Kipp&Zonen BSRN Scientific Solar Monitoring System - Manual (Page 164)

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Specification Type 1 Type 2 Type 3
Analog-to-digital
converter type Integrating Integrating, Sigm a-
delta or Successive
approxim ation Successive
approxim ation, Flash
converters
Resolution (bits) 16 - 28 16 - 24 12 - 16
Max. Voltage
Resolution (:V) <0.1 < 1 20 (~ 2 with averaging)
One-year relative
uncertainty (:V) for 10
m V reading ±0.2 ±10 ±20 (averaging of 100
m easurem ents)
Sam pling Rate per
Second <30 at 1 PLC 40 100 K
Power line Noise
Filtering Yes No No
Autozero Capability Zero Som e No
Internal Program m ing Yes Yes No
Internal Storage Lim ited Yes No
Direct Resistance &
Current Measurem ent Yes Som e No
Cost High Medium -High Low
Table F 1. Typical specifications for the three different types of data acquisition system s available for the
m easurem ents of basic BSRN variables.
F 2. Data Acquisition Suppliers
A partial listing of data acquisition system m anufacturers and the type of system (s) produced is provided
below. The list is in alphabetical order and is only provided to aid users in obtaining inform ation before
selecting a system . Users m ust also be aware that m any system s require additional sofrware and all
require regular calibration to operate effectively.
Agilent Technologies
395 Page Mill Rd.
P.O. Box #10395
Palo Alto, CA 94303
USA
http://we.hom e.agilent.com /
Type 1
American Advantech Corporation
No. 1, Alley 20, Lane 26,
Rueiguang Road, Neihu District,
Taipei 114, Taiwan, R. O. C.
http://www.advantech.com /
Type 3
Campbell Scientific, Inc.
P.O. Box 551
Logan, UT 84321
USA
http://www.csi.com /
Type 2
CyberReserach, Inc.
P.O. Box 9565
New Haven, CT 06535-0565
http://www.cyberresearch.com /
Type 3