Specifications

Publication 1794-SG002D-EN-P - May 2012
100 Select FLEX Ex I/O Modules
Input frequency range 1.0…32,767 Hz
Frequency resolution, min Sampling Time – Accuracy
2 ms – 0.043%
4 ms – 0.033%
5 ms – 0.031%
10 ms – 0.027%
20 ms – 0.025%
50 ms – 0.023%
100 ms – 0.023%
200 ms – 0.023%
500 ms – 0.023%
1000 ms – 0.023%
Frequency input, characteristics Magnetic pickup: 50 mV, 500 mV
NAMUR: 8V, 8 mA
Flowmeter: low ≥ 3V; high ≥ 6V
Impedance, frequency input > 5 kΩ magnetic pickup
> 10 kΩ flowmeter
Number of outputs 2
FLEX Ex power consumption 4.25 W
Power dissipation, max 4.25 W
Thermal dissipation, max 14.5 BTU/hr
Instrinsically safe input
characteristics
EN 60947-5-6 (NAMUR)
Noxious gas exposure Tested to severity level G3, ISA-S71.04-1985
Dimensions (H x W x D) 46 x 94 x 75 mm (1.8 x 3.7 x 2.95 in.)
94 x 94 x 91 mm (3.7 x 3.7 x 3.6 in.) installed
2 Input Frequency Counter Module
Specification 1797-IJ2