3.12.1. PIR

3.12.1.1. Introduction

Precision Infrared Radiometer (PIR) is a Pyrgeometer manufactured by Eppley. It measures longwave irradiance. One has been deployed at KSS45W and IMU.

3.12.1.2. Manufacturer and Model

Model	Brand	Type
PIR	Eppley	Infrared Radiometer

3.12.1.3. Output definitions

Ouput definition ID	File Identifier	Level Number	QAQC notes	File time resolution
PIR	PIR_%SITE	0	No_QAQC	15min
PIR	PIR_%SITE	1	Thresholds	15min

3.12.1.4. Processing code

Code used to process raw data: https://github.com/Urban-Meteorology-Reading/Operations-Radiometers

3.12.1.5. Variables measured by instrument

Table 3.10 Variables measured - sorted alphabetically

Variable ID	Full Name	Unit	Lower Threshold	Upper Threshold	Files present (Output definition ID,Level No,Time resolution)
FLAG	Status flag	N/A			PIR,1,15min
Ldn	incoming_longwave_radiation	W.m-2	100.0	600.0	PIR,0,15min PIR,1,15min
sd_Ldn	standard_deviation_Ldn	W.m-2			PIR,0,15min PIR,1,15min

3.12.1.6. Serials

Serial	Suffix
29757F3	A

3.12.1.7. Deployments

3.12.1.7.1. Serial number: 29757F3

Site ID	Start date	End date
KSS45W	2012-02-27 00:00	2016-04-14 00:00
IMU	2016-05-04 00:00	2020-11-04 00:00

3.12.1.8. Photos

Fig. 3.23 At KSS45W. Unknowm date between 2012-02-27 and 2016-04-14.

Fig. 3.24 At IMU, indicated by arrow, 08-01-2020.

3.12.1.9. Supplementary information

Link	Title	Description
PIR specification	PIR specification	From Eppley.
PIR manual	PIR manual	Manual from Campbell Scientific.

3.12.1.10. Data acquisition

Data can be requested from Prof. Sue Grimmond (c.s.grimmond@reading.ac.uk).

Tip

1. Stuck? the user guide is a useful place to start.

2. Please report issues at GitHub Issues. Go from the page with the problem - an automatic link will be inserted. Thanks.