1
Seal
2
Top part
3
Separating diaphragm
3a Spring seat
4
Plate
5
Body
6
Spring
5 ... 25 V DC, in accordance with NAMUR and/or DIN 60947-5-6, poten‐
tial-free design.
Install the sensor in accordance with the chapter "Instal‐
lation, electrical". Refer to its documentation.
The sensor is of type NJ1.5-8GM-N.
Specification
Value
Nominal voltage (Ri ~ 1 kΩ)
8 V DC
Power consumption - active surface uncovered
> 3 mA
Power consumption - active surface covered
< 1 mA
Rated switching distance
1.5 mm
Cable colour
Polarity
blue
-
brown
+
For stainless steel dosing heads. Manometer with red / green areas.
11.10 Safety relief valve (Evolution mikro)
Opening pressure at the respective pressure stages:
Pressure stage*
10 bar
16 bar
25 bar
40 bar
64 bar
100 bar
Opening pressure**
14 bar
25 bar
36 bar
50 bar
80 bar
120 bar
* Marking on the indicating scale without valve housing
** back pressure generated by the pump when the pressure side is blocked ± 3 bar
11.11 Sound pressure level of HA2a / HA3a
Sound pressure level LpA < 70 dB (A) in accordance with DIN EN ISO
3744 and DIN EN ISO 20361
at maximum stroke length, maximum stroke rate, maximum back pressure
(water)
NAMUR sensor (Specified for EX zones)
1
2
3
3a
4
5
6
P_HY_0015_SW
Fig. 30: NAMUR sensor
Visual display
Sound pressure level
Technical data
65
Summary of Contents for EMFa
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