Status Instruments SEM310 Manuale utente
D2272-02-05 CN5219 SEM310 WEB User Guide
SEM310
HART
®
IN HEAD TEMPERATURE TRANSMITTER
Status Instruments Ltd, Status Business Park, Tewkesbury, Glos. GL20 8FD
Tel: +44 (0)1684 296818 Fax: +44 (0)1684 293746
Email: sales@status.co.uk Web: www.status.co.uk
INDEX
SECTION
CONTENTS PAGE NO.
1.0 DESCRIPTION 1
2.0 SPECIFICATION
1-5
3.0 INSTALLATION 6-7
D2272-02-05 CN5219 SEM310 WEB User Guide
1.0 DESCRIPTION
The SEM310 is a HART in head temperature transmitter that accepts any commonly used
temperature sensor, slidewire transducer or millivolt signal and converts the output to the industry
standard (4 to 20) mA transmission signal.
The software package M-CONFIG with a Hart Modem or a Hart Communicator with the necessary
"Device Description" can be used to program the unit. Separate instructions are available for
programming the transmitter using M-CONFIG.
2.0 SPECIFICATION @ 20 °C
2.1 RTD INPUT (Pt100) 2, 3 OR 4 WIRE
Sensor Range (-200 to 850) °C (18 to 390) Ω
Minimum Span
1
25 °C
Linearisation BS EN60751 (IEC 751) BS 1904
(DIN 43760), JISC 1604, CUSTOM [X]
3
Max Lead Resistance 50 Ωper leg (balanced for 3 wire)
Basic Measurement Accuracy
2
±0.01 % FRI ±0.07 % Rdg
(FRI = Full Range Input)
RTD Excitation Current (300 to 500) µA
Thermal Drift Zero 0.008 °C / C
Span 0.01% / °C
2.2 THERMOCOUPLE INPUT
Thermocouple Type Measuring Range
4
°C Minimum Span
1
°C
TC Type K -200 to 1370 50
TC Type J -200 to 1200 50
TC Type T -210 to 400 25
TC Type R -10 to 1760 100
TC Type S -10 to 1760 100
TC Type E -200 to 1000 50
TC Type L -100 to 600 25
TC Type N -180 to 1300 50
TC Type [X]
3
User defined
Linearisation BS EN60584-01 BS 4937/IEC 584-1
(multi segment Polynomials)
Basic Measurement Accuracy
2
0.04 % FRI ±0.04 % RDG or 0.5 °C
(whichever is greater)
Thermal Drift Span 0.01 % / °C
Cold Junction Error ±0.5 °C
Cold Junction Tracking 0.05 °C / °C
Cold Junction Range (-40 to +85) °C
Page1
2. 3 MILLIVOLT INPUT
Input Voltage Source
Range (-10 to 75) mV
Characterisation Linear, Custom [X]
3
Minimum Span 5 mV
Basic Measurement Accuracy
2
±10 µV ±0.07 % Rdg
Input Impedance 10 MΩ
Thermal Drift Zero 0.1 µA / °C
Span 0.01 % / °C
2.4 SLIDEWIRE INPUT
Input 3 Wire potentiometer
Resistance Range (10 to 390) Ω(End to End) Larger values can be
accommodated by external resistor, see Figure 4.
Characterisation Linear, Custom [X]
3
Minimum Span
1
5 % of FRI
Basic Measurement Accuracy
2
0.1 % FRI
Thermal Drift Zero 0.005 % of span / °C
Span 0.01 % / °C
Range (0 to 100) %
2.5 OUTPUT
Burnout Levels Low 3.75 mA , High 21.5 mA
Input out of Range Low 3.8 mA, High 20.5 mA
Output range (4 to 20) mA, Min. 3.75 mA, Max. 21.5 mA
Accuracy ±5 µA
Thermal Drift 1 µA / °C
Supply Voltage
5
(10 to 40) V
Supply Voltage effect 0.2 µA / V
Maximum output load [(Vsupply-10)/21.5] KΩ. 250 Ωminimum loop load for
correct HART operation.
