Daughtridge Sales Co., Inc.

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Model ADJ 3" & 5"
Adjustable Angle
Bimetallic Thermometers

STEM DIAMETER: .25” standard up to 42”
stem; .375” standard over 42” stem
CONNECTION: 1/2-14 NPT
EXTERNAL RESET: Easy to calibrate by
inserting 1/16” hex wrench into reset
opening
CONSTRUCTION: 304 stainless steel
external parts and welded construction;
corrosion resistant to most chemicals
HERMETIC SEAL: Per ASME B40.3,
dustproof and leakproof
HARNESS: All stainless steel brackets
with screws that loosen to allow 360º
rotation of head and 180º adjustment
of stem position
BELLOWS: Heavy-duty flexible stainless
steel, hermetically sealed at case and
connection; protects mechanism that
transfers temperature
DIAL: True anti-parallax dial, easy to
read from any angle, minimizes reading
errors; anodized aluminum with large
black numbers and graduations
LENS: Glass
BIMETALLIC COIL: Helix coil is silicone
coated on ranges below 500ºF for
vibration dampening and to maximize
heat transfer and response time
ACCURACY: ±1% full span per ASME
B40.3 Grade A; adjustment of the angle
between case and stem may affect
accuracy up to 0.5% of span
(ASME B40.3)
OVER TEMPERATURE LIMITS: Up to
250ºF, 100%; 250º to 550ºF, 50%;
550º to 1000ºF, continuous use up to
800ºF, intermittent use over 800ºF

PRODUCT DATA SHEETS

Model ADJ

Model BAC 3" & 5"
Back Connected
Bimetallic Thermometers

STEM DIAMETER: .25” standard up to 42”
stem; .375” standard over 42” stem
CONNECTION: 1/2-14 NPT
EXTERNAL RESET: Easy to calibrate by
inserting 1/16” hex wrench into reset
opening
CONSTRUCTION: 304 stainless steel
external parts, welded construction,
corrosion resistant to most chemicals
HERMETIC SEAL: Per ASME B40.3,
dustproof and leakproof
DIAL: True anti-parallax dial, easy to
read from any angle, minimizes reading
errors; anodized aluminum with large
black numbers and graduations
LENS: Glass
BIMETALLIC COIL: Helix coil is
silicone coated on ranges below 500ºF
for vibration dampening and to maximize
heat transfer and response time
ACCURACY: ±1% full span per ASME
B40.3 Grade A, when using maximum
or minimum temperature indicator,
accurate to within 1-1/2% full span
OVER TEMPERATURE LIMITS: Up to
250ºF, 100%; 250º to 550ºF, 50%;
550º to 1000ºF, continuous use up to
800ºF, intermittent use over 800ºF

PRODUCT DATA SHEETS

Model BAC

Model BOTC 3" & 5"
Bottom Connected
Bimetallic Thermometers

STEM DIAMETER: .25” standard up to 42”
stem; .375” standard over 42” stem
CONNECTION: 1/2-14 NPT
EXTERNAL RESET: Easy to calibrate by
inserting hex wrench into reset opening
CONSTRUCTION: 304 stainless steel
external parts, welded construction;
corrosion resistant to most chemicals
HERMETIC SEAL: Per ASME B40.3,
dustproof and leakproof
DIAL: True anti-parallax dial, easy to
read from any angle, minimizes reading
errors; anodized aluminum with large
black numbers and graduations
LENS: Glass
BIMETALLIC COIL: Helix coil is
silicone coated on ranges below 500ºF
for vibration dampening and to maximize
heat transfer and response time
ACCURACY: ±1% full span per ASME
B40.3 Grade A
OVER TEMPERATURE LIMITS: Up to
250ºF, 100%; 250º to 550ºF, 50%;
550º to 1000ºF, continuous use up to
800ºF, intermittent use over 800ºF

PRODUCT DATA SHEETS

Model BOTC

Model POC 1" Testing
& Spot Checking
Thermometers

STEM LENGTH: 5” (127 mm)
STEM DIAMETER: .15”
CONNECTION: Recal nut is standard
EXTERNAL RESET: Friction nut design
for easy calibration
CONSTRUCTION: 304 stainless steel
external parts, welded construction;
corrosion resistant to most chemicals
HERMETIC SEAL: Per ASME B40.3,
dustproof and leakproof
DIAL: Anodized aluminum with large
black numbers and graduations
LENS: Polycarbonate lens is standard
BIMETALLIC COIL: Helix coil is
silicone coated on ranges below 500ºF
for vibration dampening and to maximize
heat transfer and response time
ACCURACY: ±1% full span per ASME
B40.3 Grade A
OVER TEMPERATURE LIMITS: Up to
250ºF, 100%; 250º to 550ºF, 50%;
550º to 1000ºF, continuous use up to 800ºF, intermittent use over 800ºF
POCKET SHEATH: Standard
STANDARD RANGES:
0-250°F & 50-550°F

