ACR Systems OWL 100 Manual

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Foreword

Part I Introduction to OWL Data Loggers

1 Features

2 Description

3 How OWL Data Loggers Take Readings

4 How to use OWL Data Loggers

5 Installation

6 General Specifications

7 Approvals

8 How to use this Guide

9 Comments and Suggestions

10 Limited Warranty

Part II OWL Temperature Data Logger (Internal

Part III OWL Temperature Data Logger (External

Part IV OWL Electric Current Data Logger

1 Description

2 Setup and Use

3 Current Probes and Accessories

4 Specifications

5 Trouble-shooting

6 Applications

Part V OWL DC Voltage Data Logger

1 Description

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Contents

Table of Contents

Summary of Contents for ACR Systems OWL 100

Page 1: Table Of Contents
2 Setup and Use ........................... 18 3 Current Probes and Accessories ........................... 19 4 Specifications ........................... 20 5 Trouble-shooting ........................... 20 6 Applications ........................... 20 Part V OWL DC Voltage Data Logger 1 Description ........................... 21 © 2001 ... ACR Systems Inc.
Page 2 OWL Data Loggers 2 Setup and Use ........................... 21 3 Choosing Transducers ........................... 23 4 Specifications ........................... 25 5 Applications ........................... 25 Part VI OWL 20 mA Data Logger 1 Description ........................... 26 2 Setup and Use ........................... 26 3 Choosing Transmitters ...........................
Page 3: Part I Introduction To Owl Data Loggers
Each model can reliably record up to 10 years of time-based data for later analysis, by TrendReader Software, on any IBM PC or 100% compatible computer. © 2001 ... ACR Systems Inc.
Page 4: Features
OWL Data Loggers Features The OWL logger features: · optical data transfer · optical flashing alarm · selective measurement ranges · holds over 32,000 readings · Polyurethane water-tight case · Noryl Plastic water-tight snap case · water-tight connector for external inputs ·...
Page 5: How Owl Data Loggers Take Readings
8 seconds, 20 seconds, 1 minute, 2 minutes, 5 minutes, 10 minutes and 30 minutes. In fast read mode intervals between 0.2 and 10 seconds may be chosen. To help determine which sampling rate you should choose, answer these questions: © 2001 ... ACR Systems Inc.
Page 6 OWL Data Loggers How long do I need to record data? How much time will elapse between when I retrieve the logger(s) and download the data to my computer (i.e. the trip back to the office)? How often do readings need to be taken? Figure 1 Making External Connections If you are using your OWL Data Logger to monitor external modules, sensors, or circuitry, make sure...
Page 7: Installation
To analyze your OWL Data Logger, you must first backup the logger's data onto your computer. To do this, double click on the com port icon, Backup. The logged data is automatically saved to disk, time and date-stamped, and converted into the appropriate measurement units. © 2001 ... ACR Systems Inc.
Page 8: General Specifications
OWL Data Loggers Figure 3 Figure 4 General Specifications General Size: 60 x 48 x 19mm (2.4" x 1.9" x 0.75") Case Material: Polyurethane © 2001 ... ACR Sy stems Inc.
Page 9: Approvals
Guide. To get the most from our products, please take the time to familiarize yourself with TrendReader software and TrendReader manual. This Reference Guide frequently refers to TrendReader conventions and procedures, so time taken here will be well spent. © 2001 ... ACR Systems Inc.
Page 10: Comments And Suggestions
In no event shall ACR Systems Inc. be liable for any inconveniences, loss, damages etc. whatsoever arising out of the use of this product.
Page 11: Part Ii Owl Temperature Data Logger (Internal Sensor)
The first number (on the left above the slider bar) is the midpoint of the range you want to measure, and the second number (on the right) is the size of that range. © 2001 ... ACR Systems Inc.
Page 12: Specifications
OWL Data Loggers 3. Refer to the TrendReader manual for other options. 4. To start the logging session, point the wand at the logger then select Send Setup. Specifications Internal Temp. Logger Sensor type: NTC thermistor 10W @ 25ºC (77ºF) Range: -40º...
Page 13: Part Iii Owl Temperature Data Logger (External Sensor)
