NR 465.38(9)(c)1.1. For a thermal oxidizer, install a gas temperature monitor in the firebox of the thermal oxidizer or in the duct immediately downstream of the firebox before any substantial heat exchange occurs. NR 465.38(9)(c)2.2. For a catalytic oxidizer, install gas temperature monitors upstream or downstream or both of the catalyst bed as required in sub. (8) (b). NR 465.38(9)(c)3.3. For all thermal oxidizers and catalytic oxidizers, you shall meet the requirements in par. (a) and the requirements in subd. 3. a. to e. for each gas temperature monitoring device. NR 465.38(9)(c)3.a.a. Locate the temperature sensor in a position that provides a representative temperature. NR 465.38(9)(c)3.b.b. Use a temperature sensor with a measurement sensitivity of 5°F or 1.0% of the temperature value, whichever is larger. NR 465.38(9)(c)3.c.c. Before using the sensor for the first time or when relocating or replacing the sensor, perform a validation check by comparing the sensor output to a calibrated temperature measurement device or by comparing the sensor output to a simulated temperature. NR 465.38(9)(c)3.d.d. Conduct an accuracy audit every quarter and after every deviation. Accuracy audit methods include comparisons of sensor output to redundant temperature sensors, to calibrated temperature measurement devices, or to temperature simulation devices. NR 465.38(9)(c)3.e.e. Conduct a visual inspection of each sensor every quarter if redundant temperature sensors are not used. NR 465.38(9)(d)(d) Regenerative carbon adsorbers. If you are using a regenerative carbon adsorber as an add-on control device, you shall monitor the total regeneration desorbing gas mass flow for each regeneration cycle, the carbon bed temperature after each regeneration and cooling cycle, and comply with par. (a) 3. to 5. and subds. 1. to 3. NR 465.38(9)(d)1.1. The regeneration desorbing gas mass flow monitor shall be an integrating device having a measurement sensitivity of plus or minus 10% capable of recording the total regeneration desorbing gas mass flow for each regeneration cycle. NR 465.38(9)(d)2.2. The carbon bed temperature monitor shall be capable of recording the temperature within 15 minutes of completing any carbon bed cooling cycle. NR 465.38(9)(d)3.3. For all regenerative carbon adsorbers, you shall meet the requirements in par. (c) 3. a. to e. for each temperature monitoring device. NR 465.38(9)(e)(e) Condensers. If you are using a condenser, you shall monitor the product side condenser outlet gas temperature and comply with par. (a) and subds. 1. and 2. NR 465.38(9)(e)1.1. The temperature monitor shall provide a gas temperature record at least once every 15 minutes. NR 465.38(9)(e)2.2. For all condensers, you shall meet the requirements in par. (c) 3. for each temperature monitoring device. NR 465.38(9)(f)(f) Concentrators. If you are using a concentrator, such as a zeolite wheel or rotary carbon bed concentrator, you shall comply with the requirements in subds. 1. and 2. NR 465.38(9)(f)1.1. You shall install a temperature monitor in the desorption gas stream. The temperature monitor shall meet the requirements in pars. (a) and (c) 3. NR 465.38(9)(f)2.2. You shall install a device to monitor pressure drop across the zeolite wheel or rotary carbon bed. The pressure monitoring device shall meet the requirements in pars. (a) and (g) 2. NR 465.38(9)(g)(g) Emission capture systems. The capture system monitoring system shall comply with the applicable requirements in subds. 1. and 2. NR 465.38(9)(g)1.a.a. Locate a flow sensor in a position that provides a representative flow measurement in the duct from each capture device in the emission capture system to the add-on control device. NR 465.38(9)(g)1.c.c. Perform an initial sensor calibration in accordance with the manufacturer’s requirements. NR 465.38(9)(g)1.d.d. Perform a validation check before initial use or upon relocation or replacement of a sensor. Validation checks include comparison of sensor values with electronic signal simulations or via relative accuracy testing. NR 465.38(9)(g)1.e.e. Conduct an accuracy audit every quarter and after every deviation. Accuracy audit methods include comparisons of sensor values with electronic signal simulations or via relative accuracy testing. NR 465.38(9)(g)1.g.g. Perform visual inspections of the sensor system quarterly if there is no redundant sensor. NR 465.38(9)(g)2.2. For each pressure drop measurement device, you shall comply with the requirements in par. (a) and subd. 2. a. to g. NR 465.38(9)(g)2.a.a. Locate the pressure sensor in or close to a position that provides a representative measurement of the pressure drop across each opening you are monitoring.