Allen-Bradley 1797-IE8NF eight-channel intrinsically safe analog input module
| FLEX Ex / 1797-IE8NF |
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08
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ALLEN-BRADLEY / INTRINSICALLY SAFE ANALOG INPUT
1797-IE8NFFLEX Ex · 8 Channels · 16 Bit · Noise Filter
An eight-channel intrinsically safe analog input module engineered for FLEX Ex installations where stable conversion and additional noise filtering are required. REQUEST A QUOTE |
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Sales manager: Miya zheng | sales@amikon.cn | WhatsApp: 86-18020776792
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CHANNELS
8
Single-ended, non-isolated
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CONVERSION
16 bit
Configurable data format
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ACCURACY
0.1%
At 20 C
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DRIFT
0.05%/C
Of signal range
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FILTER
80 ms
Step response to 99%
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INDICATORS
9
8 fault + 1 power
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BASE
TB3 / TB3S
Required connection base
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STATUS
Discontinued
Engineering replacement
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01
FIELD SIGNAL
Intrinsically safe transmitter or simple apparatus |
02
TERMINAL BASE
1797-TB3 or 1797-TB3S connections |
03
IE8NF
Conversion, filtering and channel diagnostics |
04
FLEX Ex ADAPTER
Scaled data and fault state to the controller |
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LOOP CHECK / 01
Is Allen-Bradley 1797-IE8NF a direct replacement for 1797-IE8?No. Both provide eight intrinsically safe analog inputs, but 1797-IE8NF uses an 80 ms filtered response while 1797-IE8 responds in 4 ms. Confirm process dynamics and configuration. |
LOOP CHECK / 02
Which base must be used with Allen-Bradley 1797-IE8NF?Use 1797-TB3 or 1797-TB3S. Check the complete terminal assignment and ensure prohibited terminals remain unused. |
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LOOP CHECK / 03
What hazardous-area checks are required for Allen-Bradley 1797-IE8NF?Verify area classification, apparatus class, entity voltage, current and power limits, cable parameters, enclosure, ambient range and grounding before installation. |
LOOP CHECK / 04
What should be saved before replacing Allen-Bradley 1797-IE8NF?Save channel scaling, data format, alarm thresholds, fault actions, adapter setup, terminal positions and measured loop values. |
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LOOP CHECK / 05
Why can Allen-Bradley 1797-IE8NF reduce unstable readings?Its longer response incorporates additional noise filtering. This can stabilize slow analog signals but is unsuitable when the application requires rapid response. |
LOOP CHECK / 06
How is Allen-Bradley 1797-IE8NF commissioned safely?Verify the power and fault indicators, inject controlled loop signals, confirm scaling and alarms, test open-circuit behavior and preserve all intrinsic-safety controls. |
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