PRODUCT DATA SHEETS

Model POC

5" Industrial Glass Tube
Themometers

SCALE LENGTH: 5”
CASE: Drawn steel case shell, finished in
white baked enamel; case fits directly on
the metal bulb shield forming an integral
assembly
INDICATION: Magnifying glass tube
filled with red liquid; black temperature
scale printed on white case shell
BULB SHIELD: Steel zinc plated or brass
T-571, Low connection only, scale may be
oriented by rotation of the bulb within its
shield; insertion length is 1-3/8”
CONNECTION:
T-571: 1/2-14 NPT (LM);
T-572: 1/2-14 NPT (LBM)

PRODUCT DATA SHEETS

T571/T572

Model BACO 2"
Back Connected
Bimetallic Thermometers

STEM DIAMETER: .25” standard up to 42”
stem
CONNECTION: 1/4-18 NPT
EXTERNAL RESET: Easy to calibrate by
loosening the socket head screw (above
hex connecting nut) with 5/64” hex
wrench
CONSTRUCTION: 304 stainless steel
external parts, welded construction;
corrosion resistant to most chemicals
HERMETIC SEAL: Per ASME B40.3,
dustproof and leakproof
DIAL: Anodized aluminum with large
black numbers and graduations
LENS: Glass
BIMETALLIC COIL: Helix coil is
silicone coated on ranges below 500ºF
for vibration dampening and to maximize
heat transfer and response time
ACCURACY: ±1% full span per ASME
B40.3 Grade A
OVER TEMPERATURE LIMITS: Up to
250ºF, 100%; 250º to 550ºF, 50%;
550º to 1000ºF, continuous use up to
800ºF, intermittent use over 800ºF

PRODUCT DATA SHEETS

Model BACO

Series DT-8300 Digital Thermometers

RANGES: Low: -50ºF to 450ºF (-50ºC to 250ºC); High: 400ºF to 1500ºF (200ºC to 800ºC)
INPUT: Type K thermocouple; supplied by U.S. Gauge distributor or customer, Type J and E
inputs also available
ACCURACY:
Basic Accuracy: ±1% of full scale (excluding T/C error)
Conformance (to ANSI MC95-1): Low Range: ±2.2ºF (1.2ºC) from –40ºF to 450ºF
High Range: ±2.7ºF (1.5ºC) from 400ºF to 1500ºF
Cold Junction Compensation And Zero Drift: .08 degrees (F or C)
Span Drift: .008% of reading/ºF (0.015% of reading/ºC)
Resolution: 1ºF (1ºC)
CALIBRATION ADJUSTMENT: Screw adjust permits calibration to within 1ºF (1ºC) at any
desired point
OPERATING TEMPERATURES: -13ºF to 160ºF (-25ºC to 72ºC), depending on power supply
SELF-POWERED VERSION: Battery, 8 Size AA: 1-1/2 years continuous operation, typical.
Note: Ambient temperatures above 100ºF may shorten battery life
EXTERNALLY-POWERED VERSION: Supply Voltage: 6 to 28 VDC (unregulated)
Supply Current: 0 to 2.5 mA
INTRINSICALLY SAFE (FM APPROVED): Battery powered models are intrinsically safe,
for Class I, II, and III, Division 1, Groups A, B, C, D, E, and G hazardous locations using
U.S. Gauge battery board (accepts 8 AA batteries, not included) P/N 156834 and when
installed in accordance with U.S. Gauge instructions AU-3459-F
External powered models are entity approved for safe operation in Class I, II, and III,
Division 1, Groups A, B, C, D, E, and G hazardous locations in accordance with U.S. Gauge
instructions AU-3459-F
V max = 18.7 V, I max = 150 mA, capacitance equals 0.4 µF, Li = 0.0 mH
External powered models are also entity approved for safe operation in Class I, II, and III,
Division 1, Groups C, D, E, and G hazardous locations in accordance with U.S. Gauge
instructions AU-3459-F
V max = 26.7 V, I max = 150 mA, capacitance equals 0.4 µF, Li = 0.0 mH
DISPLAY: 3-1/2 digit liquid crystal (LCD) 0.7” high numerals; update rate once per second;
display blanks out for low power condition and displays large, negative number when
thermocouple or extension wires are open
HOUSING: NEMA 4X design; 1/4 DIN; 302 stainless steel with one piece, VALOX front
face/bezel and neoprene gasket; environmentally sealed with one-way valve for
battery venting
CONNECTIONS: 1/2-14 NPT stainless steel half couple seal welded to case

PRODUCT DATA SHEETS

DT-8300 Digital

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