Ametek DTI-1000, STS-100 Specifications

t e m p e r a t u r e

Wide temperature range

DTI-1000: -200 to 750°C (-328 to 1382°F)
STS-100: -150 to 650°C (-238 to 1202°F)

Improve your accuracy

DTI-1000: accuracy to ±0.005°C (±0.009°F)
DTI-1000 + STS probe:
±0.03°C (±0.054°F) ± LSD

Reliable temperature readings

The measuring principle is a 4-wire True
Ohm Measurement, which eliminates the
EMF in cables, sockets, and sensors

Reference Digital Temperature
Indicator

DTI-1000 and STS-100

Dual channel inputs

Sensor 1 and sensor 2, with differential
value 1 - 2, peak hold etc.

Minimize paperwork

RS232 communication, special calibration
and data storage software are included

Fast response time

Ensures correct monitoring of the tempera­ture stability

Specified low drift

Maintains a minimum uncertainty budget
over the entire period between re-calibra­tion intervals

Wide selection of probes

Including 90° angled or cable probe, and
4 mm / 0.16 in or 6.35 mm / 0.25 in, offer­ing flexibility in test methods and sensors­under-test

Wherever there is a demand for reliable and accurate temperature mea­surement, you can rely on the JOFRA DTI-1000 reference thermometer
and the JOFRA STS reference probes; backed on more than 50 years of
experience.

The DTI-1000 with a STS-probe is a fully traceable thermometer recom­mended as the reference instrument to verify the true temperature in any
type of temperature calibrator, liquid bath, or dry-block calibrator.

Use the DTI-1000 and the STS probes as your working temperature
reference in any calibration application or use the set-up directly in cus­tody transfer applications where high accuracy (low uncertainty) means
money.

The superior specifications combined with a long history of reliability and
low drift have made the DTI-1000 and the STS probes the working stan­dard in many national laboratories worldwide.

The STS industrial temperature reference probes are built to last. All
Superior Temperature Standard probes are economical and offer fast
response times, low immersion depths, compact physical sizes, and
specified low drift rates; even at high temperatures.

ISO 9001 Manufacturer

Specification Sheet, SS-DTI-1000

The ON/OFF key automatically initiates a self-test
routine and the display indicates tested param­eter results plus the date of the last calibration.

Sensor 1 connections

Sensor 2 connections

The MENU/ENTER key includes intelligent
prompts that guide the user through setup
and operation. This key allows the user to
specify measuring units, resolution, sensor
identification, and coefficients.

The RESET/SELECT key allows
the user to enter peakholds and
to change settings in the MENU
mode.

Display with 2 * 20 characters,
which continuously read out
the two inputs.

The MODE key allows the user
to specify temperature modes on
the dual channel inputs; sensor
1 and sensor 2, with differential
values 1-2, peak hold etc.

2 www.jofra.com

Carrying case (Optional) - 124944

The optional protective carrying case ensures safe
transportation and storage of the instrument and
associated equipment.

Digital Temperature Indicator • DTI-1000 & STS-100

True Ohm Measurement

The DTI-1000 has been designed to employ state-of-the­art DC measuring techniques in combination with powerful
microprocessor technology. To achieve high accuracy, the
measuring principle used by the DTI-1000 is True Ohm
Measurement thus eliminating the EMF from cables, sock­ets, and sensors.

Conversion to temperature

DTI-1000 will accept Callendar van Dusen coefficients R0,
A, B and C or ITS-90 coefficients for converting resistance
to temperature. If you do not have these coefficients avail­able from the certificate for the sensor, but have measure­ment data (temperature and resistance), JOFRACAL can
help you calculate the coefficients required.

True Ohm Measurement is a proven method to achieve
accurate compensation for errors induced by thermal
effects.

The resistance is measured through the 4-wire system at
1 mA, after which the instrument takes a reading with­out any applied current; this second reading is the “error
EMF”.

Combining a DTI-1000 and a STS reference sensor with
the use of ITS-90 coefficients ensures the best overall
accuracy.

