Druck DBC 150, DBC 650 Data sheet

DBC SERIES

Dry Block Temperature Calibrators

DBC 150/650 Series

Ranges from -45º to 650ºC

! Rapid heating, cooling and settling

! Switch test, ramp, step and preset functions ! Reads set temperature and device output simultaneously ! Measures reference probe, RTD's, T/C's mA,

mV and ohms

! Automated calibration via RS 232

Safe to touch “cool” surface

Large dry well with interchangeable inserts

Integral handle for portability - even when hot

Pt 100 input for traceable reference probe

Full numeric tactile keypad

Dedicated Preset, Ramp, Step and Switch Test keys

Thermal barrier between heat source and control electronics

Power supply

SETTING THE ST ANDARD FOR DRY BLOCK CALIBRATORS

Druck, a leading manufacturer of portable and workshop calibrators, has redefined the term “temperature calibrator” with the introduction of the DBC series. This innovative calibrator combines a highly stable temperature source with precision measurement of temperature probe signals, providing a truly stand-alone temperature calibrator suitable for laboratory, workshop and portable use.

The product range includes Temperature Source (TS) and Temperature Calibrator (TC) versions. Each version is available with a choice of two temperature ranges for use up to 150 C (DBC 150) or alternatively 650 C (DBC 650).

Druck control technology insures rapid settling time, excellent set-point stability and high accuracy. For improved measurement uncertainty, a traceable Pt 100 reference probe can be positioned directly into the well insert. The probe output is measured and displayed by the DBC.

The TC version is a complete calibration system which simultaneously controls the reference temperature while measuring the device under test. In addition, loop power is provided for transmitters. In calibration mode the percentage error or temperature deviation is displayed together with the input and output readings.

DBC Series - key featu res

Ranges: DBC 150: -45° (below ambient) to 150 C.

DBC 650: 50° to 650 C. Fast response: Rapid heating, cooling and settling. Stability: Druck control technology provides

excellent temperature stability. Reference probe: Pt 100 reference probe input. RS 232 interface: Allows fully automated PC control. Switch test: Open/closed detection with hysteresis

displayed. Ramp, preset, step: Programmable Ramp, Preset recall and

calibration Step sequences. Reduction Inserts: A wide range of standard interchangeable

inserts are available. Inserts can also

be supplied to specific requirements. Easy to use: Full numeric k e ypad and input/output menu.

TC version - additional features

The calibrator version includes the following features in addition to those listed above:

Electrical Inputs: Measures RTD’s, T/C’s, mV/V, mA and

ohms. Dual Readout: Simultaneous reading of source

temperature and device output. Error Analysis: Percentage error and deviation

calculations. Loop Power: 24 Vdc supply.

The DBC series are rugged, easy to use and designed to give years of reliable service. Stand alone operation eliminates the need for secondary equipment, making the DBC one of the most cost-effective temperature calibration systems available.

DBC 150/650 Series

Dry Block Temperature Calibrators

24 Vdc loop power supply*

*TC model only

Thermocouple input includes cold junction compensation*

RTD input for 2, 3 and 4 wire configurations*

Input sockets for RTD’s, T/C’s, ohms, mA and mV/V*

Simple to use input/output menu

Large scratch resistant LCD with backlight

RS 232 interface

Switch test inputs

Rugged metal case for field use

MU LTIFUNCTION DRYBLOCK CALIBRATORS

The DBC series is comprised of two models, the DBC TS Temperature Source and the stand alone DBC TC Temperature Calibrator. They are designed for calibrating and maintaining temperature elements, probes, transmitters and thermostats. The two models share the same temperature control technology and differ only in electrical measurement capabilities.

DBC TS TEMPERATURE SOURCE

The DBC TS temperature source uses an internal high accuracy sensor to measure the equalization block temperature. Alternatively, for direct measurement of the insert temperature, a Pt 100 electrical input is provided. Traceable reference probes are available. A switch detection input is supported with a fully automatic switch test facility.

DBC TC TEMPERATURE CALIBRATOR

The DBC TC temperature calibrator adds electrical measurement capabilities for RTD’s, thermocouples, mA, mV/V and ohms. 24V loop power is also provided. The dual parameter display is quickly configured from the input/output menu to read the reference temperature, the device output and the error. This is a self-contained temperature calibration system for stand-alone operation.

