CS215-L

Digital Air Temperature and Relative Humidity Sensor
CS215-L

CS215-L

Retired

Digital Air Temperature and Relative Humidity Sensor

No longer available to order

This product is retained for service, documentation, and compatibility information.

Replaced by

  • HygroVue 5

    Digital Temperature and Relative Humidity Sensor

Model:
CS215-L
Item Number:
18007
Warranty:
1 year

Overview

The CS215 is a temperature and relative humidity probe that uses a Swiss-made digital humidity and temperature element that makes accurate and stable measurements. The element is based on Sensirion's CMOSens technology, which has been tested for more than two years in alpine conditions. The CS215 outputs an SDI-12 signal that is measurable by most Campbell Scientific data loggers.

Key Advantages

Competitively Priced; SDI-12 Output
General-purpose temperature and RH probe

Technical Description

The CS215 uses the Sensirion SHT75, a combined relative humidity and temperature element, to provide accurate, stable measurements. The Sensirion SHT75 element is field-replaceable, eliminating the downtime typically required for the recalibration process. The CS215 outputs an SDI-12 signal that's measurable by many Campbell Scientific data loggers.

The CS215 should be housed in a solar radiation shield—typically the 41303-5A. The 41303-5A 6-plate naturally aspirated shield attaches to a mast, crossarm, or tower leg.

Product Notes

requires solar radiation shield for air temp

Benefits

  • Accurate and stable measurements
  • Field changeable element allows on-site recalibration
  • Each sensor element is individually calibrated so no further adjustment of the probe is required
  • Low power consumption
  • Digital SDI-12 output
  • Wide operating range

Specifications

Sensing Element
Sensirion SHT75
Measurement Description
Temperature, relative humidity
Signal Type/Output
SDI-12
Communication Standard
SDI-12 V1.3

(responds to a subset of commands)

Housing Material
Anodized aluminum
Housing Classification
IP65

(NEMA 4)

Sensor Protection
Outer glass-filled polypropylene cap. Inner expanded PTFE filter.

Filter material has a porosity of 64% and a pore size of < 3μm.

Supply Voltage
The supply voltage is typically powered by the data logger's 12 V supply.
7 to 28 Vdc

(for serial numbers E13405 and newer)

6 to 18 Vdc

(for older models)

Typical Current Drain
120 μA

(quiescent)

1.7 mA

(measurement takes 0.7 s)

EMC Compliance
Tested and conforms to IEC61326:2002.
Operating Temperature Range
-40° to +70°C
Field Replaceable Chip or Recalibrate
Field-replaceable chip
Diameter
1.2 cm

(0.5 in.) at sensor tip

1.8 cm

(0.7 in.) at cable end

Length
18.0 cm

(7.1 in.) including strain relief

Weight
150 g

(5.3 oz) with 3.05 m (10 ft) cable

Relative Humidity

Measurement Range
0 to 100% RH

(-20° to +60°C)

Output Resolution
0.03% RH
Accuracy
±2%

(10% to 90% range) at 25°C

±4%

(0% to 100% range) at 25°C

Short-Term Hysteresis
< 1% RH
Temperature Dependence
Better than ±2%

(-20° to +60°C)

Typical Stability
±1.0% per year
Response Time with Filter
< 20 s

(63% response time in still air)

Calibration Traceability
NIST and NPL standards

Air Temperature

Measurement Range
-40° to +70°C
Output Resolution
0.01°C
Accuracy
±0.3°C

(at 25°C)

±0.4°C

(5° to 40°C)

±0.9°C

(-40° to +70°C)

Response Time with Filter
< 120 s

(63% response time in air moving at 1 m s-1)

Similar Products

(2)

Compatibility

Sensor Mounts

When exposed to sunlight, the CS215 must be housed in a 41303-5A radiation shield. To attach the 41303-5A to a CM202, CM204, or CM206 crossarm, place the 41303-5A’s U-bolt in the bottom holes. To attach the radiation shield directly to a tripod mast, tower mast, or tower leg, place the U-bolt in the side holes.

The CS215-L Temperature and RH sensor can also be housed in the 43502 if a special adapter from R. M. Young (R. M. Young pn 43537) is used.

Related Resources

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Services Available

Repair
No
Calibration
No
Free Support
Yes