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Product short description:
  • 100 ohm Pt, 120 ohm Ni, 10 ohm Cu (selectable type) input
  • 4 to 20mA DC output
  • 12-50V DC from output loop power
  • DIP-switch configuration, push-button calibration

These units accept universal RTD or resistance input signals and output proportional DC current signals. The output can also be linearized to the input sensor signal.

[DISPLAY_ULTIMATE_PLUS]

Models:
657T: Single RTD input channel
658T: Dual RTD input channels

These units accept universal RTD or resistance input signals and output proportional DC current signals. The output can also be linearized to the input sensor signal. Single-channel 657T and dual-channel 658T units are ideal for panel shops and end-users who require a high-density signal conditioner that can accommodate a broad range of temperature measurement applications.

Configuration is fast and easy. First, you select the input type with a simple DIP switch. Then, you set your zero/full-scale output values using a toggle switch on the front panel to increase or decrease the signal until you read the desired output value on your voltmeter. The toggles make it easy to calibrate a normal (proportional) or reverse-acting (inverse) response in seconds. After completing the calibration, just press the mode/set toggle and your configuration settings are safely saved to nonvolatile memory.

Input Ranges:
RTD: 100 ohm Pt, 120 ohm Ni, 10 ohm Cu
Resistance: 0 to 500 ohms
Output Range: 4 to 20mA DC
Power Requirement:
12 to 50V DC (loop-powered)
Two-wire transmitter
Approvals:
UL, cUL listed
Class I; Division 2; Groups A, B, C, D

Performance Specifications

General Input

Analog to Digital Converter (ADC): 16-bit S-D A/D converter
Noise Rejection:
Normal Mode: Better than 40dB @ 60Hz
Common Mode: Better than 100dB @ 60Hz
Input Overvoltage Protection: Bipolar Transient Voltage Suppressors (TVS)
Input Impedance: 400K ohm at 10mV span; input current, ±25nA, typical (±30nA, max.)

RTD Input

RTD Input Ranges: 100 Ohms, 120W Ni, or 10W Cu; user-configured.

RTD                °C Range (°F Range)                    Accuracy
Pt1        -200 to 850°C (-328 to 1562°F)               ±0.25°C
Pt2        -200 to 850°C (-328 to 1562°F)               ±0.25°C
Ni             -80 to 320°C  (-112 to 608°F)                 ±0.25°C
Cu        – 200 to 260°C (-328 to 500°F)                 ±1.00°C
Alpha: Pt1 (a = 1.3850), Pt2 (a = 1.3911), Ni a = 1.6720), Cu (a = 1.4272)

2, 3, or 4-wire configurations supported. Module provides sensor excitation, linearization, lead-wire compensation, and sensor break detection.
RTD Excitation Current: 0.5mA DC typical, all types
RTD Lead-Wire Compensation: 25 ohms per lead
RTD Break Detection: Configurable for either upscale or downscale

Resistance Input

Resistance Input Range: 0 to 500 ohms
Resistance Accuracy: ±0.05 ohms

Output

Output Range: Range: 4 to 20mA DC, 3.8 to 22mA range typical
Output Compliance: Rload = (Vsupply – 12V) / 0.02A
Output Response Control: Proportional/inverse selectable
Ambient Temperature Effect: Better than ±0.006% of input span per °C or ±100ppm/°C, whichever is greater
Output Response Time (for input step change): 700mS typical to 98% of final output value

Environmental

Ambient Temperature:
Operating: -25 to 75°C (-13 to 167°F)
Storage: -40 to 85°C (-40 to 185°F)
Relative Humidity: 5 to 95%, non-condensing
Power Requirement: 12 to 50V DC @ 25mA for each output channel
Isolation: Not isolated
Radiated Field Immunity (RFI): Complies with EN61000-4-3 Level 3 and EN50082-1
Electromagnetic Field Immunity (EMI): Less than ±0.25% of output span effect
Electrical Fast Transient (EFT): Complies with EN61000-4-4 Level 3 and EN50082-1
Electrostatic Discharge (ESD): Complies with EN61000-4-2 Level 3 and EN50082-1
Radiated Emissions: Meets or exceeds EN50081-1 for Class B equipment
Approvals:
UL & cUL listed
Hazardous Locations: Class I: Div. 2; Groups A, B, C, D

Physical

Enclosure: Case: Self-extinguishing NYLON type 6.6 polyamide thermoplastic UL94 V-2 NEMA Type 1 enclosure
Connectors (Removable Terminal Blocks): Wire Range: AWG #12-24
Printed Circuit Boards: Military grade FR-4 epoxy glass circuit board
Dimensions:
1.05W x 4.68H x 4.35D inches
26.7W x 118.9H x 110.5D millimeters
Shipping Weight: 1 pound (0.45 Kg) packed