5
Fig 1
Page 2
24 V
15 V
30 V
40 V
660
500
250 1400
10 V
0
NO HART
OPERATION
NOT RECOMMENDED
SUPPLY
VOLTAGE
MAXIMUM LOAD ( Ω )
OPERATION
D2272-02-05 CN5219 SEM310 WEB User Guide
Notes
1
Any span may be selected but full accuracy is only guaranteed for spans greater than the
minimum recommended.
2
Includes the effect of calibration, linearisation and repeatability.
3
Custom characterisation is available pre-programmed at the factory. Contact your nearest
Sales office.
4
Consult Thermocouple reference tables for practical temperature ranges.
5
For supply voltages over 30V, a minimum loop load of 500 Ωis necessary.
2.6 GENERAL
Input/Output Isolation 500 VAC
Time Constant (Filter Off) 0.5 secs (to 90 % of final value)
Filter Factor Programmable Off / selectable between 1 and 32 seconds / or Adaptive
Warm-up Time 2 minutes to full accuracy
ENVIRONMENTAL
Ambient Operating Range (-40 to 85) °C
Ambient Storage Temperature (-50 to 90) °C
Ambient Humidity Range (10 to 95) % RH non condensing
EMC BS EN 61326
MECHANICAL
Enclosure DIN standard terminal block size
Material ABS
Weight 43 g
Dimensions 44 mm diameter x 24 mm
Flammability UL94-V0
2.7 SEM310X VERSION - FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES
2.7.1 ATEX CERTIFICATE
The SEM310X, has been issued with a EC-type examination certificate, confirming compliance with
the European ATEX directive 94/9/EC for :-
Intrinsic safety II 1 G EEx ia IIC T4…T6.
The equipment bears the Community Mark and subject to local codes of practice, may be installed in
any of the European Economic Area (EEA) member countries. The SEM310X housing is coloured
light blue to identify the equipment as suitable for Hazardous area use. The equipment must be
installed and maintained in accordance with local requirements for electrical equipment for use in
potentially explosive atmospheres, eg EN60079-14 & EN60079-17. This instruction sheet describes
installation which conforms with BS EN60079-14 & BS EN60079-17 Electrical Installation in
Hazardous Areas. When designing systems outside the UK, the local Code of Practice should be
consulted.
Page 3
2.7.1 ATEX MARKING
COMMON INFORMATION
Manufacturer Status Instruments Ltd
Type Number SEM310X
CE marking 0891
Explosive Protection Marking
(Type ia) Intrinsic Safety
II 1 Equipment Group and category
G Type of explosive atmosphere (Gas)
EEx ia IIC T4..T6 Intrinsic safety information
TRL03ATEX21013X Certificate reference
2.7.3 SPECIAL CONDITIONS FOR SAFE USE
As indicated by the Certificate Reference "X" suffix, special conditions apply for safe use for
intrinsic safety applications. They are as follows:-
ZONES, GAS GROUPS, AND T RATING.
When connected to an approved system the SEM310X may be installed in:-
Zone 0 explosive gas air mixture continuously present
Zone 1 explosive gas air mixture likely to occur in normal use
Zone 2 explosive gas air mixture not likely to occur and if it does, it will only occur for a
short time.
Be used in gas groups;-
Group A propane
Group B ethylene
Group C hydrogen
Page 4
II 1 G EEx ia IIC T4-T6. TRL 03ATEX21013X
FACTORY MUTUAL: INTRINSICALLY SAFE APPARATUS
FOR CL1,DIV1,GP ABCD T4@85°C;T5@50°C;T6@40°C
FOR INSTALLATION AND MAINTENANCE SEE CONTROL
DRAWING SG4-3770-01
0891
TYPE: Pt100
RANGE: 0-100°C
SEM310X HART SER No. 000000 - 0001
R
www.status.co.uk
D2272-02-05 CN5219 SEM310 WEB User Guide
Allowable Temperature classification / ambient temperature:-
Intrinsic safety (Type ia)
Class Ambient Temperature Range
T1 450 °C (-40 to 85) °C
T2 300 °C (-40 to 85) °C
T3 200 °C (-40 to 85) °C
T4 135 °C (-40 to 85) °C
T5 100 °C (-40 to 50) °C
T6 85 °C (-40 to 40) °C
ENVIRONMENTAL PROTECTION
This equipment must be housed in an enclosure which provides a degree of protection of at least
IP54. The enclosure must be suitable for the atmosphere and environment in which it is installed. (eg
If of a plastic material, must be resistant to chemical corrosion, UV light, temperature, Humidity, etc).
