Murphy TDX6 User Manual

TDX-9106B

Revised 11-02

Catalog Section 10

(00-02-0049)

Temperature Scanner/Pyrometer SWICHGAGE

®

• Scans 6 Channels

• Adjustable Trip Points

• “J” or “K” Thermocouples

• Powered by CD Ignition,

24 VDC, or 120 VAC

• Rated for Class I, Division 2,

Group D Hazardous Areas

• Start-up Time Delay

• Easy to Read Digital Display

*

When used with approved ignition.
Contact Murphy for details.

**

When used with

power

requirements

described below.

Description

The TDX6 is an advanced design 6-point temperature scanner and
pyrometer. It continually scans up to six thermocouples and
sequentially displays the thermocouple number and its reading.
Each sensor input has a field settable trip point for alarm, shut­down or control. A read/scan
selector allows the operator to set
and view each trip point. With the
selector in the scan mode, a
“thermocouple read” push button
provides a means to manually
toggle through the six channels
and to lock in on a specific chan­nel. Normal scanning will resume
approximately three seconds after releasing the push button. All
trip points are continually armed and active during the scanning
process.

Type “J” or “K”, grounded

†

or ungrounded thermocouples are

accommodated. Other types are available upon request.
The TDX6 can interface with other Murphy SELECTRONIC

®

TATTLETALE®annunciators and Micro-controllers. It is rated for
Class I, Division 2, Group D, hazardous areas*and is available
for operation from CD ignition, 120 VAC, or 24 VDC

.

Applications

• Gas Compressor • Process Temperatures

Suction/Discharge Temp.

• Generators

• Engine/Compressor Jacket • Pumps

Water Temperature

• Engine Exhaust Temperature

Features

■

Monitors six (6) input sensors

■

Accepts type “J” or “K” thermocouples grounded†or ungrounded

■

Field adjustable trip points

■

LCD display in either °F or °C (specify)

■

One thermocouple maybe selected for continuous display

■

CD ignition, 24 VDC, or 120 VAC powered

■

No special training or programming required

■

Scans all 6 sensors in 30 seconds

Specifications

Power Requirements (Operating Voltages): 120 VAC or

80-250 VDC, CD ignition or 24 VDC.

Outputs:

Models TDX6-A and TDX6-C:

Six (6) isolated Silicon Controlled
Rectifier (S.C.R.) outputs; 0.5 A @ 250 VDC; switches on
(applies ground) above trip point and switches off (removes
ground) when power is switched off.

Models TDX6-B and TDX6-D:

Six (6) isolated Field-Effect
Transistor (F.E.T.) outputs; 0.1 A @ 250 VDC; switches on
(applies ground) above trip point and switches off (removes
ground) below trip point.

Operating Temperature: -4 to 158°F (-20 to 70°C).

Storage Temperature: -40 to 300°F (-40 to 150°C).

Case: ABS 1/4 DIN (90 x 90 mm).

Scanning Speed: Complete scan in 30 seconds.

Reset Differential: F.E.T. models:

Decreases 3 Degrees (°F or

°C)

. S.C.R. models:

Turn input power off to reset.

Display Update Time: Updates temperature every 0.3 seconds.

Start-up Time Delay: Unit is locked out for 10 seconds after

ignition voltage is sensed.

Ambient Cold Junction Compensation Range:

2°F from 32°F to 122°F (1°C from 0°C to 50°C).

Measurement Range: Monitor Range 0-1999°F or °C (specify °F

or °C in part number).

Accuracy:

With J-type thermocouple:

from 50-150°F (10-66°C) +3°F (+2°C),

from 150-1200°F (66-649°C) ±1.0% of reading.

With K-type thermocouple:

from 400-2000°F (204-1076°C)

±1.0% of reading.

Trip Point Accuracy: ±3°F (±2°C) of reading.

Trip Point Adjustment Range: 0-1999 Degrees.

Open Thermocouple Input: A number 1 appears in the display

to the right of the channel number and the trip point operates.

Approved

**

Approved

*

Model TDX6

†

Using grounded thermocouples introduces the risk of odd currents or voltages

being imposed on the thermocouple signal which can affect the accuracy of the
reading. This is an inherent problem of grounded thermocouples, the reason why
we prefer ungrounded thermocouples.

Easy to Read

Digital Display

Thermocouple

Read

Trip Point

Read/Scan

Trip Point

Adjustment

TDX-9106B page 2 of 2

How to Order

To order the TDX6 use the part number designation diagram below.