CALIBRATING RTD SENSORS AND THERMOCOUPLE SENSORS

With conventional dryblock calibrators, ancillary indicators are usually required to measure sensor outputs. The DBC TC temperature calibrator can measure 5 types of RTD and 11 types of thermocouple. It supports 2, 3, and 4 wire RTD configurations and provides automatic cold junction compensation for thermocouples. Preset temperatures can be programmed to standard test points for quick recall when required.

The dry block temperature calibrator has internal multi-language firmware.

DBC 150/650 Series

Improving Measurement Uncertainties

CALIBRATING TEMPERATURE TRANSMIT TERS

Many temperature transmitters are supplied complete with the sensing element and it is common practice to calibrate the complete device.

The DBC TC temperature calibrator measures the transmitter output, powers the loop and calculates the error.

The Step function quickly divides specific transmitter ranges into temperature calibration points.

TESTING SWITCHES

Temperature switches, although simple devices, are difficult to maintain and conventional test methods often yield inaccurate results.

To save time and provide highly accurate results for compliance with quality systems, the DBC ramps through the switching points, captures the temperatures and displays the hysteresis value.

INSERTS

Three pre-drilled inserts are available to accommodate a wide variety of industrial probes. By selecting the most closely fitting insert for the reference probe and probe under test the uncertainties of measurement can be kept to a minimum.

Careful design of the insert insures temperature uniformity across the diameter and by positioning a reference probe to the same depth as the probe under test, measurement uncertainties can be further reduced.

Inserts can be machined to specific requirements. This provides flexibility for testing multiple probes simultaneously or for the best fit for non standard probe diameters.

Customized blank inserts are also available.

REFERENCE PROBES

The DBC’s internal control sensor provides an accurate

measurement of temperature in the well insert,

but higher accuracy calibrations with reduced uncertainties are achieved by using the optional Pt 100 reference probes.

These high accuracy traceable probes measure the insert temperature at the same relative position as the device under test. The errors due to the insertion depth of the device under test and due to the

temperature gradient between the insert

and the control sensor can be eliminated.

Three probes are available to suit

different applications. Probe options

B1 and B3 are angled to provide

transmitter head clearance (see

diagram). The DBC can be programmed with the correction coefficients for a preferred

probe.

Standard

Option C1/C2

Option C3/C4

Option B1/B3

Option B2

STANDARD FEATURES

Display

2.4 x 1.6 in. graphic LCD with backlight.

Keypad

21 keys including full numeric keypad and special function keys for Step, Ramp, Preset Recall and Switch Test. Key tone on/off.

User interface

Easy to use input/output menu.

Language

Selectable languages English, French, German, Italian, Portuguese and Spanish.

Units

°C, °F and °K

Reference probe input

Pt 100 input. 4 wire mating connector supplied. User programmable correction coefficients. Input accuracy (excluding probe) 0.04°C.

Switch test

Continuity check with buzzer. Captures open/closed temperatures and records hysteresis.

Percentage steps

20, 25, 33 and 50% divisions of user entered span. Up/down arrows activate.

Temperature steps

Programmable temperature steps. Up/down arrows activate.

Ramp

Programmable ramp rate (0.1° to 10°C/min) and end points.

Presets

Five programmable preset temperatures for instant recall using #1 to #5 keys.

RS 232 interface

Bi-directional RS 232 interface for on-line PC control.

Well dimensions

1.2 x 6.3 in., maximum insertion depth 6.1 in.

Reference standards

EN 60584-1: 1997-10 (thermocouples) EN 60751-1: 1998-05 (Pt 100)

Power Supply

Switch selectable 85 to 125/200 to 265 VAC 50/60 Hz.

ENVIRONMENTAL

Calibration reference

ºC (72°F)

Operating temperatu re

º to 50ºC (external ambient) (32° to 122°F).

Specifications quoted include temperature errors from 15° to 30°C (60° to 86°F).

Conformity

EN 61010-1: 1997-10 EN 50081-1: 1997-06 EN 50082-1: 1997-05 CE marked.

