SEM1750

SEM1750 DUAL CHANNEL CONDITIONER FOR PROCESS INPUTS 

- **TWO mA OR VOLTAGE PROCESS SIGNAL INPUTS** 

- > ~~[ee]~~ **TWO ISOLATED mA OR VOLTAGE OUTPUTS** 

   - **ISOLATED UNIVERSAL AC/DC POWER SUPPLY** 

- **MATHS AND PROFILING TOOLS IN SOFTWARE** 

- > ~~Be~~ 7 **DIRECT USB CONFIGURATION** ~~RF~~ **LOOP POWER SUPPLY FOR I/Ps AND O/Ps** 

## **INTRODUCTION** 

SEM1750 is a dual channel signal conditioner designed to accept mA or voltage inputs and provide isolated, industrial process output signals in mA or Volts. Each output channel may be linked to either an input signal or to a maths function of both input signals. This powerful feature allows the device to operate in several different modes. 

The output signal can also be adjusted over the full working ranges (0 to 20) mA or (0 to 10) V, to provide common or custom process signals, examples (4 to 20) mA, (0 to 1) mA, (1 to 5) V. 

The SEM1750 is configured using the free software that allows the user to configure the device without requiring calibration equipment. Maths functions on each channel can be set up using the software as well as a 22-segment profile tool. Input/output simulation tools for diagnostic purposes are also available. 

## **FEATURE HIGHLIGHTS** 

## **FLEXIBLE** 

The SEM1750 has a wide range of process input options (-50 to 50) mA, (-50 to 50) V. With comparison functions between channels, paired with the configuration functionality it has to offer, it is a flexible and versatile tool for many varied process applications. Live readings can be displayed to a PC via the configuration software. 

## **UNIVERSAL SUPPLY** 

Supply: From 20 VDC to 240 VAC and everything in-between, the auto-detecting power supply is simple but effective, giving the SEM1750 the capability to be powered from a variety of supplies. 

## **DIRECT USB CONFIGURATIONS** 

The SEM1750 has a USB port on the front panel for direct programming of its configuration using the free Windows software. The configuration functionality it has to offer makes it a hugely flexible and versatile tool for many varied applications. Live readings can be displayed to a PC via the configuration software. 

D2551-01-06 CN5762 SEM1750 Datasheet, Page 1 of 4 

SEM1750 DUAL CHANNEL CONDITIONER FOR PROCESS INPUTS 

|**V INPUT**<br>**(Channels 1 & 2)**|||**SPECIFICATIONS @20°C**|
|---|---|---|---|
|||||
|**Type**|**Range**|**Stability**|**Accuracy/Notes**|
|± 50 V DC|(-50 to 50) V|0.02 % FSR***1**/°C|± 10 mV*****²|
||(-22 to 22) V||± 5 mV*****²|
|Impedance|||1 MΩ|
|User selectable range|||Any within FSR|
|***1 **FSR=Full Scale Range||||
|*****²At 420 ms update rate||||



|**mA INPUTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**mA INPUTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**mA INPUTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**mA INPUTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|
|---|---|---|---|
|**Type**|**Range**|**Stability**|**Accuracy/Notes**|
|± 50 mA DC|(-50 to 50) mA|0.02 % FSR***1**/°C|± 10 mV*****² <br>± 5 mV*****²|
||(-22 to 22) mA|||
|Impedance|||10 Ω|
|Transmitter supply|Source (internal supply)||22 VDC @ 25 mA|
|Transmitter supply|Sink (external supply)||SELV|
|User selectable range|||Any within FSR|
|***1**FSR=Full Scale Range||||
|*****² At420ms updaterate||||



|**OUTPUT ANALOGUE mA CURRENTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**OUTPUT ANALOGUE mA CURRENTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**OUTPUT ANALOGUE mA CURRENTSPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|
|---|---|---|
|**Type/Function**|**Range/Description**|**Accuracy/Notes**|
|Two wire current<br>Sink or source|(0 to 20) mA<br>(4 to 20) mA<br>User mA, any within full range|(mA output /2000) or 5 uA (Whichever is<br>the greater)|
|Calibration Accuracy||± 5 uA|
|Supply in sink mode|(11 to 30) V DC, 24 V nominal|SELV|
|Maximum load current source|(0 to 20) mA|Maximum load 550 Ω|
|Maximum load current sink|Supply voltage @24 Vdc|Maximum load 650 Ω|
|Response time|< 500 ms to reach 95 % of final value; Start-up time < 3 s||
|Loop voltage effect||Loop ripple 0.03 % of FSR;|
|Supply sensitivity|Supply ripple rejection < ± 5 uA error @ 1 V rms 50 Hz ripple||
|Protection|Reverse connection and over-voltage protection. Maximum over-voltage<br>current 100 mA||
|Current Output Damping|Programmable rise and fall (0 to 250) seconds, for a (0 to 20) mA swing.||
|Thermal stability|Zero at 20°C|± 2 uA/°C typically|
|The mA output range can be set to anywhere within the maximum capability|||



|**OUTPUT ANALOGUE VOLTAGESPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**OUTPUT ANALOGUE VOLTAGESPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|**OUTPUT ANALOGUE VOLTAGESPECIFICATIONS @20°C**<br>**(Channels 1 & 2)**|
|---|---|---|
|**Type/Function**|**Range/Description**|**Accuracy/Stability/Notes**|
|Two wire voltage|(0 to 10) VDC<br>User V, any within full range|± 5 mV|
|Calibration Accuracy||± 5 mV|
|Maximum output||10.1 VDC|
|Min Load|10 KΩ User Configurable correction for Load||
|Response time|< 500 ms to reach 95 % of final value; Start-up time < 3 s||
|Current drive||± 2 mA, minimum load 5 KΩ @ 10 VDC|
|Thermal stability|Zero at 20°C|± 1 mV/°C|
|Voltage generated across 500 Ω resistor|||
|The voltage output range can be set to anywhere within the maximum capability|||



