Technical Specification Sheet - ETF Hygrometers.pdf
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- ETF Hygrometers
- Solicitation number
- FA9101_ETF_Hygrometers
About this file
This is a Technical Specifications Sheet for the procurement of commercially available dew point hygrometers. The Government requires nine (9) units of equipment meeting detailed technical specifications.
The dew point hygrometers must feature a multi-stage chilled mirror sensor technology capable of drift-free, continuous dew/frost point temperature measurement with a range of −70 °C to +95 °C and measurement accuracy of ±0.2 °C or better across the full range. Equipment must be configured as a 19-inch rack/panel mountable console (approximately 19" W × 7" H) with remote-mounted sensor capability supporting distances up to 250 feet. The units require minimum 95 °C cooling depression capability (3-stage thermoelectric cooling equivalent), standard chromium/chrome mirror surfaces, and an Automatic Balance Cycle (ABC) or equivalent optical auto-standardization feature for contamination compensation. Additional requirements include support for Programmable and Manual Balance Cycles, multiple user-configurable analog outputs (4–20 mA and 0–5 Vdc ranges), dedicated bi-directional RS-232 serial interface, minimum two programmable form C SPDT dry-contact alarm relays, and universal power supply (90–230 VAC ±10%, 50/60 Hz). Equipment must ship with NIST-traceable calibration certificates from ISO/IEC 17025 accredited laboratories, no auxiliary probes are required, and a minimum one-year warranty on all parts, sensors, and labor is mandated. The specification can be satisfied by Edgetech Instruments part number DM-PMDM-X3SF-STD-RC(250FT.)-AFSP or an equivalent "or equal" commercially available product.
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Technical Specifications Sheet
The Government requires commercially available equipment meeting the specifications provided below.
Item – Dew Point Hygrometer Quantity: 9
Specification Required Value / Performance
Measurement Technology Primary method, multi-stage chilled mirror sensor providing drift-free, continuous dew/frost point temperature measurement.
Chassis / Enclosure Type 19–inch rack/panel mountable console configuration, standard rack dimensions (approx. 19” W × 7” H).
Sensor Installation Remote-mounted configuration supporting sensor-to-console distances up to 250 feet (76 meters).
Mirror Surface Material Standard chromium/chrome mirror surface.
Cooling Depression Capability
Minimum 95 °C cooling depression capability (equivalent to 3-stage thermoelectric cooling performance).
Dew/Frost Point Range Able to cover a dew/frost point range of −70 °C to +95 °C (at nominal ambient temperature).
Measurement Accuracy ±0.2 °C (±0.36 °F) or better dew/frost point accuracy across the full range.
Contamination Compensation
Must include an Automatic Balance Cycle (ABC) or equivalent optical auto-standardization feature to correct for mirror contaminants.
Operational Modes Supports Programmable Balance Cycles (PABC) and Manual Balance Cycles (MABC).
Calibration Standards Ships with a NIST-traceable certificate of calibration performed by an ISO/IEC 17025 accredited laboratory.
Analog Outputs Multiple user-configurable/scalable analog outputs, including 4–20 mA and 0–5 Vdc ranges.
Specification Required Value / Performance
Digital Communication Dedicated bi-directional RS-232 serial interface for data acquisition and remote programming.
Alarm Relays Minimum two (2) programmable, form C SPDT dry-contact relays rated for process alarms.
Power Requirements Universal power supply accepting 90 to 230 VAC (±10%), 50/60 Hz.
Auxiliary Probes Required None (No ambient Air Temperature or active inline pressure sensors required).
Warranty Support Minimum one (1) year warranty on all parts, sensors, and labor.
NOTE: The requirement can be met by manufacturer Edgetech Instruments, part number DM-PMDM-X3SF-STD-RC(250FT.)-AFSP, or an “or equal” commercially available product.
Technical Specifications Sheet
File details come from the government source that posted it. Updated .