Marsh Bimetal Thermometers Catalog Page

Temperature

SPECIFICATIONS

AccurAcy

±1% of span throughout entire

range for 2” immersion in liquids,
4” in gases

cAse sizes

2”, 3”, and 5” sizes

cAse MAteriAL

304 Stainless steel

steM

21⁄2”, 4”, 6”, 9”, 12”, 15”, 18” &
24” Stainless Steel; 1⁄4” diameter

connections

1

⁄4” NPT: CB–Center Back

connection (2” case only)

1

⁄2” NPT: CB–Center Back connec-

tion or AJ–Adjustable connection
(3” & 5”)

diALs

Dual scale in degrees Celsius and
Fahrenheit

WindoW

Glass, hermetically sealed

BIMETAL THERMOMETERS

• External Reset Feature for Field Recalibration (3” & 5”) • 2”, 3” and 5” Dials

• 9 Dual Scale Ranges to 1,000°F (525°C) • Stem Lengths to 24”

• Hermetically Sealed Case Design • 1% Full Scale Accuracy

Marsh Instruments Bimetal Thermometers combine the benefits of economy and reliability for local mounted temperature
indication in the dual scale ranges from -50° to 1,000°F (-40° to 525°C). Additional advantages offered by the Series “L”
Bimetal Thermometers include an easy-to-read dual scale, fast speed of response, and accurate temperature indication. The
hermetically sealed and ruggedly built case is resistant to shock, vibration, dust and moisture. Corrosion resistance to most
chemicals is provided by the all welded type 304 Stainless Steel construction. The extremely responsive bimetal sensing
element provides an accuracy to within ±1% of scale. An external adjustment screw on the back of the 3” and 5” case
provides convenient reset and field recalibration. Built-in over range protection is a standard feature.

Typical applications include process, offshore, power, chemical industries, HVAC and OEM applications.

STANDARD RANGES & PART NUMBERS

TYPE BIMETAL THERMOMETERS

Size 2”
Connection
Mounting CB CB CB CB CB
Stem Length 2

-50° to 120°F /-40° to 50°C L11101 L11201 L11301 L11401 L11501

-40° to 160°F /-40° to 70°C L11102 L11202 L11302 L11402 L11502
0° to 200°F /-20° to 90°C L11104 L11204 L11304 L11404 L11504
0° to 250°F /-20° to 120°C L11105 L11205 L11305 L11405 L11505
50° to 300°F / 10° to 150°C L11106 L11206 L11306 L11406 L11506
50° to 400°F / 10° to 200°C L11107 L11207 L11307 L11407 L11507
50° to 550°F / 10° to 300°C L11108 L11208 L11308 L11408 L11508
150° to 750°F / 70° to 400°C L11110 L11210 L11310 L11410 L11510
200° to 1000°F / 100° to 525°C L11111 L11211 L11311 L11411 L11511

Size 3”
Connection
Mounting CB CB CB CB CB CB
Stem Length 21⁄2” 4” 6” 9” 12” 15”

-50° to 120°F /-40° to 50°C L31101 L31201 L31301 L31401 L31501 L31601

-40° to 160°F /-40° to 70°C L31102 L31202 L31302 L31402 L31502 L31602
0° to 200°F /-20° to 90°C L31104 L31204 L31304 L31404 L31504 L31604
0° to 250°F /-20° to 120°C L31105 L31205 L31305 L31405 L31505 L31605
50° to 300°F / 10° to 150°C L31106 L31206 L31306 L31406 L31506 L31606
50° to 400°F / 10° to 200°C L31107 L31207 L31307 L31407 L31507 L31607
50° to 550°F / 10° to 300°C L31108 L31208 L31308 L31408 L31508 L31608
150° to 750°F / 70° to 400°C L31110 L31210 L31310 L31410 L31510 L31610
200° to 1000°F / 100° to 525°C L31111 L31211 L31311 L31411 L31511 L31611

1

⁄4 NPT

1

⁄2” 4” 6” 9” 12”

1

⁄2 NPT

62

Size 3” Adjustable Angle

Connection
–50° to 120°F/-40° to 50°C L33101 L33201 L33301 L33401 L33501 L33601
–40° to 160°F/-40° to 70°C L33102 L33202 L33302 L33402 L33502 L33602
0° to 200°F/-20° to 90°C L33104 L33204 L33304 L33404 L33504 L33604
0° to 250°F/-20° to 120°C L33105 L33205 L33305 L33405 L33505 L33605
50° to 300°F/ 10° to 150°C L33106 L33206 L33306 L33406 L33506 L33606
50° to 400°F/ 10° to 200°C L33107 L33207 L33307 L33407 L33507 L33607
50° to 550°F/ 10° to 300°C L33108 L33208 L33308 L33408 L33508 L33608
150° to 750°F/ 70° to 400°C L33110 L33210 L33310 L33410 L33510 L33610
200° to 1000°F/ 100° to 525°C L33111 L33211 L33311 L33411 L33511 L33611