Setup option. 2. Make sure the External Sensor equation corresponding to the probe attached to the logger is chosen - see Specifications. Then select a range that best fits the expected data (see Appendix A © 2001 ... ACR Systems Inc.
Page 14: Specifications
OWL Data Loggers for a list). Selecting the range TrendReader enables you choose the size of a range and to choose a midpoint for a range. The advantages of taking these two steps are: 1. The smaller the size of a range the higher the resolution of the readings. Figure 2.1 2.
Page 15 0.05°C (0.09°F) to 0.5°C (0.9°F) @ Center 0.10°C (0.18°F) to 1.0°C (1.8°F) Effective 0.40°C (0.72°F) to 4.0°C (7.2°F) Outside ±87% Cable: 8 m (26ft) standard length with twisted-pair Teflon® insulated wire, water-resistant / chemical-resistant splice, PVC jacket to IP67 © 2001 ... ACR Systems Inc.
Page 16: Applications
OWL Data Loggers connector. Equation: ET-086 Oven Temperature Probe Description: NTC thermistor and cable potted into the end of a 1" (25mm) long by 3/16" (5mm) diameter cylindrical stainless steel tip. R25 Value: 26.266 KW Range: 70 to 255°C (155 to 490°F) Max Temp.: 275°C (525°F) Accuracy:...
Page 17: Part Iv Owl Electric Current Data Logger
Readings from the current probe are scaled into amperage units through equations (in TrendReader Software) that match the current probe and its range setting. © 2001 ... ACR Systems Inc.
Page 18: Setup And Use
OWL Data Loggers Figure 3.1 Setup and Use The procedure for setting up the OWL Electric Current Data Logger is as follows: 1. Plug the current probe into the receptacle on the logger. 2. Adjust the range switch on the current probe to suit the application. A good way to verify a conductor's maximum range is to check the circuit breaker or fuse rating.
Page 19: Current Probes And Accessories
This avoids sparking and prevents the connectors from prematurely deteriorating. 2. The OWL Electric Current logger can only be used with current probes from ACR Systems (altered Amprobe Instruments models A60FL, A70FL, A65FL and A75FL). These probes provide low voltage DC current in proportion to the signal being measured.
Page 20: Specifications
OWL Data Loggers Specifications Current Probes Output Current: 260 µA full scale into 400 ohms. Cable: 6 ft. (2m) length with PVC jacket to IP67 connector. Accuracy: 2.5% of full scale. Ranges: The following table lists the usable range available for each setting. Table 3-3.
Page 21: Part V Owl Dc Voltage Data Logger
- see Table 4-1. DC Voltage ranges are picked to match the transducers full scale output value. For example, if a transducer with a 0 to 5 volt output is used then range number 18 which measures up to 7.3 VDC gives the best resolution. © 2001 ... ACR Systems Inc.
Page 22 OWL Data Loggers 4. To start the logging session, point the wand at the logger then select Send Setup. Figure 4.1: DC Voltage Wiring Figure 4.2 Table 4.1: DC Voltage Ranges © 2001 ... ACR Sy stems Inc.
Page 23: Choosing Transducers
(greater than 10k ohms). This prevents the unnecessary draining of current from the transducer circuit. The OWL DC Voltage logger's input is high impedance (greater than 100k ohm). Check the specifications for the transducer to ensure the OWL's input impedance is acceptable. © 2001 ... ACR Systems Inc.
Page 24 OWL Data Loggers Three-Wire Transducers Three-wire transducers have three connections: a supply (excitation) voltage input (V+IN), an output voltage (SIG+) and a common (COM-). A three wire transducer can be identified by reviewing the wiring diagram and looking for a single common connection. These types of transducers are the most popular and are recommended for use with the OWL - see Figure 4-3.
Page 25: Specifications
> 100 KW Cable: 2m (6ft) length with PVC jacket to IP67 connector Equation: Applications · monitoring transducer outputs · checking process controller signals · providing laboratory data · determining random event times · recording speed © 2001 ... ACR Systems Inc.
Page 26: Part Vi Owl 20 Ma Data Logger
OWL Data Loggers OWL 20 mA Data Logger Features The OWL 20mA Current Data Logger provides a versatile means of recording a process signal in a small, water-resistant enclosure. It is made to connect to 4-20mA type transmitter current loops. Description The 20mA Current Logger measures and records analog 0 to 24mA signals common in process control and instrumentation environments.
