TDX-9106B
Revised 11-02
Catalog Section 10
(00-02-0049)
®
Temperature Scanner/Pyrometer SWICHGAGE
• Scans 6 Channels
• Adjustable Trip Points
Model TDX6
• “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
Approved*
• Easy to Read Digital Display
Approved**
*
When used with approved ignition.
Contact Murphy for details.
** When used with power requirements
described below.
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Scans all 6 sensors in 30 seconds
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, shut-
down or control. A read/scan
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.
Easy to Read
selector allows the operator to set
Digital Display
and view each trip point. With the
Thermocouple
selector in the scan mode, a
Read
“thermocouple read” push button
provides a means to manually
Trip Point
Read/Scan
toggle through the six channels
and to lock in on a specific chan-
nel. Normal scanning will resume
approximately three seconds after releasing the push button. All
trip points are continually armed and active during the scanning
process.
Trip Point
Adjustment
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).
Type “J” or “K”, grounded† or ungrounded thermocouples are
accommodated. Other types are available upon request.
Scanning Speed: Complete scan in 30 seconds.
The TDX6 can interface with other Murphy SELECTRONIC®
Reset Differential: F.E.T. models: Decreases 3 Degrees (°F or
TATTLETALE® annunciators and Micro-controllers. It is rated for
°C). S.C.R. models: Turn input power off to reset.
*
Class I, Division 2, Group D, hazardous areas and is available
for operation from CD ignition, 120 VAC, or 24 VDC.
Display Update Time: Updates temperature every 0.3 seconds.
Start-up Time Delay: Unit is locked out for 10 seconds after
Applications
• Gas Compressor
Suction/Discharge Temp.
• Engine/Compressor Jacket
Water Temperature
ignition voltage is sensed.
• Process Temperatures
• Generators
Ambient Cold Junction Compensation Range:
2°F from 32°F to 122°F (1°C from 0°C to 50°C).
• Pumps
Measurement Range: Monitor Range 0-1999°F or °C (specify °F
• Engine Exhaust Temperature
or °C in part number).
Accuracy:
Features
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.
■
Monitors six (6) input sensors
■
Accepts type “J” or “K” thermocouples grounded†or ungrounded
Field adjustable trip points
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LCD display in either °F or °C (specify)
Trip Point Accuracy: 3°F ( 2°C) of reading.
One thermocouple maybe selected for continuous display
CD ignition, 24 VDC, or 120 VAC powered
No special training or programming required
Trip Point Adjustment Range: 0-1999 Degrees.
Open Thermocouple Input: A number 1 appears in the display
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†
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.
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