OSI ORG-815-DS User manual

OPTICAL SCIENTIFIC, INC.
ORG
-
815
-
DS USER
GUIDE
1102
-
916
ORG815DS User Guide 190809.docx
USER'S GUIDE
ORG-815-DS
OPTICAL PRECIPITATION SENSOR
Revisi n 08/09/19
OPTICAL SCIENTIFIC INC
2 Metropolitan Ct. Suite 6
Gaithersburg MD 20878 USA
Tel: [phone]
Fax: [phone]
http://opticalscientific.com

OPTICAL SCIENTIFIC, INC.
ORG
-
815
-
DS
USER'S GUIDE
1102-916 2
Rev.
8/12/2019
Revisi n Rec rd
Rev Date
Descripti n f Changes
6/28/00 Changes company name from ScTi to OSI added revision log
7/25/00 Added new mounting bracket details to Sec 2.2 updated TST-700 to
TST-800 and PSB-715 to PSB-815
05/05/10 Re-edit User’s guide to current level.
12/02/10 Make specific for ORG 815-DS
01/14/11 Restore “Q” poll and other edits per customer request
03/07/14 Add erratum notes re: firmware 42S dated 07/19/12
“A” Poll 17 byte data length in Section 4 to be ignored
Remove QwikCollect Software reference
09/08/16 Update cable to include 1102-302-4
03/15/17 Added MODBUS-RTU capability re: firmware 44s dated 03/15/17
and later
05/11/17 Corrected DC wire assignment Fig. 2.5
04/18/18 Add LDM option and Appendix A
05/16/18 Update Tech Support & Customer Service phone numbers
02/25/19 Update Figures 1.1 1.2 and 1.3
08/09/19 Heater status added on byte 20 (4th byte of status code)
Read the entire User=s Guide before proceeding
with installation or maintenance of the ORG!

OPTICAL SCIENTIFIC, INC.
ORG
-
815
-
DS
USER'S GUIDE
1102-916 3
Rev.
8/12/2019
TABLE OF CONTENTS
1 INTRODUCTION TO THE ORG-815-DS OPTICAL PRECIPITATION GAUGE ..................... 6
1.1 The ORG-815-DS Improves Your Ability To Measure Rain And Snow ......................... 6
1.2 Performance Specifications for the ORG-815-DS ........................................................... 8
1.3 Basic Sensor Description .............................................................................................. 10
1.4 Accessories For The ORG ............................................................................................ 12
2 INSTALLATION OF THE ORG-815-DS ................................................................................. 13
2.1 Siting and Installation Guidelines .................................................................................. 13
2.2 Mounting the ORG-815-DS ........................................................................................... 14
2.3 Connecting the ORG Sensor ......................................................................................... 16
2.3.1 Connecting the Digital ORG Sensor Cable 1102-302-3 ............................................ 16
2.3.2 Connecting the Digital ORG Sensor Cable 1102-302-4 ............................................ 18
3 ORG THEORY OF OPERATION ........................................................................................... 20
3.1 Overall System Theory .................................................................................................. 20
4 USER INTERFACE / ORG OPERATION .............................................................................. 22
4.1 RS-232 ORG Interface .................................................................................................. 22
4.1.1 "A" Poll Response ...................................................................................................... 24
4.1.2 "B" Poll Response ...................................................................................................... 25
4.1.3 "C" Poll Response ..................................................................................................... 26
4.1.4 "D" Poll Response ..................................................................................................... 28
4.1.5 "Q" Poll Response ..................................................................................................... 29
4.1.6 "R" "V" & "Z" Poll Responses .................................................................................. 30
4.2 ORG Operation Examples ............................................................................................. 31
4.2.1 Typical ORG-815-DS Output ..................................................................................... 31
5 MODBUS Communication ...................................................................................................... 33
5.1.1 MODBUS RTU Protocol ............................................................................................ 33
6 MAINTENANCE & TROUBLESHOOTING THE ORG-815-DS ............................................. 35
6.1 Routine Maintenance and Quick Check ........................................................................ 35
7 Appendix A - Limited Distance Modem Option ...................................................................... 37
8 TECHNICAL SUPPORT ......................................................................................................... 38
8.1 Before Contacting Technical Support ............................................................................ 38
8.2 Factory Service .............................................................................................................. 38
LIST OF FIGURES
Figure 1.1 OSI ORG-815-DS Series Optical Sensor....................................................................... 7
Figure 1.2 ORG-815-DS Dimensions .............................................................................................. 9
Figure 1.3 ORG-815-DS Major Components ................................................................................ 11
Figure 1.4 PSB Electrical Box ....................................................................................................... 12
Figure 1.5 Limited Distance Modem .............................................................................................. 12
Figure 2.1 Installing Mounting Bracket & U-Bolts .......................................................................... 14
Figure 2.2 Typical ORG Installation............................................................................................... 15
Figure 2.3 Cable 1102-302-3 ......................................................................................................... 17
Figure 2.4 PSB Connections for 1102-302-3 ................................................................................ 17
Figure 2.5 Cable 1102-302-4 ......................................................................................................... 19
Figure 2.6 PSB Connections for 1102-302-4 ................................................................................ 19
Figure 3.1 ORG 815 Sensor Block Diagram ................................................................................. 21
Figure 5.1 ModBus Example Screen ............................................................................................. 33
Figure 5.2 ModBus Master Screen ................................................................................................ 34
Figure 6.1 Comb Test Illustration .................................................................................................. 36
Figure 7.1 Limited Distance Modem .............................................................................................. 37

