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Product short description:
  • DC current and low voltage input
  • 4-20mA outputs (sink/source)
  • 7-32V DC loop power

The SP236 model is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional 4-20mA control signals. Power is received from one or both output loop currents.

Click here to watch a short video highlighting the features of the Acromag SP Series.

The SP236 model is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional 4-20mA control signals. Power is received from one or both output loop currents.

Setup is fast and easy with a USB connection to your PC and our Windows software. Acromag’s Agility™ mobile app enables configuration on an Android smart phone or tablet. Software simplifies I/O range scaling, calibration, and advanced signal processing capabilities.

High-voltage isolation separates the input from each output circuit. The isolation protects from surges, reduces noise, and eliminates ground loop errors.

These rugged instruments withstand harsh industrial environments to operate reliably across a wide temperature range with very low drift. They feature high immunity to RFI, EMI, ESD, and EFT, plus low radiated emissions.

Performance Specifications

IMPORTANT: To prevent ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a SP230 Series transmitter.

USB Interface

USB Connector: USB Mini-B type socket, 5-pin,

USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.

USB Transient Protection: transient voltage suppression on power and data lines.

USB Cable Length: 5.0 meters maximum.

Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

Input (Passive)

Default Configuration/Calibration
Input: 4 to 20mA, medium filter.
Output: 4 to 20mA.

Input Ranges and Accuracy
Range                                                Accuracy* (typical)
±20mA                                                        ±0.05% of span
0 to 20mA                                                  ±0.05% of span
4 to 20mA                                                  ±0.05% of span
0 to 11.17mA (for AC sensor)                 ±0.05% of span
±1mA                                                           ±0.05% of span
±0.5V                                                            ±0.05% of span
0 to 500mV                                                ±0.05% of span
*Error includes the effects of repeatability, terminal point conformity, and linearization.

Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).

Zero Scaling Adjust: 0 to 95% of range, typical.

Full Scale Adjust: 5 to 100% of full scale range, typical.

Input Impedance
Current input: 24.9 ohms.
Voltage input: 15M ohms.

Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

Input Resolution
Bipolar input: 1 part in 50000 (±25000).
Unipolar input: 1 part in 25000.

Input Filter: Selectable digital filtering settings (none, low, medium, high).

Input Filter Bandwidth
Normal mode plus digital filtering within the ADC.
Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.

Noise Rejection (Common Mode, High Filter): 138dB @ 60Hz, typical with 100 ohm input unbalance.

Output (Two Signals, Passive)

Output Range: Dual isolated 4 to 20mA DC.

Output Compliance
Rload = (Vsupply – 7V) / 0.020A.
Rload = 0 to 850 ohms @ 24V DC.

Output Response Time (for step input change)

Time to reach 98% of final output value (typical)
No filter:              17 milliseconds
Low filter:           41 milliseconds
Medium filter: 138 milliseconds
High filter:      1142 milliseconds

Environmental

Operating temperature: -40 to 80°C (-40° to 176°F).

Storage temperature: -40 to 85°C (-40 to 185°F).

Relative humidity: 5 to 95% non-condensing.

Power Requirement: Loop powered, 7-32V DC SELV (Safety Extra Low Voltage), 24mA max.

Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

Shock and Vibration Immunity
Vibration: 4g, per IEC 60068-2-64.
Shock: 25g, per IEC 60068-2-27.

Electromagnetic Compatibility (EMC) Compliance
Radiated Emissions: BS EN 61000-6-4, CISPR 16.
RFI: BS EN 61000-6-2, IEC 61000-4-3.
Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.
ESD: BS EN 61000-6-2, IEC 61000-4-2.
EFT: BS EN 61000-6-2, IEC 61000-4-4.
Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.

Approvals: CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX/IECEx Zone 2.
Ex II 3 G Ex nA IIC T4 Gc -40°C ≤ Ta ≤ +80°C

Physical

General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.

