PMP71 datasheet(31/124 Pages) EH

31 / 124 page

Cerabar S PMC71, PMP71, PMP75

Endress+Hauser

Detailed Performance

Explanation and Calculation

To calculate the total performance outside the –3 to +53 °C (+27 to +127 °F) temperature range or

for a process isolating diaphragm material other than 1.4435/316L or Alloy C 276, please refer to

the following sections: "Ambient temperature effect" and "Calculation of total performance".

Ambient temperature effect [E2]

• E2 = (E2M · CF1 ) + E2E

• E2M = Main temperature error

• CF1 = Temperature range correction factor

• E2E = Electronics error for analog current output

E2M - Main temperature error

The output changes due to the effect of ambient temperature [IEC 61298-3] with respect to

reference temperature [DIN 16086]. The values specify the maximum error due to min./max.

ambient or process temperature conditions.

The specified error is applicable to the membrane material AISI 316L.

Ambient temperature effect per 28 °C 1) (Per 50 °F) - PMP71 2)

Measuring cell

Standard

Platinum

400 mbar (6 psi)

± (0.04 · TD + 0.08)

1 bar (15 psi)

± (0.04 · TD + 0.08)

2 bar (30 psi)

± (0.04 · TD + 0.08)

4 bar (60 psi)

± (0.04 · TD + 0.08)

10 bar (150 psi)

± (0.03 · TD + 0.03)

40 bar (600 psi)

± (0.03 · TD + 0.03)

100 bar (1500 psi)

± (0.015 · TD + 0.06)

400 bar (6000 psi)

± (0.015 · TD + 0.06)

700 bar (10500 psi)

± (0.015 · TD + 0.06)

Valid for the temperature range 25 °C ± per 28 °C (77 °F ± per 50 °F). In contrast, the electronics error

applies for the entire transmitter temperature range –40 to +85 °C (–40 to +185 °F).

PMP75: Total performance excludes diaphragm seal errors. Those diaphragm seal errors will be calculated

separately in the applicator diaphragm seal calculation module. Link to online tool Applicator:

www.endress.com/applicator → Sizing Diaphragm Seal

CF1 - Temperature range correction factor

Measuring cell

Temperature range

Factor, CF1

400 mbar (6 psi),

1 bar (15 psi),

2 bar (30 psi),

4 bar (60 psi),

10 bar (150 psi),

40 bar (600 psi),

100 bar (1500 psi),

400 bar (6000 psi),

700 bar (10500 psi)

25°C ± per 28°C (77°F ± per 50°F)

–32 to –4 °C (–26 to +25 °F) and

+54 to +85 °C (+129 to +185 °F)

–40 to –33 °C (–40 to –27 °F)

2.3

E2E - Electronics error

Measuring cell

Electronics

Error (%)

For all measuring cells

Digital output (HART/PA/FF)

0 %

Analog output (4 to 20 mA/1 to 5V)

0.05 %

Total error

Total error = total performance + long-term stability

PMP71 Datasheet(PDF) 31 Page - Endress+Hauser Group Services AG

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