Physical

21 lbs., 12.7 x 6.1 x 12.9 in

Accuracy

(1 year)

0.15

ºC

0.3

ºC

0.3

ºC

0.15

ºC

0.3

ºC

0.6

ºC

2.5

ºC

1.5

ºC

0.6

ºC

0.3

ºC

0.3

ºC

0.9

ºC

0.6

ºC

0.3

ºC

0.3

ºC

0.9

ºC

0.03 + 0.03

0.01 + 0.006

0.015 + 0.015

0.01 + 0.01

-45 (below ambient) to 150

ºC

0.03

ºC

0.01

ºC

0.15

ºC (deviation across the insert diameter)

14 minutes from 20 to 120

ºC

22 minutes from 25 to -20

GENERAL SPECIFICATIONS

ADDITIONAL SPECIFICATIONS - TC V E RSIONS ONLY

Range Stability Resolution Radial Uniformity Heating Time* Cooling Time*

DBC 150 TS and DBC 150 TC general specifications

50° to 650º

0.05

C (or 0.15ºC from 50 to 70ºC)

0.01

ºC

0.25

C (deviation across the insert diameter)

22 minutes from 25° to 650

27 minutes from 60° to 100

ºC (with optional cooling probe)

Range Stability Resolution Radial Uniformity Heating Time* Cooling Time*

DBC 650 TS and DBC 650 TC general specifications

Resolution

0.01

ºC

0.1

ºC

0.1

ºC

0.01

ºC

0.1

ºC

0.1

ºC

0.1

ºC

0.1

ºC

0.1

ºC

0.1

ºC

0.1

0.001V

0.001mV

0.001mA

0.01

Ω

Option B1

-50° to 400

Pt 100 (EN 60751)

15.75 in

Tip to 0.9 in

3/16 in

0.2°C

Stainless Steel

Parameter

Range

Probe T ype

Length

Measuring Length

Diameter Accuracy

Sheath

Cable

Certification

Option B2

-50° to 650ºC

Pt 100 (EN 60751)

15.75 in

Tip to 0.9 in

3/16 in

0.3°C

Alumina

Option B3

-50° to 650ºC

Pt 100 (EN 60751)

13.75 in

Tip to 0.6 in

3/16 in

0.3°C

Stainless Steel

3 ft. low loss cable terminated in 4 pin connector to suit DBC

3 points

2 points

Supplied as standard.

DBC 150 insert material: aluminum. DBC 650 insert material: bronze.

DBC 650 Option C2 Option C4 Option C6 Option C8

DBC 150 Option C1 Option C3 Option C5 Option C7

Inserts

Hole Diameters

3/16, 1/4, 3/8 in

3/16, 1/2 in

1/8, 3/16, 3/16, 5/16

Blank

Custom machined (please refer to Druck)

Standard Specification

1. T/C and RTD accuracies include electrical and conversion table uncertainty.

2. T/C total accuracy not including CJ compensation.

3. RTD total accuracy measured at 0.2mA excitation.

4. Electrical accuracies are defined as %reading and % Full Scale.

REFERENCE PROBES

WELL INSERTS

Accuracy (90 days)

0.04ºC

0.1

ºC

0.1

ºC

0.05

ºC

0.1

ºC

0.3

ºC

0.2

ºC

0.8

ºC

0.5

ºC

0.2

ºC

0.1

ºC

0.1

ºC

0.3

ºC

0.2

ºC

0.1

ºC

0.1

ºC

0.3

ºC

0.01 + 0.01

0.003 + 0.002

0.005 + 0.005

0.003 + 0.003

Range

-99° to 750ºC

-99° to 750

ºC

-99° to 550

ºC

-60° to 250

ºC

-99° to 990

ºC

-50° to 100

ºC

100° to 990

ºC

200° to 500

500° to 990ºC

0° to 990

ºC

-99° to 400

ºC

-99° to 800

ºC

800° to 900

ºC

-99° to -50

ºC

-50° to 0

ºC

0° to 500°C

500° to 600

0° to 12V

0° to 79.2mV

0° to 24mA

0° to 400

Ω

24V

Input

RTD

Pt 100 Pt 200, Pt 500 Pt 1000 Ni 100

Thermocouple

T/C K, J, N, E T/C S, R

T/C B

T/C C T/C T T/C L

T/C U

Electrical

Voltage

Current Ohms Loop Supply

* Time to display ready indication. Insert temperature may lag depending on loading and

ambient conditions.

Druck DBC 150, DBC 650 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual