
hot point® Dry Block
Probe Calibrator
CL900A
CL900A Calibrator, shown
with HH-21A, handheld meter
and handle thermocouple
probe (both not included).
Visit omega.com.
CL900A/950A Series
230 Vac
†
Optional
U User Selectable °C or
°F Display
U Calibrates Thermistors,
Thermocouples and
RTDs in Seconds
U Highly Accurate ±0.8°C
(±1.5°F) and Exceptional
Stability ±0.2°C (±0.3°F)
for Precision Calibrations
U Completely Portable for
Factory, Laboratory and
Instrument Shops
U Wide Temperature Range
Ambient 22 to 482°C
(Ambient 40 to 900°F);
Covers Most Industrial
Applications
model only
U CE Marked Models
U RS232 Standard
TM
U Companion ice point
Reference Cell Available
Model TRCIII-A
OMEGA s hot point® calibrator is
part of a new family of calibrators
which allows calibration of
thermocouple and RTD probes
quickly and easily with an accuracy
to ±0.8°C (±1.5°F). An integral RTD
sensor assures high measurement
accuracy and repeatability. A
built-in microprocessor-based
PID digital controller assures
exceptional stability. Setpoint and
actual temperature are displayed
simultaneously. Temperature can
be set in 1 degree increments from
ambient 22 to 482°C (ambient
40 to 900°F).
The CL900A calibrator accepts a
variety of optional inserts which are
available in 101.6 mm (4") and
152 mm (6") depths, and probe
diameters from 1⁄8 to 3⁄8". An undrilled
insert is also available. The CL900A
comes complete with a 152 mm
(6") deep insert well for 1⁄4" diameter
probes, and insert removal tongs.
Additional inserts can be ordered
separately as required for other
diameter probes. 152 mm (6") well
depth inserts are used for probes
178 mm (7") and longer. 101.6 mm
(4") well depth inserts are used for
probes 127 mm (5") and longer.
The CL950A has a fixed thermal
well with 1⁄16, 1⁄8, 3⁄16 and 1⁄4" diameter
holes. The CL950A-M has metric
holes (2, 3, 4.5 and two 6 mm
diameter holes).
†
Refer to footnote on next page for NIST
calibration ordering information.
Specifications
(All specifications are based on the test
probes being in contact with the bottom
of the test well)
Temperature Range: Ambient 22 to
482°C (Ambient 40 to 900°F)
Operating Ambient Temperature
Range: 5 to 38°C (40 to 100°F)
Accuracy: (1° resolution)
CL900A with 152 mm (6") Test Well
Inserts: ±0.8°C (±1.5°F)
CL900A with 101.6 mm (4")
Test Well Inserts: ±1.7°C (±3°F)
CL950A: ±0.8°C (±1.5°F)
Control Stability: ±0.15°C (±0.3°F)
K-21

Temperature Uniformity (within
the Bottom 25 mm/1" of the Test Well):
CL900A with 152 mm (6") Test Well
Inserts: ±0.3%rdg
CL900A with 101.6 mm (4")
Test Well Inserts: ±0.4% rdg
CL950A: ± 0.3% rdg
Max Probe Immersion:
CL900A with 152 mm (6") Test Well
Inserts: 152 mm (6")
CL900A with 101.6 mm (4") Test Well
Inserts: 101.6 mm (4")
CL950A: 152 mm (6")
Control: Microprocessor-based PID
digital controller
Power: 115 Vac, 50/60 Hz,
230 Vac, 50/60 Hz, 1050 W
Dimensions: 312 H x 363 W x 191 mm D
(12.3 x 14.3 x 7.5")
Weight: 11.4 kg (25 lb)
The CL950A British
5 probes at one time and comes standard
with 1⁄16, 1⁄8, 3⁄16 and two 1⁄4" diameter holes.
The CL950A-M metric multi-well accepts
up to 5 probes at one time and comes
standard with 2, 3, 4.5, and two 6 mm
diameter holes.
multi-well accepts up to
Use Your CL900A
Standing Up or
Tilted on a Bench.
CL900A shown with
HH502 thermometer
Visit omega.com/hh500.
Probes also sold
separately, visit
omega.com
Caution: To avoid fire hazard or damage to
your calibrator, always allow your calibrator
to cool down to ambient temperature before
returning to storage.
To Order Visit omega.com/cl900a_950a for Pricing and Details
Model No. Description
CL900A-110 Hot point probe calibrator, 115 Vac
CL900A-220* Hot point probe calibrator, 230 Vac, CE
CL950A-110 Hot point multi-well Metric probe calibrator, 115 Vac
CL950A-220* Hot point multi-well Metric probe calibrator, 230 Vac, CE
CL950A-M-110 Hot point metric multi-well probe calibrator, 115V
CL950A-M-220* Hot point metric multi-well probe calibrator, 230V
Comes complete with CL906 test well, insert removal tongs and operator’s manual. Inserts are
for CL900 and CL900A hot point® calibrators only.
†
To order NIST Calibration points, add suffix “-NIST” to model number for an additional cost.
Note: Only 230 Vac models are CE marked.
*
Ordering Examples: CL900A-110, hot point® calibrator, 110 Vac, and CL905 10.6 cm (4")
test well insert for 6.3 cm (1⁄4") probes. OCW-3 OMEGACARESM extends standard 1-year
warranty to a total of 4 years.
K
CL900A accepts any insert listed
in the table at right.
We make running changes when
technical advances allow. Check at time
of ordering for additional features.
SM
Extended Warranty
Program
OMEGACARESM extended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE
covers parts, labor and equivalent loaners.
SM
Inserts for CL900A Series
Model No. Description
CL901 Insert,
1
⁄8 diameter x 4" deep test well
CL901-M Metric insert, 2 diameter x 101.6 mm deep test well
CL902 Insert,
1
⁄8 diameter x 6" deep test well
CL902-M Metric insert, 2 diameter x 152.4 mm deep test well
CL903 Insert,
3
⁄16 diameter x 4" deep test well
CL903-M Metric insert, 3 diameter x 101.6 mm deep test well
CL904 Insert,
3
⁄16 diameter x 6" deep test well
CL904-M Metric insert, 3 diameter x 152.4 mm deep test well
CL905 Insert,
1
⁄4 diameter x 4" deep test well
CL905-M Metric insert, 4.5 diameter x 101.6 mm deep test well
CL906 Insert,
1
⁄4 diameter x 6" deep test well
CL906-M Metric insert, 4.5 diameter x 152.4 mm deep test well
CL907 Insert,
5
⁄16 diameter x 4" deep test well
CL907-M Metric insert, 6 diameter x 101.6 mm deep test well
CL908 Insert,
5
⁄16 diameter x 6" deep test well
CL908-M Metric insert, 6 diameter x 152.4 mm deep test well
CL909 Insert,
CL910 Insert,
3
⁄8 diameter x 4" deep test well
3
⁄8 diameter x 6" deep test well
CL911 Insert, undrilled
K-22