Metek JOFRA STS-150 A User Manual

...because calibration is

a matter of confidence

User Manual

JOFRA STS-150 A

User manual

JOFRA STS-150 A

 Copyright 2012 AMETEK Denmark A/S

List of contents

1.0 General information ...................... 4

2.0 Safety instructions ........................ 5

3.0 Introduction .................................... 7

4.0 Functionality .................................. 8

4.1 Functional description ................. 8

4.2 Connections ................................ 8

4.3 Serial number ............................ 10

5.0 Operation ..................................... 11

5.1 Operation area .......................... 11

6.0 Maintenance ................................. 12

7.0 Technical specifications ............ 13

128166 01 2012-11-12 3

1.0 General information

This manual is only effective for the following
products:

JOFRA STS-150 A 912 (90°)
JOFRA STS-150 A 915 (90°)
JOFRA STS-150 A 935 (90°)
JOFRA STS-150 A 966 (90°)

The products are manufactured by:

AMETEK Denmark A/S

Gydevang 32-34

3450 Allerød - Denmark

TEL: [phone]

FAX: [phone]

4 2012-11-12 128166 01

2.0 Safety instructions

Read this manual carefully
before using the sensor!

In order to avoid any personal injuries
and/or damage to the sensor all safety
instructions and warnings must be
observed.

Warning

 Do not use in hazardous area.
 Handle carefully.
 Never exceed temperature range

Caution…

 When measuring temperature in

 The probe must always be protected

 The probe must never be exposed to

128166 01 2012-11-12 5

fluids (e.g. at re-calibration) the
enclosed protection tube must be
used.

against any mechanical damage.

mechanical shock effects.

 Avoid thermal shock
 Any bending of the probe may cause

permanent damage

 Never use power or tools to place

the probe.

6 2012-11-12 128166 01

3.0 Introduction

The JOFRA STS-150 A probes are specially designed
for fast and traceable calibration and temperature
measuring with your JOFRA equipment and are ready
for use.

Please read this manual carefully before use, to
obtain maximum value of your calibration system.

Warning

 Do not use in hazardous area.
 Handle carefully.
 Never exceed temperature range

128166 01 2012-11-12 7

4.0 Functionality

4.1 Functional description

The sensors can be used for measuring temperatures
in the range :

 -90°C to 125°C / -130°F to 257°F (912)
 -25°C to 155°C / -13°F to 311°F (915)
 0°C to 350°C / 32°F to 662°F (935)
 0°C to 660°C / 32°F to 1220°F (966)

The JOFRA STS-150 A probes may be supplied with
certificates for a limited temperature range.

The resistance of the JOFRA STS-150 A probe is
converted to temperature according to ITS-90
(calculated coefficients specif ic for the probe is stated
on the certificate).

4.2 Connections

The pin-layout is as follows:
Pin 1 : RTD I-

Pin 2 : RTD S­Pin 3 : RTD S+
Pin 4 : RTD I+
Pin 5 : Memory GND

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Pin 6 : Memory I/O
The figure below is shown from the connector side of
the probe connector.

5

6

4

1

2

3

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4.3 Serial number

The serial number is placed on the probe as shown
on the figure below:

Serial number

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5.0 Operation

5.1 Operation area

All the probes are intended for use in areas, which
meet the following operating conditions:

Probe connector
and cable : -20°C to 70°C (-4°F to 158°F)
Storage temp. : -20°C to 70°C (-4°F to 158°F)
Humidity : 0% to 90% RH
Protection class : IP 50

Warning

Do not use in hazardous areas.

128166 01 2012-11-12 11

6.0 Maintenance

The probe does not require specific maintenan ce
before or after use. The user may carry out the
following procedure himself:

Cleaning the probe : Use alcohol or water and a
soft cloth

Caution…

 The probe must always be protected

against any mechanical damage.

 The probe must never be exposed to

mechanical shock effects.