Case Material: Self-extinguishing polyamide, UL94 V-0 rated, color light gray. General-purpose NEMA Type 1 enclosure.

I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.

Dimensions: 17.5 x 114.5 x 99.0 mm (0.69 x 4.51 x 3.90 inches).

Shipping Weight: 0.22 kg (0.5 pounds) packed.

  • Easy configuration via USB with Windows software or Agility app for Android
  • Single unit accepts input ranges up to ±500mV, ±20mA DC, or 0-20A AC (with external sensor)
  • Input scales independently at each output
  • User-selectable filtering (none, low, med, high)
  • User-configurable output range clamp levels support NAMUR-compliant operation
  • Supports reverse-acting (inverse) output
  • Supports sink or source output wiring
  • Very low 7V two-wire loop burden
  • High accuracy, linearity, stability, and reliability
  • 1500V isolation
  • Space-saving 17.5mm (0.69 inch) design with pluggable terminals for easier wiring
  • Shock (25g) and vibration (4g) resistant
  • Wide ambient operation (-40 to 80°C)
  • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals
How to Wire a 2 or 4-Wire Current Input Module - 8401048
Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...
How to Re-transmit and Isolate 4-20mA Signals from Remotely-Mounted 3-Wire Gas Detection Sensors - 8400957
Defining the Problem: Signals from 3-wire remote sensors that monitor combustible and toxic gases are typically transmitted directly to the remote gas monitor or controller. However, in some cases, it’s desirable to send the signal to more than one destination. This can either be accomplished by re-transmitting the existing signal to additional locations; or by...
What is Circuit Grounding and Why is it Important? - 8500993 (Log in to view the file)
Why is circuit grounding important? This whitepaper is Part 1 of a three-part Grounding Electrical Equipment Best Practices series that looks at grounding and its role in protecting personnel, equipment, and ensuring the integrity of electrical signals. In this part, we will review circuit grounding and its importance to you, as well as the US...
How Do Ground Fault Circuit Interrupters Work & Protect Us from Shock? - 8500020 (Log in to view the file)
How do ground fault circuit interrupters work? This Electrical Ground Rules white paper is Part 2 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. In this part, we will examine our use of ground as a means of...
How does Ground Work as a Voltage Stabilizer and Transient Limiter? - 8501021 (Log in to view the file)
What is the role of ground as a voltage stabilizer and transient limiter? This Electrical Ground Rules whitepaper is Part 3 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. Consideration of ground can be very complex and application...
How to Split Gas Detector Outputs for Monitoring & Process Control - 8400861
Defining the Problem: At a remote wastewater pumping station, Methane (CH4) and Hydrogen Sulfide (H2S) are monitored with MSA X5000 Gas Monitors. The 4-20mA outputs must be split to a GasCard XL Controller and Emerson Ovation I/O. The Controller has powered inputs, but the Ovation inputs require an external power source. Typical splitters have two...
SP Series Windows Configuration Software (Log in to download the file)
Agility Config Tool (Tethered) (Log in to download the file)
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Additional information

Weight 8 oz
Dimensions 4 × 4.75 × 1 in
Part Number

SP236-0600: Two-wire, Current/Millivolt Input

Configuration

Agility Mobile App, USB Configuration, Windows Software Configuration

Product Series

SP230 Series

Power

Loop Power

  • Description

    The SP236 model is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional 4-20mA control signals. Power is received from one or both output loop currents.

    Setup is fast and easy with a USB connection to your PC and our Windows software. Acromag’s Agility™ mobile app enables configuration on an Android smart phone or tablet. Software simplifies I/O range scaling, calibration, and advanced signal processing capabilities.

    High-voltage isolation separates the input from each output circuit. The isolation protects from surges, reduces noise, and eliminates ground loop errors.

    These rugged instruments withstand harsh industrial environments to operate reliably across a wide temperature range with very low drift. They feature high immunity to RFI, EMI, ESD, and EFT, plus low radiated emissions.

