SEM104PT100

SEM104P ANALOGUE IN HEAD TEMPERATURE TRANSMITTER 

## SEM104P 

   - **Pt100 INPUT** 

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

   - **ANALOGUE TECHNOLOGY** 

- “ys ~~<<<~~ **HIGH STABILITY + FAST RESPONSE TIME** 

## **USER RE-RANGEABLE WITH LINKS** 

## **INTRODUCTION** 

The SEM104 is a (4 to 20) mA temperature sensor transmitter which can be housed in a head mount DIN standard enclosure. 

The SEM104P is for Pt100 inputs and is field rangeable if necessary, using links on the printed circuit board and the use of on-board SPAN and ZERO potentiometers. A wide selection of compatible probe assemblies are available with various immersion lengths and process connections `.` 

The same two wires that power the transmitter also carry the transmission current such that only two connections are required. This reduces installation and wiring costs whilst the nature of current transmission provides superb noise immunity and ensures that line impedances, thermoelectric effects etc. do not introduce errors. 

## **FEATURE HIGHLIGHTS** 

## **LOOP POWERED** 

The instrument is powered by the loop current; no additional power supply is required. 

## **ANALOGUE PERFORMANCE** 

The SEM104P uses a proven and reliable analogue design on the input and output sections of its circuits. This leads to a very fast and smooth response time as there is no analogue-to-digital and digital-to-analogue conversions to be carried out during input monitoring through to retransmission of the signal. 

As no microcontrollers or digital ICs are used on the SEM104P, it makes it suitable for applications where digital components are to be avoided. 

The SEM104P uses resistor pots to allow the user to “trim” the 4 mA and 20 mA range points for maximum accuracy. 

## **HIGH STABILITY** 

The SEM104P uses high precision and thermally stable components throughout, giving it very stable performance over its operating range. 

D2075-02-04 CN5719 SEM104P Datasheet, Page 1 of 3 

SEM104P ANALOGUE IN HEAD TEMPERATURE TRANSMITTER 

**INPUT                                                                                                                                 SPECIFICATIONS @20°C** 

|**INPUTSPECIFICATIONS @20°C**|**INPUTSPECIFICATIONS @20°C**|**INPUTSPECIFICATIONS @20°C**|**INPUTSPECIFICATIONS @20°C**|
|---|---|---|---|
||**Type/Function**|**Range/Description**|**Accuracy/Stability**|
||Pt100, 3 wire|BS EN 60751 DIN43760|± 0.2°C ± 0.2 % of reading|
||Maximum range|(-100 to 600)°C||
||Maximum span|500°C||
||Minimum span|25°C||
||Thermal drift|Zero at 20°C|± 0.01°C/°C|
|||||



|**OUTPUTSPECIFICATIONS @20°C**|**OUTPUTSPECIFICATIONS @20°C**|**OUTPUTSPECIFICATIONS @20°C**|
|---|---|---|
|**Type/ Function**|**Range/Description**|**Accuracy/Stability/Notes**|
|Two wire current|(4 to 20) mA|(mA output /2000) or 5 uA (Whichever is<br>the greater)|
|Loop supply|(10 to 30) VDC|SELV|
|Protection|Reverse connection protected||
|Sensitivity||10 uA/V|
|Loop voltage effect||0.2 uA / V|
|Maximum output load|[(V supply–10)/20] KΩ|700 Ω @ 24 V DC|
|Maximum output||< 30 mA|
|Thermal drift|Zero drift, 0 % at 20°C<br>Span drift, 0 % at 20°C|± 0.02 %/°C<br>±0.005 %/°C|
|At > 24 V supply use with a minimum 250 Ω load|||



**GENERAL                                                                                                                          SPECIFICATIONS @20°C** 

|**GENERALSPECIFICATIONS @20°C**|**GENERALSPECIFICATIONS @20°C**|**GENERALSPECIFICATIONS @20°C**|
|---|---|---|
||**Function**|**Description**|
||Response time|< 60 ms to reach 70 % of final value|
||Start-up time|< 4 s|
||Warm-up time|180 s to full accuracy|
||Default configuration|Un-ranged (no links set)|
||Add required range to be pre-set to order number||



## **ENVIRONMENTAL** 

|**ENVIRONMENTAL**|**ENVIRONMENTAL**|**ENVIRONMENTAL**|
|---|---|---|
||**Function**|**Description**|
||Ambient temperature|Operating: (0 to 70) °C<br>Storage: (-40 to 90)°C|
||Ambient Humidity|Operating/Storage (0 to 90) %RH non-condensing|
||Protection requirement|>= IP65recommended|



|**MECHANICAL**||
|---|---|
|**Function**|**Description**|
|Dimensions|42 mm diameter; 23 mm height|
|Fixing centres|2 x 5.5 mm holes on 33 mm centres|
|Weight|25 g approximately|



D2075-02-04 CN5719 SEM104P Datasheet, Page 2 of 3 

SEM104P ANALOGUE IN HEAD TEMPERATURE TRANSMITTER 

|**APPROVALS**|**APPROVALS**|
|---|---|
|EMC|BS EN 61326: Note-Sensor input wires to be less than 3 m to comply|
|Ingress protection|BS EN 60529|
|RoHS|Directive 2011/65/EU<br>Incorporation RoHS 3 amendment directiveEU2015/863|



## MECHANICAL 

Dimensions in mm.                                              Fixing holes 2 x Ø5.5 mm, on 33 mm centres 

## **ORDER CODE** ~~ee~~ 

## SEM104P ~~ee~~ 

## **ACCESSORIES** 

Head options Please refer to www.status.co.uk Probe options Please refer to www.status.co.uk RMK/3-T “Top hat” DIN rail profile mounting clip 

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

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 D2075-02-04 CN5719 SEM104P Datasheet, Page 3 of 3