 Avoid thermal shock
 Any bending of the probe may cause

permanent damage

.

12 2012-11-12 128166 01

7.0 Technical specifications

Sensor type : Platinum sensor Pt100.
STS-150 A  = 0.00385

Probe length :
(912) : 210/193 mm (90° angle)

(8.27/7.60 in)
(915) : 180/163 mm (90° angle)
(7.09/6.42 in)
(935) : 165/148 mm (90° angle)
(6.50/5.83 in)
(966) : 201/183 mm (90° angle)
(7.91/7.20 in)

Temperature range :
(912) : -90°C to 125°C / -130°F to

257°F
(915) : -25°C to 155°C / -13°F to
311°F
(935) : 0°C to 350°C / 32°F to 662°F
(966) : 0°C to 660° / 32°F to 1220°F

Accuracy :
Repeatability : 0.004°C (0.007°F)
Hysteresis

1)

: 0.01°C @ 0°C

(0.02°F@32°F)

128166 01 2012-11-12 13

Stability2) : typ. 0.016°C @ 0°C
(0.029°F@32°F)

Self heating effect : 0.06°C/mW / 0.11°F/mW
Diameter : OD4 mm
Immersion depth :

(912/915/935)

: 60 mm (2.36 in)

(966) : 100 mm (3.94 in)

Media compatibility : INCONEL 600

1)When used in the range -90°C to 125°C / -130°F to 257°F (STS­150 A 912), –25°C to 155°C / -13°F to 311°F (STS-150 A 915

to 350°C / 32°F to 662°F (STS-150 A 935) or 0°C to 660°C / 32°F
to 1220°F (STS-150 A/B 966).

2)Stability when exposed to maximum temperature for 100 hours.
Stability will depend on actual use of the probe.

), 0°C

Response time :
(912/915/935)

(966) :

Recommended
meas. current : 1 mA

14 2012-11-12 128166 01

: (50%)

(90%)
(50%)

(90%)

= 7 sec.
=18 sec.

= 8 sec.
=26 sec.

Connection :
(912/915/935)

: Cable with REDEL connector

(966) : LEMO plug with build in
memory is standard

Certificate:
If the STS-150 A reference probe is supplied with a

certificate, the calibration is carried out as
recommended below according to the ITS 90
temperature scale.

The STS-150 A type 912 probe is as standard
calibrated in the range :
–90°C to 125°C (-130°F to 257°F).

The STS-150 A type 915 probe is as standard
calibrated in the range :
–25°C to 155°C (-13°F to 311°F).

The STS-150 A type 935 probe is as standard
calibrated in the range :
0°C to 350°C (32°F to 662°F)

128166 01 2012-11-12 15

The STS-150 A type 966 probe is as standard
calibrated in the range :
0°C to 660°C (32°F to 1220°F)

It is recommended to calibrate in minimum 3 – 6
calibration points (depending on the temperature
range) above 0°C and in minimum 2 calibration points
beneath 0°C.

16 2012-11-12 128166 01

UK

AMETEK Calibration Instruments

Tel [phone]
[e-mail]

France

AMETEK S.A.S.

Tel [phone]
[e-mail]

Germany

AMETEK GmbH

Tel [phone]
[e-mail]

Denmark

AMETEK Denmark

Tel [phone]
[e-mail]

USA

AMETEK Mansfield & Green

Tel [phone]
[e-mail]

India

AMETEK Instruments India Pvt Ltd.

Tel [phone]
[e-mail]

Singapore

AMETEK Singapore Pte Ltd

Tel [phone]
[e-mail]

China

AMETEK Inc. - Shanghai

Tel [phone]

AMETEK Inc. - Beijing

Tel [phone]

AMETEK Inc. - Guangzhou

Tel [phone]
[e-mail]

www.jofra.com

Information in this document is subject to change without notice. ©2012 by AMETEK, Inc., www.ametek.com. All rights reserved.

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