  • Selectable RTD input types offer flexibility to fit many applications
  • DIP switch-configuration and self-ranging technologies speed installation without pots, jumpers, or software
  • Toggle-switch calibration simplifies field adjustments for faster and easier maintenance
  • Configuration lockout safety feature prevents tampering and accidental changes
  • Reverse-acting output capability enables inverse proportional control signals
  • Dual channel model saves space and reduces equipment costs
  • High-resolution sigma-delta A/D converters deliver superior accuracy for reliable measurements
  • Lead break detection supports upscale or downscale fail-safe mode
  • Operating temperature range: -25 to 75°C (-13 to 167°F)
Temperature Measurement Select the Best Temperature Sensor for Process Control Applications White Paper (Log in to view the file)
How to Select the Best Temperature Sensor for Process Control Applications White Paper Thermocouples versus Resistance Temperature Detectors Many users simply look to fill the basic needs of their application and do not worry much about their choice of temperature sensing technology. That is, they will make a selection based simply on temperature range and...
Temperature Measurement Using RTDs White Paper (Log in to view the file)
The Basics of Temperature Measurement Using RTDs Temperature reigns as the most often measured process parameter in industry. Most industrial applications require that a temperature be measured remotely, and that this signal be transmitted some distance. An industrial transmitter is commonly used to amplify, isolate, and convert the low-level sensor signal to a high level...

Manuals

657T, 658T User Manual (Log in to download the file)

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Additional information

Weight 16 oz
Dimensions 1.1 × 5 × 4.5 in
Part Number

657T-0600: Single channel, 657T-0600-C: Single channel, with factory calibration. Specify ranges at checkout, 658T-0600: Dual channel, 658T-0600-C: Dual channel, with factory calibration. Specify ranges at checkout

Product Series

600 Series

  • Description

    Models:
    657T: Single RTD input channel
    658T: Dual RTD input channels

    These units accept universal RTD or resistance input signals and output proportional DC current signals. The output can also be linearized to the input sensor signal. Single-channel 657T and dual-channel 658T units are ideal for panel shops and end-users who require a high-density signal conditioner that can accommodate a broad range of temperature measurement applications.

    Configuration is fast and easy. First, you select the input type with a simple DIP switch. Then, you set your zero/full-scale output values using a toggle switch on the front panel to increase or decrease the signal until you read the desired output value on your voltmeter. The toggles make it easy to calibrate a normal (proportional) or reverse-acting (inverse) response in seconds. After completing the calibration, just press the mode/set toggle and your configuration settings are safely saved to nonvolatile memory.

    Input Ranges:
    RTD: 100 ohm Pt, 120 ohm Ni, 10 ohm Cu
    Resistance: 0 to 500 ohms
    Output Range: 4 to 20mA DC
    Power Requirement:
    12 to 50V DC (loop-powered)
    Two-wire transmitter
    Approvals:
    UL, cUL listed
    Class I; Division 2; Groups A, B, C, D

    Performance Specifications

    General Input

    Analog to Digital Converter (ADC): 16-bit S-D A/D converter
    Noise Rejection:
    Normal Mode: Better than 40dB @ 60Hz
    Common Mode: Better than 100dB @ 60Hz
    Input Overvoltage Protection: Bipolar Transient Voltage Suppressors (TVS)
    Input Impedance: 400K ohm at 10mV span; input current, ±25nA, typical (±30nA, max.)

    RTD Input

    RTD Input Ranges: 100 Ohms, 120W Ni, or 10W Cu; user-configured.

    RTD                °C Range (°F Range)                    Accuracy
    Pt1        -200 to 850°C (-328 to 1562°F)               ±0.25°C
    Pt2        -200 to 850°C (-328 to 1562°F)               ±0.25°C
    Ni             -80 to 320°C  (-112 to 608°F)                 ±0.25°C
    Cu        – 200 to 260°C (-328 to 500°F)                 ±1.00°C
    Alpha: Pt1 (a = 1.3850), Pt2 (a = 1.3911), Ni a = 1.6720), Cu (a = 1.4272)

    2, 3, or 4-wire configurations supported. Module provides sensor excitation, linearization, lead-wire compensation, and sensor break detection.
    RTD Excitation Current: 0.5mA DC typical, all types
    RTD Lead-Wire Compensation: 25 ohms per lead
    RTD Break Detection: Configurable for either upscale or downscale

