650T series

Key Features:

These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals .Each channel operates independently and is isolated from the others to prevent interaction between channels.

• Two channels in a single unit saves space and reduces costs .
• Signal splitter model (653T) provides two identical outputs from one input signal .
• Galvanic isolation eliminates ground loops, reduces noise, and blocks transient signals .
• Independent channels prevent signal interaction and offer spares for later use .
• Power LEDs provide a visual indication of operational process loops .
• Excellent accuracy and stability ensure reliable

Product Details

Input range
– 4 to 20mA input (each channel).
Input burden
– Voltage drop (651T, 652T): Less than 1 .5V, typical (75 ohm equivalent).
– Voltage drop (653T): Less than 3 .0V, typical (150 ohm equivalent).
Output range
– 4-20mA DC output (each channel).
– Rl = (Psupply-12V) / 0 .02
Output compliance
– Psupply = 12V + (0 .02 x Rload)
Output limiting
– Outputs are limited to 36mA .
– Output ripple
– Less than ±0 .1% of the maximum output span .
– ±0 .1% of output span .Error includes the combined effects of isolator repeatability, hysteresis, terminal
point linearity and adjustment resolution .
Ambient temperature effect
– Less than ±0 .006% of input span per °F (±0 .01% per °C) over the ambient temperature range for reference
test conditions .This specification includes the combined effects of zero and span over temperature .
– Two 15-turn potentiometers (zero and span) per channel, accessible from front of the unit .
-3dB at 45Hz, typical .
Response time
– For a step input, the output reaches 98% of output span in 15mS, typical .
Noise rejection
– Common mode: 100dB at 60Hz, typical .
– Normal mode: -5dB at 60Hz, 100 ohm source, typical .
– LED power indicator: Off for output open loop detection, power, or load compliance problem .
– Field test points: An internal 10 ohm sense resistor provides test points for monitoring the output signal
current during field maintenance .


Ambient Temperature
– Operating: -25 to 70°C (-13 to 158F) .
– Storage: -40 to 85°C (-40 to 185°F) .
Relative Humidity
– 5 to 95% .
Power Requirement
– 12 to 50V DC for each output channel .
– Inputs, outputs, and individual channels are isolated from each other for common-mode voltages up to 250V AC, or 354V DC off ground, on a continuous basis (will withstand 1500V AC dielectric strength test for one minute without breakdown) .
Radiated Field Immunity (RFI)
– Complies with EN61000-4-3 Level 3 (10V/m, 30 to 1000MHz) and European Norm EN50082-1 .
Electromagnetic Field Immunity (EMI)
– Less than ±0 .25% of output span effect under the influence of electromagnetic fields from switching
solenoids, commutator motors, and drill motors .
Surge Immunity
– Complies with EN61000-4-5 Level 3 (2KV) and European Norm EN50082-1 .
– Electrical Fast Transient (EFT) Complies with EN61000-4-4 Level 3 (2KV) and European Norm EN50082-1 .
Electrostatic Discharge (ESD)
– Complies with EN61000-4-2 Level 3 (8KV air, 4KV direct to the enclosure port) and European Norm
EN50082-1 .
Radiated Emissions
– Meets or exceeds European Norm EN50081-1 for Class B equipment .
– CE marked, UL & cUL listed .
– Hazardous Locations: Class I: Div .2; Groups A, B, C, D