General, Specifications, Hmp50 temperature and relative humidity probe – Campbell Scientific HMP50 Temperature and Relative Humidity Sensor User Manual

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HMP50 Temperature and Relative
Humidity Probe

1. General

The HMP50 Temperature and Relative Humidity probe contains a Platinum
Resistance Temperature detector (PRT) and a Vaisala INTERCAP® capacitive
relative humidity sensor.

The -L option on the model HMP50 Temperature and Relative Humidity probe
(HMP50-L) indicates that the cable length is user specified. Lead length is
specified when the sensor is ordered. Table 1 gives the recommended lead
length. This manual refers to the sensor as the HMP50.

TABLE 1. Recommended Lead Lengths

2 m Height

Atop a tripod or tower via a 2 ft crossarm such as the CM202

Mast/Leg CM202 CM6

CM10

CM110

CM115

CM120

UT10

UT20

UT30

9' 11'

11'

14'

19'

24'

14'

24'

37'

Note: Add two feet to the cable length if you are mounting the enclosure on the leg base of a light-weight tripod.

2. Specifications

Operating Temperature: -40

°C to +60°C

Storage Temperature: -40

°C to +80°C

Probe Length: 7.1 cm (2.8 in.)

Probe Body Diameter: 1.2 cm (0.47 in.)

Filter: 0.2

μm Teflon membrane

Filter Diameter: 1.2 cm (0.47 in.)

Housing Material: chrome-coated aluminum and

chrome-coated ABS plastic

Power Consumption: <2 mA

Supply Voltage: 7 to 28 VDC

Settling Time after power is switched on: 1 second