D2551-01-06 CN5762 SEM1750 Datasheet, Page 2 of 4 

SEM1750 DUAL CHANNEL CONDITIONER FOR PROCESS INPUTS 

|**USB CONFIGURATION USER INTERFACE**|**USB CONFIGURATION USER INTERFACE**||
|---|---|---|
||||
|**Type/Options/Function**|**Description**|**Notes**|
|Configuration hardware|USB mini B|Cable not included|
|Configuration software|USBSpeedLink|Download www.status.co.uk|
|Operating system|Microsoft Windows|Windows 7 or later|



|**USB CONFIGURATION USER INTERFACE**<br>**(Channels 1 & 2)**|**USB CONFIGURATION USER INTERFACE**<br>**(Channels 1 & 2)**|**USB CONFIGURATION USER INTERFACE**<br>**(Channels 1 & 2)**||
|---|---|---|---|
|||||
|**Type/Options/Function**|**Description**||**Notes**|
|Configuration: basic or<br>advanced|Select mode on<br>connection to instrument||Some options only available in advanced mode|
|Input Type<br>Scale|High, low||Voltage or milli Amps<br>Any within range|
|Output configuration<br>Type<br>Scale<br>Fixed output<br>Error signal<br>Load correction<br>Output damping mA, V|Output signal<br>High, low<br>For diagnostics<br>Up, down, user<br>For voltage output<br>Rise/fall for full range||mA, V<br>mA, V any value within output range<br>mA, V any value within output range<br>User = any value within output range<br>In ohms<br>(0 to 250) s|
|Maths functions<br>Profile tool (interpolation)<br>Output source selection|Derived from CH1, CH2<br>CH1, CH2<br>CH1, CH2||A+B, A-B (signed or unsigned), average,<br>multiply, divide, highest, lowest, square.<br>Up to 22 segments X, Y data<br>Comparison options|
|Live data|Input Signal<br>Output signal<br>Record live data<br>Store configuration to PC||Value<br>mA, V value<br>Save data to CSV file<br>Save data to file|
|Other device options|Tag number||20 Characters|
|||||
|**GENERAL**||||
|||||
|**Function**||**Description**||
|Power supply||(20 to 240) V DC SELV, (20 to 240) V AC  50/60 Hz||
|Power||3 W max||
|Protection||Internal fuse, over-voltage, external protection recommended||
|Galvanic Isolation Supply to I/P<br>and O/P ports||4000 VDC test, 253 VAC working||
|Galvanic Isolation I/P to O/P ports||3750 VDC test, 250 VAC working||
|Sample rate||420 ms (18 Bits full range)<br>140 ms (16 Bits full range)<br>70   ms (14 Bits full range)||
|Start-up time||4 s||
|Indication (State LED)||Green = OK<br>Red=input/output/configuration error indication||
|Note||USB terminal shares the same GND as CH1 output||



## **MECHANICAL** 

|**MECHANICAL**|**MECHANICAL**|**MECHANICAL**|
|---|---|---|
||**Function**|**Description**|
||Dimensions|120 mm (from back of rail) x 22.5 mm wide x 106 mm high|
||Enclosure colour|Grey|
||Material|Blend PC/ABS self-extinguishing|
||Connections|Two-part screw connectors for power, inputs, outputs|
||Weight|145 g approximate|
||Rail mount|DIN 60715|



D2551-01-06 CN5762 SEM1750 Datasheet, Page 3 of 4 

SEM1750 DUAL CHANNEL CONDITIONER FOR PROCESS INPUTS 

**ENVIRONMENTAL Function Description** Ambient temperature Operating/Storage (-30 to 70) °C - Ambient humidity Operating/Storage (10 to 90) %RH non condensing Protection requirement Device must be installed in an enclosure offering >IP65 Protection USB configuration ambient (10 to 30) °C 

**APPROVALS** EMC BS EN 61326: Note - Sensor input wires to be less than 30 m to comply Electrical Safety BS EN 61010-1 Ingress Protection BS EN 60529 RoHS Directive 2011/65/EU 

## **MECHANICAL** 

## **ORDER CODE** 

## **SEM1750** 

## **ACCESSORIES** 

|USB configuration software|USBSpeedLink free of charge from www.status.co.uk|
|---|---|
|Loop powered display|Refer to www.status.co.uk|
|48-200-0001-01|Standard USB Ato USB mini Bcableforconfiguration|



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 Ltd. 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 

D2551-01-06 CN5762 SEM1750 Datasheet, Page 4 of 4