Sea-Bird Electronics SBE 38 Manual de usuario descargar pdf (Pagina 17)

Section 2: Description of MicroTSG SBE 45

Specifications

Temperature

(°C)

Conductivity

(S/m)

Salinity

(PSU),

typical

Measurement

Range

-5 to +35

0 to 7

(0 to 70 mS/cm)

Initial Accuracy

0.002

0.0003

(0.003 mS/cm)

0.005

Typical Stability

(per month)

0.0002

0.0003

(0.003 mS/cm)

0.003

Resolution

0.0001

0.00001

(0.0001 mS/cm)

0.0002

Sensor

Calibration

Range

+1 to +32

0 to 6; physical

calibration over the

range 2.6 to 6 S/m,

plus zero

conductivity (air)

Counter

Time-Base

Quartz TCXO, ±2 ppm per year aging;

±5 ppm vs. temperature (-5 to +30 °C)

Input Power

8 - 30 VDC

Quiescent (sleep) Current: 10 microamps

Operating Current: 34 milliamps at 8 VDC

30 milliamps at 12-30 VDC

Materials

PVC housing

Recommended

Flow Rate

10 to 30 milliliters/second

(0.16 to 0.48 gallons/minute)

Maximum Safe

Operating

Pressure

34.5 decibars (50 psi)

Weight

4.6 kg (10.2 lbs)

Notes:

Temperature specifications above are for MicroTSG’s temperature sensor.

For optional remote temperature sensor (SBE 38), which can be integrated

with optional 90402 Interface Box -

Measurement range: -5 to +35 °C Initial accuracy: 0.001 °C

Resolution: 0.0003 °C Calibration: -1 to +32 °C

Typical stability: 0.001 °C in 6 months, certified

Resolution

Typical RMS noise with fixed resistors on temperature and conductivity inputs:

NCycles *

Temperature

(°C)

Conductivity

(S/m)

Salinity

(psu)

Sound

Velocity

(m/sec)

1 0.000190 0.000014 0.00027 0.00066

2 0.000170 0.000010 0.00016 0.00057

4 0.000150 0.000005 0.00015 0.00055

8 0.000087 0.000005 0.00009 0.00033

16 0.000078 0.000004 0.00007 0.00025

* NCycles = number of measurements to average per sample.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 103 104

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Sea-Bird Electronics SBE 38 Manual de usuario Pagina 17

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