Piezoresistive level transmitter MDM7000-LT

for corrosive liquidsfor liquidsfor high-viscosity liquids

Product description
MDM7000-LT is a level transmitter designed for direct flange mounting with diaphragm seal options for measuring high-viscosity, corrosive or easily precipitating media. It transmits media pressure from the flange to the instrument body via a filled capillary/oil system and is available for multiple flange standards. Measuring range: 0.4–2.5 bar.

Advantages

• Measuring range: 0.4–2.5 bar.
• Supports 4–20 mA DC and RS485 Modbus; HART option available.
• Remote configuration and monitoring capability.
• Design includes diaphragm overload protection and EMC protection module.
• Monocrystalline silicon piezoresistive sensing element.
• Approvals for marine installation: DNV, ABS, KR, NK, RS.

Features
Accuracy: ±0.075% URL plus effects of the 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 of span in the range −20°C to 80°C.
Voltage effect: within 18.3–44 V DC, zero and span change ≤ ±0.005% URL/V.
Mounting position: zero offset possible; correctable by PV = 0 reset without affecting span.
Vibration effect: ≤ 0.1% span (GB/T18271.3 / IEC61298-3).
Output signal: 4–20 mA DC, RS485 Modbus; HART option.
IP rating: IP66 or IP67 depending on configuration.
Weight: approx. 12.6 kg (DN50 flange) / 15.5 kg (DN80 flange), excluding capillary tube.

Industry application

• Petroleum
• Chemicals
• Power generation
• Steel production
• Cement
• Pulp and paper
• Water resources and civil engineering

Available documents

• Data sheet (PDF)
• Operation manual (PDF)
• CSA certificate (PDF)
• IECEx certificate (PDF)
• ATEX certificate (PDF)
• NEPSI certificate (PDF)
• CE certificate (PDF)

Technical specifications

• Model: MDM7000-LT
• Measuring range: 0.4 bar to 2.5 bar
• Output: 4–20 mA DC, RS485 Modbus; HART option
• Accuracy: ±0.075% URL + diaphragm seal system effects
• Turn-down ratio: 100:1
• Long-term stability: ±0.1% Span / 10 years
• IP rating: IP66, IP67
• Weight: ~12.6 kg (DN50 flange) / ~15.5 kg (DN80 flange), excluding capillary tube