SEM210 Temperature Transmitter Datasheet

SMART UNIVERSAL TEMPERATURE TRANSMITTER

SEM210 SERIES

UNIVERSAL INPUT

GALVANICALLY ISOLATED

10 YEAR WARRANTY

ATEX APPROVED

EASILY RE-PROGRAMMED

IN LOOP INTERROGATION

HIGH ACCURACY AND STABILITY

I N T R O D U C T I O N

The SEM210 is a second generation ‘Smart’ Universal input 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 sensor type and range are easily programmed using a PC and a simple Windows based software program. Connection from the PC serial port is made using the same wires that carry the (4 to 20) mA output signal. This simplifies connection and allows for re-programming or interrogation of the SEM210 while it is installed in the loop. Sensors can be changed without the need for re-calibration.

Isolation is a standard feature, removing all ground loop effects as the input is electrically and physically isolated from the loop power supply (see the schematic below). The use of two micro-processors results in error free data transmission across the isolation barrier.

The very small size coupled with the versatility of this universal transmitter make it the ideal choice for every temperature measurement application, resulting in lower inventory, greater operational flexibility and, in common with our other products, a low cost of ownership. SEM210X also offers ATEX approved option.

I N T R O D U C T I O N

INPUTS

Pt100 Platinum resistance sensors, Thermocouples, millivolts or

Slidewire sensors may be connected to the unit. The Type ”X“ option allows for custom sensor characterisation. This option is factory pre-configured to customers specification.

The Process Variable may be filtered to remove incoming signal noise using one of four settings. If the ‘Adaptive’ function is selected the filter continuously adjusts to the incoming signal to noise ratio in order to choose an appropriate level of filtering. In this way a slowly changing input can be heavily filtered but if the signal goes through a sudden change the filter quickly reduces allowing a rapid response, other settings are; off, 2 seconds, 10 seconds.

A user programmable offset is available to remove any system errors that may be present and sensor referencing enables the transmitter to be accurately matched to a particular sensor

CURRENT OUTPUT

In normal operation the current output varies between 4 and 20 mA.

If the input sensor develops a fault, or the software in either of the two micro- processors detects an error, then the current output is driven either upscale (greater than 20 mA) or downscale (less than 4 mA) depending upon the sense of the burnout parameter selected.

COMMS OPERATION

The transmitter is accessed via the comms interface adaptor for re-programming or examination of the process variable and status information. The interface adaptor converts the special communications signals on the transmitter power connection cables to the standard RS232 in order to connect directly to a PC serial port. There are two methods of connecting the interface adaptor to the transmitter i.e. using the adaptor’s own power supply or using the power from an existing loop.

BLOCK DIAGRAM

A

D

C

ADC

µP

ADC PSU

Main

µP

V+

Comms

DAC

V-

SMART UNIVERSAL TEMPERATURE TRANSMITTER

S P E C I F I C AT I O N S @ 2 0 ° C

INPUT SENSORS AND RANGES

RTD (Pt100)

Sensor Range

Minimum Span*¹

Linearisation

Basic Measurement Accuracy

Thermal Drift

Excitation Current

Maximum Lead Resistance

Lead Resistance Effect

Zero

Span

Basic Measurement Accuracy*²

Linearisation

Cold Junction Error

Cold Junction Tracking

Cold Junction Range

Thermal Drift Zero

Span

MILLIVOLTS

Input

Range

Characterisation

Minimum Span*¹

Basic Measurement Accuracy*²

Input Impedance

Thermal Drift Zero

Span

SLIDEWIRE

Input

Resistance Range

Characterisation

Minimum Span*¹

Basic Measurement Accuracy*²

Temperature Drift

OUTPUT

Output Range

Max Output

Accuracy

Voltage Effect

Thermal Drift

Supply Voltage

Max. Output Load

(-200 to 850) °F, (18 to 390 Ω)

25 ºC

BS-EN60751

BS1904

DIN43760

JISC 1604

CUSTOM [X]*³

± 0.01 % FRI ± 0.05 % rdg

FRI = Full Range Input

0.008 °C/°C

0.01 %/°C

(300 to 550) µA

50 Ω/leg

0.002 °C/ Ω

± 0.04 % FRI ± 0.04 % rdg or

0.5 ºC (whichever is greater)

BS 4937/EC 584-3

± 0.5 °C

0.05 °C/°C

(-40 to 85) ºC

0.1 µV/°C

0.01 %/°C

Voltage source

(-10 to 75) mV

Linear Custom [X]*³

(5th Order Polynomial)

5 mV

±10µV ±0.07% rdg

10 M Ω

0.1 µV/°C

0.01 %/°C

3 wire potentiometer

(10 to 390) Ω [End to End]

(Larger values can be accommodated by fitting an external resistor)

Linear Custom [X]*³

(5th Order Polynomial)

5 %

0.1 %

0.01 %/ºC

< 3.8 to > 20.2 mA

23 mA

± 5 µA

0.2 µA/V

1 µA/°C

(10 to 35) V

[(V supply -10)/20] K

(700 Ω @ 24 V)

Ω

GENERAL SPECIFICATION

Input/Output Breakdown Isolation 500 V AC rms

Update Time

Response Time (Filter OFF)

