Ametek JOFRA STS-050 A/B User manual

User manual
JOFRA STS-050 A/B
Probes 250/350/500/901
Copyright 2006 AMETEK DENMARK A/S

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Table of contents: Page
1.0 General information ......................4
2.0 Introduction....................................5
3.0 Functionality ..................................6
3.1 Functional description ................. 6
3.2 Connections ................................ 6
3.3 Serial number.............................. 8
4.0 Operation .......................................9
4.1 Operation area ............................ 9
5.0 Maintenance.................................10
6.0 Technical specifications .............11

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1.0 General information
This manual is only effective for the following
products:
JOFRA STS-050 A/B - 250 mm
JOFRA STS-050 A/B - 350 mm
JOFRA STS-050 A/B - 500 mm
JOFRA STS-050 B - 901 (90°)
The products are manufactured by:
AMETEK DENMARK A/S
GYDEVANG 32-34
DK-3450 ALLERØD
DENMARK
TEL: [phone]
FAX: [phone]

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2.0 Introduction
The JOFRA STS-050 A/B probes are designed for
fast and traceable calibration and temperature
measuring with AMETEK DTI050, and are ready for
use.
Please read this manual carefully before use, to
obtain maximum value of your calibration system.
Warning
• Read this manual before use.
• Do not use in hazardous area.
• Handle carefully.
• Never exceed temperature range

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3.0 Functionality
3.1 Functional description
The probe can be used for measuring temperature
in the range-50°C to 400°C (-58°F to 752°F).
The JOFRA STS-050 A/B probes may be supplied
with certificates for a limited temperature range.
The resistance of the JOFRA STS-050 A/B probe is
converted to temperature according to IEC-751 (ITS-
90) (calculated coefficients specific for the probe is
stated on the certificate).
3.2 Connections
The probe is delivered with a connecting cable.
The pin-layout is as follows:
Pin 1 : RTD I-/ CJC Pt1000 –
Pin 2 : RTD S-/ TC V-
Pin 3 : RTD S+/ TC V+
Pin 4 : RTD I+/ CJC Pt1000 +
Pin 5 : Memory GND
Pin 6 : Memory I/O

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The figure below is shown from the connector side
of the probe connector.
61
2
5
3
4

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

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4.0 Operation
4.1 Operation area
All the probes are intended for use in areas which
meet the following:
Ambient temperature
range : -20°C to 70°C (-4°F to 158°F)
Humidity : 0% to 90%
Protection class : IP 50
Warning
Do not use in hazardous areas.

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5.0 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

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6.0 Technical specifications
Probe specifications:
Sensor type : Platinum sensor Pt100.
α= 0.00385
Probe length : 250 mm (9.8 in)
350 mm (13.8 in)
500 mm (19.7 in)
180 mm (7.1 in) (90° Angle)
Temperature range : -50°C to 400°C
(-58°F to 752°F)
Accuracy
Repeatability : 0.005°C (0.009°F)
Hysteresis1) : 0.01°C @ 0°C
(0.02°F@32°C)
Stability2) : typ. 0.014°C @ 0°C
(0.025°F@32°F)
Self heating effect : 0.04°C/mW / 0.07°F/mW
Diameter : A: OD4 mm
B: OD1/4”
Immersion depth : A: 60 mm (2.36 in)
B: 90 mm (3.54 in)
Media compatibility : AISI316
1)When used in the range –50°C to 400°C (-58°F to 752°F)

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2)Stability when exposed to 400°C (752°F) for 100 hours.
Stability will depend on actual use of the probe.
Response time : A: τ(50%) = 7 sec.
τ(90%) =17 sec.
B:
τ(50%) = 11 sec.
τ(90%) = 30 sec.
Recommended
meas. current : 1 mA
Connection : Redel plug with build in
memory is standard
Certificate:
All probes are supplied with an traceable certificate
according to the ITS 90 temperature scale. The
probes are as standard calibrated in the range –
45°C to 400°C (-49°F to 752°F).
Calibration is carried out at:
•-45°C/-49°F
•-20°C/-4°F
•0°C/32°F
•100°C/212°F
•250°C/482°F
•400°C/752°F