Models: 611T: Single I/O channel 612T: Dual I/O channel These units receive DC current or voltage input signals, provide isolation, and output proportional DC current or voltage signals. With support for universal DC I/O ranges, 610T series transmitters provide a solution for a wide variety of isolation and signal conversion tasks. The single-channel 611T and dual-channel 612T are ideal for panel shops and end-users who require a high-density signal conditioner that can accommodate a broad range of instrumentation applications. Installation is fast and simple with Acromag’s built-in auto-configuration feature. Using your standard calibrator, the 610T’s internal microcontroller automatically senses the input source type (voltage or current) and selects the optimum performance range for your zero and full-scale input values. To adjust your output values, simply push the up or down buttons on the front panel until you read the desired output signal on your meter. Both models provide high-voltage isolation between the input, output and power (3-way). On dual channel units, each channel operates independently, with inputs isolated from each other, to prevent interaction between channels. For easy troubleshooting, each channel has diagnostic LEDs to identify input over/under range conditions. An additional status LED indicates the unit is operating properly or that the front panel push button lockout feature has been invoked. Input Ranges Universal input with automatic configuration ±100mA (self-ranging) ±100V DC (self-ranging) 0 to 20 amps AC (with optional sensor) Output Ranges Universal output (user-configured ranges) 0 to 20mA (full range capability), 0 to 10V DC (full range capability) Power Requirement: 10 to 36V DC Approvals: CE marked. UL, cUL listed.

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)

DC Current Input

DC Current Input Range: ±100mA DC with full range capability. Minimum recommended span is ±4mA. DC Current Input Impedance: 10 ohms DC Current Input Accuracy: Better than ±0.1% of output span.

DC Voltage Input

DC Voltage Input Range: ±100V DC with full range capability. Minimum recommended span is ±40mV. Input impedance: ±1V to ±100V input: greater than 100K ohms. ±40mV to ±1V input: 1K ohm DC Voltage Input Accuracy: Better than ±0.1% of output span.

AC Current Input

AC Current Input Range (optional): An optional external AC current sensor is required to monitor AC current signals (Model 5020-350). AC Current Range       Primary Turns 0 to 20A AC                                      1 0 to 10A AC                                      2 0 to 5A AC                                        4 0 to 2A AC                                      10 0 to 1A AC                                      20 AC Current Input Accuracy: Better than ±0.5% of output span.

Output (DC V/mA)

Current Output: Range: 0 to 20mA maximum (user-configured range). Compliance: 11V DC typical. Load resistance range: 0 to 550 ohms. Voltage Output: Ranges: 0 to 10V maximum (user-configured range). Compliance: 10mA max. with short circuit protection. Output impedance: 1 ohms. Accuracy (overall input to output): Better than ±0.1% of span for nominal output ranges of 0 to 10V or 0 to 20mA. Ambient Temperature Effect: Better than ±0.018% of output span per °C or ±1µV, whichever is greater. Output Response Time (for input step change): 800mS typical to 98% of final output value.


Ambient Temperature Operating: -25 to 70°C (-13 to 158°F). Storage: -40 to 85°C (-40 to 185°F). Relative Humidity: 5 to 95%, non-condensing. Power Requirements 611T: 10 to 36V DC. 24V DC @ 55mA. 612T: 10 to 36V DC. 24V DC @ 75mA. Isolation: 3-way (input/output/power). 1500V AC for 60 seconds or 250V AC continuous. Dual channel model includes input-to-input isolation and outputs share a common. 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 Surge Withstanding Capability (SWC): Complies with EN61000-4-5 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: CE marked, UL, cUL listed (USA, Canada). UL3121 general product safety.


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.  

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    611T, 612T: Transmitter, Single or Dual Channel, DC Voltage/Current Input, DC-Powered

    • ±100V DC, 0 to 100mA DC, 0 to 20A AC (with optional sensor) input
    • 0 to 20mA, 0 to 10V DC output
    • 10-36V DC power
    • Universal DC I/O transmitters with auto-configuration and self-ranging capabilities
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