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Digital ThermArray System 

Installation Guide 

 

 

EPM0036 B  

RST Instruments Ltd. 

Page 5 

 

1

 

I

NTRODUCTION

 

RST’s ThermArray System provides precise thermal gradient information for 

geotechnical, geothermal, and marine applications. The system consists of 

numerous digital thermal data acquisition nodes distributed along one or more 

linear cable segments, typically spaced at uniform intervals. 

 

F

IGURE 

1-1   

T

HERM

A

RRAY 

C

ONNECTED TO THE 

U

LTRA 

R

UGGED 

F

IELD 

PC

2

 

1.1

 

T

HERM

A

RRAY 

C

OMPONENTS

 

The ThermArray system consists of multiple components.   

 

ThermArray Nodes: Each node is an individually addressed and individually 

calibrated digital temperature sensor which is moulded directly onto the 

ThermArray string. 

 

ThermArray String: The ThermArray string is a waterproof, low-temperature 

cable which provides power and digital data access to the ThermArray 

nodes. It includes waterblock filling and is composed of a high-strength, 

anti-stretch Kevlar® for precise and durable positioning. 

Summary of Contents for Digital ThermArray System

Page 1: ...EPM0036 B Digital ThermArray System Installation Guide...

Page 2: ...y Copyright 2015 RST Instruments Ltd All rights reserved Product Digital ThermArray System and RS485 Adaptor Document title Digital ThermArray System Installation Guide Document number EPM0036 Revisio...

Page 3: ...Associated Products 6 2 INSTALLATION 6 3 RS485 ADAPTOR 6 3 1 Adaptor Installation 7 4 RS485 COMMANDS 8 4 1 TTT Command 8 4 2 TRT Command 8 4 3 GTT Command 9 4 4 MODE 9 4 5 BAUD 9 5 SERVICE AND REPAIR...

Page 4: ...gure 3 1 RS232 and RS485 Terminal Connections 6 LIST OF TABLES Table 3 1 RS232 Terminal Connections for Logger Connection 7 Table 3 2 RS232 Terminal Connections for Computer Connection 7 Table 3 3 RS4...

Page 5: ...ls FIGURE 1 1 THERMARRAY CONNECTED TO THE ULTRA RUGGED FIELD PC2 1 1 THERMARRAY COMPONENTS The ThermArray system consists of multiple components ThermArray Nodes Each node is an individually addressed...

Page 6: ...Take care to prevent damage to the ThermArray string and nodes when installing in harsh site conditions or when in contact with materials such as soil and rocks A weight or rope may be attached to the...

Page 7: ...Description SW12V 1 Red Power 7 12 V C2 C4 C6 C8 2 Green RS232 Rx C1 C3 C5 C7 3 White RS232 Tx G 4 Black Ground RS232 9 pin D Sub pin 5 Power Ground TABLE 3 2 RS232 TERMINAL CONNECTIONS FOR COMPUTER C...

Page 8: ...y node or a new reading is taken TTT DeviceAddress CR Entered command TTT DeviceAddress CR Returned string Where TTT Command to be processed DeviceAddress Address of ThermArray node in decimal format...

Page 9: ...node Resistance Resistance of thermistor CR Carriage return hex 0x0D command termination character 4 4 MODE The MODE command is a special command used to switch the functionality of the adapter For T...

Page 10: ...e EPM0036 B RST Instruments Ltd Page 10 5 SERVICE AND REPAIR The product contains no user serviceable parts Contact RST for product service not covered in this manual Refer to the inside title page of...

Page 11: ...Constant 20 seconds Power Supply Voltage 7 13V DC Current per Node 0 8 mA Acquisition Time 0 5 seconds Node Length 30 mm Node Diameter 15 mm TABLE A 2 THERMARRAY CABLE SPECIFICATIONS Item Description...

Page 12: ...Digital ThermArray System Installation Guide EPM0036 B RST Instruments Ltd Page B 1 Appendix B THERMARRAY WIRING DEMO TO CR800 CR1000 LOGGERS...

Page 13: ...Digital ThermArray System Installation Guide EPM0036 B RST Instruments Ltd Page C 1 Appendix C SAMPLE CR800 CR1000 PROGRAM...

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