250T-AC, 350T-AC, 450T-AC: Loop, DC, or AC-Power Transmitter

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: DC-powered transmitter series
450T: 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 20mA               10 to 36V DC @ 30mA
0 to 5V                      10 to 36V DC @ 9mA
0 to 10V                12.5 to 36V DC @ 9mA

450T: 115V or 230V AC, ±10%, 50 to 60Hz
Output Range                 Power
4 to 20mA                  115V AC @ 0.050A
4 to 20mA                  230V AC @ 0.025A
0 to 5V, 0 to 10V       115V AC @ 0.020A
0 to 5V, 0 to 10V      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