MAINTENANCE
This intrinsically safe equipment contains no user serviceable, adjustable or replaceable parts. No
attempt should be made to repair a faulty SEM310X transmitter, all units must be returned to the
manufacture for repair or replacement. Attempting service or replacement of parts may invalidate the
explosive protection features of the equipment.
CONNECTION DIAGRAM
They equipment must be electrically connected as shown below:-
Fig 2
SEM310X Working Parameters
Ui 30 V
I i 100 mA
Pi 750 mW
Ci 10 nF
Li 0 H
Page 5
3.0 INSTALLATION
3.1 MECHANICAL
The transmitter is mounted on standard 33 mm fixing centres and will fit a DIN standard termination
head. The transmitter should be installed with adequate protection from moisture and corrosive
atmospheres. (Refer to section 2.7.3 Environmental Protection for SEM310X)
A Ø6.3 mm hole is provided through the centre of the transmitter to allow sensor wires to be threaded
through the transmitter body direct to the input screw terminals. The screw terminals have been
designed to allow all connection wires to enter from an inner or an outer direction.
Care must be taken when locating the transmitter to ensure the ambient temperature remains within
the specified operating range.
Fig 3 (All Dimensions in mm)
3.2 ELECTRICAL
Connections to the transmitter are made to the screw terminals provided on the top face. No special
wires are required for the output connections, but screened twisted pair cable is the most suitable for
long runs. It is recommended that screened cable is used for the sensor connection wires for cable
runs greater than one metre. All input wires must have the same core diameter to maintain equal lead
resistance in each wire.
Figure 4 shows the method of connection to provide a (4 to 20) mA current loop output. The output
loop has a voltage power supply used to provide loop excitation. The load symbol represents other
equipment in the loop, normally indicators, controllers or loggers. Care must be taken when designing
the (4 to 20) mA circuit to ensure that the total voltage requirements of all the equipment in the loop
added together, does not exceed the power supply voltage. If a number of instruments are connected
in the loop, ensure that only one instrument is tied to ground. Grounding the loop at two points will
cause a short circuit of part of the loop leading to measurement errors.
To guarantee CE compliance, sensor leads must be less than 3 metres long and the transmitter
housing should prevent access to the transmitter during normal operation.
Page 6
HAZARDOUS AREA SAFE AREA
SENSOR
3
4
5
62
1
SEM310X BARRIER
Vo 30 V
Io 100 mA
Po 750 mW
DC
SUPPLY
+
_
EARTH
24.00
Ø44.00
Ø33.00 C ntr s
C ntr hol Ø6.3
D2272-02-05 CN5219 SEM310 WEB User Guide
* Resistance Range, (10 to 390) Ω(End to End) Larger values can be accommodated by fitting 390 Ω
resistor (not supplied) as shown below.
(Refer to Fig 2 connection diagram for SEM310X)
Fig 4
Page 7
ALSO AVAILABLE:
•
Smart In Head Temperature Transmitters
•
Din Rail Mounted Temperature Transmitters
•
Panel & Field Temperature Indicators
•
Temperature Probes
•
Trip Amplifiers
•
Signal Conditioners
•
And many other products
For further information on all products:
Status Instruments Ltd, Status Business Park, Tewkesbury, Glos. GL20 8FD
Tel: +44 (0)1684 296818 Fax: +44 (0)1684 293746
Email: sales@status.co.uk Web: www.status.co.uk
Page 8
2 1
1
Pt100
4 5
6
HART
Temp.
Tx
(4 to 20) mA
+
T/
2
3
-+
-
Pow r
Supply
Load
3 4 5 6
Pt100
3 3 34 64
4
(10 to 40) VDC
mV
Th rmocoupl Millivolt Slid wir
Pt100 2 wir
conn ction
Pt100 3 wir
conn ction
3 4 63 6
390 Ω
(4 to 20) mA
+- + -
+ -
Pt100 4 wir
conn ction
Pt100 Pt100
See Note
5
*
Indice
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