250T-AC, 350T-AC, 450T-AC: Loop, DC, or AC-Power Transmitter
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Product short description:
- Transmitter, Loop, DC, or AC-Power
- AC Voltage or AC Current Input
- DC Voltage or DC Current Output
These models convert sensor inputs to proportional process current or voltage output signals.
AC voltage transmitters accept direct voltage inputs. Current models include an external AC current sensor. This toroidal sensor outputs a safe DC milliamp signal which transmits accurately
over long distances. Input span is a function of the primary turns placed on the sensor.
Models
250T: Loop-powered transmitter series
350T:Â DC-powered transmitter series
450T:Â AC-powered transmitter series
Performance Specifications
Input Ranges:
AC Voltage: 50/60Hz, 0 to 150V AC
AC Current: 0 to 20A
Output Ranges:
DC Current: 4 to 20mA
DC voltage: 0 to 5V or 0 to 10V
Power Requirements:
250T: 12 to 50V DC @ 20mA (loop-powered)
350T: DC Voltage Source
Output Range        Power
4 to 20mAÂ Â Â Â Â Â Â Â 10 to 36V DC @ 30mA
0 to 5VÂ Â Â Â Â Â Â Â Â Â Â 10 to 36V DC @ 9mA
0 to 10VÂ Â Â Â Â Â Â Â 12.5 to 36V DC @ 9mA
450T: 115V or 230V AC, ±10%, 50 to 60Hz
Output Range         Power
4 to 20mAÂ Â Â Â Â Â Â Â Â 115V AC @ 0.050A
4 to 20mAÂ Â Â Â Â Â Â Â Â 230V AC @ 0.025A
0 to 5V, 0 to 10VÂ Â Â Â 115V AC @ 0.020A
0 to 5V, 0 to 10VÂ Â Â 230V AC @ 0.010A
Ambient Temperature Range:
Operating: -13 to 185°F (-25 to 85°C)
Storage: -40 to 185°F (-40 to 85°C)
Accuracy:
±0.5% of calibrated span. Includes repeat-ability, hysteresis, terminal point linearity, and adjustment resolution.
Ambient Temperature Effect:
Less than ±0.01% of output span per °F (±0.018% per °C). (Specification includes the combined effects of zero and span over temperature).
Noise Resistance:
RFI: Less than ±0.5% ,of output span effect.
EMI: Less than ±0.25% of output span effect.
Noise Rejection:
Common Mode (-VAC): 120dB at 60Hz, 100 ohm unbalance.
Common Mode (-CACX): 120dB at 60Hz, 1 ohm unbalance.
Normal Mode: Not Applicable.
Response Time: Output reaches 98% of output span in 300mS.
Bandwidth: -3dB at 3 Hz, typical
Output Compliance:
250T: RLOAD (max.) = (VSUPPLY – 12V) / 20mA
350T: RLOAD (max.) = (VSUPPLY – 2.5V) / 20mA
450T: RLOAD = 600 ohms
- Excellent accuracy and stability ensure reliable measurements in harsh industrial environments.
- External AC current sensor with DC mA output enables remote mounting of transmitter (for safe monitoring of the AC signal)
- AC current range is a function of sensor primary turns for easy rescaling in field
- Factory-calibrated AC current transmitter does not need recalibration
- RFI and EMI resistance minimize the effects of environmental noise.
- Compact, 1-inch wide housing uses less space.
- Low power consumption. (350T as low as 9mA).
- 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops.
250T: Input isolated from output/power
350T:
Input isolated from output and power.
Output and power share a common.
450T:
3-way isolation
Input, output, and power circuits are isolated from each other. - Operating temperature range: -13 to 185°F (-25 to 85°C)
Specs & Catalogs
Manuals
250T-CACX User Manual (Log in to download the file)
250T-VAC User Manual (Log in to download the file)
350T-CACX User Manual (Log in to download the file)
350T-VAC User Manual (Log in to download the file)
450T-CACX User Manual (Log in to download the file)
450T-VAC User Manual (Log in to download the file)
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20RM-16-DIN: 19” rack-mount kit with DIN rail
- 19" rack-mount kit with DIN rail
$190Select options -
5020-350: Toroidal AC Current Sensor
- AC Current Sensor to precondition an AC current input signal
- Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
$50Select options
Additional information
Weight | 16 oz |
---|---|
Dimensions | 3 × 1 × 3.2 in |
Part Number | 250T-VAC-DIN-NCR: 0 to 150V AC, 50/60hz AC voltage input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required, 350T-VAC-Y-DIN-NCR: Transmitter, 50/60Hz, 0 to 150V AC voltage input; DIN rail G or T mount; no certification/approval required, 450T-VAC-Y-1-DIN-NCR: 50/60Hz, 0 to 150V AC voltage; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required, 250T-CACX-DIN-NCR: 0 to 20A AC current input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 350T-CACX-Y-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 450T-CACX-Y-1-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor |
Product Series | FlatPack Series |
-
Description
These models convert sensor inputs to proportional process current or voltage output signals.
