SEM203/P

SEM203P IN HEAD PT100 TEMPERATURE TRANSMITTER 

- **SUITABLE FOR PT100 TEMPERATURE SENSORS** 

- **(4 to 20) mA OUTPUT** 

- **PUSH BUTTON PROGRAMMABLE** 

- **HIGH STABILITY** 

- **OUTPUT CURRENT TRIM** 

## **INTRODUCTION** 

The SEM203P is a push button configurable in-head transmitter that accepts PT100 temperature sensors and converts sensor output over a configured range to a standard industrial (4 to 20) mA transmission signal. 

A simple push button operation allows the user to not only select the desire range and burnout direction but also perform user trim at both (4 and 20) mA points. 

If required, the desired range can be specified at the time of order, removing the need for user configuration. If the range is not specified, then the transmitter will be shipped with the default range of (0 to 100) °C . 

## **FEATURE HIGHLIGHTS** 

## **PUSH BUTTON CONFIGURATION** 

The SEM203P can be ranged against a probe held at high and low range values or by using a resistive representation of the required temperature using a simple “teach” method. Burnout direction can also be set using the same push button. 

A zero and span trim function is also incorporated into the SEM203P to give maximum flexibility. 

## **SENSOR BURN OUT DETECTION** 

If a sensor wire is broken or becomes disconnected the SEM203P output will automatically go to its user defined level upscale or downscale and the LED illuminates. 

## **STABILITY** 

The SEM203P in head transmitter incorporates the latest digital technology to ensure accurate, low drift performance. 

D2440-01-08 CN5547 SEM203P Data sheet, Page 1 of 3 

SEM203P IN HEAD PT100 TEMPERATURE TRANSMITTER 

**INPUT SPECIFICATIONS @20°C** 

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|---|---|---|---|---|---|---|---|
|Type / Function|Range|/ Description|Accuracy/ Stability|
|PT100 2 or 3 wire|(-200|to 850) °C|±|0.2|°C ±|0.05 % of reading|*2|
|Thermal drift|Zero at 20|°C|±0.02°C/°C|
|Minimum span|25|°C|*1|
|Linearization|BS EN 60751(IEC 751) standard|
|/ JISC 1604|
|Excitation current|Approximately|1|mA|
|Lead resistance effect|0.002|°C / Ohms|
|Maximum lead resistance|20 Ohms per leg|

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*1 Any span may be used; full accuracy is only guaranteed for spans greater than the minimum recommended 

*2 Basic measurement accuracy includes the effects of calibration, linearization and repeatability 

**OUTPUT SPECIFICATIONS @20°C** 

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|---|---|---|---|---|---|
|Type / Function|Range|/ Description|Accuracy/|Stability/|Notes|
|Two wire current|(4 to 20) mA|(mA output /2000) or 5 uA|
|(Whichever is the greater)|
|Thermal drift|Zero at 20|°C|2 uA /°C|
|Maximum output current|21.5 mA|In high burnout condition|
|Minimum output current|< 3|.9 mA|In low burnout condition|
|Loop voltage effect|0.2 uA / V|
|Maximum output load|[(V supply – 10)/20] KΩ|700 Ω|@ 24 V DC|
|Loop supply|(10 to 30) V DC|SELV|

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## **PUSH BUTTON USER INTERFACE** 

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||||
|---|---|---|
|Type/ Function|Range/ Description|Notes|
|Sensor configuration|Temperature range for (4 to|
|20) mA retransmission|°C or °F against probe or resistance|
|Burnout current|Upscale or downscale|
|Trim output current|At 4.0 mA and 20.0 mA|

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|---|---|---|
|GENERAL|
|Function|Description|
|Update time|500 ms|
|Response time|1 s|
|Start-up time|4 s (mA out < 4 mA during start up)|
|Warm up time|60 s|to full accuracy|
|Default configuration|PT100 (0 to 100) °C upscale burnout|

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## **ENVIRONMENTAL** 

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|---|---|---|---|
|Function|Description|
|Ambient temperature|Operating/|Storage (-40 to 85) °C|
|Full accuracy only between (-30 to 75)°C|
|Ambient Humidity|Operating/Storage (10 to 90) %RH non-condensing|
|Protection|requirement|>= IP65|recommended|
|Configuration ambient|20|°C|to maintain specification|

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D2440-01-08 CN5547 SEM203P Data sheet, Page 2 of 3 

## SEM203P IN HEAD PT100 TEMPERATURE TRANSMITTER 

|**MECHANICAL**|**MECHANICAL**|
|---|---|
|**Function**|**Description**|
|Dimensions|43 mm diameter;21 mm height|
|Fixingcentres|2 x 5 mm holes on 33 mm centres|
|Centre hole|4.5 mm hole for wiringaid|
|Weight|31g (encapsulated)|



## **APPROVALS** 

|**APPROVALS**|**APPROVALS**|
|---|---|
|EMC|BS EN 61326: Note - Sensor input wires to be less than 3.0 m to comply|
|Ingressprotection|BS EN 60529|
|RoHS|Directive 2011/65/EU|
|EAC|Please refer to www.status.co.uk|
|DNV|Please refer to www.status.co.uk|



## **ORDER CODE** SEM203P ~~a~~ 

MECHANICAL 

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SIDE  VIEW  BASE VIEW<br>Ø 43.0 mm<br>33.0 mm<br>CENTRES<br>21.0 mm<br>**----- End of picture text -----**<br>


Fixing holes 2 x Ø5.5 mm, Centre hole Ø4.5 mm 

## **ACCESSORIES** 

Head options Please refer to www.status.co.uk Probe options Please refer to www.status.co.uk 

To maintain full accuracy annual calibration is required contact support@status.co.uk for details The data in this document is subject to change. Status Instruments assumes no responsibility for errors 

Status Instruments Ltd Status Business Park Gannaway Lane, Tewkesbury Gloucestershire, UK GL20 8FD 

Tel: +44 (0)1684 296818 Fax: +44 (0)1684 293746 Email: sales@status.co.uk Website: www.status.co.uk D2440-01-08 CN5547 SEM203P Data sheet, Page 3 of 3