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NPEXB-KM31

Analog output isolated barrier, it transfers 4~20mA signals from a safe area to a hazardous area. It allows transmission of HART communication signals. The input, output, and power supply are galvanically isolated from each other. Besides, the LFD (line fault detection of field connections) function of output circuit is available.

Input signal

Output signal

Channels

Power Supply Mode

HART

LFD

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NPEXB-KM31

【Core technology】

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【Installation and disposal】



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Installation                                               Disposal 



Supply
Power supply 20 ~ 30 V DC
Input
Input signal 4 ~ 20mA, HART
Input voltage drop ≤ 1.2 V
Output
Output signal 4 ~ 20mA, HART
Load resistance 80 ~ 800 Ω
Transfer characterisics
Accuracy 0.1 %F.S.
Temperature drift 30 ppm/℃
General parameters
Response time ≤ 2 ms
Power dissipation ≤ 1.0 W
EMC data
Electromagnetic compatibility IEC 61326-3-1
Dielectric strength ≥ 3000V AC (intrinsically safe side / non-intrinsically safe side); ≥ 1500V AC (Power supply /non-intrinsically safe side)
Insulation resistance ≥ 100 MΩ (Input /Output/Power supply)
Operating conditions
Operation temperature -40°C ~ +70°C
Storage temperature -40 ℃ ~ +80 ℃
Suitable location Mounting in safe area, and connected to the intrinsic safety apparatus in hazardous area zone 0, zone 1, zone 2, ǀ, ⅡA, ⅡB, ⅡC, ⅢC, T4 ~ T6. When the apparatus used in zone 2, please comply with the special conditions of use in the instructions.
State
Safe state The output signal is less than 3.6mA or greater than 21.5mA
Mechanical specifications
Connection method Screw connection
Dimension 12.8mm (W) × 110mm (H) × 117mm (D)
Mounting type DIN35 mm
Certified data
Product approvals ATEX, IECEx, SIL, CCC
Type of equipment Type A
Hardware fault margin(HFT) 0
Mode of demand low/high
Safety integrity level(SIL) SIL2
λS (1 FIT=10-9/h) 541.155 FIT
λDU (1 FIT=10-9/h) 25.298 FIT
λDD (1 FIT=10-9/h) 0.546 FIT
λTOTAL (1 FIT=10-9/h) 567.606 FIT
SFF > 60%
PFDavg(T1=1Y) 1.11E-04
PFH 2.53E-08 1/h
Ex marking [Ex ia Ma] Ⅰ、[Ex ia Ga] ⅡC、[Ex ia Da] ⅢC、Ex ec [ia Ga] ⅡC T4 Gc
Um 250 V
Uo 25.2 V (Terminals 1, 2)
Io 93 mA (Terminals 1, 2)
Po 586 mW (Terminals 1, 2)
Co (ǁC) 0.107 μF (Terminals 1, 2)
Lo (ǁC) 4.2 mH (Terminals 1, 2)
NPPB-DIN Bus rail power supply
35mm standard rail
NPPB-BS210 I/O terminal base
Connect the rail BUS base, external power is introduced through the terminal block of the base. If a redundant power module is selected, this terminal can be left unselected.
NPPB-BSC028 Dust cover
Protect the exposed bus and split the combination as needed.
NPPB-SS5 Limiter
For fixed position, standard 2 sets
NPPB-TS35B Fixed piece
Material: metal iron, used for rail load-bearing reinforcement, standard 2 pieces
NPEXA-C11

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