Hydrometeorological Instruments and Accessories

Notice Number: 145035-26-0012JRW Notice Type: Sources Sought Synopsis Title: PSL OTT Hydromet Instruments and Accessories Response Date: July 6, 2026

This is a SOURCES SOUGHT SYNOPSIS and is not a pre-solicitation announcement. The purpose of this Market Research and Sources Sought Notice is to gain knowledge of potential qualified businesses, which could include Small Business, HUBZone, 8(a), Service Disabled Veteran Owned, Women Owned Small Business firms and even Large Businesses offering domestically manufactured products that meet the required specifications. Responses to this Sources Sought Synopsis will be used by the Government in making appropriate acquisition decisions. The National Oceanic and Atmospheric Administration (NOAA) Physical Sciences Laboratory relied on Eppley PSP and PIR sensors as the standard for shortwave and longwave radiation measurements in PSL sea-going flux systems. These sensors were selected for their high performance and consistency, enabling the collection of long-term, high-quality data records and serving as calibration references for other platforms like buoys and research vessels. Unfortunately, Eppley has gone out of business and no longer provides support for these instruments. As a result, PSL begun transitioning to sensors from Kipp & Zonen, whose CGR4 and CMP22 models offer comparable precision and accuracy. INTENDED USE/PURPOSE: The acquisition of Kipp & Zonen’s CGR4 and CMP22 sensors is essential to maintaining the accuracy, continuity, and integrity of NOAA’s long-term sea-going flux observations. These sensors are used to capture direct solar radiation and longwave irradiance, which are critical for evaluating the net radiation budget at the ocean surface. Their data directly support NOAA’s mission to monitor and predict atmospheric and oceanic conditions, enabling high-quality observations vital for weather forecasting and marine operations. This is the only known instrument that can meet the Government’s needs, and this notice’s intent is to identify any other products that meet the full

requirements listed below. SPECIAL

REQUIREMENTS/ESSENTIAL SALIENT FEATURES: CMP22 pyranometer Analog Outputs 0 to 21 mV Cable Length 33, 82, 164, 330 ft (10, 25, 50, 100 m) Spectrally Flat Class A (ISO 9060:2018) Digital Outputs N.A. Directional Response ˂ 5 W/m² (up to 80 ° with 1000 W/m² beam) Drying Cartridge and Maintenance Interval External, replacement after approx. 6 months IP Rating IP67 Irradiance Saturation 4000 W/m² (Max.) Material Enclosures Aluminum, anodised Non-linearity ˂ ±0.2% (100 to 1000 W/m²) Non-stability ˂ ±0.5% (change/year) Operating Humidity 0 to 100% Operating Temperature Range -40 to +80 °C Response Time ˂ 1.7 s (63%), ˂ 5 s (95%) Sensitivity 7 to 14 µV/W/m² ˂ ±0.5 % (-20 to +50 °C) Spectral Accuracy 200 to 3600 nm Temperature Correction ˂ ±0.5% (-20 to +50 °C) Weight 1.3 lb (600 g) Zero offset A ˂ ±3 W/m² Zero offset B ˂ ±1 W/m² CGR4 Pyrgeometer Ambient Temperature -40 - +176 °F (-40 - +80 °C) Analog Output Yes Analog Outputs -5 - 5 mV Analogue Ouput Signal -5 - 5 mV Cable Connection 8 pin plug Cable Length 33, 82, or 164 ft (10, 25 or 50 m) Definiton of Measured Values Long-wave atmospheric radiation Digital Outputs N.A. Dimensions Ø 5.9 in (150 mm), H 3 in (76.6 mm) Field-of-View 180 ° Housing Material Anodised aluminum IP Rating IP67 Measuring Range 4.4 - 50 µm Non-linearity ˂ 1 % Non-stability ˂ 1 % Operating Humidity 0 - 100 % Operating Temperature Range -40 - +176 °F (-40 - +80 °C) Power Consumption none Power input none Response Time ˂ 18 s Sensitivity 5 - 15 µV/W/m² Temperature Dependence of Sensitivity ˂ 1% (-4 °F - +122 °F) Temperature Range -40 - +176 °F (-40 - +80 °C) Weight 1.3 lbs (0.6 kg) Zero offset A < 4 W/m² Zero offset B < 2 W/m² DELIVERY SCHEDULE: Deliver by August 30, 2026. The North American Industry Code (NAICS) is 334513 with a size standard of 750 employees. Interested firms shall provide, in writing, a brief narrative (no more than 3 pages in length) and documentation to support your firm’s capability and experience meeting the

requirements herein and include your firm’s name, address,

point of contact, telephone number, UEID Number, CCR CAGE Number, business type and size (i.e., small, large, non-profit, educational, etc.). Any response that does not include this information will not be considered. The Government will review your response to determine if your firm has the experience, knowledge and capability to provide the items as specified above. This request for information does not constitute a commitment, implied or otherwise, that a procurement action will be issued. Nor does this request for information constitute a commitment, implied or otherwise, that any procurement action may be issued for the Government’s