Pressure switches type MAP
with fixed differential
MAP pressure switches produce an
electrical make/break contact which is
triggered when pressure in the hydrau-
lic circuit reaches a given setting.
Fluid pressure in the circuit operates a
piston 쩸 flitted with adjustable spring
bias 쩹; once the pressure setting is
reached, the piston is urged forward so
as to actuate a microswitch 쩺 and
make or break its contacts.
The pressure setting is selected by tur-
ning a graduated control knob 쩻.
Clockwise rotation increases the set-
ting pressure.
Pressure switches are designed to
operate in hydraulic systems with
hydraulic mineral oil or synthetic fluid
having similar lubricating characteri-
stics.
Max pressure = 650 bar
Assembly position / location Any position
Subplate surface finishing Roughness index flatness ratio 0,01/100 (ISO 1101)
Ambient temperature from -20°C to +70°C
Fluid Hydraulic oil as per DIN 51524 .... 535; for other fluids see section
쪧
Recommended viscosity 15 ÷ 100 mm
2
/s at 40°C (ISO VG 15 ÷ 100)
Fluid contamination class ISO 19/16, achieved with in line filters at 25 µ value and ß
25
≥ 75 (recommended)
Fluid temperature T ≤ 80°C; if T ≤ 60°C select /PE seals
2
MAIN CHARACTERISTICS OF PRESSURE SWITCHES TYPE MAP
햲 Servo-piston
햳 Spring
햴 Microswitch
햵 Control knob
햶 Body
햷 Switch actuator
햸 Control knob setscrew
햹 Electric connector
Threated connections for BMM and BFM adaptors, see section 쪭
BMM BFM
06 = G 1/4" 06 = G 1/4"
10 = G 3/8" 10 = G 3/8"
15 = G 1/2" 15 = G 1/2"
20 = G 3/4"
BMF 25 = G 1"
06 = G 1/4" 32 = G 1
1
/
4
"
Port to serve for BHM and BKM adaptors, see section 쪭
11 = port P 14 = port B
12 = port A und B 17 = port P and A
13 = port A 18 = portP and B
Options:
E = Common electric contact connected
to pin 1 (see section 쪩)
Synthetic fluids:
WG = water-glycol
PE = phosphate ester
MAP
Fixed differential
pressure switch
1
Pressure range:
40 = 5 ÷ 40 bar
80 = 7 ÷ 80 bar
160 = 10 ÷ 160 bar
320 = 30 ÷ 320 bar
630 = 50 ÷ 630 bar
Type of adaptor (if required), see section
쪬
and
쪭
/M = BMM – adaptor - male fittings
/MF = BMF – adaptor - female fittings
/F = BFM – adaptor - in line mounting
/H = BHM adaptor - modular mounting
ISO 4401 size 06
/K = BKM adaptor - modular mounting
ISO 4401 size 10
160-06
/WG
MODEL CODE
/M /E **
Series number
Max current [A]
- inductive load (Cos ϕ = 0,4) -
Max current [A]
- resistive load -
D250
3 MAIN CHARACTERISTICS AND WIRING OF INTERNAL MICROSWITCH
Insulating resistance ≥ 100 MΩ
Contact resistance = 15 mΩ
Electrical life-expectancy ≥ 1.000.000 switchings
Mechanical life-expectancy
≥ 10.000.000 switchings
7550,2
4 2 3 0,02
125 AC 250 AC 30 DC 250 DC
Supply voltage [V]
Resting position Pressure operated position
STD
/E
Table D250-0/Ewww.atos.com
Note: special version with gold-plated microswitch contact available on request
ABØ DEFGH
BFM-06 50 20 19 G 1/4" 22,5 1 12
BFM-10 50 20 23 G 3/8" 22,5 1 12
BFM-15 50 20 27 G 1/2" 22,5 1 15
BFM-20 50 20 33 G 3/4" 22,5 1,5 17
BFM-25 70 30 40 G 1" 30 1,5 19
BFM-32 70 30 50 G 1
1
/4"30 1,5 22
7 DIMENSIONS OF ADAPTORS [mm]
07/09
6 MODEL CODE FOR ADAPTORS WHEN SUPPLIED SEPARATELY
BHM
Type of adaptor
BMM = male
BMF = female
BFM = in-line
BHM = ISO 4401 size 06
BKM = ISO 4401 size 10
**
–
BFM - In-line mounting:
BKM - Modular mounting surface ISO 4401-05-03-0-05BHM - Modular mounting surface ISO 4401-03-02-0-05
Weight: 2 Kg
Weight: 1,2 Kg
Weight: 0,8 Kg
Threated connections for BMM and BFM adaptors, see section
쪭
BMM BFM
06 = G 1/4" 06 = G 1/4"
10 = G 3/8" 10 = G 3/8"
15 = G 1/2" 15 = G 1/2"
20 = G 3/4"
BMF 25 = G 1"
06 = G 1/4" 32 = G 1
1
/4"
Port to serve for BHM and BKM adaptors,
see section
쪭
11 = port P
12 = port A and B
13 = port A
14 = port B
17 = port P and A
18 = port P and B
For versions 11 and 13 the pressure switch is mounted on side of port A. For version 14 the pressure switch is mounted on side of port B. For versions 12, 17, 18 the pressure switch is
mounted on both sides.
4 DIAGRAMS
5 DIMENSIONS OF MAP WITHOUT ADAPTORS [mm]
20
16
12
8
4
0
20 40
60
80
100
Cut-in pressure [bar]
MAP*/80
Differential pressure [bar]
20
16
12
8
4
0
40 80
120
160
200
Cut-in pressure [bar]
MAP*/160
Differential pressure [bar]
Cut-in pressure [bar]
MAP*/320
Differential pressure [bar]
The graphs show, according to the set cut-in pressure, the pressure difference between the insert and the at-rest positions of the pressure switch electric
contacts.
Fastening bolts:
4 socket head screws M5X90 supplied with the pressure switch
20
16
12
8
4
0
10 20
30
40
50
Cut-in pressure [bar]
MAP*/40
Differential pressure [bar]
Cut-in pressure [bar]
MAP*/630
Differential pressure [bar]
through
ABCØ DEF
BMM-06 22,5 11 1,5 18 G 1/4" 20
BMM-10 23,5 11,5 2 22 G 3/8" 20
BMM-15 27,5 15 2,5 26 G 1/2" 20
BMM - Male fittings:
BMF - Female fittings:
Weight: 0,3 Kg
OR-2021/70
Scattering range Scattering range Scattering range
Scattering rangeScattering range