Simplified operation

The DTI-1000 features an easy-to-read VFD display and
dedicated function keys. All operations are performed
from the instrument’s front panel.

Reference resistors

To minimize the effect of any drift caused by ambient
temperature, humidity and /or aging, the DTI series is
designed with built-in high precision and extremely stable
reference resistors. This technique minimizes drift.

Linearity

To obtain high accuracy, it is necessary to know the char­acteristics of the Pt100 sensor to be used with the DTI­1000 e.g. one of the JOFRA STS probes. The DTI-1000
provides 3 different linearity setups:

• Certified data pairs of ohm and reference temperature.

Use JOFRACAL for calculating and downloading of
individual coefficients from a certified sensor e.g. a
STS JOFRA probe based on “best curve fit”

• Coefficients, according to IEC 751 (Callender van Dusen)

• Coefficients according to ITS-90

DTI-1000 & STS-100 • Digital Temperature Indicator

www.jofra.com 3

JOFRACAL CALIBRATION SOFTWARE

FUNCTIONAL SPECIFICATIONS

JOFRACAL calibration software ensures easy calibration
of RTD´s, thermocouples, transmitters, thermoswithes,
pressure gauges and pressure switches.

JOFRACAL can be used with DPC-500, HPC and IPI pres­sure calibrators, all JOFRA temperature calibrators, as well
as JOFRA AMC910, ASC300 multi signal calibrator and
ASM-800 signal multi scanner. When used with JOFRA
ASM-800 signal multi scanner, JOFRACAL can perform a
simultaneous semi automatic calibration on up to 24 pres­sure and/or temperature devices under test in any combi­nation.

JOFRACAL software controls the complete calibration
procedure, stores the results and provides a calibration
audit trail through hard-copy certificates. All calibration
data are stored for each sensor to monitor drift and opti­mise recalibration intervals. A scheduler feature allows
planning of future calibrations.

REQUIREMENTS JOFRACAL

Minimum hardware requirements:

• Intel® Pentium® lI 1.4 GHz processor.

• 64MB RAM (128MB recommended)

• 80MB free disk space on hard disk (120MB

recommended) prior to installation

• Standard VGA (800x600, 256 colours). 1024x768

recommended.

• CD-ROM drive for installation of program

• 1 or 2 free RS-232 serial ports, depending on

configuration

Minimum software equirements:

• Microsoft Windows® 98, Microsoft Windows® NT 4.0,

Microsoft Windows® 2000, Microsoft Windows® ME,
Microsoft Windows® XP, Vista.

• System fonts: MS Sans Serif and Arial

Input interface

DTI-1000 A (Pt100 / Pt25) ........................................ 0-360Ω

DTI-1000 B (Pt25) ..........................................................0-95

Accuracy, 12 months use

DTI-1000 A ......................................±(6 ppm rdg + 1.4 mΩ)

DTI-1000 B ...................................... ±(6 ppm rdg + 0.7 mΩ)

For accuracies in °C and °F please see table below

Power supply

Mains .........................................................9 VDC / 200 mA

Batteries ................................................ 8 x 1.5 V (type AA)

Battery life ...............................................15 hours typically

Mains specifications

Temperature range ............-200 to 750°C / -328 to 1382°F

Temperature coeffecient: .. outside 23°C ±3°C / 73°F ±5°F

.................................................... 0.8 ppm/°C / 0.45 ppm/°F

Input channels ................................................................... 2

Termination Goldplated LEMO / 4 mm banana test sockets
Resolution (user-selectable) .. 0.1, 0.01 or 0.001 °C/°F/K/Ω

Update rate (0.1 / 0.01 / 0.001°) ............2 / 3 / 12 seconds

Measuring units .......................................... °C, °F, K and Ω

Measuring current .........................................................1mA

Instrument dimensions

L x W x H: ............ 225 x 135 x 195 mm / 8.9 x 5.3 x 7.7 in

Weight ............................................................2.2 kg / 4.9 lb

Shipping (+ std. accessories + carrying case)

