Siemens SITRANS F M MAG 5000, Руководство пользователя, Страница: 66 / 107

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11 Technical data
11
11.1 Technical specifications
Mode of operation and design Measuring principle Electromagnetic with pulsed constant field
Empty pipe Detection of empty pipe (special cable
required in remote mounted installation)
Excitation frequency Depends on sensor size
Electrode input impedance > 1 x 10
14
Ω
Input Digital input 11 ... 30 V DC, R
i
= 4.4 KΩ
Activation time 50 ms
Current I
DC 11 V
= 2.5 mA, I
DC 30 V
= 7 mA
Output Current output
Signal range 0 ... 20 mA or 4 ... 20 mA, Alarm
Load < 800 Ω
Time constant 0.1 … 30 s, adjustable (for batch: fixed at 0.1
s)
Digital output
Frequency 0 ... 10 kHz, 50% duty cycle
(uni/bidirectional)
Pulse (active) DC 24 V, 30 mA, 1 kΩ ≤ R
i
≤10 kΩ, short-
circuit protected (power supplied from
flowmeter)
Pulse (passive) DC 3 … 30 V, max. 110 mA, 200 Ω ≤ R
i
≤10
kΩ (powered from connected equipment)
Time constant 0.1 … 30 s, adjustable (for batch: fixed at 0.1
s)
Relay output
Time constant Changeover relay, same as current output
Load 42 V AC/2 A, 24 V DC/1 A
Low flow cut off 0 ... 9.9% of maximum flow
Galvanic isolation All inputs and outputs are galvanically isolated
Max. measuring error
(incl. sensor and zero point)
MAG 5000 0.4% ± 1 mm/s (for v > 0.1 m/s)
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