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    The Rosemount 1056 is a high performance, multi-parameter liquid analysis transmitter designed for industrial, commercial and municipal applications. Its modular design and dual input channels support a flexible sensor combination to meet the measurement needs of a wide range of parameters such as conductivity, dissolved oxygen, pH, turbidity, and significantly reduce system complexity and cost, while saving installation space.

Core feature
1. Multi-parameter measurement and flexible configuration
- Support single/dual sensor input, can freely combine measurement parameters, such as conductivity (contact/ring), dissolved oxygen, pH/ORP, chlorine, ozone, turbidity, etc., to meet the needs of complex working conditions.
- Modular design allows for on-site replacement of signal input boards and adjustment of configuration without disassembling the device, improving maintenance efficiency.

2. High precision and reliability
- Measuring accuracy up to ±0.05mA (terminal, 25°C), dissolved oxygen resolution up to 0.01ppm, pH accuracy ±0.01pH to ensure data accuracy.
- Support automatic temperature compensation (RTD platinum thermal resistance) and manual slope compensation to adapt to temperature fluctuations.

3. Intelligence and ease of use 
- Quick start programming and automatic sensor plate recognition to simplify installation process.
- Equipped with large size customizable display, real-time display of process parameters and diagnostic information, support Chinese operation interface.

4. Compatibility and scalability
- Compatible with Rosemount's full range of sensors (pH, conductivity, dissolved oxygen, etc.) and supports HART®, Profibus DP and Foundation fieldbus communication protocols for easy integration into PLC/DCS systems.
- Built-in data logger and PID controller for remote access and process optimization.

5. Durable design
- The housing is made of polycarbonate material with IP65/NEMA 4X protection grade, suitable for harsh industrial environment.
- Wide operating temperature range (-20 to 65°C) for extreme operating conditions.

Technical Specifications 
Power options:
- AC power supply (115/230VAC, 84-265VAC) or DC power supply (20-30VDC), supporting a variety of industry standard power supplies.
- Some power supply configurations include 4 programmable relays for enhanced control.

Communication protocols: HART®, Profibus DP, Foundation Fieldbus (some models).

Typical application scenario
- Industrial process control: real-time monitoring of pH and conductivity in chemical and pharmaceutical industries.
- Water quality management: detection of dissolved oxygen, turbidity and residual chlorine in municipal water treatment.
- Environmental monitoring: pH correction and pollutant concentration analysis of sewage discharge.
- Energy industry: Electrical conductivity and dissolved oxygen monitoring of boiler feed water and cooling systems.


Selection guide
Rosemount 1056 Model Code Example:
- **1056-XX-XX-XX-XX**
- ** Electrical source code ** : 01 (115/230VAC), 02 (24VDC with relay), 03 (wide voltage AC with relay).
- ** Measurement channels ** : 20 (contact conductivity), 21 (ring conductivity), 22 (pH/ORP), 25 (dissolved oxygen), etc.
- ** Communication code ** : AN (dual 4-20mA analog output).

Example model:
- **1056-01-25-38-AN** : Single dissolved oxygen sensor input, 230VAC power supply, dual analog output.
- **1056-03-22-35-AN** : pH and dissolved oxygen dual sensor input, wide voltage supply, with relay.

Dimensional Drawings

NOTE: We are the supplier of Rosemount 3051s, you choose our products, you will be satisfied, we have lower price, better supply

Introduction of Xi 'an Lilu Trading Co., LTD

Xi 'an Lilu Trading Co., Ltd. is a professional import and export focus on transmitter, flow meter, positioner instrument industry provider. We have a huge advantage in the following brand ROSEMOUNT, YOKOGAWA, HONEYWELL, SMC, IMI NORGREN, ABB, ENDRESS + HAUSER, FISHER, YTC, AZBIL, SIEMENS, and some European brands.

We look forward to your inquiry and hope that we can start the best cooperation.