RMG TERZ 94, Operating Instructions Manual

Page: 46 / 66

Specifications
44
Operating Instructions for the TERZ 94 Electronic Turbine Meter
LF output
In the case of the explosion-protected (Ex) design, the device can only be
connected to a certified intrinsically safe circuit. (For Ex connected loads, see
approval certificate.)
Terminals: X4,2
(+)
X4,1 (-)
Output: Open-drain transistor
T
pulse
125 ms ± 10% (F
max
: 4 Hz)
250 ms ± 10% (F
max
: 2 Hz)
Ex
Non-Ex
U
min
: 4.0 V 4.0 V
U
max
: 28 V 30 V
I
max
: 60 mA* (total current) 400 mA
External inductance 1 H
External capacitance 25 µF
* maximum total current of the 3 pulse outputs (LF + HF + Alarm)
Alarm output
In the case of the explosion-protected (Ex) design, the device can only be
connected to a certified intrinsically safe circuit. (For Ex connected loads, see
approval certificate.)
Terminals: X4,6
(+)
X4,5 (-)
Output: Open-drain transistor
Ex
Non-Ex
U
min
: 4.0 V 4.0 V
U
max
: 28 V 30 V
I
max
: 60 mA* (total current) 400 mA
External inductance 1 H
External capacitance 25 µF
* maximum total current of the 3 pulse outputs (LF + HF + Alarm)