Filter Factor

250 mS maximum

< 1 s

Programmable: Off, 2 s, 10 s or

Warm up

Stability

Adaptive

120 s to full accuracy

0.1 % FRI or 0.1 °C/year

APPROVALS

EMC

ATEX

ENVIRONMENTAL

Ambient Operating Range

Ambient Storage Temperature

Ambient Humidity Range

I.S. Version

ENCLOSURE

Material

Flammability

BS EN61326

II 1G EEx ia IIC T4-T6

(-40 to 85) ºC

(-50 to 100) ºC

(10 to 90) % RH non-condensing

(0 to 100) % RH

NORYL TM

SEI UL94-V1

COMMUNICATIONS

PC Interface

Comms Protocol

Data Rate

Minimum Output load

Maximum Cable Length

Configurable Parameters

RS 232 via interface adapter

ANSI X 3.28 1976

1200 baud

100 Ω for ‘In loop’ programming

3280 feet (1000 m)

Sensor type: Burnout:°C/°F

Output Hi/Lo: Filter: Tag:

User offset

RCPW/ Windows based PC tool Software

*NOTES:

1. Any span may be selected but full accuracy is only guaranteed for spans greater than the minimum recommended.

2. Basic Measurement Accuracy includes the effects of calibration, linearisation and repeatability.

3. Customer linearisation is available pre-programmed at the factory, contact sales office for details.

4. Consult thermocouple reference standards for practical temperature.

M E C H A N I C A L D E TA I L S

(All dimensions in mm)

21 mm

05.5

Fixing

Holes

33mm

Centres

043 mm

Weight 25 g Standard version

40 g I.S. version

SMART UNIVERSAL TEMPERATURE TRANSMITTER

C O N N E C T I O N S

ELECTRICAL CONNECTIONS

Connections to the transmitter are made via the screw terminals provided on the top face. The transmitter is protected against reverse connection so that incorrect connection of the output wires results in near zero current flow in the loop.

SEM210 CONNECTIONS

+

Slidewire mV T/C Pt100

LOAD

24 V

H A Z A R D O U S A R E A

Available for mounting in flammable atmospheres approved to EEx ia IIC T4-T6, FM3610 or Ex NII.

SEM210X TRANSMITTER

SEM210X

Transmitter

Hazardous Area Safe Area

Sensor

1 2 3 4

DM700X

A P P L I C AT I O N S

USING THE CONFIGURATOR MODULE WITH POWER SUPPLY

+

No sensor necessary

–

SEM210

CONFIGURATION

MODULE

PSU

RS232

Zener

Barrier

USING EXISTING LOOP POWER

No sensor necessary

+

SEM210

–

24 VDC

Minimum load 100 Ω

Maximum load 500 Ω

LOAD

CONFIGURATION

MODULE

RS232

SMART UNIVERSAL TEMPERATURE TRANSMITTER

SEM210 Showing the RCPW-210 configuration kit and computer

ASSOCIATED PRODUCTS:

SEM104 The SEM104 is a low cost (4 to 20) mA transmitter for use with standard Pt100 platinum resistance sensors in the size of a standard DIN terminal block.

SEM205P

SEM203

SEM205P is a second generation "Smart" Head

Mount temperature transmitter which accepts

Pt100 temperature sensors and generates an industry standard (4 to 20) mA transmission signal.

A simple push button operation ranges and calibrates the SEM203 (4 to 20) mA temperature transmitter, eliminating the need for soldering links, potentiometers or PC's.

SEM1000

SEM1020

SEM1100

SEM1200

SEM1300

SEM1400

Analogue signal Isolator

Loop Booster

Line powered process isolator

Signal Splitter

Power supply unit

Loop powered trip amplifiers

SEM1503/1504 Pt100 transmitters

SEM1500TC Isolating TC transmitter

DM600

DM700

The DM600 series of Battery Powered Field

Indicators accept either a RTD sensor or a thermocouple sensor, depending upon the model, and displays the temperature on a 4 digit LCD display.

The DM700 series is a 4 Digit LED Loop Powered

Field Indicator. It is available with a choice of

(4 to 20) mA, RTD or Thermocouple input.

SENSORS

ACCESSORIES

A complete range of sensors and accessories are available:

Platinum resistance temperature detectors

Thermocouples

Thermistors

DIN Rail Mounting kits are available in “Top Hat” and “G” profiles.

ORDER CODE

SEM210 Standard Unit

SEM210X

Intrinsically Safe Version ATEX, ExN and

FM approved

SEM210N Approved to ExN II

RCPW-210-UK

RCPW-210-EUR

RCPW-210-USA

RCPW-210-AUS

Programming kit for SEM210 comprising

I.F adaptor box, RCPW* software, PSU and carry case. UK use.

For European use

For use in USA/Canada

For use in Australia

*Free updates and demo software available from our website.

Status Instruments Ltd

Green Lane Business Park

Green Lane, Tewkesbury

Gloucestershire, UK

GL20 8DE

Tel: +44 (0)1684 296818

Fax: +44 (0)1684 293746

Email: [email protected]

Website: www.status.co.uk

52-215-2160-02 Issue 02