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  1. Detection - Measurement
  2. Flow, Pressure and Level Measurements
  3. Relative pressure transmitter
  4. KELLER Pressure AG
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Relative pressure transmitter 21C
absolutemembranepiezoresistive

Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive - image - 2
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive - image - 3
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive - image - 4
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive - image - 5
Relative pressure transmitter - 21C - KELLER Pressure AG - absolute / membrane / piezoresistive - image - 6
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Go to the KELLER Pressure AG website for more information

Characteristics

Pressure type
relative, absolute
Technology
membrane, piezoresistive
Output
ratiometric, digital
Mounting
threaded
Fluid
for gas, for liquids
Material
stainless steel, steel
Protection level
EMC, IP67
Applications
for HVAC systems
Other characteristics
compact, precision, CE, temperature-compensated, RoHS, custom-made, fully-welded, economical, oil-filled
Pressure range

Max.: 1,000 bar
(14,503.77 psi)

Min.: 0 bar
(0 psi)

Precision

0.25 %

Long-term stability

0.3 %

Process temperature

Max.: 125 °C
(257 °F)

Min.: -40 °C
(-40 °F)

Description

The pressure transmitters of the 21C series with ratiometric 0,5...4,5V output combine chip-in-oil measuring cells with conventional electrical connections and pressure connections, making them ideal for industrial use. The transmitters are extremely resistant to environmental influences and deliver accurate measurement results over a temperature range of -40 °C to 125 °C.

Exhibitions

Meet this supplier at the following exhibition(s):

SPS 2026
SPS 2026

24-26 Nov 2026 Nuremberg (Germany) Hall 4A - Stand 501

  • More information
    Go to the KELLER Pressure AG website for more information

    Other KELLER Pressure AG products

    Pressure Transmitters

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.