Omega Products TRCIII User Manual

ice point™ Calibration Reference Chamber

High Precision—Uses Freezing Water to Maintain 0°C (32°F)

TRCIII

Optional

U A 0°C (32°F)

Thermoelectric “Refrigerator”

U Eliminates Old

Fashioned “Ice Bath”

U For Versatile Use

in the Factory, Laboratory,

Use Up to

6 Probes at

One Time

with TRCIII

Instrument Shop

U Calibration of All

Temperature Instruments and Sensors

U Rugged Outer Case for

Safe Portability

U Accepts Up to 6 Probes U Available in 120 or

220 Vac Models

U NIST Traceable

Calibration Available

U Companion Dry Block

Probe Calibrator Available (Model CL900/950)

The TRCIII ice pointTM Calibration Reference Chamber relies on the equilibrium of ice and distilled, deionized water at atmospheric pressure to maintain 6 reference wells at precisely 0°C (32°F). The wells extend into a sealed cylindrical chamber containing the distilled, deionized water. The outer walls of the chambers are cooled by thermo-electric cooling elements. The increase in volume produced by the creation of ice crystals within the

TRCIII

cell is sensed by the expansion of a bellows, which operates a microswitch and controls the cooling elements. The alternate freezing and thawing of the ice accurately maintains a 0°C (32°F) environment around the reference wells.

The automatic operational features of this instrument eliminate the need for frequent attention, required of common ice baths. On/off cycling of a pilot light indicates proper operation of the unit at ice point temperature.

Any combination of thermocouples may be used with this instrument by simply inserting the reference probes in the reference wells. Calibration of other types of temperature sensors at 0°C (32°F) may also be performed.

When accurate temperature measurements are required, the TRCIII ice pointTM Chamber delivers the precision you need. The reference wells are maintained at 0°C (32°F) to within ±0.1°C and a stability of ±0.04°C for constant ambient. Continuous cycling operation maintains constant equilibrium conditions within the cell, eliminating the slow drift often experienced in common ice baths as melting

TRCIII ice point™ shown with companion CL950 dry block probe calibrator. See omega.com for details.

occurs. TRP reference probes, used with the TRCIII, provide a junction from thermocouple alloys to copper wire, at the probe tip. When inserted into the TRCIII, TRP probes enable the change from thermocouple alloy to copper at 0°C (32°F), for accurate cold junction compensation.

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Thermocouple TRP Features

U Made with Special

Limits of Error Material

U All Standard

Calibrations Available

U Comes Complete with

Mating Connectors

U Can Be Ordered with

12, 24 or 36" Leads

TRP Applications

Thermocouple leads

Connectors

TRP Applications

Copper leads

Series TRP Reference Probes up to six can be used at the same time

Model TRCIII

–

Sturdy handle for easy portability.

Speciﬁcations

Reference Wells: 6 wells, 5⁄32" ID, 33⁄4"

deep; wells are thermally and electrically grounded to each other; accepts probes

Reference Temperature: 0°C Accuracy: ±0.1°C or better Stability: ±0.04°C for constant ambient Environmental Ambient: 2 to 32°C

(35 to 90°F) Power Required: 115/220 V, 60 Hz,

100 Watts Stabilization Time: 2 or 3 hours

depending on ambient temperature and thermal load

Dimensions: 305 H x 159 W x 322 mm D (12.0 x 6.25 x 12.7")

Weight: 9.5 kg (21 lb)

Extended Warranty

Program

OMEGACARE

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.

extended warranty program

⁄8" OD

Working Thermocouple under test in a known temperature environment

White-coded Copper-Copper

Supplied with male and female color-coded thermocouple connectors

connectors

TRP-T shown with additional wires attached to mating connectors.

Unit must not be allowed to

freeze or damage will result.

Caution:

Thermocouple TRPs

Thermocouple Material Type Model No. + TRP-K CHROMEGA

ALOMEGA

TRP-T Copper Constantan TRP-E CHROMEGA TRP-J Iron TRP-S Platinum

Constantan Constantan

Platinum 10% Rh

TRP-R Platinum Platinum 13% Rh TRP-B Platinum 30% Rh Platinum 6% Rh TRP-C W 5% Re W 26% Re TRP-D W 3% Re W 25% Re

For thermocouple Types J, K, T, E, standard length is 12". For 24" or 36" long leads add sufﬁx “-24” or “-36” to model number, for an additional cost.

For thermocouple Types R, S, B, C, G, D, standard length is 6". Add appropriate sufﬁx for each additional 6", for an additional cost.

To Order Visit omega.com/trciii for Pricing and Details

Model No. Description TRCIII ice point™ reference 120 Vac operation

TRCIII-220 ice point™ reference 220 Vac operation CAL-3 NIST-traceable calibration

Comes complete with operator’s manual, mineral oil and power cord 1.8 m (6'). Ordering Example: TRCIII, ice point™ reference cell, TRP-K, TRP-J, TRP-T, TRP-E,

Type J, K, T and E temperature reference probes. OCW-3, OMEGACARESM extends standard 1-year warranty to a total of 4 years.

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