Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.600
Page 38
General data
Humidity range
Measuring mode: Non-condensing (
≤ 95 % RH)
Operating pressure (max.)
Standard version:
16 bar
Oxygen version:
20 bar
Optional version:
40 bar
Display
4 x dual-LEDs (green / red / orange)
Supply voltage
24 V
DC
± 20 %
Current consumption
Typ. 80 mA (without pulse outputs); max. 200 mA
26
Analog outputs
- Type: Auto U / I
Switching Auto-U/I
- Voltage output
- Current output
- Switching hysteresis
Maximum load capacitance
Flow velocity, temperature of medium
Automatic switching of signal mode based on load R
L
0 … 10 V for R
L
≥ 550 Ω
4 … 20 mA for R
L
≤ 500 Ω
50
Ω
10 nF
Pulse outputs
- Signaling:
- Pulse output 1:
- Pulse output 2:
f ~ w
N
:
0 m/s … w
N,max
→ 0 Hz … f
max
Standard: f
max
= 100 Hz
Option :
f
max
= 10 … 99 Hz
Option:
1 pulse / 1 m³ | 1 pulse / 0.1 m³ |
1 pulse / 0.01 m³ (max. 100 Hz)
High-side driver connected to supply voltage
(PNP; without galvanic separation)
High level: > supply voltage - 3 V
Short circuit current limitation: 100 mA
Leakage current: I
Off
< 10 µA
Semiconductor relay (output galvanically separated)
Max. 30 V
DC
/ 21 V
AC,eff
/ 50 mA
Connection
Plug-in connector M12 (A-coded), 8-pin, male, screwed
Maximum cable length
Voltage signal: 15 m, current signal / pulse: 100 m
Installation position
Arbitrary (for vertical downdraft flow: lower range limit is
2 m/s at 16 bar)
Mounting tolerance
±3° relative to flow direction (unidirectional)
Minimum immersion depth
DN25
Type of protection
IP66 (housing), IP67 (sensor probe)
Protection class
III (SELV) or PELV (according EN 50178)
ATEX category
II 3G Ex ec ic IIC T4 Gc
II 3D Ex ic tc IIIC 135°C Dc
Probe length L
- Compact sensor
- Remote sensor
Standard:
120 / 250 / 400 / 600 mm
Special:
120 ... 1,000 mm (increment: 10 mm)
Probe:
120 / 250 / 400 / 600 mm
Cable:
10 m (increment: 1 m)
Weight
Approx. 500 g max. (without connecting cable)
26
Without signal current of pulse output 2 (relay)
