Cerabar PMP43

Summary

Product Identification

• Product Name: Cerabar PMP43 4-20mA analog
• Type: Compact digital transmitter with metal process membrane
• Document Revision: TI01757P/00/EN/03.24-00, 2024-09-01

Application Areas

• Reliable, repeatable, and stable pressure measurement and hydrostatic level measurement.
• Process temperature: up to 200 °C (392 °F).
• Accuracy: up to ± 0.075 %.

Benefits

• Fully welded design for perfect cleanability.
• Easy guided commissioning with an intuitive user interface.
• Colored display with backlight and touch operation.
• Bluetooth® wireless technology for commissioning, operation, and maintenance.
• CIP and SIP capabilities up to protection class IP69.

Operating Limits

• Pressure measuring range: up to 100 bar (1500 psi).
• Process temperature: up to 200 °C (392 °F).

Turn Down Calculation

The turn down (TD) is calculated as: $TD = \frac{URL}{|URV - LRV|}$

Measuring Principle

The device utilizes a metallic membrane that deflects under applied pressure. A fill fluid transfers this pressure to a Wheatstone bridge (semiconductor technology). The pressure-dependent change in bridge output voltage is measured and evaluated.

Input

Measured Variable

• Measured Process Variables: Absolute pressure, Gauge pressure
• Calculated Process Variables: Pressure

Measuring Range

Values for Maximum Working Pressure (MWP) and Overpressure Limit (OPL) can deviate from table values based on device configuration.

Absolute Pressure:

• Measuring Cells: 400 mbar (6 psi) up to 100 bar (1500 psi).
• Smallest Factory-Calibratable Span: As low as 0.05 (0.75) or 0.10 (1.50) depending on the measuring cell.
• Largest Factory-Configurable Turn Down: Up to 8:1 or 20:1 depending on the measuring cell.

Gauge Pressure:

• Measuring Cells: 400 mbar (6 psi) up to 100 bar (1500 psi).
• Smallest Factory-Calibratable Span: As low as 0.05 (0.75) or 0.10 (1.50) depending on the measuring cell.
• Largest Factory-Configurable Turn Down: Up to 5:1, 8:1, or 20:1 depending on the measuring cell.

Output

• Output Signal: 2-wire 4 to 20 mA.
• Signal on Alarm: In accordance with NAMUR recommendation NE 43.

Load

Maximum load resistance (RLmax) depends on the supply voltage (U). Formula: $R_{Lmax} = \frac{U - 12V}{23 mA}$.

Damping

• Factory Setting: 1 s (configurable from 0 to 999 s).

Energy Supply

• Supply Voltage: 12 to 30 VDC.
• Terminal Assignment: 2-wire (L+ and OUT (L-)).
• Power Consumption: Maximum current limited to 500 mA for non-hazardous areas to meet IEC/EN 61010 safety specifications.
• Protective circuits: Reverse polarity, HF influences, and overvoltage peaks are installed.

Performance Characteristics

Reference Operating Conditions

• As per IEC 62828-2.
• Ambient temperature: +21 to +33 °C (+70 to +91 °F).
• Humidity: 5 to 80 % RH ± 5 %.
• Atmospheric pressure: 860 to 1060 mbar (12.47 to 15.37 psi).
• Supply voltage: 24 VDC ±3 VDC.
• Measuring cell position: horizontal ±1°.
• Turn down (TD) = URL/|URV - LRV|.

Resolution

• Current output: < 1 µA.

Total Performance

The total performance is calculated as: Total performance = ± $\sqrt{ (E1)^2 + (E2)^2 }$ Where:

• E1 = Reference accuracy
• E2 = Temperature effect

Reference Accuracy [E1]

• Standard Measuring Cell:
  • 400 mbar (6 psi): TD 1:1 = ±0.2 %; TD > 1:1 to 10:1 = ±0.5 % · TD
  • 1 bar (15 psi) to 100 bar (1500 psi): TD 1:1 = ±0.1 % or ±0.075 %; TD > 1:1 to 20:1 = ±0.2 % to ±0.3 % · TD (See document for specific ranges)
• Platinum Measuring Cell:
  • 1 bar (15 psi) to 100 bar (1500 psi): TD 1:1 = ±0.1 % or ±0.075 %; TD > 1:1 to 20:1 = ±0.1 % to ±0.2 % · TD (See document for specific ranges)

Temperature Effect [E2]

• E2M - Main temperature error: Varies based on measuring cell, process connection, and process temperature.
  • For +100 °C (+212 °F) process temperature, values range from ±(0.20 % · TD + 0.10 %) to ±(1.55 % · TD + 0.10 %).
  • For +200 °C (+392 °F) process temperature, values range from ±(0.20 % · TD + 0.10 %) to ±(1.75 % · TD + 0.10 %).
• E2E - Electronics error: 0.2 % for analog output.

Measurement Uncertainty for Small Absolute Pressure Measuring Ranges

• 1 to 30 mbar (0.0145 to 0.435 psi): 0.4 % of reading.
• < 1 mbar (0.0145 psi): 1 % of reading.

