Metex 2200R ORP Analyzer/Controller - Manual (Page 10)

Model 2200R Page 8
4.0 Description of Functions
4.1 Overview
4.1.1
The Model 2200R is a microprocessor operated ORP analyzer designed for
industrial applications. It is compatible with a wide range of AquaMetrix ORP
probes and offers several measurement ranges. The software in the unit makes the
instrument very easy to operate and maintain.
4.1.2
The outputs include voltage-free relay contacts and industry standard analog
transmission signals. Three programmable relays are provided for process control
and alarm. The status of each relay is indicated on the front panel by an LED. The
analog output signals transmit low power signals to peripherals such as data
recorders and PLCs.
6.3.1 The software is designed for ease of operation. It uses a simple menu with all items
indicated on the panel. The user interface consists of six buttons on the front panel.
The buttons are scanned and responded continuously. In addition, an extensive
system of checking values and parameters is performed by the software. All of the
operating parameters are stored in non-volatile memory, without the need of a
battery.
4.1.4 The Model 2200R operates like a normal analog converter with a number of
additional functions made possible by the microprocessor in the instrument.
Some of these are:
• Recall and easy adjustment of relay and output parameters
• Push button calibration
• A HOLD function which freezes outputs when in menu mode
• Continuous checking of the probe during measurement
• Continuous self-check and watch-dog timer to ensure correct system operation
• Simulated input for testing
• Password protection of stored values
• Temperature Output
• Cycling feature for Control Relays A and B