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

These models convert sensor inputs to proportional process current or voltage output signals.

Models

250T: Loop-powered transmitter series
350T: DC-powered transmitter series
450T: AC-powered transmitter series

Performance Specifications

Input Ranges:
100 ohm Pt RTD (2, 3, or 4-wire), Pt-385/392
10 ohm Cu RTD (2, 3, or 4-wire)

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:
±0.1% of calibrated span or ±0.25 mV, whichever is greater.
Includes repeat-ability, hysteresis, terminal point linearity, and adjustment resolution.
Ambient Temperature Effect:
RBPx: ±0.01% of output span per °F (±0.018% / °C)
RBCx: ±0.025% of output span per °F (±0.045% / °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: 120dB at 60Hz, 100 ohm unbalance.
Normal Mode: 26dB at 60Hz, 100 ohm source, 20dB at 60Hz, 10 ohm source.
Response Time: Output reaches 98% of output span in 350mS.
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

Additional information