FEATURES AND APPLICATIONS
The Model 1056 dual-input analyzer offers single or dual sensor input with an unrestricted choice of dual measurements thus reducing the cost per loop and saving panel space. This multi-parameter instrument offers a wide range of measurement choices, including differential conductivity, dual oxygen and many other combinations supporting most industrial, commercial, and municipal applications. The modular design of the instrument allows signal input boards to be field replaced making configuration changes easy.

QUICK START PROGRAMMING
Exclusive Quick Start screens appear the first time the Model 1056 is powered. The instrument auto-recognizes each measurement board and the display prompts the user to configure each sensor in a few quick steps for immediate deployment.

MENUS
Menu screens for calibrating and programming are simple and intuitive. Plain language prompts and help screens guide the user through these procedures.

DUAL SENSOR INPUT AND OUTPUT
The Model 1056 accepts single or dual sensor input. Standard 0/4-20 mA current outputs can be programmed to correspond to any measurement or temperature.

DIGITAL COMMUNICATIONS
HART® and Profi®bus DP digital communications are available. Model 1056 HART® units communicate with the Model 375 HART® hand-held communicator and HART® hosts, such as AMS™ Intelligent Device Manager. Model 1056 Profi®bus units are fully compatible with Profibus DP networks and Class 1 or Class 2 masters. HART® and Profi®bus DP configured units will support any single or dual measurement configurations of Model 1056.

ENCLOSURE
The instrument fits standard ½ DIN panel cutouts. The versatile enclosure design supports panel-mount, pipe-mount, and surface/wall-mount installations.

ISOLATED INPUTS
Inputs are isolated from other signal sources and earth ground. This ensures clean signal inputs for single and dual input configurations. For dual input configurations, isolation allows any combination of measurements and signal inputs without cross-talk or signal interference.

TEMPERATURE
Most measurements require temperature compensation. The Model 1056 will automatically recognize Pt100, Pt1000 or 22k NTC RTDs built into the sensor.

SECURITY ACCESS CODES
Two levels of security access are available. Program one access code for routine calibration and hold of current outputs; program another access code for all menus and functions.

DIAGNOSTICS
The analyzer continuously monitors itself and the sensor(s) for problematic conditions. The display flashes Fault and/or Warning when these conditions occur. Information about each condition is quickly accessible by pressing the diagnostic button on the keypad. Help screens are displayed for most fault and warning conditions to guide the user in troubleshooting.

DISPLAY
The high-contrast LCD provides live measurement readouts in large display digits and shows up to four additional process variables or diagnostic parameters concurrently. The display is back-lit and the format can be customized to meet user requirements.

CURRENT OUTPUTS
Two 4-20 mA or 0-20 mA current outputs are electrically isolated from other signal sources and earth ground. Outputs are fully scalable and can be programmed to linear or logarithmic modes. Output dampening can be enabled with time constants from 0 to 999 seconds.

SPECIAL MEASUREMENTS
- Selective Ion
- pH Independent Chlorine
- Inferential pH
- Differential Conductivity