    Resistance Input

    Resistance Input Range: 0 to 500 ohms
    Resistance Accuracy: ±0.05 ohms

    Output

    Output Range: Range: 4 to 20mA DC, 3.8 to 22mA range typical
    Output Compliance: Rload = (Vsupply – 12V) / 0.02A
    Output Response Control: Proportional/inverse selectable
    Ambient Temperature Effect: Better than ±0.006% of input span per °C or ±100ppm/°C, whichever is greater
    Output Response Time (for input step change): 700mS typical to 98% of final output value

    Environmental

    Ambient Temperature:
    Operating: -25 to 75°C (-13 to 167°F)
    Storage: -40 to 85°C (-40 to 185°F)
    Relative Humidity: 5 to 95%, non-condensing
    Power Requirement: 12 to 50V DC @ 25mA for each output channel
    Isolation: Not isolated
    Radiated Field Immunity (RFI): Complies with EN61000-4-3 Level 3 and EN50082-1
    Electromagnetic Field Immunity (EMI): Less than ±0.25% of output span effect
    Electrical Fast Transient (EFT): Complies with EN61000-4-4 Level 3 and EN50082-1
    Electrostatic Discharge (ESD): Complies with EN61000-4-2 Level 3 and EN50082-1
    Radiated Emissions: Meets or exceeds EN50081-1 for Class B equipment
    Approvals:
    UL & cUL listed
    Hazardous Locations: Class I: Div. 2; Groups A, B, C, D

    Physical

    Enclosure: Case: Self-extinguishing NYLON type 6.6 polyamide thermoplastic UL94 V-2 NEMA Type 1 enclosure
    Connectors (Removable Terminal Blocks): Wire Range: AWG #12-24
    Printed Circuit Boards: Military grade FR-4 epoxy glass circuit board
    Dimensions:
    1.05W x 4.68H x 4.35D inches
    26.7W x 118.9H x 110.5D millimeters
    Shipping Weight: 1 pound (0.45 Kg) packed

  • Features & Benefits

    • Selectable RTD input types offer flexibility to fit many applications
    • DIP switch-configuration and self-ranging technologies speed installation without pots, jumpers, or software
    • Toggle-switch calibration simplifies field adjustments for faster and easier maintenance
    • Configuration lockout safety feature prevents tampering and accidental changes
    • Reverse-acting output capability enables inverse proportional control signals
    • Dual channel model saves space and reduces equipment costs
    • High-resolution sigma-delta A/D converters deliver superior accuracy for reliable measurements
    • Lead break detection supports upscale or downscale fail-safe mode
    • Operating temperature range: -25 to 75°C (-13 to 167°F)
  • Tech Papers

    Temperature Measurement Select the Best Temperature Sensor for Process Control Applications White Paper (Log in to view the file)
    How to Select the Best Temperature Sensor for Process Control Applications White Paper Thermocouples versus Resistance Temperature Detectors Many users simply look to fill the basic needs of their application and do not worry much about their choice of temperature sensing technology. That is, they will make a selection based simply on temperature range and...
    Temperature Measurement Using RTDs White Paper (Log in to view the file)
    The Basics of Temperature Measurement Using RTDs Temperature reigns as the most often measured process parameter in industry. Most industrial applications require that a temperature be measured remotely, and that this signal be transmitted some distance. An industrial transmitter is commonly used to amplify, isolate, and convert the low-level sensor signal to a high level...
  • Specs & Data Sheets

    Manuals

    657T, 658T User Manual (Log in to download the file)

  • Accessories

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      • 19" rack-mount kit with DIN rail
      $190
      Select options
    • Compare

      DIN Rail: Type T

      • DIN Rail Strip, Type T
      $20$30
      Select options
    • Compare

      PS5R: Slim Line Power Supplies

      • 10W, 15W, 30W, 60W, 90W, 120W, and 240W models
      • Universal Input (85-264V AC / 100-370V DC)
      • Lightweight and compact size
       
      $100$255
      Select options
    • Compare

      Terminal Block Replacements

      • Simplifies wiring connections on Acromag I/O Modules
      • Barrier strip or spring clamp terminal block kits
      • Provide safe and secure wiring connections
      $35$45
      Select options
  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 1.1 × 5 × 4.5 in
    Part Number

    657T-0600: Single channel, 657T-0600-C: Single channel, with factory calibration. Specify ranges at checkout, 658T-0600: Dual channel, 658T-0600-C: Dual channel, with factory calibration. Specify ranges at checkout

    Product Series

    600 Series