L x W x H ...... 600 x 380 x 310 mm / 23.6 x 15.0 x 12.2 in

Weight ........................................................10.4 kg / 22.9 lb

Shipping (+ std. accessories but no carrying case)

L x W x H ........ 320 x 240 x 270 mm / 12.6 x 9.5 x 10.6 in

Weight: ..........................................................3.5 kg / 7.7 lb

Shipping (carrying case only)

L x W x H ...... 600 x 380 x 310 mm / 23.6 x 15.0 x 12.2 in

Weight: ........................................................6.9 kg / 15.2 lb

Miscellaneous

Serial data interface ................................................. RS232

Display: ..........VFD, two lines, 20 characters alphanumeric

Operating (ambient) temperature ....0 to 50°C / 32 to 122°F

Storage (ambient) temperature .... -20 to 60

Humidity ......................................................... 0 to 90% RH

o

C / -4 to 140oF

4 www.jofra.com

Digital Temperature Indicator • DTI-1000 & STS-100

JOFRA STS REFERENCE SENSORS

To get an ideal reference system, JOFRA offers a range
of reference sensors. JOFRA STS Superior Temperature
reference Sensors are based on more than 50 years of in­dustrial temperature sensor manufacturing experience. The
main requirement of a reference sensor is stability: The less
the sensor drifts, the lower the measurement uncertainty.
All JOFRA Superior Temperature Standard sensors are
economical and offer fast response times, low immersion
depths, compact physical sizes, and specified low drift
rates: even at high temperatures. These are all important
considerations when selecting a reference sensor.

All sensors are supplied with an accredited or traceable
certificate stating the sensor coefficients.

System accuracy for JOFRA DTI-1000 with
JOFRA STS-100/102

STS-100 probe:

-50 to 250°C (-58 to 482°F): ±0.030°C (±0.054°F)
±0.045°C (±0.081°F)

-50 to 320°C (-58 to 608°F): ±0.040°C (±0.072°F)
±0.050°C (±0.090°F)

-50 to 400°C (-58 to 752°F): ±0.060°C (±0.108°F)
±0.070°C (±0.126°F)

-50 to 650°C (-58 to 1202°F): ±0.060°C (±0.108°F)

±0.080°C (±0.144°F)

-90 to 650°C (-130 to 1202°F): ±0.080°C (±0.144°F)

±0.110°C (±0.198°F)

STS-102 cable sensor:

-45 to 155°C (-49 to 311°F): ±0.040°C (±0.072°F)
±0.070°C (±0.126°F)

All sensors are as standard supplied with an accredited certificate
stating the sensor coefficients. A traceable certificate is optional.

Note 1: Specified at 95% confidence interval k=2, over full
range, including calibration uncertainty, excluding 1 LSD (Least
Significant Digit).

Note 2: Excl. sensor drift

Note 3: Incl. sensor drift after 100 hours at max. temperature.

1) 2)

1) 3)

1) 2)

1) 3)

1) 2)

1) 3)

1) 2)

1) 3)

1) 2)

1) 3)

1) 2)

1) 3)

Accuracy - 12 months

Temperature range

-200°C / -328°F ±0.004°C / ±0.006°F ±0.014°C / ±0.026°F ±0.007°C / ±0.013°F

0°C / -32°F ±0.005°C / ±0.009°F ±0.016°C / ±0.028°F ±0.009°C / ±0.015°F

-155°C / -311°F ±0.006°C / ±0.011°F ±0.017°C / ±0.031°F ±0.010°C / ±0.018°F

200°C / 392°F ±0.007°C / ±0.013°F ±0.018°C / ±0.032°F ±0.010°C / ±0.019°F

320°C / 608°F ±0.008°C / ±0.014°F ±0.019°C / ±0.035°F ±0.012°C / ±0.021°F

400°C / 752°F ±0.008°C / ±0.015°F ±0.020°C / ±0.037°F ±0.012°C / ±0.022°F

600°C / 1112°F ±0.010°C / ±0.019°F ±0.023°C / ±0.041°F ±0.014°C / ±0.026°F

650°C / 1202°F ±0.011°C / ±0.020°F ±0.024°C / ±0.043°F ±0.015°C / ±0.027°F

750°C / 1382°F ±0.012°C / ±0.021°F ±0.026°C / ±0.047°F ±0.017°C / ±0.030°F

DTI-1000 & STS-100 • Digital Temperature Indicator

DTI-1000 A with Pt-100
(excl. sensor uncertainty)