Display

F = Fahrenheit
C = Celsius

Models

TDX6 = Square hole mounting
TDXF6 = Round hole mounting

Power Supply/Output

A = CD ignition, 80-250 VDC Positive or Negative Ground or

120 VAC 50-60 Hz Inputs—S.C.R. Outputs.

†

B = CD ignition, 80-250 VDC Positive or Negative Ground

or 120 VAC 50-60 Hz Inputs—F.E.T. Pulsed Outputs.

††

C = 24 VDC Inputs—S.C.R. Outputs.

†

D = 24 VDC Inputs—F.E.T. Pulsed Outputs.

††

†

For use with electromechanical TATTLETALE

®

annunciators.

††

For use with SELECTRONIC

®

or similar solid-state annunciators.

Thermocouple Type

J = Type J
K = Type K

Dimensions Typical Wiring Diagram

TDX6 Interface Capabilities

Model

Power Source Rating

LCDT CD Ign., 120 VAC, 12/24 VDC Cl.I, Div.1, Gr.D, Haz. areas*

S1501 120 VAC or 12/24 VDC Cl.I, Div.1, Gr.D, Haz. areas*

MARK II CD Ignition, pos. or neg. grnd Cl.I, Div.2, Gr.D, Haz. areas*

TATTLETALE

®

CD Ign., 120 VAC, 12/24 VDC Non-Hazardous areas

PLC’s, various non-Murphy annunciators–contact factory.

*Note: An isolation barrier is needed between the TDX6 and an Annunciator rated

for Class I, Division 1, Group D, Hazardous Areas.

**Note: When used with approved ignition. Contact Murphy for details.

Shipping Weight: 2 lb. (0.91 kg).

Shipping Dimensions: 5-1/2 x 9 x 6 in. (140 x 229 x 152 mm).

TDX6

– A – F – J

Warranty

A limited warranty on materials and workmanship is given with this FW
Murphy product. A copy of the warranty may be viewed or printed by going to
www.fwmurphy.com/support/warranty.htm

CONTROL SYSTEMS & SERVICES DIVISION

P.O. Box 1819; Rosenberg, Texas 77471; USA
[phone] fax [phone]

e-mail [e-mail]

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
[phone] fax [phone]
Villahermosa Office [phone]
e-mail [e-mail]
www.murphymex.com.mx

FRANK W. MURPHY, LTD.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
[phone] fax [phone]
e-mail [e-mail]
www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West
Palmdale, California 93551-1442; USA
[phone] fax [phone]
e-mail [e-mail]
www.murphyswitch.com

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

MACQUARRIE CORPORATION

1620 Hume Highway
Campbellfield, Vic 3061; Australia
[phone] fax [phone]

e-mail [e-mail]

FW Murphy

P.O. Box 470248
Tulsa, Oklahoma 74147 USA
[phone]

fax [phone]
e-mail [e-mail]

www.fwmurphy.com

R

E

G

I

S

T

E

R

E

D

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

Printed in U.S.A. 0591127

Side View

4-5/8 in.

(117 mm)

Mounting Clamp

4-3/8 in.

(111 mm)

6-3/4 in.

(171 mm)

clearance for plug

Square Hole Mounting

3-9/16 in.

(90 mm)

3-9/16 in.

(90 mm)

3-3/4 in.
(95 mm)

Round Hole Mounting (TDXF6)

Mounting Hole
4-3/4 in. (121 mm)
diameter

120

1/4 in. (6 mm) dia.
holes (3 places)

Back View

3-1/2 in.
(89 mm)

3-3/4 in.
(95 mm)

120

120

-

-

-

-

-

-

TC 1

TC 2

TC 3

TC 4

TC 5

TC 6

3

PWR

INPUT

TDX6

+

-

TP 1
COM
TP 2

TP 3
COM

TP 4

TP 5
COM

TP 6
COM

5

Load

+

­+
+

-

TATTLETALE etc.
+
+

­+

-

+

MARK II,

S1400,

INPUT

1

2

TC 1

TC 2

TC 3

TC 4

TC 5

TC 6

NOTES:

1

Remove input jumper when the thermocouple is

POWER INPUT

JUMPER

+

+

+

+

+

+

connected to input.

2

Thermocouple Input

3

Power input 120 VAC, 80-250 VDC, CD ignition or 24 VDC,
positive or negative ground.

4

Interfaced components must meet area
classification requirements.

5

When using the TDX6 with inductive loads, we recommend
installing a suppression diode across all coils.

4

LCDT,

®