DataLoggerSpec (2).doc
DOC document 25 KB Posted
- Attached to
- Water Quality Multiprobe Datalogger Instruments
- Solicitation number
- RFQ - 06A - 08032800000000000673
- Issued by
- Kennebec County, Maine
About this file
This specification document details equipment requirements for a Water Quality Multiprobe Datalogger Instruments procurement for the State of Maine. The agency seeks two multiprobe/datalogger instruments capable of long-term, unattended water quality monitoring. Each datalogger must include comprehensive sensor packages for temperature (range -5°C to 50°C, accuracy ±0.1°C), optical dissolved oxygen (luminescent sensor, accuracy ±0.1 mg/l for 0-20 mg/l range, drift <1% per year), pH measurement with separate reference and reading electrodes (±0.2 pH units accuracy), four-electrode specific conductance (1% accuracy), and depth measurement 0-25 meters (0.2% accuracy range with barometric pressure capability). The instruments must support internal memory storage of at least two months of data at 15-minute intervals or up to 80 MB capacity, feature diagnostic LED indicators, include one 5-meter and one 30-meter underwater communication cable, possess sealed waterproof connections, and include RS-232 interfaces with calibration cups, weighted sensor guards, detachable cable-lock systems, and bail assemblies. Power requirements include USB connectivity with download cables and internal battery packs for unattended operation.
Each datalogger package includes an integrated handheld computer featuring a crushproof and waterproof case with unconditional lifetime guarantee, integrated GPS, Pocket PC platform, 1 GB data expansion capacity, color display with 80 MB or greater memory, data averaging capability, and a 3.5-inch transflective screen. All equipment must include appropriate software, rechargeable battery packs, and supporting accessories for complete field deployment and data collection functionality.
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| File | Type | Posted |
|---|---|---|
| Solicitation_terms.doc | DOC document |
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Text version
Two Water Quality Multiprobe/Datalogger Instruments. Each Datalogger needs to be capable of long term, unattended monitoring. Datalogger should be equipped with the following instrumentation/capabilities;
· All Dataloggers shall be supplied with download cables and must be able to connect via USB and be powered by USB.
· Ports capable of supporting the water quality sensors requested below and have the ability to add parameter sensors at a future time.
· Temperature Sensor - The Temperature Sensor shall have a range of -5 degrees C to 50 degrees C with an accuracy of ± 0.1 Degrees C.
· Optical Dissolved Oxygen Sensor - The Dissolved Oxygen Sensor shall be a luminescent oxygen sensor with an accuracy of ± 0.1 mg/l for readings from 0 – 20 mg/l. The optical dissolved oxygen sensor shall not require replaceable caps or membranes and have a drift of < than 1% per year.
· pH Sensor - The pH measurement system shall have separate reference and reading electrodes. The reference electrode shall be able to be refilled with pH electrolyte and have a replaceable flowing junction. The sensor shall be calibrated using two or three point calibration method with an accuracy of ± 0.2 pH units.
· Conductivity, 4 electrode - The Specific Conductance sensor shall be a graphite sensor with an accuracy of ± 1% of the reading.
· Depth Sensor (0-25 meters) - The Depth sensor shall be of range 0 – 25 meters with accuracy of 0.2% of range and be capable of measuring Barometric Pressure in mmHg for DO calibration.
· Internal memory capable of storing at least two months of data collecting at 15 minute intervals in the multiprobe or a 1 second interval within the display up to 80 MB
· Dataloggers shall have diagnostic LED’s to confirm connection
· Underwater Communication Cables (One 5 meter cable, One 30 meter cable)
· All connections on the Datalogger shall be sealed and waterproof
· RS-232 Interface
· Calibration and storage cups
· Weighted Sensor Guard
· Detatachable Cable-Lock system
· Bail Assembly.
· Internal Battery Pack for unattended monitoring.
· Integrated Handheld Computer w/ following specifications/functionality;
· Crushproof and waterproof case covered by unconditional lifetime guarantee
· Integrated GPS
· Pocket PC Platform
· 1 GB data expansion capacity
· Color Display
· Data averaging capable
· Display must have 80MB of memory or greater be equipped with all software, rechargeable battery pack and a 3.5” transflective screen
File details come from the government source that posted it. Updated .