● without Ex-i interface SIWAREX IS
40 Ω
● with Ex-i interface SIWAREX IS
50 Ω
min. DMS output resistance 4 100 Ω
Temperature coefficient range ≤ ± 5 ppm/K v. E.
Temperature coefficient zero point ≤ ± 0.1 μV/K
Linearity error ≤ 0.01%
Measured value filtering Low pass
Electrical isolation 500 V AC
50 Hz / 60 Hz noise suppression CMRR > 80 dB
Input resistance
● Signal cable
typ. 4*10
6
Ω
● Sensor cable
typ. 2*10
6
Ω
1)
Relative accuracy! (Absolute accuracy is only achieved by calibration on-site with calibration standard)
2)
Accuracy for module replacement or theoretical calibration decisive
3)
Value valid at sensor; voltage drops on cables are compensated up to 5 V
Cable length
Maximum cable length 500 m with SIWAREX cable, → Ordering data
(Page 123).
RS485 interface
Standard EIA-485
Baud rate Up to 115 Kbps
Parity even | odd | none
Terminating resistors (can be activated) 390 Ω / 220 Ω / 390 Ω
Electrical isolation 500 V AC
Transfer protocol
● Display from the Siebert company, type S102
See section: Connection of Siebert display via
RS485 (Page 33)
● Operator Panels or other HMI devices with
RS485 and Modbus protocol RTU
● SIWAREX DB
See section: Connection of the SIWAREX DB
(Page 34)
Cable length ≤ 115 kbps max. 1 000 m
(fieldbus cable 2-wire, shielded, e.g.
6XV1830-0EH10)
Dimensions and weights
Dimensions
● Width
15 mm
● Weight, approx.
31 g
Technical data
12.1 Technical data
SIWAREX WP321
116 Operating Instructions, 08/2019, A5E33715669A-AD
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