1

⁄2 NPT

STANDARD RANGES & PART NUMBERS

3.88

2.5 ±.03

.25 OD

TYPE BIMETAL THERMOMETERS

Size 5”
Connection
Mounting CB CB CB CB CB CB CB CB
Stem Length 2
–50° to 120°F/-40° to 50°C L51101 L51201 L51301 L51401 L51501 L51601 L51701 L51801
–40° to 160°F/-40° to 70°C L51102 L51202 L51302 L51402 L51502 L51602 L51702 L51802
0° to 200°F/-20° to 90°C L51104 L51204 L51304 L51404 L51504 L51604 L51704 L51804
0° to 250°F/-20° to 120°C L51105 L51205 L51305 L51405 L51505 L51605 L51705 L51805
50° to 300°F/ 10° to 150°C L51106 L51206 L51306 L51406 L51506 L51606 L51706 L51806
50° to 400°F/ 10° to 200°C L51107 L51207 L51307 L51407 L51507 L51607 L51707 L51807
50° to 550°F/ 10° to 300°C L51108 L51208 L51308 L51408 L51508 L51608 L51708 L51808
150° to 750°F/ 70° to 400°C L51110 L51210 L51310 L51410 L51510 L51610 L51710 L51810
200° to 1000°F/ 100° to 525°C L51111 L51211 L51311 L51411 L51511 L51611 L51711 L51811

1

⁄2 NPT

1

⁄2” 4” 6” 9” 12” 15” 18” 24”

Temperature

Size 5” Adjustable Angle

1

Connection

⁄2 NPT

Mounting AJ AJ AJ AJ AJ AJ AJ AJ

1

Stem Length 2

⁄2” 4” 6” 9” 12” 15” 18” 24”

–50° to 120°F/-40° to 50°C L53101 L53201 L53301 L53401 L53501 L53601 L53701 L53801
–40° to 160°F/-40° to 70°C L53102 L53202 L53302 L53402 L53502 L53602 L53702 L53802
0° to 200°F/-20° to 90°C L53104 L53204 L53304 L53404 L53504 L53604 L53704 L53804
0° to 250°F/-20° to 120°C L53105 L53205 L53305 L53405 L53505 L53605 L53705 L53805
50° to 300°F/ 10° to 150°C L53106 L53206 L53306 L53406 L53506 L53606 L53706 L53806
50° to 400°F/ 10° to 200°C L53107 L53207 L53307 L53407 L53507 L53607 L53707 L53807
50° to 550°F/ 10° to 300°C L53108 L53208 L53308 L53408 L53508 L53608 L53708 L53808
150° to 750°F/ 70° to 400°C L53110 L53210 L53310 L53410 L53510 L53610 L53710 L53810
200° to 1000°F/ 100° to 525°C L53111 L53211 L53311 L53411 L53511 L53611 L53711 L53811

L11XXX L31XXX

BLACK POINTER

DIAL, SILVER WITH
BLACK CHARACTERS

.438

.562

2.34

L

STEM LENGTH

1/4 NPT

9/16 HEX

BULB

.25 DIA

BLACK POINTER

DIAL, SILVER WITH
BLACK CHARACTERS

L33XXX L51XXX

2.39

[60.7]

.25

[6.4]

[98.5]

1/2 NPT

STEM LENGTH

BLACK POINTER

DIAL, WHITE WITH BLACK
CHARACTERS EXCEPT ORANGE
ZONE FROM 250?F TO 300?F
OUTSIDE SCALE & CHARACTERS

5.03

STEM LENGTH

.31

.67

BULB

1/2 NPT

7/8 HEX

RECALIBRATOR

DIAL, WHITE WITH BLACK
CHARACTERS THRU 300?F
ANODIZED ALUMINUM WITH
BLACK CHARACTERS ABOVE
300˚F

BLACK POINTER

DIAL, WHITE WITH BLACK CHARACTERS

.87

[22.0]

3.29

[83.5]

RECALIBRATOR

BLACK POINTER

.75

3.28

.32

L53XXX

5.03

RECALIBRATOR

L

STEM LENGTH

.25 OD

BULB

1/2 NPT

7/8 HEX

RECALIBRATOR

.67

1/2 NPT

STEM LENGTH

ALL DIMENSIONS ARE NOMINAL

63