    Performance Specifications

    IMPORTANT: To prevent ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a SP230 Series transmitter.

    USB Interface

    USB Connector: USB Mini-B type socket, 5-pin,

    USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.

    USB Transient Protection: transient voltage suppression on power and data lines.

    USB Cable Length: 5.0 meters maximum.

    Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

    Input (Passive)

    Default Configuration/Calibration
    Input: 4 to 20mA, medium filter.
    Output: 4 to 20mA.

    Input Ranges and Accuracy
    Range                                                Accuracy* (typical)
    ±20mA                                                        ±0.05% of span
    0 to 20mA                                                  ±0.05% of span
    4 to 20mA                                                  ±0.05% of span
    0 to 11.17mA (for AC sensor)                 ±0.05% of span
    ±1mA                                                           ±0.05% of span
    ±0.5V                                                            ±0.05% of span
    0 to 500mV                                                ±0.05% of span
    *Error includes the effects of repeatability, terminal point conformity, and linearization.

    Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).

    Zero Scaling Adjust: 0 to 95% of range, typical.

    Full Scale Adjust: 5 to 100% of full scale range, typical.

    Input Impedance
    Current input: 24.9 ohms.
    Voltage input: 15M ohms.

    Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

    Input Resolution
    Bipolar input: 1 part in 50000 (±25000).
    Unipolar input: 1 part in 25000.

    Input Filter: Selectable digital filtering settings (none, low, medium, high).

    Input Filter Bandwidth
    Normal mode plus digital filtering within the ADC.
    Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.

    Noise Rejection (Common Mode, High Filter): 138dB @ 60Hz, typical with 100 ohm input unbalance.

    Output (Two Signals, Passive)

    Output Range: Dual isolated 4 to 20mA DC.

    Output Compliance
    Rload = (Vsupply – 7V) / 0.020A.
    Rload = 0 to 850 ohms @ 24V DC.

    Output Response Time (for step input change)

    Time to reach 98% of final output value (typical)
    No filter:              17 milliseconds
    Low filter:           41 milliseconds
    Medium filter: 138 milliseconds
    High filter:      1142 milliseconds

    Environmental

    Operating temperature: -40 to 80°C (-40° to 176°F).

    Storage temperature: -40 to 85°C (-40 to 185°F).

    Relative humidity: 5 to 95% non-condensing.

    Power Requirement: Loop powered, 7-32V DC SELV (Safety Extra Low Voltage), 24mA max.

    Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

    Shock and Vibration Immunity
    Vibration: 4g, per IEC 60068-2-64.
    Shock: 25g, per IEC 60068-2-27.

    Electromagnetic Compatibility (EMC) Compliance
    Radiated Emissions: BS EN 61000-6-4, CISPR 16.
    RFI: BS EN 61000-6-2, IEC 61000-4-3.
    Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.
    ESD: BS EN 61000-6-2, IEC 61000-4-2.
    EFT: BS EN 61000-6-2, IEC 61000-4-4.
    Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.

    Approvals: CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX/IECEx Zone 2.
    Ex II 3 G Ex nA IIC T4 Gc -40°C ≤ Ta ≤ +80°C

    Physical

    General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.

    Case Material: Self-extinguishing polyamide, UL94 V-0 rated, color light gray. General-purpose NEMA Type 1 enclosure.

    I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.

    Dimensions: 17.5 x 114.5 x 99.0 mm (0.69 x 4.51 x 3.90 inches).

    Shipping Weight: 0.22 kg (0.5 pounds) packed.

