Model HC2S3 Temperature and Relative Humidity Probe
5
ground, which can affect the accuracy of low-level single-ended voltage
measurements.
Probes are polarity-protected by a keyed connector and diode in the connector
interface provided with the Campbell Scientific cable.
Campbell Scientific offers two filters:
Polyethylene filter: Default filter, protection against fine dust particles, no
water absorption or retention, good response time.
Teflon filter: Recommended for marine environments, slower response
time than the polyethylene filter, ordered separately.
6. Specifications
Features:
•
Well-suited for long-term, unattended applications
•
Accurate and rugged
•
Compatible with the following CRBasic dataloggers: CR200(X)
series, CR6, CR800 series, CR1000, CR3000, CR9000(X)
Operating Limits:
–40 to 100 °C
Storage Temperature:
–50 to 100 °C
Probe Length:
85 mm (3.3 in), 183 mm (7.25 in)
including connector
Probe Diameter:
15 mm (0.6 in)
Probe Weight:
10 g (0.35 oz)
Filter:
Polyethylene, optional Teflon ordered
separately
Power Consumption:
<4.3 mA at 5 V
<2.0 mA at 12 V
Supply Voltage (using CSI cable):
5 to 24 Vdc (12 Vdc recommended)
Start-Up Time:
1.5 s typical (Rotronic specification)
Campbell Scientific recommends:
2 s at 60 °C
3 s at 0 °C
4 s at –40 °C
Maximum Startup Current:
<50 mA during 2 µs
Maximum Cable Length:
300 m (1000 ft) with 12 V power,
3 m (10 ft) with 5 V power
Analog outputs
Offset at 0 V:
±3 mV (maximum)
Deviation from Digital Signal:
< ±1 mV (0.1 °C, 0.1% RH)