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

128166 01 2012-11-12 3
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

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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]

128166 01 2012-11-12 5
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
fluids (e.g. at re-calibration) the
enclosed protection tube must be
used.
The probe must always be protected
against any mechanical damage.
The probe must never be exposed to
mechanical shock effects.

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Avoid thermal shock
Any bending of the probe may cause
permanent damage
Never use power or tools to place
the probe.

128166 01 2012-11-12 7
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

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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 specific for the probe is stated
on the certificate).
4.2 Connections
The pin-layout is as follows:
Pin 1 : RTD I-
Pin 2 : RTD S-
Pin 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.
61
2
5
3
4

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

128166 01 2012-11-12 11
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.

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6.0 Maintenance
The probe does not require specific maintenance
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

128166 01 2012-11-12 13
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)
Hysteresis1) : 0.01°C @ 0°C
(0.02°F@32°F)

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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 (STS-
150 A 912), –25°C to 155°C / -13°F to 311°F (STS-150 A 915), 0°C
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.
Response time :
(912/915/935) : (50%)= 7 sec.
(90%)=18 sec.
(966) :
(50%)= 8 sec.
(90%)=26 sec.
Recommended
meas. current : 1 mA

128166 01 2012-11-12 15
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)

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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.

UK
AMETEK Calibration Instruments
Tel [phone]
[email protected]
France
AMETEK S.A.S.
Tel [phone]
[email protected]
Germany
AMETEK GmbH
Tel [phone]
[email protected]
Denmark
AMETEK Denmark
Tel [phone]
[email protected]
USA
AMETEK Mansfield & Green
Tel [phone]
[email protected]
India
AMETEK Instruments India Pvt Ltd.
Tel [phone]
[email protected]
Singapore
AMETEK Singapore Pte Ltd
Tel [phone]
[email protected]
China
AMETEK Inc. - Shanghai
Tel [phone]
AMETEK Inc. - Beijing
Tel [phone]
AMETEK Inc. - Guangzhou
Tel [phone]
[email protected]
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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