Total Error

Total error = Total performance + Long-term stability.

Long-term Stability

• 1 year: ±0.2 %
• 5 years: ±0.4 %
• 10 years: ±0.5 %
• 15 years: ±0.6 %

Response Time

• Dead time (t1): Maximum 50 ms.
• Time constant T63 (t2): Maximum 40 ms.
• Time constant T90 (t3): Maximum 50 ms.
• Step response time: Dead time (t1) + Time constant T90 (t3).

Warm-up Time

• ≤ 10 s.

Mounting

Mounting Position

Orientation depends on the application and can cause zero point shift, which can be corrected electronically.

Mounting Instructions

• Ensure sealing elements have a permanent operating temperature matching the maximum process temperature.
• Suitable for use in wet environments per IEC/DIN EN 61010-1.
• Mounting guidelines similar to manometers.
• Protect housing against impact.
• Devices with CSA approval are intended for indoor use.

Environment

Ambient Temperature Range

• General: –40 to +85 °C (–40 to +185 °F).
• Permitted ambient temperature is reduced at higher process temperatures. See charts in the document for specific relationships between ambient temperature (Ta) and process temperature (Tp) for different maximum process temperature versions.

Storage Temperature

• –40 to +85 °C (–40 to +185 °F).

Operating Height

• Up to 5000 m (16404 ft) above sea level.

Climate Class

• According to IEC 60068-2-38 test Z/AD (relative humidity 4 to 100 %).

Degree of Protection

• IP66/68/69, NEMA type 4X/6P for mounted M12 connecting cable.

Pollution Degree

• Pollution degree 2 according to IEC/EN 61010-1.

Vibration Resistance

• Stochastic noise (random sweep) according to IEC/DIN EN 60068-2-64: Guaranteed for 5 to 2000 Hz: 1.25 (m/s²)²/Hz, ~5 g.
• Sinusoidal vibration according to IEC 62828-1: 10 to 60 Hz ±0.35 mm; 60 to 1000 Hz 5 g.

Shock Resistance

• Testing standard: IEC/DIN EN 60068-2-27.
• Shock resistance: 30 g (18 ms) in all 3 axes.

Electromagnetic Compatibility (EMC)

• As per IEC/DIN EN 61326 series and NAMUR recommendation EMC (NE21).
• Maximum deviation under interference influence: < 0.5 %.

Process

Process Temperature

• Maximum Process Temperature: Varies by version, from +100 °C (+212 °F) up to +200 °C (+392 °F). Version B allows +150 °C (+302 °F) for a maximum of one hour.

Fill Fluid

• Types: Synthetic oil (FDA), Vegetable oil (FDA).
• Temperature Range:
  • Synthetic oil: –40 to +130 °C (–40 to +266 °F) (+150 °C (+302 °F) max. 1h).
  • Vegetable oil: –20 to +200 °C (–4 to +392 °F).

Process Pressure Range

• WARNING: Maximum pressure depends on the lowest-rated component (process connection, optional parts).
• MWP (Maximum Working Pressure): Specified on the nameplate, valid at +20 °C (+68 °F) and applicable for unlimited time. Note temperature dependence.
• OPL (Overpressure Limit): Maximum test pressure, exceeding MWP.
• If OPL of the process connection is less than the nominal value of the measuring cell, the device is factory set to the OPL of the process connection.

Mechanical Construction

Design, Dimensions

Device height is the sum of housing height, configuration-dependent mounted parts, and process connection height.

Dimensions

• Housing: 95 mm (3.74 in) height, 54 mm (2.13 in) diameter.

Weight

• Housing weight (including electronics and onsite display): 0.43 kg (0.95 lb).
• Process connection weight: Varies by type. See tables in the document.

Materials

• Materials in contact with process:
  • EN flanges: AISI 316L.
  • ASME flanges: AISI 316/316L.
  • All other process connections: 316L.
• Membrane material: 316L (1.4435) or Alloy C276.
• Housing: 316L (1.4404).
• Display: Polycarbonate.
• Delta ferrite content: ≤ 3% for wetted parts if option "KD" is selected.

Surface Roughness

• Housing: Ra < 1.6 µm (63 µin), electropolished.
• Wetted parts: Ra < 0.76 µm (29.9 µin) (excluding flanges and threaded connections).
• Parts in contact with process (hygienic): Ra < 0.38 µm (15 µin) electropolished.

User Interface

Languages

Available on the onsite display: English (factory default), Deutsch, Français, Español, Italiano, Nederlands, Portuguesa, Polski, русский язык (Russian), Türkçe, 中文 (Chinese), 日本語 (Japanese), 한국어 (Korean), tiếng Việt (Vietnamese), čeština (Czech), Svenska.

LED Indicator

Displays operating status, fault indication, Bluetooth connection, locking status, and function. Allows easy setup of locking, Bluetooth, and position adjustment.

Onsite Display

• Displays measured values, fault, and notice messages.
• Displays an error symbol.
• Electronically adjustable display (automatic or manual 90° increments).

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Disclaimer: Extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror