Model 9060Z Manual
1. IMPORTANT NOTICES
This manual is intended as a supplement to the 9060Z Operators Manual. It is intended to be used by technical personal that are qualified to install, commission, service and calibrate electronic industrial control equipment.
Please read the safety information below before connecting power to the transmitter.
CAUTION 1
The probe heater is supplied with mains voltage. This supply has electrical shock danger to maintenance personnel. Always isolate the transmitter before working with the probe. The EARTH wires (green/yellow) from a heated probe must ALWAYS be connected to earth.
CAUTION 2
Combustion or atmosphere control systems can be dangerous. Burners must be mechanically set up so that in the case of equipment failure the system cannot generate explosive atmospheres. This danger is normally avoided with flue gas trim systems by adjustment so that in the case of failure the appliance will not generate CO in excess of 400 ppm in the flue. The CO level in the flue should be measured with a separate CO instrument normally an infrared or fuel cell type.
CAUTION 3
The oxygen probe is heated to over 700°C (1300°F) and is a source of ignition. Since raw fuel leaks can occur during burner shutdown, the transmitter has an interlocking relay that removes power from the probe heater when the main fuel shut‐off valve power is off. If this configuration does not suit or if it is possible for raw fuel to come into contact with a hot oxygen probe then the Model 9060Z transmitter with a heated probe will not be safe in your application. An unheated probe can be utilized in such applications, however the oxygen readings are valid only above 650°C (1200°F).
CAUTION 4
The reducing oxygen signal from the transmitter and the associated alarm relay can be used as an explosive warning or trip. This measurement assumes complete combustion. If incomplete combustion is possible then this signal will read less reducing and should not be used as an alarm or trip. A true excess combustibles analyzer, normally incorporating a catalyst or thermal conductivity bridge, would be more appropriate where incomplete combustion is possible. Also read the probe electrical shock caution in the probe heater interlock caution in chapter 4.7
CAUTION 5
FIL‐3 filter. If the optional FIL‐3 has been fitted to the 9060H probe in this installation, please read the Important Notice regarding probe option FIL‐3 on the previous page.
CAUTION 6
The heater is supplied from the mains power directly, and the temperature is controlled at 720°C (1330°F). The outside of the process end of the probe can get to temperatures that are dangerous to touch. Wear insulating gloves when handling a probe that has been on.
CAUTION 7
7