  • Features & Benefits

    • Easy configuration via USB with Windows software or Agility app for Android
    • Single unit accepts input ranges up to ±500mV, ±20mA DC, or 0-20A AC (with external sensor)
    • Input scales independently at each output
    • User-selectable filtering (none, low, med, high)
    • User-configurable output range clamp levels support NAMUR-compliant operation
    • Supports reverse-acting (inverse) output
    • Supports sink or source output wiring
    • Very low 7V two-wire loop burden
    • High accuracy, linearity, stability, and reliability
    • 1500V isolation
    • Space-saving 17.5mm (0.69 inch) design with pluggable terminals for easier wiring
    • Shock (25g) and vibration (4g) resistant
    • Wide ambient operation (-40 to 80°C)
    • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals
  • Tech Papers

    How to Wire a 2 or 4-Wire Current Input Module - 8401048
    Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...
    How to Re-transmit and Isolate 4-20mA Signals from Remotely-Mounted 3-Wire Gas Detection Sensors - 8400957
    Defining the Problem: Signals from 3-wire remote sensors that monitor combustible and toxic gases are typically transmitted directly to the remote gas monitor or controller. However, in some cases, it’s desirable to send the signal to more than one destination. This can either be accomplished by re-transmitting the existing signal to additional locations; or by...
    What is Circuit Grounding and Why is it Important? - 8500993 (Log in to view the file)
    Why is circuit grounding important? This whitepaper is Part 1 of a three-part Grounding Electrical Equipment Best Practices series that looks at grounding and its role in protecting personnel, equipment, and ensuring the integrity of electrical signals. In this part, we will review circuit grounding and its importance to you, as well as the US...
    How Do Ground Fault Circuit Interrupters Work & Protect Us from Shock? - 8500020 (Log in to view the file)
    How do ground fault circuit interrupters work? This Electrical Ground Rules white paper is Part 2 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. In this part, we will examine our use of ground as a means of...
    How does Ground Work as a Voltage Stabilizer and Transient Limiter? - 8501021 (Log in to view the file)
    What is the role of ground as a voltage stabilizer and transient limiter? This Electrical Ground Rules whitepaper is Part 3 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. Consideration of ground can be very complex and application...
    How to Split Gas Detector Outputs for Monitoring & Process Control - 8400861
    Defining the Problem: At a remote wastewater pumping station, Methane (CH4) and Hydrogen Sulfide (H2S) are monitored with MSA X5000 Gas Monitors. The 4-20mA outputs must be split to a GasCard XL Controller and Emerson Ovation I/O. The Controller has powered inputs, but the Ovation inputs require an external power source. Typical splitters have two...
  • Specs & Data Sheets

  • Software

    SP Series Windows Configuration Software (Log in to download the file)
    Agility Config Tool (Tethered) (Log in to download the file)
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      Agility™ Config Tool (Tethered)

      • Tethered Agility™ Config Tool mobile application
      • For Acromag SP Series Signal Splitters and most TT Series Transmitters
      • Download available on Google Play for free.
      • Download Windows configuration software from the software tab below.
      Read more
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      • 10W, 15W, 30W, 60W, 90W, 120W, and 240W models
      • Universal Input (85-264V AC / 100-370V DC)
      • Lightweight and compact size
       
      Select options
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      TTC-SIP: Software

      • Software Interface Package for Acromag DT, ST, TT Series Transmitters and SP, uBSP Series Signal Splitters.
      • Includes configuration sofware CD-ROM (5040-xxx), isolator (USB-ISOLATOR) and two USB cable (4001-112, 4001-113) (Recommend one kit per customer.)
      • Easy setup and digital calibration via USB with Windows configuration software.
      • Download the configuration software only - from the Software Tab
      Select options
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      Select options
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      USB Isolator

      • USB-powered, USB 2.0 and 1.1 compatible
      • 1500V AC / 2100V DC isolation
      • No drivers required
      This compact, industrial-grade isolator provides a high-voltage isolation barrier between a computer and a connected USB device.    
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 4 × 4.75 × 1 in
    Part Number

    SP236-0600: Two-wire, Current/Millivolt Input

    Configuration

    Agility Mobile App, USB Configuration, Windows Software Configuration

    Product Series

    SP230 Series

    Power

    Loop Power