Dew Point Transmitter
The Novatech 1738 Transmitter detects changes in the Dew Point in annealing furnaces. This allows operators to take corrective action to prevent expensive re-work due to oxidation of the product. The dew point is calculated from the amount of oxygen measured in the furnace. The unique sensor manufactured by Novatech uses a catalyst that attracts oxygen molecules in the same way as the surface of the steel inside the furnace.
The analyser is easy-to-operate, reliable and maintenace free. Furthermore it is accurate for continuous monitoring of oxygen in hydrogen/nitrogen atmospheres used in annealing furnaces. The unique dual sensor prevents costly shutdowns on sensor failures.
Specifications :
Inputs
- One or two zirconia oxygen probes or sensors
- One zirconia sensor & auxiliary thermocouple type J, K, R, S or N
- Burner “On” signal (dry contact)
- Purge air flow switch
Outputs
- Four programmable alarm relays
- Two isolated 4-20mA or 0-20mA
- SSR outputs to purge & calibration check gas and solenoid valves
Range of Outputs
- Dew Point -60 to 40C
- Average Dew Point -60 to 40C
- Linear Oxygen 0 to 100%
- Average Linear Oxygen 0 to 100%
- Reducing Oxygen
- Average Reducing Oxygen
- Pre-Reactive Oxygen
- Average Pre-Reactive oxygen
- Probe EMF 0 to 1300 mVolt
- Auxiliary TC Temperature 0 to 1400°C