DTI-1000 A with Pt-25
(excl. sensor uncertainty)

DTI-1000 B with Pt-25
(excl. sensor uncertainty)

www.jofra.com 5

ORDERING JOFRA DTI-1000 AND STS-100

Order No. Description
Base model number

DTI-1000A DTI-1000 A, -200 to 750°C / -328 to 1382°F (Pt-25 or Pt-100)
DTI-1000B DTI-1000 B, -200 to 750°C / -328 to 1382°F (only Pt-25)

Calibration certificate DTI-1000

F NPL traceable calibration certificate
H Accredited calibration certificate (Option)

Channels

C1 One channel
C2 Two channels

STS reference sensor

100 Pt100 reference probe, solid,

-150 to 650°C (-238 to 1207°F)

Diameter of the probe

A Overall diameter 4 mm (0.16 in)
B Overall diameter 6.35 mm (0.25 in)

Shape and length

250 Straight probe, 250 mm (9.8 in) in alu case
350 Straight probe, 350 mm (13.8 in) in alu case
500 Straight probe, 500 mm (19.7 in) in alu case
901 90° angled probe, 207 mm (8.1 in) in plastic case

Calibration certificate

F NPL traceable calibration certificate on sensor
H Accredited calibration certificate on sensor (standard)
FS NPL traceable system calibration certificate
HS Accredited system calibration certificate

Options

C System carrying case (max. 350 mm. probe)

DTI1000AFC1100A250HC Sample order number

JOFRA DTI-1000 A with NPL traceable calibration certificate, One channel and 4 mm STS-100 reference
sensor, straight 250 mm. with accredited calibration certificate and carrying case.

SYSTEM CALIBRATION DTI-1000 AND STS-100

If you need a system calibration certificate for the DTI-1000 and STS-100 reference sensor you can
choose between:

FS, which is a standard traceable system calibration certificate
HS , which is a standard accredited system calibration certificate

Please specify in the above ordering structure.

A standard system calibration of a DTI-1000 and a STS-100 probe includes the following
calibration points:

-45, -20, 0, 50, 100, 200, 320, 450, 650°C / -49, -4, 32, 122, 212, 392, 608, 842, 1202°F

6 www.jofra.com

Digital Temperature Indicator • DTI-1000 & STS-100

ORDERING JOFRA DTI-1000 AND STS-102

Order No. Description
Base model number

DTI-1000A DTI-1000 A, -200 to 750°C / -328 to 1382°F (Pt-25 or Pt-100)
DTI-1000B DTI-1000 B, -200 to 750°C / -328 to 1382°F (only Pt-25)

Calibration certificate DTI-1000

F NPL traceable calibration certificate
H Accredited calibration certificate (Option)

Channels

C1 One channel
C2 Two channels

STS reference sensor

102 Pt100 reference probe, cable,

-50 to 155°C (-58 to 311°F)

Diameter of the probe

A Overall diameter 4 mm (0.16 in)

Shape and length

030 Short sensor 30 mm / 1.18 in in plastic case

Calibration certificate

F NPL traceable calibration certificate on sensor
H Accredited calibration certificate on sensor (standard)
FS NPL traceable system calibration certificate
HS Accredited system calibration certificate

Options

C System carrying case (max. 350 mm. probe)

DTI1000AFC1102A030HC Sample order number

JOFRA DTI-1000 A with NPL traceable calibration certificate, One channel and 4 mm STS-102 reference
sensor, short 30 mm with accredited calibration certificate and carrying case.

SYSTEM ACCESSORIES DTI-1000 AND STS-102

If you need a system calibration certificate for the DTI-1000 and STS-100 reference sensor you can
choose between:

FS, which is a standard traceable system calibration certificate
HS , which is a standard accredited system calibration certificate

Please specify in the above ordering structure.

