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NPEXA-C21

Temperature input isolated barrier, it converts the thermal resistance signals from a hazardous area into 4~20mA signals to a safe area by isolation. It needs an independent power supply. The input, output, and power supply are galvanically isolated from each other. The self-test function is also available on this device. Calibrate the apparatus or modify parameters by using a handheld programmer.

Input signal

Output signal

Channels

Power Supply Mode

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NPEXA-C21

【Core technology】

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【Installation and disposal】



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Installation                                               Disposal  






Supply
Power supply 18 ~ 60 V DC
Input
Input signal Pt100, Cu100, Cu50, BA1, BA2, etc.
Line resistance ≤ 20 Ω per line
Output
Output signal 4 ~ 20 mA
Load resistance RL ≤ 550 Ω
Transfer characterisics
Conversion accuracy-Pt100 -200 ℃ ~ +850 ℃/＜100 ℃，±0.1 ℃/≥100 ℃，±0.1 %F.S.
Conversion accuracy-Cu50 -50 ℃ ~ +150 ℃/＜100 ℃，±0.1 ℃/≥100 ℃，±0.1 %F.S.
Conversion accuracy-Cu100 -50 ℃ ~ +150 ℃/＜100 ℃，±0.1 ℃/≥100 ℃，±0.1 %F.S.
Temperature drift 30 ppm/℃
General parameters
Response time ≤ 500 ms
Power dissipation 0.8 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 -20 ℃ ~ +60 ℃
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, ⅡA, ⅡB, ⅡC, ⅢC, T4 ~ T6
State
Output signal Whatever input fault status (except breakage), the output follows the input within measuring range. And the maximum value would not exceed the 110% of the upper limit of the measuring range.
Mechanical specifications
Connection method Screw connection
Dimension 12.8mm (W) × 110mm (H) × 117mm (D)
Mounting type DIN35 mm
Certified data
Product approvals NEPSI, CE, FCC, CCS, CCC
Ex marking [Ex ia Ga]ⅡC, [Ex ia Da] ⅢC
Um 250 V
Uo 8.7 V (Terminals 1, 2, 3)
Io 33 mA (Terminals 1, 2, 3)
Po 72 mW (Terminals 1, 2, 3)
Co (ⅡC) 5 μF (Terminals 1, 2, 3)
Lo (ⅡC) 28 mH (Terminals 1, 2, 3)
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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