CS616-LC Water Content Reflectometer for ET or MetData1

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Designed for Weather Stations

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Overview

The CS616-LC is a version of the CS616 that has a cable terminated in a connector rather than the standard pigtails. The connector can be attached to the ET107, ET106, or MetData1 weather stations.

The CS616-LC measures the volumetric water content from 0% to saturation. It uses time-domain measurement methods, but no reflectometer (cable tester) such as the TDR100 is required. The probe rods can be inserted from the surface or the probe can be buried at any orientation to the surface. It is rugged and designed for long-term, unattended use.

Compatible with most Campbell Scientific dataloggers
High accuracy and high precision
Fast response time
Fast, easy connection to weather stations

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CS616 30 cm Water Content Reflectometer

Detailed Description

The CS616-LC is a version of the CS616 that has a cable terminated in a connector that attaches to the ET107, ET106, or MetData1 weather stations.

The CS616-LC measures the volumetric water content from 0% to saturation. It uses time-domain measurement methods. The probe rods can be inserted from the surface or the probe can be buried at any orientation to the surface. It is rugged, and is designed for long-term, unattended use.

Specifications

Probe-to-Probe Variability	±0.5% VWC (in dry soil) ±1.5% VWC (in typical saturated soil)
Output	±0.7 V square wave with frequency dependent on water content
Precision	0.05% VWC
Accuracy	±2.5% VWC using standard calibration with bulk electrical conductivity of ≤ 0.5 dS m^-1, bulk density of ≤ 1.55 g cm^-3, and measurement range of 0 to 50% VWC
Current Drain	65 mA @ 12 Vdc (when enabled) 45 μA (quiescent typical)
Power Supply Voltage	5 Vdc (minimum) 18 Vdc (maximum)
Enable Voltage	4 Vdc (minimum) 18 Vdc (maximum)
Resolution	0.1% VWC
Electromagnetic	CE compliant Meets EN61326 requirements for protection against electrostatic discharge.
Rod Spacing	32 mm (1.3 in.)
Rod Diameter	3.2 mm (0.13 in.)
Rod Length	300 mm (11.8 in.)
Probe Head Dimensions	85 x 63 x 18 mm (3.3 x 2.5 x 0.7 in.)
Weight	280 g (9.9 oz) without cable
Cable Weight	35 g per m (0.38 oz per ft)

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Miscellaneous

Product	Compatible	Note
ET106 (retired)
ET107 (retired)
METDATA1 (retired)

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CS616-LC Water Content Reflectometer

Compliance

CS616/CS625 EU Declaration of Conformity

Frequently Asked Questions

Number of FAQs related to CS616-LC: 3

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What are the different cable length choices available for Campbell Scientific sensors?
Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:
- An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
- An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.
If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.
- –ET models terminate with the connector for an ET107 weather station.
- –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
- –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
- –PW models terminate with the connector for a PWENC or pre-wired system.
Where are the available cable termination options listed for a particular sensor?
Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:
- Model number
- Cable Termination Options list
If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

Note: As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model.
What are the different cable termination options available for Campbell Scientific sensors?
Many Campbell Scientific sensors are available with different cable termination options. These options include the following:
- The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a data logger.
- In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
- In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
- In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
- In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.
Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact Campbell Scientific for assistance.

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