Differential pressure transmitter MDM7000-LP

piezoresistivesiliconModbus

Description
MDM7000-LP is a smart differential pressure transmitter equipped with a remote diaphragm seal system, designed to measure differential pressure for monitoring liquid level, gas level, density, pressure and gas flow in general and harsh process environments. The transmitter integrates a monocrystalline silicon piezoresistive sensor and offers configurable output options for remote monitoring and control.

Advantages

• Accuracy: ±0.75%
• Measurement range: 0.4 bar – 2.5 bar
• Long-term stability: ±0.1% Span / 10 years
• Monocrystalline silicon piezoresistive sensor for stable performance
• High-overload protection diaphragm to improve overload resistance
• Approvals for vessel installation: DNV, ABS, KR, NK, RS

Features (key technical values)

• Model: MDM7000-LP
• Sensor technology: Monocrystalline silicon piezoresistive sensor
• Measured variables: Differential pressure for liquid level, gas level, density, pressure and gas flow
• Range: 0.4 bar – 2.5 bar
• Accuracy: ±0.75% (plus effects from diaphragm seal system)
• Turn-down ratio: 100:1
• Long-term stability: ±0.1% Span per 10 years
• Ambient temperature effect: (0.375 + 0.125 TD)% / 10°C in range -20°C to 80°C
• Supply voltage range: 18.3 V – 44 V DC (voltage effect ≤ ±0.005%/V)
• Vibration tolerance: ≤ 0.1% Span (GB/T18271.3 / IEC61298-3)
• Output signals: 4–20 mA DC; HART; RS485-Modbus (configurable)
• Ingress protection: IP66 / IP67
• Weight: approx. 6.35 kg (housing only)
• Diaphragm: High-overload protection diaphragm
• Approvals / certificates: DNV, ABS, KR, NK, RS; additional certificates available (CSA, IECEx, ATEX, NEPSI, CE)

Industry application

• Petroleum / Oil & Gas
• Chemical industry
• Power generation
• Steel industry
• Cement
• Pulp & paper
• Food & beverage
• Medical & health
• Water engineering
• General process industries

Technical specifications

• Model: MDM7000-LP
• Sensor: Monocrystalline silicon piezoresistive sensor
• Measured variable: Differential pressure (liquid/gas level, density, pressure, gas flow)
• Range: 0.4–2.5 bar
• Accuracy: ±0.75% (+ diaphragm seal system effects)
• Turn-down: 100:1
• Long-term stability: ±0.1% Span / 10 years
• Outputs: 4–20 mA DC; HART; RS485-Modbus
• Supply voltage: 18.3–44 V DC
• Operating temperature: -20°C to 80°C (see temperature effect)
• Vibration: ≤ 0.1% Span (GB/T18271.3 / IEC61298-3)
• Ingress protection: IP66 / IP67
• Weight: ~6.35 kg (body)
• Diaphragm: High-overload protection
• Certifications: DNV, ABS, KR, NK, RS; optional CSA, IECEx, ATEX, NEPSI, CE