Step Three

INTRODUCTION

Technology:

The thermal dispersion flow switch measures liquid temperature to

determine changes in flow velocity. As fluid flows across the sensing

tips, the temperature is reduced proportionately as a function of the

flow rate. When a temperature or velocity shift reaches the user

defined set point, the switch changes state indicating the appropriate

flow condition (flow or no-flow).

Dwyer's sophisticated electronics convert the temperature shift into a

signal which indicates whether a flow or no-flow condition occurs.

Depending on how the sensor is wired, this signal may be wired for

normally open or normally closed circuits.

Dwyer's Thermal Dispersion flow switches have no moving parts to

clog or foul, making them suitable for a variety of applications,

including non-coating and non-scaling liquids. The TDS series

directly measure mass flow and can operate over a broad range of liq-

uids from 0.4 to 1.2 specific gravity, 1 to 200 cp.

Initialization Sequence for TDS series:

Powering up the TDS series is different in water and in air. When the

flow switch is powered up while submersed, the TDS series will

immediately indicate flow before switching to its correct state. When

the flow switch is powered up while in air, the TDS series will imme-

diately indicate no-flow before indicating its correct state. A time

delay may be used to eliminate this initialization sequence. Dwyer's

thermal dispersion relay controllers feature a 0 to 60 second time

delay for your convenience.

Step Four

INSTALLATION

When using any type of fitting, the orientation as well as the insertion

depth of the flow switch in the pipe is critical. See the diagram below

for the recommended orientation depth.

The TDS series flow switch when installed must always be in contact

with the liquid being measured. The flow switch feature a 3/4" NPT

threads which will allow it to be used with various types of fittings.

Be sure to check the insertion depth of the flow switch in the fitting

after it is installed. See the diagram below for the recommended inser-

tion depth.

WARNING

The flow switch tips have a thin plastic wall which may be dam-

aged if dropped or installed improperly.

The TDS series flow switch is designed for use in liquid. For best

results, avoid installing the TDS series where bubbles are present

or where the tips of the switch may be out of the liquid.

1/8 Pipe ID min.

Pipe ID

Acceptable

Insertion Range

Step Five

WIRING

Wiring to a Dwyer Controller:

TSP Series Controller

TDC Series Controller

(-)

(+)

INVERT +/-

INPUT 1

DELAY

GND

115 VAC

220 VAC

(S)

Green

Black

Shield - Not Used

White

Red

RELAY 1 RELAY 2

POWER INVERT INVERT DELAY

DELAY

ONOFF

LATCH

INPUT1 INPUT2A INPUT2B

Green

Red

White

Black

Not Used - Shield

Supply Voltage:

The supply voltage to the TDS series flow switch should never exceed

a maximum of 36 VDC. Use controllers or power supplies, with a

minimum output of 12 VDC or a maximum output of 36 VDC.

Required Cable Length:

Determine the length of cable required between the TDS series flow

switch and its point of termination. Allow enough slack to ensure the

easy installation, removal and/or maintenance of the sensor. The

cable length may be extended up to a maximum of 1000 feet, using a

well-insulated, 14 to 20 gauge shielded four conductor cable.

Wire Stripping:

Using a 10 gauge wire stripper, carefully remove the outer layer of

insulation from the last 1-1/4" of the sensor's cable. Unwrap and dis-

card the exposed foil shield from around the signal wires, leaving the

drain wire attached if desired. With a 20 gauge wire stripper, remove

the last 1/4" of the colored insulation from the signal wires.

Signal Output (Relay switching):

Allows the sensor to switch a small load on or off directly, using an

internal 1A relay [120 VAC/VDC or (CE: 60 VAC/VDC)]. The

NO/NC status is set by the polarity of the voltage feeding the red and

black wires. The green wire is the common for the relay and the white

wire is the NO or NC, depending on the polarity of red and black.

Normally Open Wiring:

Red

Black

Shield

Ground

24 VDC

Power Supply

Multimeter

(Continuity)

White

Green

Step Six

WIRING

[Flow Condition]

Sensor

(NO)

RED

GRN

SHLD

WHT

BLK

LOAD

LOAD OR

[+]

[-]

[Flow Condition]

Sensor

(NC)

BLK

GRN

SHLD

WHT

RED

LOAD

LOAD OR

[+]

[-]

[Flow Condition]

Sensor

(NO)

RED

GRN

SHLD

WHT

BLK

LOAD [AC Power]

[+]

[-]

[Flow Condition]

Sensor

(NC)

BLK

GRN

SHLD

WHT

RED

LOAD [AC Power]

[+]

[-]

Wiring the Relay Output:

The TDS series relay output can be wired as a dry contact to a VDC

or VAC power source. The TDS series does require 12 - 36 VDC

power to operate the sensor and switch the relay. All illustrations

below identify a Dry switch state as the normal position of the relay.

Switching a Normally Open DC Load:

The Red wire connects to Positive (+) of the power supply and the

Black wire connects to Negative (-). The LOAD can be attached to

either the Green or White wires. Complete the circuit by either con-

necting the Green to (+) VDC power or White to (-) VDC power (see

illustration below).

Switching a Normally Closed DC Load:

The Black wire connects to Positive (+) of the power supply and the

Red wire connects to Negative (-). The LOAD can be attached to

either the Green or White wires. Complete the circuit by either con-

necting the Green to (+) VDC power or White to (-) VDC power (see

illustration below).

Switching a Normally Open AC Load:

The Red wire connects to Positive (+) of the DC power supply and the

Black wire connects to Negative (-). The LOAD can be attached to

the Green wire and the Hot of the VAC power. Connect the White to

the Neutral of the VAC power (see illustration below).

Switching a Normally Closed AC Load:

The Black wire connects to Positive (+) of the DC power supply and

the Red wire connects to Negative (-). The LOAD can be attached to

the Green wire and the Hot of the VAC power. Connect the White to

the Neutral of the VAC power (see illustration below).

Step Seven

WIRING

Wiring as a P-Channel or N-Channel output:

The TDS series relay output can be substituted for either a P-Channel

(PNP, sourcing) output or a N-Channel (NPN, sinking) output.

Normally Open DC Load as a P-Channel Output:

To wire as a NO P-Channel output, follow the directions below. The

Red wire connects to Positive (+) of the power supply and the Black

wire connects to Negative (-). The Green wire is jumpered to the Red

wire while the White wire is connected to the LOAD. Jumper the

LOAD back to the Negative (-) to complete the circuit.

[Flow Condition]

Sensor

(NO)

RED

GRN

SHLD

WHT

BLK LOAD

[+]

[-]

[Flow Condition]

Sensor

(NC)

BLK

GRN

SHLD

WHT

RED LOAD

[+]

[-]

[Flow Condition]

Sensor

(NO)

RED

GRN

SHLD

WHT

BLK

LOAD [+]

[-]

[Flow Condition]

Sensor

(NC)

BLK

GRN

SHLD

WHT

RED

LOAD [+]

[-]

Normally Closed DC Load as a N-Channel Output:

To wire as a NC N-Channel output, follow the directions below. The

Black wire connects to Positive (+) of the power supply and the Red

wire connects to Negative (-). The White wire is jumpered to the Red

wire while the White wire is connected to the LOAD. Jumper the

LOAD back to the Positive (+) to complete the circuit.

Normally Open DC Load as a N-Channel Output:

To wire as a NO N-Channel output, follow the directions below. The

Red wire connects to Positive (+) of the power supply and the Black

wire connects to Negative (-). The White wire is jumpered to the

Black wire while the Green wire is connected to the LOAD. Jumper

the LOAD back to the Positive (+) to complete the circuit.

