BOSCH REXROTH
R901342026
$416.30 USD
- BOSCH REXROTH
- Material:R901342026
Quantity in stock: 0
The Bosch Rexroth HM 20-2X/250-C-K35 (R901342026) is a high-precision pressure transducer designed to provide reliable and accurate pressure measurements in a variety of hydraulic applications. This sensor is capable of measuring pressures up to 250 bar and features an analog output of 4-20 mA, making it suitable for dynamic pressure control with a short signal rise time of less than 2 ms. The HM 20-2X/250-C-K35 is built with durability in mind, as all components that come into contact with the media are crafted from robust stainless steel, ensuring resistance to corrosion and wear. The device boasts a high degree of measurement accuracy of less than ±0.3% FS and showcases excellent overload and bursting behavior, which contributes to operational safety alongside its reversed polarity, overvoltage, and short-circuit protection features. It employs a thin-film measuring cell known for its precision and reliability. The hydraulic connection is a standard G1/4 thread with an integrated throttle element in the pressure channel. With no display included, the unit's electrical connection is facilitated via a connector pole M12x1, A-coded according to EN standards. The transducer operates on a supply voltage of 10-30 VDC and has a weight of approximately 0.5 kg. Designed for use with hydraulic fluids such as HL, HLP, HFC, and Nitrogen (up to 250 bar), it comes equipped with NBR seals. The Bosch Rexroth HM 20-2X/250-C-K35 transducer conforms to several regulatory standards including CE for electromagnetic compatibility, RoHS Directive EU for hazardous substances, UL recognition for safety compliance in North America, and DNV GL marine approval for use in maritime applications. Furthermore, it operates effectively within a wide temperature range from -40°C up to +125°C and belongs to component series X which indicates its design lineage within Bosch Rexroth's product offerings. Maximum operating pressure is rated at 600 bar while offering various pressure ratings that can cater to different industrial requirements.
Pressure transducer with analog output 4 … 20, pressure range 0 ... 250 bar, connector 4-pole M12x1 A-coded
Short signal rise time
Unpacked Weight: 0.0617 kg
Pressure transducers are used to monitor and control hydraulic pressures. They transform the measured pressure into a normalized, linear, electrical output signal.
| Thin film measuring cell |
| Analog output: 4 … 20 mA |
| Hydraulic connection G1/4 |
| Throttle element in the pressure channel |
| Connector 4-pole, M12x1, A-coded |
| Data Sheet | Download Data Sheet |
| 3D CAD | Download 3D CAD |
| 3D CAD | Download 3D CAD |
| Max. pressure | 250 |
| Electrical connection description | Connector, 4-pole, M12 x 1, coding A according to EN 61076-2-101 |
| Productgroup ID | 9,10,11,12,13,14 |
| Conformity description | CE – electro-magnetic compatibility 2014/30/EU RoHS Directive 2011/65/EU |
| Electrical connector | Connector 4-pole, M12x1, A-coded |
| Display | no |
| Supply voltage | 24 VDC |
| Weight | 0.0617 |
| Seals | NBR |
| Output signal | 4 … 20 mA |
| Hydraulic fluid | HL,HLP,HFC,Nitrogen (up to 300 bar) |
| Conformity | CE,UL,RoHS,DNV |
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01 |
02 |
03 |
04 |
05 |
06 |
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HM20 |
– |
2X |
/ |
– |
– |
K35 |
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01 |
Pressure transducer |
HM20 |
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02 |
Component series 20 ... 29 (20 ... 29: unchanged installation dimensions and pin assignments) |
2X |
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03 |
10 bar |
10 |
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50 bar |
50 |
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100 bar |
100 |
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160 bar |
160 |
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250 bar |
250 |
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315 bar |
315 |
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400 bar |
400 |
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630 bar1) |
630 |
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04 |
Current output 4 to 20 mA 2) |
C |
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Voltage output 0.1 to 10 V |
H |
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05 |
Connector, 4-pole, M12x1 |
K35 |
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06 |
Without throttle element |
ohne Bez. |
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Throttle element (corresponds to 0.3 mm nozzle) 3), 4) |
N |
| 1) | Only available with throttle element |
| 2) | With marine approval DNV-GL |
| 3) | Only available for versions with 250, 315, 400 and 630 bar |
| 4) | Highly dynamic effects in like pressure peaks or cavitation in hydraulic systems may damage the measuring cell. For these applications, devices with integrated throttle element [version "-N"] in the process interface have to be used. |
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Replacement seal ring |
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Designation |
Material number |
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Seal ring NBR |
R900012467 |
Cable sets or mating connectors are not included in the scope of delivery; please order separately.