OPTICAL SCIENTIFIC, INC.
ORG
-
815
-
DS
USER'S GUIDE
1102-916 4
Rev.
8/12/2019
CAUTIONARY NOTES
Note :
Used to call attention to a special feature or procedure which
must be followed for correct operation of the equipment
Caution :
Used to call attention to a concern where damage
to the equipment or injury to personnel may occur
unless certain steps are followed
Warning :
Used to call attention to a concern where serious personal
injury or death may occur unless basic safety
procedures are follow ed
WARRANTY
Optical Scientific warrants its products to be free of defects in workmanship
and material for a period of 12 months from date of shipment. During the
warranty period OSI will repair or replace defective products at its own
expense subject to the following conditions:
1. The Buyer prepays all shipping insurance and associated costs to
return the defective item to OSI. OSI pays return shipping and insurance.
2. The product must not have experienced misuse neglect accident
or have been altered or repaired by the Buyer during the warranty period.
3. This warranty and OSI's obligation are in lieu of all other warranties.
Implied warranties shall not apply.
4. OSI is not liable for consequential or incidental damages labor
performed in conjunction with removal and replacement loss of production or
any other loss incurred because of interruption of service or production of
incorrect or incomplete weather information.
Disclaimer
Optical Scientific Inc. will not be held liable for any accident injury or
damage incurred while installing operating or servicing this equipment; or as
a result of improper installation or operation. Implementation and enforcement
of proper safety procedures is solely the responsibility of the user user
employees or contracted personnel.

OPTICAL SCIENTIFIC, INC.
ORG
-
815
-
DS
USER'S GUIDE
1102-916 5
Rev.
8/12/2019
GLOSSARY
AC Alternating Current
AGC Automatic Gain Control
AWG American Wire Gauge
ASCII American Standard Code For Information Exchange
ASOS Automated Surface Observing System
CR Carriage Return
CTRL Control
CXR Carrier Signal
CW Continuous Wave
DC Direct Current
FAA Federal Aviation Administration
LDM Limited Distance Modem
LED Light Emitting Diode
IR Infrared
MOV Metal Oxide Varistor
NEMA National Electrical Manufacturer's Association
NWS National Weather Service
ORG Optical Rain Gauge
PSB Power Supply Box
PTC Positive Temperature Thermistor
RX Receiver
OSI Optical Scientific Inc.
TX Transmitter
VDC Voltage Direct Current
ENGLISH/METRIC CONVERSION FA
CTORS
1 inch = 25.4 mm 1 mm = 0.039 in
1 foot = 0.305 m 1 meter = 3.28 ft
1 pound = 0.454 kg 1 kilogram = 2.2 lbs
ΕF = 9/5 ΕC + 32 ΕC = 5/9( ΕF – 32)