F323738 is not a standard model. It should be the customized / version / internal number of HIMA F3237. The standard model is F3237 (material number 984323702).

1. Number Interpretation

F3237: Basic model (8 channels SIL3 safety DI, NAMUR)

38: Version / batch / customization code, not a necessary part of the model

Standard material number: 984323702 (F3237)

II. Core Parameters (Standard) of F3237

Channels: 8 safety DI channels, SIL3/AK6/Cat.4/PL e

Signals: 24 VDC dry contacts / 8 mA NAMUR (DIN 19234)

Diagnosis: Single-channel open circuit / short circuit / line resistance (≤ 50Ω) detection

Response: Typical 10 ms

Power supply: Backplane 5 VDC (90 mA) + 24 VDC (170 mA)

Isolation: 2 kVrms; Environment: -20℃ to +60℃, IP20

Platform: HIMatrix F3 series chassis (F3112/F3114), in production

III. Differences from Similar Models

F3237 (8 channels, 8 mA NAMUR, F3 series, in production)

F323738: Same as F3237, only version/customization differences

F3236 (16 channels, 6 mA, H41q/H51q, discontinued)

F3226A (16 channels, 8 mA, F3 series, in production)

IV. Ordering and Alternatives

Standard Order: F3237 (984323702), can place an order for new goods directly

F323738: Order as F3237, the arrival is consistent; "38" does not affect functionality and interchangeability

Alternatives: 8 channels select F3237; 16 channels select F3226A