General
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Component series |
2X |
Eingangsgrößen
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Operating voltage 1) |
US |
16 … 36 VDC | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Residual ripple |
UPP |
2.5 V (40 to 400 Hz) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Maximum current consumption 2) |
Imax |
mA |
≤ 12 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Isolation resistance |
R |
MΩ |
> 100 (500 VDC) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Pressure measuring ranges |
pN |
bar |
10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 | 10 | 50 | 100 | 160 | 250 | 315 | 400 | 630 |
| 1) | With cULus: max. of 30 VDC is admissible |
| 2) | With voltage output |
Output parameters
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Output signal |
admissible load |
Current |
ISig |
4 … 20 mA, RA = (US - 8.5 V) / 0.0215 A with RA in Ω and US in V | |
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Voltage |
USig |
0.1 … 10 V, RA > 2 kΩ | |||
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Setting time (10 ... 90 %) |
t |
ms |
< 1 | ||
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Accuracy class 1) |
% |
< 0.5 | |||
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Temperature coefficient |
Zero point and range |
< 0.1 % / 10 K | |||
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Hysteresis 2) |
% |
< 0.15 | |||
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Long-term drift (1 year) under reference conditions |
% |
< 0.1 | |||
| 1) | Related to the complete measurement range, including non-linearity, hysteresis, zero point and end value deviation (corresponds to the measuring deviation according to IEC 61298-2) |
| 2) | Related to the temperature range -20 … 80 °C |
Ambient conditions
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Ambient temperature range |
ϑ |
°C |
-40 … +85 |
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Storage temperature range |
ϑ |
°C |
-40 … +100 |
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Hydraulic fluid temperature range |
ϑ |
°C |
-40 … +90 |
Other characteristics
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Pressure port 1) |
G1/4 according to DIN 3852 form E, seal ring according to DIN 3869-14 | |||
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Material |
Throttle |
1.4305 | ||
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Housing |
V4A (1.4404), PEI, HNB | |||
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in contact with the medium |
1.4542, 1.4305, NBR | |||
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Pressure media 2) |
HL, HLP, HFC, nitrogen, others upon request | |||
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Tightening torque range |
Measurement ranges > 400 bar |
MA |
Nm |
20 … 25 |
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Measurement ranges ≥ 400 bar |
MA |
Nm |
25 … 30 | |
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Anschlussart |
4-pole M12 connector at the housing | |||
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Type of protection according to EN 60529 |
IP65 / IP67 with mating connector correctly mounted and locked | |||
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Weight |
m |
kg |
0.06 | |
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Life cycle |
60 million load cycles or 60000 h | |||
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Admissible shock and vibration loads according to DIN EN 60068-2-27 |
15 g / 11 ms / 3 axes | |||
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Sine test according to DIN EN 60068-2-6:2008 |
10 ... 2000 Hz / maximum 10 g / 10 cycles / 3 axes | |||
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Noise test according to DIN EN 60068-2-64 |
20 … 2000 Hz / 14 g RMS / 42 g peak / 24 h / 3 axes | |||
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Electro-magnetic compatibility |
EMC EN 61000-4-2 ESD |
4 kV CD / 8 kV AD with BWK B | ||
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EMC EN 61000-4-3 HF radiated |
10 V / m (80 ... 2700 MHz) with BWK A | |||
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EMC EN 61000-4-4 Burst |
2 kV with BWK B | |||
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EMC EN 61000-4-5 Surge |
1 kV / 42 Ω with BWK B | |||
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EMC EN 61000-4-6 HF line-bound |
10 Veff (150 kHz ... 80 MHz) with BWK A | |||
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EMC EN 61000-4-8 Magnetic field 50/60 Hz |
100 A/m with BWK A | |||
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EMC EN 61000-4-9 Magnetic field pulsed |
1000 A/m with BWK A | |||
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EMC EN 55016-2-1 Interference voltage |
0.15 ... 30 MHz, class A, EN 55022 | |||
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EMC EN 55016-2-3 Radio interference field strength |
30 ... 1000 MHz, class B, EN 55022 | |||
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Conformity |
CE according to the EMC directive | |||
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Further tests |
cULus-listed | |||
| 1) | Thorough bleeding must be ensured |
| 2) | Maximum of 300 bar is admissible |
For applications outside these parameters, please consult us!
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Voltage |
Current (two-wire system) |
Values for US, RA and USig, see Technical data
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Values for US, RA and USig, see Technical data
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Dimensions in mm
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1 |
Pressure port G1/4 male thread |
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2 |
Seal ring |
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3 |
4-pole M12 connector |
Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line, cable shielded
4P M12 +
Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line, cable shielded
4P M12 +
For sensors and valves with connector “K24”, “K35” and “K72” Cable sets M12, 4-pole, line cross-section 0.34 mm2Data sheet
Spare parts & repair