If you want to be able to collect your data from a ShapeArray (SAA) remotely, you will need to install a data acquisition system. Measurand's standard ShapeArray Data Acquisition Systems (DAS) contain the following parts.


  • Logger Enclosure (NEMA 4 rated)
  • SAA232
  • Campbell Scientific CR300 data logger
  • SAA232-PC Cable
  • Logger-PC Cable
  • Charge regulator
  • Miscellaneous wiring and back panel
  • 50 W solar panel and mounting bracket
  • Logger Enclosure (NEMA 4 rated)
  • Battery Enclosure (NEMA 3R rated)
  • SAA232-5
  • Campbell Scientific CR800 data logger
  • SAA232-PC Cable
  • Logger-PC Cable
  • Charge regulator
  • Miscellaneous wiring and back panel
  • 50 W solar panel and mounting bracket

ShapeArray Data Acquisition Systems contain a Campbell Scientific CR series data logger, one or more SAA232(-5) interface modules, and a charge regulator for solar or other source of power. These components are housed in a NEMA 4 rated enclosure referred to as the Logger Enclosure. 


The logger and instruments are powered using a battery. In DAS-1 data acquisition systems, the battery is housed in the Logger Enclosure. In DAS-5 data acquisition systems, the battery housed in a separate, NEMA 3R rated enclosure that is referred to as the Battery Enclosure. For both types of data acquisition systems, the battery is charged using a solar panel and regulator. 

NOTE: The mounting pole used for installing the DAS is not included and must be sourced locally. Measurand recommends a 1.5" to 2" diameter (trade dimension) galvanized steel pipe (max OD of 64 mm) that is long enough to stick up approximately 5' to 6.5' (1.5 m to 2 m) once installed.

NOTE: Batteries must also be locally sourced and are not included with a DAS. Measurand recommends a 35 AHr battery for a DAS without a modem and a 75 AHr battery for a DAS with a modem. The following specifications are also recommended:

  • 12 V
  • Sealed Absorbed Glass Mat (AGM)
  • Non-Spillable
  • Deep Cycle

This guide will show you how to properly wire a ShapeArray Data Acquisition System.


Figure 1: A Measurand ShapeArray Data Acquisition System (DAS)

Step 1 - Remove Logger Enclosure Knockout for ShapeArray Cable 


Figure 2: The main enclosure

The Logger Enclosure (shown in Figure 2 above) will need to have a knockout removed from the bottom (shown in Figure 3 below) for cabling from the ShapeArray. 


Figure 3: A knockout in the Logger Enclosure needs to be removed for the ShapeArray cable

Push the knockout in by applying pressure with a screwdriver from outside of the enclosure, as shown in Figure 4 below.


Figure 4: Remove the knockout by applying pressure with a screwdriver from outside of the enclosure 

Step 2 - Insert Cable Gland and Connect ShapeArray to SAA232  

From the outside of the enclosure, insert the cable gland and secure it with a locknut on the inside.  Remove the Phoenix connector from the ShapeArray cable and thread it into the Logger Enclosure through the cable gland, as shown in Figure 5 below.



Figure 5: Cable gland inserted into Logger Enclosure and secured with locknut, with ShapeArray cable threaded in

Wire the Phoenix connector to the ShapeArray cable and plug it into the SAA232 (or SAA232-5), as shown in Figure 6 below.  

Note: If more than one ShapeArray is to be installed, make sure to connect the ShapeArray serial numbers to the correct SAA232 or SAA232-5 port as defined in your logger program. 


Figure 6: Plugging the wired Phoenix connector into the SAA232

The proper wiring for a 5-pin Phoenix connector is shown in Figure 7.

Figure 7: Proper wiring for the 5-pin Phoenix connector

Step 3 - Remove Knockouts in Battery Enclosure (DAS-5 Only)  

If you have an DAS-5, there is a separate enclosure for the battery. You will need to remove two knockouts from the bottom of the Battery Enclosure. Into one of the knockouts, connect the solar panel cable with the gland that is pre-installed and secure it with a locknut. In the other knockout, connect the non-metallic conduit from the Logger Enclosure, as shown in Figure 8 below.


Figure 8: Battery Enclosure with solar panel cable and non-metallic conduit attached

Step 4 - Insert and Connect Battery in Battery Enclosure  

Insert the battery into the enclosure, as shown in Figure 9 below.


Figure 9: The Battery Enclosure prior to installing the battery

Connect the wires labeled "+Batt" and "-Batt" to the battery terminals, as shown in Figure 10 below. 

  • Red wire with 10A fuse (+Batt) to the positive (+) terminal 
  • Black wire (-Batt) to the negative (-) terminal.


Figure 10: Connecting the battery cables

Step 5 - Connect the Solar Panel and Data Logger Wires  

Connect the 4-pin connector pair for the solar panel, as shown in Figure 11 below.


Figure 11: Connecting 4-pin pair for the solar panel

Connect the 2-pin connector pair for the data logger (load), as shown in Figure 12 below.


Figure 12: Connecting the 2-pin pair for the data logger

Step 6 - Ensure the Data Logger is Powered and Properly Connected to the SAA232(-5)  

In the Logger Enclosure, ensure that the 2-pin power connector is plugged into the data logger, as shown in Figure 13 below.


Figure 13: Connecting the data logger 2-pin power connector

You must also ensure that the wiring between the data logger and the SAA232 or SAA232-5 is correct, as shown in Figure 14 below.

  • White wire: SAA232(-5) transmit (Tx) connects to data logger COM port receive (Rx) 
  • Blue wire: SAA232(-5) receive (Rx) connects to data logger COM port transmit (Tx ) 
  • Red wire: SAA232(-5) 12 V to 12 V power supply 
  • Black wire: SAA232(-5) ground (G) to ground (G) 
Note: Measurand recommends that you do not connect the red and black wire to the data logger's 12 V power and ground or switched 12 V (SW12V) and ground connections. These should be connected directly to your power source.


Figure 14: An example of proper wiring between the data logger and an SAA232

Step 7 - Ground the Logger and Battery Enclosures

Each of the enclosures in the data acquisition system have a grounding lug at the bottom of the enclosure. These lugs are shown from the inside of each enclosure in Figure 15 below.


Figure 15: The grounding lugs from the inside of each enclosure

Figure 16 shows the copper grounding lug as they appear from the outside of the enclosures. Connect the copper grounding lugs from the enclosures to a grounding mechanism. 

Measurand recommends consulting local regulations for grounding for more detailed information on how to properly ground the data acquisition system.


Figure 16: The copper grounding lugs from the outside of each enclosure