AC voltage transmitters accept direct voltage inputs. Current models include an external AC current sensor. This toroidal sensor outputs a safe DC milliamp signal which transmits accurately
over long distances. Input span is a function of the primary turns placed on the sensor.Models
250T: Loop-powered transmitter series
350T:Â DC-powered transmitter series
450T:Â AC-powered transmitter seriesPerformance Specifications
Input Ranges:
AC Voltage: 50/60Hz, 0 to 150V AC
AC Current: 0 to 20A
Output Ranges:
DC Current: 4 to 20mA
DC voltage: 0 to 5V or 0 to 10V
Power Requirements:
250T: 12 to 50V DC @ 20mA (loop-powered)350T: DC Voltage Source
Output Range        Power
4 to 20mAÂ Â Â Â Â Â Â Â 10 to 36V DC @ 30mA
0 to 5VÂ Â Â Â Â Â Â Â Â Â Â 10 to 36V DC @ 9mA
0 to 10V        12.5 to 36V DC @ 9mA450T: 115V or 230V AC, ±10%, 50 to 60Hz
Output Range         Power
4 to 20mAÂ Â Â Â Â Â Â Â Â 115V AC @ 0.050A
4 to 20mAÂ Â Â Â Â Â Â Â Â 230V AC @ 0.025A
0 to 5V, 0 to 10VÂ Â Â Â 115V AC @ 0.020A
0 to 5V, 0 to 10VÂ Â Â 230V AC @ 0.010AAmbient Temperature Range:
Operating: -13 to 185°F (-25 to 85°C)
Storage: -40 to 185°F (-40 to 85°C)
Accuracy:
±0.5% of calibrated span. Includes repeat-ability, hysteresis, terminal point linearity, and adjustment resolution.
Ambient Temperature Effect:
Less than ±0.01% of output span per °F (±0.018% per °C). (Specification includes the combined effects of zero and span over temperature).
Noise Resistance:
RFI: Less than ±0.5% ,of output span effect.
EMI: Less than ±0.25% of output span effect.
Noise Rejection:
Common Mode (-VAC): 120dB at 60Hz, 100 ohm unbalance.
Common Mode (-CACX): 120dB at 60Hz, 1 ohm unbalance.
Normal Mode: Not Applicable.
Response Time: Output reaches 98% of output span in 300mS.
Bandwidth: -3dB at 3 Hz, typical
Output Compliance:
250T: RLOAD (max.) = (VSUPPLY – 12V) / 20mA
350T: RLOAD (max.) = (VSUPPLY – 2.5V) / 20mA
450T: RLOAD = 600 ohms -
Features & Benefits
- Excellent accuracy and stability ensure reliable measurements in harsh industrial environments.
- External AC current sensor with DC mA output enables remote mounting of transmitter (for safe monitoring of the AC signal)
- AC current range is a function of sensor primary turns for easy rescaling in field
- Factory-calibrated AC current transmitter does not need recalibration
- RFI and EMI resistance minimize the effects of environmental noise.
- Compact, 1-inch wide housing uses less space.
- Low power consumption. (350T as low as 9mA).
- 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops.
250T: Input isolated from output/power
350T:
Input isolated from output and power.
Output and power share a common.
450T:
3-way isolation
Input, output, and power circuits are isolated from each other. - Operating temperature range: -13 to 185°F (-25 to 85°C)
-
Tech Papers
How to Select the Right Isolator Application NoteThe Ins and Outs of Isolation: A Guide to Selecting the Right Isolator Acromag manufactures a variety of isolators to provide a cost-effective solution for many applications. The primary function of the isolator is to eliminate ground loops that may exist between two or more instruments. A classical application isolates the control room equipment (computers,...How to Use an AC Current Sensor Application NoteUsing Acromag’s AC Current Sensor Model 5020-350 Transmitters with DC current input can be used used in conjunction with an external AC Current Sensor to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low-level, DC milliampere signal (0 to 11.17mA).... -
Specs & Data Sheets
Specs & Catalogs
Manuals
250T-CACX User Manual (Log in to download the file)
250T-VAC User Manual (Log in to download the file)
350T-CACX User Manual (Log in to download the file)
350T-VAC User Manual (Log in to download the file)
450T-CACX User Manual (Log in to download the file)
450T-VAC User Manual (Log in to download the file)
-
Accessories
-
20RM-16-DIN: 19” rack-mount kit with DIN rail
- 19" rack-mount kit with DIN rail
$190Select options -
5020-350: Toroidal AC Current Sensor
- AC Current Sensor to precondition an AC current input signal
- Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
$50Select options
-
-
Additional information
Additional information
Weight 16 oz Dimensions 3 × 1 × 3.2 in Part Number 250T-VAC-DIN-NCR: 0 to 150V AC, 50/60hz AC voltage input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required, 350T-VAC-Y-DIN-NCR: Transmitter, 50/60Hz, 0 to 150V AC voltage input; DIN rail G or T mount; no certification/approval required, 450T-VAC-Y-1-DIN-NCR: 50/60Hz, 0 to 150V AC voltage; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required, 250T-CACX-DIN-NCR: 0 to 20A AC current input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 350T-CACX-Y-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 450T-CACX-Y-1-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor
Product Series FlatPack Series
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