43502

Compact Aspirated Shield
43502

43502

Orderable

Compact Aspirated Shield

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Model:
43502
Item Number:
45103
Warranty:
1 year

Overview

The compact, easily mountable 43502 fan-aspirated shield from R. M. Young uses a continuous blower to draw ambient air over a 43347 RTD Temperature Probe, while protecting the probe from the interference of solar radiation. As a result, you are provided with more accurate temperature and humidity measurements. Although the 43502 shield is usually used with the 43347 probe, you can use it to accommodate temperature and humidity sensors up to 0.9 in. in diameter. The mounting bracket included on the shield attaches to posts or masts up to 2 in. in diameter.

Key Advantages

Provides More Accurate Measurements
Shades, draws ambient air past sensor

Technical Description

The 43502 fan-aspirated radiation shield is typically used with the 43347 RTD Temperature Probe to provide delta temperature measurements for air-quality applications. The 43502 employs concentric downward-facing intake tubes and a small canopy shade to isolate the temperature probe from direct and indirect radiation.

The 43347 probe mounts vertically in the center of the intake tubes. A brushless 12 Vdc blower motor pulls ambient air into the shield and across the probe to reduce radiation errors. This allows temperature to be measured with an RMS error of less than ±0.2°C. The blower operates off a 115 Vac to 12 Vdc transformer that is included with the shield.

Product Notes

requires ac power

Benefits

  • Reduces radiation errors by shading and drawing ambient air past the sensor for more accurate measurements

Specifications

Operating Temperature Range
-50°C to +60°C
Aspiration Rate
5 to 11 m s-1

(16 to 36 fps) depending on sensor size

Ambient Temperature
< 0.2°C

(0.4°F) RMS at 1000 W/m2 intensity

Delta T
< 0.05°C

(0.1°F) RMS with like shields equally exposed

Power Requirements
12 to 14 Vdc

@ 500 mA (for blower)

Mounting
V-Block and U-Bolt

for vertical pipe with 2.5 to 5.0 cm (1.0 to 2.0 in.) diameter

Diameter
20 cm

(8 in.)

Length
33 cm

(13 in.)

Weight
1.1 kg

(2.5 lb)

Compatibility

Sensors

The 43502 is intended to be used with the 43347 RTD probe, but other temperature sensors may also fit inside of this shield. The CS215 Temperature and RH sensor can be housed in the 43502 if a special adapter from RM Young (RM Young pn. 43537) is used.

Mounting

The 43502 mounting bracket has a U-bolt configured for attaching the shield to a tripod mast, tower leg, or vertical pipe with up to 2” OD. By moving the U-bolt to the other set of holes, the bracket can be attached to a CM202, CM204, or CM206 crossarm. Each of these crossarms includes the CM210 Mounting Kit for attaching the crossarm to a tripod mast or tower leg. For our towers (e.g., UT20, UT30), an additional CM210 Crossarm Mounting Kit can be ordered for attaching the crossarm to two tower legs for additional stability.

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