Normally Closed DC Load as a P-Channel Output:

To wire as a NC P-Channel output, follow the directions below. The

Black wire connects to Positive (+) of the power supply and the Red

wire connects to Negative (-). The Green wire is jumpered to the

Black wire while the White wire is connected to the LOAD. Jumper

the LOAD back to the Negative (-) to complete the circuit.

Step Eight

CALIBRATION

Set Points:

If the preset factory calibration is not adequate for your application,

follow the calibration steps listed below. Note: the switch's internal

LED will be on when the switch detects no-flow and will off when the

switch detects flow.

1. Install the fitting and flow switch as described in the Installation

section of this manual. Turn the flow switch and controller power

on and adjust the flow rate to the application setting. If the medi-

um to be sensed is likely to be subject to high temperature varia-

tions, the flow switch should be set at the highest normal temper-

ature likely to be encountered.

2. Locate the potentiometer knob at the top

of the flow switch. The red LED is visible

through the potentiometer. (If the LED is

on, slowly adjust the potentiometer coun-

terclockwise, with a small flat head

screwdriver until the LED turns off.) The

adjustment is a single turn 270° poten-

tiometer. The initial response time of the

flow switch after adjustment is 1 to 10

seconds. Adjust the potentiometer in slow

increments and wait for the response.

If the LED is off, slowly adjust the poten-

tiometer clockwise until the light turns on.

Then turn the potentiometer counterclock-

wise to bring the LED off at a reliable set-

ting. Remember, adjust the potentiometer in slow increments and

wait for the response.

3. Verify that the new calibration is correct by lowering the system

flow rate below the set point and check to see that the red LED

turns on. Then increase the flow rate above the set point and ver-

ify that the red LED turns off accordingly.

TDS Series

.04 fps 3 fps

0.2 fps

Potentiometer

Knob

Step Ten

This

Space

Left

Intentionally

Blank

Step Nine

MAINTENANCE

General:

The TDS series flow switch requires no periodic maintenance except

to clean off any deposits or scaling from the sensor tip as necessary.

It is the responsibility of the user to determine the appropriate main-

tenance schedule, based on the specific characteristics of the applica-

tion liquids.

Cleaning Procedure:

1. Power: Make Sure that all power to the sensor, controller and/or

power supply is completely disconnected.

2. Sensor Removal: Make sure that the flow is off and the pres-

sure is down prior to removing the TDS series flow switch.

Carefully, remove the sensor from the installation. Replace the

sensor with a 3/4” NPT plug to insure that liquid does not leak out

during this procedure. Do not re-install the flow switch if the

threads are damaged.

3. Cleaning the Sensor: Use a soft bristle brush and mild deter-

gent, carefully wash the TDS series flow switch. Do not use harsh

abrasives such as steel wool or sandpaper, which might damage

the surface sensor. Do not use incompatible solvents which may

damage the sensor's PP/Ryton or PVDF plastic body.

4. Sensor Installation: Follow the appropriate steps of installa-

tion as outlined in the installation section of this manual.

Testing the installation:

1. Power: Turn on power to the controller and/or power supply.

2. Immersing the switch: Immerse the sensing tip in its applica-

tion liquid, by filling the tank up to the switches point of actua-

tion. An alternate method of immersing the switch during prelim-

inary testing is to hold a cup filled with application liquid up to

the switch's tip.

3. Test: With the switch being fluctuated between wet and dry

states, the switch indicator light in the controller should turn on

and off. If the controller doesn't have an input indicator, use a volt-

meter or ammeter to ensure that the switch produces the correct

signal.

4. Point of actuation: Observe the point at which the rising or

falling fluid level causes the switch to change state, and adjust the

installation of the switch if necessary.

ООО “РусАвтоматизация” 454010 Челябинск, Гагарина 5,

русавтоматизация.рф

Россия, тел. 8-800-775-09-57 , +7(351)799-54-26,

тел./факс +7(351)211-64-57

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