NR 463.26(2)(c)2. 2. For each CPMS for scrubber liquid flow rate, you shall do all of the following:

NR 463.26(2)(c)2.a. a. Locate the flow sensor and other necessary equipment in a position that provides a representative flow and that reduces swirling flow or abnormal velocity distributions due to upstream and downstream disturbances.

NR 463.26(2)(c)2.b. b. Use a flow sensor with a minimum measurement sensitivity of 2% of the flow rate.

NR 463.26(2)(c)2.c. c. Conduct a flow sensor calibration check at least semiannually according to the manufacturer’s instructions.

NR 463.26(2)(c)2.d. d. At least monthly, inspect all components for integrity, all electrical connections for continuity and all mechanical connections for leakage.

NR 463.26(2)(d) (d) For each combustion device subject to the operating limit in s. NR 463.23 (1) (b) 3. or 4., you shall install and maintain a CPMS to measure and record the combustion zone temperature according to the following requirements, as applicable:

NR 463.26(2)(d)1. 1. Locate the temperature sensor in a position that provides a representative temperature.

NR 463.26(2)(d)2. 2. For a non-cryogenic temperature range, use a temperature sensor with a minimum tolerance of 2.2°C or 0.75% of the temperature value, whichever is larger.

NR 463.26(2)(d)3. 3. For a cryogenic temperature range, use a temperature sensor with a minimum tolerance of 2.2°C or 2% of the temperature value, whichever is larger.

NR 463.26(2)(d)4. 4. Shield the temperature sensor system from electromagnetic interference and chemical contaminants.

NR 463.26(2)(d)5. 5. If you use a chart recorder, it shall have a sensitivity in the minor division of at least 20°F.

NR 463.26(2)(d)6. 6. Perform an electronic calibration at least semiannually according to the procedures in the manufacturer’s owners manual. Following the electronic calibration, conduct a temperature sensor validation check, in which a second or redundant temperature sensor placed nearby the process temperature sensor shall yield a reading within 16.7°C of the process temperature sensor’s reading.

NR 463.26(2)(d)7. 7. Conduct calibration and validation checks any time the sensor indicates a temperature that exceeds the manufacturer’s specified maximum operating temperature range, or install a new temperature sensor.

NR 463.26(2)(d)8. 8. At least monthly, inspect all components for integrity and all electrical connections for continuity, oxidation and galvanic corrosion.

NR 463.26(2)(e) (e) For each wet acid scrubber subject to the operating limits in s. NR 463.23 (1) (b) 5., you shall install and maintain CPMS to measure and record the scrubbing liquid flow rate according to the requirements in par. (c) 2. and do either of the following:

NR 463.26(2)(e)1. 1. Install and maintain CPMS to measure and record the pH of the scrubber blowdown according to all of the following requirements:

NR 463.26(2)(e)1.a. a. Locate the pH sensor in a position that provides a representative measurement of the pH and that minimizes or eliminates internal and external corrosion.

NR 463.26(2)(e)1.b. b. Use a gauge with a minimum measurement sensitivity of 0.1 pH unit or a transducer with a minimum measurement sensitivity of 5% of the pH range.

NR 463.26(2)(e)1.c. c. Check gauge calibration quarterly or transducer calibration monthly using a manual pH gauge.

NR 463.26(2)(e)1.d. d. At least monthly, inspect all components for integrity, all electrical connections for continuity and all mechanical connections for leakage.

NR 463.26(2)(e)2. 2. Extract a sample for analysis by a pH meter that has all of the following:

NR 463.26(2)(e)2.a. a. A range of at least 1 to 5 pH units or more.

NR 463.26(2)(e)2.b. b. An accuracy of 0.1 pH unit.

NR 463.26(2)(e)2.c. c. A resolution of at least 0.1 pH unit.

NR 463.26(2)(f) (f) You shall operate each CPMS used to meet the requirements of this subchapter according to all of the following requirements:

NR 463.26(2)(f)1. 1. Each CPMS shall complete a minimum of one cycle of operation for each successive 15-minute period. You shall have a minimum of 3 of the required 4 data points to constitute a valid hour of data.

NR 463.26(2)(f)2. 2. Each CPMS shall have valid hourly data for 100% of every averaging period.

NR 463.26(2)(f)3. 3. Each CPMS shall calculate and record the hourly average of all recorded readings and the 3-hour average of all recorded readings.

NR 463.26(2)(g) (g) For each automated conveyor and pallet cooling line and automated shakeout line at a new iron and steel foundry subject to the VOHAP emission limit in s. NR 463.23 (1) (a) 10., you shall install, operate and maintain a CEMS to measure and record the concentration of VOHAP emissions according to all of the following requirements: