ZHONGHE
ZHONGHE 8000B/072 Dual-channel Thermal Expansion Monitoring
In stock, ready to ship
Manufacturer: ZHONGHE
Product No.: 8000B/072
Product Type: Expansion Monitoring
Product Origin: USA
Payment: T/T
Weight: 760g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
The ZHONGHE 8000B/072 is a precision dual-channel thermal expansion monitoring module used in critical turbine protection applications. It measures cylinder thermal expansion using TD-2 LVDT linear displacement sensors, offering real-time monitoring, alarms, and analog output for control systems.
With an onboard 4-digit LED display, this module helps operators detect abnormal growth before mechanical damage occurs. Designed for integration with ZHONGHE’s 8000B series, the 8000B/072 supports communication with DCS systems via RS232 or RS485, using the MODBUS-RTU protocol.
Key Features
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Dual-Channel Measurement: Simultaneously monitors expansion at two independent points
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Real-Time Display: LED screen provides 0.1 mm resolution for high visibility
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Sensor Compatibility: Designed for use with TD-2 LVDT linear displacement sensors
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Analog & Relay Outputs: Supports both current signal output and relay-based alarms
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Flexible Communication: Interfaces with industrial control systems over RS232 or RS485
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MODBUS-RTU Protocol: Ensures easy integration with standard DCS or SCADA systems
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Safety-Oriented Design: Helps prevent turbine damage due to over-expansion
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Compact Form Factor: Occupies one slot in the 8000B chassis
Technical Specifications
| Parameter | Description |
|---|---|
| Model | 8000B/072 |
| Manufacturer | ZHONGHE |
| Product Type | Dual-Channel Thermal Expansion Monitoring |
| Sensor Type | TD-2 LVDT linear displacement sensor |
| Measurement Range | 0–50 mm (default: 0–35 mm) |
| Display | 4-digit LED, 0.1 mm resolution |
| Accuracy | ±1.5% of full scale |
| Analog Output | 4–20 mA or 0–10 mA, max load 500 Ω |
| Alarm Output | Relay: 2A @ 28VDC or 1A @ 250VAC |
| Communication Ports | RS232, RS485 |
| Communication Protocol | MODBUS-RTU |
| Power Consumption | ≤10 W |
| Operating Temperature | 0°C to 45°C (limit: –10°C to 50°C) |
| Storage Temperature | –40°C to 60°C |
| Humidity Range | 20% to 90% RH |
| Installation | One-slot module for 8000B series chassis |
| Weight | 3629 g (approx. 3.63 kg) |
| Country of Origin | USA |
Application & Use Cases
The 8000B/072 is engineered for real-time monitoring of turbine cylinder growth due to thermal expansion. This module helps plant operators protect critical rotating equipment from mechanical damage by triggering alarms and system responses when thresholds are exceeded.
It is ideal for:
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Power plants with large steam or gas turbines
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Industrial facilities requiring real-time thermal growth detection
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Critical rotating machinery with tight clearances and high thermal loads
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Expansion monitoring in petrochemical or heavy manufacturing environments