Page 27: Choosing Transmitters
These can be obtained from many manufactures and distributors. To figure out what to look for when choosing transmitters, it is helpful to know a few technical terms associated with current loops. © 2001 ... ACR Systems Inc.
Page 28: Specifications
OWL Data Loggers Maximum Impedance An important consideration when choosing transducers is the requirement for loop impedance. This simply refers to how much resistance the instrumentation (for example, the OWL logger) can have before it will begin to cause problems. For current loop inputs, it is advantageous to have a very low impedance (the OWL 20mA Current logger has a 100 ohm impedance).
Page 29: Applications
· obtaining environmental data using transmitters such as: 1. conductivity 2. pH probe 3. turbidity 4. carbon dioxide 5. dissolved oxygen · checking fluid level · analyzing pneumatic and hydraulic pressures · monitoring flow-meters · testing process control loops © 2001 ... ACR Systems Inc.
Page 30: Part Vii Owl 200 And Custom Equations
OWL Data Loggers OWL 200 and Custom Equations The Owl Data Logger can also be used with other Negative Temperature Coefficient thermistor probes. Using Create Thermistor Equation in TrendReader For Windows, you can create an equation for situations where none of TrendReader's standard equations will work with the specific thermistor that you wish to use.
Page 31 'KELVIN=' (in scientific notation) will now be entered into the line 'c=' in the following equation. This will now yield a calibrated thermistor reading for the specific thermistor. (in this example, the result will be the same as an ET-016 thermistor. © 2001 ... ACR Systems Inc.
Page 32: Owl Calibration
OWL Data Loggers Figure 6.4 The input source variables for the OWL logger are listed in the following table: Input source variable tables Table 6-1: Input Source Variables for OWL Info Logger Variable Description Source0 Internal reading between 0 and 248 Source1 Time in seconds between data points Source2...
Page 33 NOTE: Make sure range is set before you calibrate. Calibration only applies to that range. To set the size of the range (not applied to OWL-500), click the left or right arrow (in OWL setup) until you find a range size that suits your purpose. © 2001 ... ACR Systems Inc.
Page 34: Part Viii
OWL Data Loggers APPENDIX A APPENDIX Temperature Ranges Temperature Ranges The OWL Data Logger allows selection of ranges for each temperature equation entered. Use the following table to determine the most suitable range. The list is sorted by midpoint and the size on either side follows the "±" sign. For example, the range 10.8 ±...
Page 35 146.03 ± 24.54 C 17.40 ± 8.57 C -12.23 ± 7.12 C 76.60 ± 11.94 C 148.11 ± 15.29 C 17.54 ± 13.90 C -12.14 ± 11.55 C 76.92 ± 19.37 C 148.54 ± 24.80 C © 2001 ... ACR Systems Inc.
Page 36 OWL Data Loggers 17.86 ± 14.06 C -11.88 ± 11.68 C 77.36 ± 19.60 C 149.11 ± 25.10 C 18.88 ± 14.01 C -11.03 ± 11.64 C 78.78 ± 19.56 C 150.93 ± 25.06 C 18.70 ± 19.43 C -11.22 ± 16.14 C 78.70 ±...
Page 37 551.2 ± 360.9 C 191.3 ± 149.7 C 120.4 ± 112.7 C 378.7 ± 267.9 C 557.2 ± 365.2 C 195.6 ± 142.4 C 124.1 ± 106.9 C 383.8 ± 256.1 C 563.2 ± 249.5 C © 2001 ... ACR Systems Inc.
Page 38 OWL Data Loggers 199.3 ± 144.4 C 126.8 ± 108.1 C 391.4 ± 261.2 C 574.0 ± 357.0 C 202.9 ± 146.3 C 129.4 ± 109.4 C 398.7 ± 266.1 C 584.5 ± 364.4 C 206.3 ± 148.1 C 131.8 ± 110.5 C 405.8 ±...
Page 39 107.55 ± 17.79°F 46.47 ± 14.57°F 232.59 ± 25.62°F 379.15 ± 33.00°F 107.9 ± 189.3°F 41.9 ± 155.2°F 252.4 ± 273.8°F 409.4 ± 353.8°F 109.77 ± 17.91°F 48.29 ± 14.66°F 235.79 ± 25.84°F 383.27 ± 33.30°F © 2001 ... ACR Systems Inc.
Page 40 OWL Data Loggers 110.4 ± 40.4°F 48.64 ± 33.02°F 237.4 ± 58.3°F 385.6 ± 75.1°F 111.90 ± 18.03°F 50.04 ± 14.75°F 238.87 ± 26.05°F 387.25 ± 33.58°F 112.7 ± 40.6°F 50.48 ± 33.23°F 240.7 ± 58.8°F 389.8 ± 75.8°F 113.95 ± 18.15°F 51.71 ±...
Page 41 440.4 ± 287.0°F 295.6 ± 211.8°F 842 ± 542°F 1217 ± 751°F 445.0 ± 289.6°F 298.9 ± 213.5°F 852 ± 549°F 1232 ± 762°F 449.6 ± 292.2°F 302.0 ± 215.1°F 862 ± 556°F 1246 ± 773°F © 2001 ... ACR Systems Inc.

This manual is also suitable for:

Owl 300 Owl 200 Owl 20 ma

ACR Systems OWL 100 Manual

Part III OWL Temperature Data Logger (External Sensor)

Part IV OWL Electric Current Data Logger

Part VIII

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