A standard accredited system calibration of a DTI-1000 and a STS-102 probe includes the following
calibration points:

-45, -20, 0, 50, 100, 155°C / -49, -4, 32, 122, 212, 311°F

DTI-1000 & STS-100 • Digital Temperature Indicator

www.jofra.com 7

ORDERING INFORMATION DTI-1000

Order No. Description
Base model number

DTI-1000A DTI-1000 A, -200 to 750°C / -328 to 1382°F
Pt-25 or Pt-100
DTI-1000B DTI-1000 B, -200 to 750°C / -328 to 1382°F
only Pt-25

Calibration certificate

F NPL traceable calibration certificate
H Accredited calibration certificate (Option)

Options

C Carrying case, aluminum

DTI1000AFC Sample order number

JOFRA DTI-1000 A with NPL traceable certificate and carrying case.

STANDARD DELIVERY

• DTI-1000

• JOFRACAL calibration software

• AmeTrim ATC/DTI to adjust the DTI-1000

• RS232 cable, 9 pin connector

• 8 batteries

• User manual

• Calibration certificate, traceable to International Standards

• Mains adapter

ACCESSORIES

124716 4x 1,5 Volt rechargeable batteries
* The DTI-1000 requires 8 x 1.5 Volt batteries
124718 Charger for rechargeable batteries 115/230 VAC
124944 Carrying Case for DTI-1000
* (May also hold two connected STS sensors up to 350 mm)
124315 Removable trolley for carrying case
125002 Edgeport Converter with 4 pcs of RS232 ports
124720 Mains adapter 9VDC/200mA - 230VAC/115VAC

AMETEK Calibration Instruments

is one of the world’s leading manufacturers and
developers of calibration instruments for temperature,
pressure and process signals as well as for temperature
sensors both from a commercial and a technological
point of view.

JOFRA Temperature Instruments

Portable precision thermometers. Dry-block and liquid
bath calibrators : 5 series, with more than 25 models
and temperature ranges from - 90° to 1205°C / -130°
to 2200°F. All featuring speed, por tability, accuracy
and advanced documenting functions with JOFRACAL
calibration sof tware.

JOFRA Pressure Instruments

Convenient electronic systems ranging from -25 mbar
to 1000 bar (0.4 to 15,000 psi) - multiple choices
of pressure ranges, pumps and accuracies, fully
temperature-compensated for problem-free and accurate
field use.

JOFRA Signal Instruments

Process signal measurement and simulation for easy
control loop calibration and measurement tasks - from
handheld field instruments to laboratory reference level
bench top instruments.

JOFRA / JF Marine Instrum ents

A complete range of calibration equipment for
temperature, pressure and signal, approved for marine
use.

FP Temperature Sensors

A complete range of temperature sensors for industrial
and marine use.

M&G Pressure Testers

Pneumatic floating-ball or hydraulic piston dead weight
testers with accuracies to 0.015% of reading.

M&G Pumps

Pressure generators from small pneumatic “bicycle” style
pumps to hydraulic pumps generating up to 1,000 bar
(15,000 psi).

AMETEK Denmark A/S
Gydevang 32-34 | 3450 Allerød | Denmark
T: [phone] | [e-mail]

Sales & Service:
Europe, Asia, Africa, Middle East and South America

Information in this document is subject to change without notice. ©2010, by AMETEK, Inc., www.ametek.com. All rights reserved.

8 www.jofra.com

.. .beca use calib ratio n is
a ma tter of c onfid ence

AMETEK Mansfield & Green (North America)

T: [phone] | [e-mail]

AMETEK Singapore Pte. Ltd. (Singapore)
T: [phone] | [e-mail]

AMETEK Inc. Beijing Rep. Office (China)

T: [phone] | [e-mail]

AMETEK GmbH (Germany)
T: [phone] | [e-mail]

AMETEK Calibration Instruments (UK)
T: [phone] | [e-mail]

www.jofra.com

Pub code SS-DTI-1000 Issue 1011