Sensing Element

SHT35 modified by Campbell Scientific

Communication Standard

SDI-12 V1.4 (responds to a subset of commands)

Supply Voltage

7 to 28 Vdc

EMC Compliance

Tested and conforms to IEC61326:2013.

Standard Operating Temperature Range

-40° to +70°C

Main Housing Material

UV stable, white PET-P

Electronics Sealing Classification

IP67

Sensor Protection

Outer glass-filled polypropylene cap fitted with a stainless-steel mesh dust filter with nominal pore size of < 30 µm. The sensor element has a PTFE protective film with a filtration efficiency of > 99.99% for particles of 200 nm or larger size.

Sensor Connector

M12, male, 4-pole, A-coded

Cable

Polyurethane sheathed, screened cable, nominal diameter 4.8 mm (0.19 in.)

Field-Replaceable Chip or Recalibrate

Field-replaceable chip

Sensor Cap Diameter

12.5 mm (0.5 in.)

Body Diameter at Connector

18 mm (0.7 in.)

Length

180 mm (7.1 in.) without cable fitted

Sensor Body Weight

50 g (1.8 oz)

Weight

250 g (8.8 oz) with 5 m (16.4 ft) cable

相对湿度

Measurement Range

0 to 100% RH

Accuracy

· -NOTE- The accuracy figures quoted are the 95% confidence limits relative to factory standards.

· ±1.5% (at 25°C, over the range 0 to 80% RH)

· ±2% (at 25°C, over the range 80 to 100% RH)

Short-Term Hysteresis

< ±1% RH

Additional Errors at Other Temperatures

< ±1% RH (over -40° to +60°C)

Long-Term Stability

±0.5% per year (maximum drift in clean air conditions)

Reported Resolution

0.001% RH

Repeatability

0.05% RH (3σ noise level)

Response Time with Filter

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

空气温度

Measurement Range

-40°C to +70°C

-NOTE-

The accuracy figures quoted are the 95% confidence limits relative to factory standards.

Accuracy

· ±0.2°C (over the range -40 to +70°C)

· ±0.1°C (over the range 20 to 60°C)

Long-Term Drift

< 0.03°C per year

Reported Resolution

0.001°C

Repeatability

0.04°C (3σ noise level)

Response Time with Filter

< 130 s (63% response time in air moving at 1 m/s)

Calibration Traceability

NIST and NPL standards