Murphy Exhaust Pyrometers User Manual

P-9011B page 1 of 2

Models 10705146 (00000819)
and 10705147 (00000956)

■

Single or Dual Port Reading

■

2% Accuracy

■

Sealed Construction

■

Temperature Compensation

■

Easy to Read Scales

Description

The Single 10705147 (00000956) and Dual
10705146 (00000819) Port Pyrometers
monitor exhaust temperatures in all types of
engines. The Dual Port Pyrometer can mon­itor each bank of a V-type engine, allowing
you to compare readings at all times. Both
pyrometers feature an easy-to-read illumi­nated dial with scales in both Fahrenheit and
Celsius. They require no outside power
(except for dial lighting). Spring loaded
jewels and alloy pivots increase durability.
Murphy offers pyrometer accessories such
as thermocouples and wire lead assembly.

Application

Excessive exhaust temperature is a major
damaging factor to all engines. The best
way to monitor this temperature is with the
use of a pyrometer. Excessive exhaust tem­perature is caused by an upset fuel/air ratio
or more fuel in the engine than there is air to
support it. This condition can occur as a
result of over throttling, a dirty air cleaner,
different fuels, a malfunctioning fuel sys­tem, change of altitude, an out of tune
engine and many other causes. But whatever
the cause, a pyrometer indicates this condi­tion before serious damage occurs.

Suitable for stationary or mobile engines,
power units, agricultural and construction
equipment, as well as marine and trucking.

Features

■

Large sweep scales for maximum legibility.

■

Internal illumination for night use.

■

Accuracy: 2% full scale.

■

Sealed housing.

■

Ambient temperature compensation.

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Calibrated permanently at 2/3 scale.

■

Flush type mounting on any plane.

Benefits of Using a
Pyrometer

■

Longer engine life

■

Better fuel economy

■

Less lubrication oil dilution

■

Lubrication oil stays clean much longer

■

Exhaust emissions drop to a minimum

■

Malfunctions indicated before
excessive damage occurs

Specifications

Dial Scale

Single: 300 to 1300°F (150 to 700°C)*
Dual: 300 to 1200°F (150 to 649°C)*

*Celsius only dials available.

Dial Sweep (both models): 100°.

Accuracy: Full scale 2%.

Illumination

Internal 12 or 24 VDC.

Bezel: Polished stainless steel.

†

†

Black bezel available. Special order.

Case: PVC.

Pointer(s): Fire Orange.

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

10705146

10705147

P-9011B

Revised 10-05

Catalog Section 10

Exhaust Pyrometers

P-9011B page 2 of 2

AccessoriesDimensions

10705146 (00000819)

10705147 (00000956)

00000818

Thermocouple

Thermocouples 00000818 and 00003488 can
mount in the engine manifold or in 2 to
3-1/2 in. (51 to 89 mm) diameter exhaust
ports. In turbo-charged engines, a thermocou­ple mounts between the engine and the turbo.
Thermocouple 00000818 is a grounded, type
K (Chromel Alumel). Thermocouple
00003488 is ungrounded type K (Chromel
Alumel).

Thermocouple Specifications

Element "K": type (NiCr/Ni) solid wire.
Hot Junction: fusion welded.
Protecting Tube: inconel for no carbon

absorption, end closed by heliarc melt down.

Wire Insulation: Q-glass with stainless

steel overbraid.

Adaptors:

• 3/8 NPT (00003578) standard

• 1/8 NPT (00003577)

• 1/4 NPT (00003450)

• 1/2 NPT (00003579)

Wire Lead Assembly 00000817 is a 14 ft. (4.27

m) extension with mating plug connections for
the 00000818 and 00003488 thermocouples.
The wire is PVC covered, non-shielded, 18
AWG (1.0 mm

2

), with heat shrinkable sleeve
provided for insulating terminals after installa­tion. Extension up to 100 ft. (30.48 m) can be
made with 18 AWG (1.0 mm

2

) or larger copper

wire at the gage head.

00000817
Wire Lead Assembly

How to Order

Specify part number. Example: 10705146 (00000819)

3-1/2 in.

Accessories (order separately)

00000817 14 ft. (4.27 m) Wire Lead Assembly.
00000818 Thermocouple, grounded, Type K, 3/8 NPT.*
00003488 Thermocouple, ungrounded, Type K, 1/4 NPT.*

*1/8 NPT, 1/4 NPT and 1/2 NPT adaptors available.

Pyrometer

10705146 = Dual
10705147 = Single

INDUSTRIAL PANEL DIVISION

P.O. Box 470248
Tulsa, Oklahoma 74147 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

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.

FW Murphy

P.O. Box 470248
Tulsa, Oklahoma 74147 USA
[phone] fax [phone]
e-mail [e-mail]

www.fwmurphy.com

Printed in U.S.A. 0990058M

(89 mm)

1-45/64 in.

(43 mm)

3-1/8 in. ± .010
(79 mm ± .254)

3-1/2 in.
(89 mm)

1-45/64 in.

(43 mm)

3/4 in.

(19 mm)

3-1/8 in. ± .010
(79 mm ± .254)

3/4 in.

(19 mm)