Union Instruments CWD2000 EX, Original Operating Instructions

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Operation
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Main menu - Options - System - Ignition
The ignition type can be individual ignition or interval ignition. The ignition break
always equals the ignition duration. The longest possible ignition duration is 100
sec. Normally it should be between 15 and 20 sec. Upon reaching the ignition
threshold the ignition stops.
The ignition threshold specifies at which centigrade value the thermal battery
considers the flame to be burning. The flame temperature depends on the gas
composition. The settings are done accordingly. The manufacturer pre-sets the
optimum temperature for the ordered measuring range. In this example 3°C
differential temperature between cooling air and flue gas.
Main menu - Options - System - CSV export
Here you export the data as ASCII files. The values are TAB-separated. In one go,
all possible 25 curves are written in one CSV file. This file can be processed with
Excel.
Main menu - Options - System - Signal hold on/off
Here, the last measured values are issued as constant signal during the calibration.
This refers to all 4-20 mA signals. They are always switched on or off jointly.