Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.700
Page 34
General data
Humidity range
Measuring mode: Non-condensing (< 95 % RH)
Operating overpressure (max.)
16 bar
Display
Stripe of 4 dual LEDs (green /red / orange)
LED ring
Supply voltage U
B
24 V
DC
± 20 %
Current consumption
Approx. 80 mA (without pulse outputs); max.
200 mA
29
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 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 U
B
(without galvanic separation)
High level: > U
B
- 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
Electrical connection
Main connector:
M12, A-coded, male, 8-pin
Module connector: M12, A-coded, female, 5-pin
Maximum cable length
Voltage signal: 15 m, current signal / pulse: 100 m
Installation position
Arbitrary
Direction / mounting tolerance
Unidirectional / ±3° relative to flow direction
Minimum immersion depth
DN40
Type of protection
IP66 (enclosure), IP67 (sensor probe)
Protection class
III (SELV) or PELV (according EN 50178)
Probe length
- Compact sensor
- Remote sensor
Standard: 250 / 600 mm
Probe:
250 / 600 mm
Cable:
1 … 10 m (steps: 1 m)
Weight
Approx. 500 g max. (without connecting cable)
29
Without signal current of pulse output 2 (relay)
