Configured for temperature sensor signal digitization in Emerson DeltaV DCS platforms, the Emerson DeltaV KJ3002X1-BF1 (KJ3002X1-BF1 RTD Input Module) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
Suffix / Model Identifier
Module Description
Supported Sensor Inputs
Channel Count
Sensor Resistance Type
KJ3002X1-BF1
DeltaV Temperature Input Module
RTD, Thermocouple, mV, VDC
8 Channels
Resistance Temperature Detector (OHMS)
Hardware Specifications
Parameter
Specification
Model
KJ3002X1-BF1
Brand
Emerson DeltaV
Origin
USA
Weight
0.50 lb
Dimensions
4.1 x 5.2 x 1.2 in
Operating Temp
-40 to +85 deg C
Power Consumption
1.5 W
Input Voltage
12 VDC
Operating Current
160 mA
Input Channels
8 Channels
Measurement Accuracy
+/-0.1% of full scale
Channel Update Rate
8 inputs in 100 ms
Cold Junction Compensation and Signal Conditioning
Multi-Sensor Processing: Interfaces directly with RTD, Thermocouple, mV, and VDC field elements, applying analog-to-digital conversion across all 8 channels simultaneously.
Cold Junction Compensation (CJC): Integrates internal CJC reference networks and lead-wire resistance cancellation to maintain +/-0.1% acquisition precision across the extended operating range.
Channel-to-Channel Isolation: Features complete optical and galvanic isolation barriers that prevent ground loops and shield backplane logic from field voltage surges.
Frequently Asked Questions
Q: What is the dynamic update rate for temperature acquisition on the KJ3002X1-BF1?
A: The module scans, digitizes, and updates process values for all 8 input channels in 100 ms across the backplane local bus.
Q: Does the KJ3002X1-BF1 module support Removal and Insertion Under Power (RIUP)?
A: Yes, the card can be inserted or removed on a powered DeltaV carrier assembly without disrupting active operations on adjacent I/O cards.
Q: How are lead-wire resistance variations mitigated when connecting 3-wire or 4-wire RTDs?
A: The input circuitry uses precision constant-current excitation sources and balanced differential sensing to cancel line-resistance offsets automatically.
Field Installation Guidelines
Carrier Latching: Insert the module firmly into the designated slot on the DeltaV 8-wide carrier base until top and bottom mechanical latches snap into place.
Shield Earth Bonding: Connect sensor shield drain wires directly to the carrier shield grounding bar to suppress ambient high-frequency electromagnetic noise.
Cable Duct Separation: Route low-level RTD and millivolt input signal wires in dedicated, shielded wiring ducts separate from AC power distribution lines.
Terminal Screw Torque: Torque terminal block conductor screws to 0.5-0.6 Nm to maintain gas-tight electrical contact under industrial vibration conditions.
