PSL OTT HYDROMET INSTRUMENTS & ACCESSORIES

Notice Number: 145035250016IV

Notice Type: Sources Sought Synopsis

Title: PSL OTT Hydromet Instruments and Accessories

Response Date: August 4, 2025

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)
Classification
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 September 30, 2025.

The North American Industry Classification 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 requirements.
No entitlement to payment of direct or indirect costs or charges by the Government will arise because of
the submission of contractor’s information. The Government shall not be liable for or suffer any
consequential damages for proprietary information not properly identified. Proprietary information will be
safeguarded in accordance with the applicable Government regulations.

All contractors doing business with the Government are required to be registered and active with the
System for Award Management (SAM) website.

NOTE: THIS SYNOPSIS IS NOT CONSIDERED A REQUEST FOR PROPOSAL BUT A REQUEST
FOR INFORMATION ONLY. No solicitation document is available. No contract will be awarded based
on responses received to this notice.