ACR Electronics OWL series Reference Manual

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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com

OWL Data Loggers

Reference Guide

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Page 1 IMPORTANT! Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com OWL Data Loggers Reference Guide Copyright © 2010 ACR Systems Inc. All Rights Reserved.
Page 2 OWL Data Loggers Copyright © 2010 ACR Systems Inc. All Rights Reserved. All rights reserved. No parts of this work may be reproduced in any form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval systems - without the written permission of ACR Systems Inc.
Page 3 TRADEMARK NOTICES TrendReader is a Registered Trademark of ACR Systems Inc.
Page 5: Table Of Contents
Contents Table of Contents Section I OWL Data Logger 1 Introduction to OWL Data Loggers ............................1 Features ................................Description ................................How OWL Data Loggers Take Readings ................................How to use OWL Data Loggers ..............................................................Installation ................................General Specifications Approvals ................................
Page 6 OWL Data Loggers ..............................Choosing Transducers Applications ................................7 OWL 20 mA Data Logger ............................31 ................................Description ................................Setup and Use Choosing Transmitters ................................Specifications ................................Applications ................................8 APPENDIX A Temperature Ranges ............................35 Temperature Ranges ................................9 APPENDIX B Sample Rates ............................
Page 7 WELCOME Congratulations on your purchase of a JR-1000 data logger. We are confident that you will find it to be a most valuable and useful tool for your data collection applications. This Reference Guide is designed to be used hand-in-hand with TrendReader Standard software and frequently refers to TrendReader Standard conventions and procedures.
Page 8: Section I Owl Data Logger
OWL Data Loggers SECTION 1 OWL Data Logger Introduction to OWL Data Loggers OWLs are easy-to-use, battery-powered data loggers. Pocket-sized and rugged, they can be used in a wide range of environmental and industrial applications. There are a number of models available to directly measure and record variables such as temperature, electric current, analog voltage, and current loop.
Page 9: How Owl Data Loggers Take Readings
OWL Data Logger Self-contained operation and its small size permit easy installation. The internal lithium battery typically lasts up to 10 years or at least 1,000 backups. Unique identification names stored in each logger allow for convenient tracking. A 32,768 byte unlimited-write-cycle memory is used to store the measurements from an 8-bit (equivalent to 10-bit resolution on narrow ranges) analog-to-digital converter while a quartz crystal oscillator keeps track of time.
Page 10: Installation
OWL Data Loggers Setup To setup your OWL data logger you must first have TrendReader Software installed and running on your computer. You can then configure your logger with various software setup options. Set Sample Rate Always confirm the sample rate (how often the logger takes readings) to make sure it will be acceptable for your application.
Page 11: General Specifications
OWL Data Logger Do not rely on the logger's magnetic strip for adhesion if the mounting surface is uneven, unstable or above 65° C (150°F). Keep Track Make sure to keep a record of where you have placed each logger in a building or system plan.
Page 12: Approvals
OWL Data Loggers Readings: Continuous (first in, first out) or stop when full at user-programmable intervals between 0.2 seconds and 12 hours. Resistance to X-rays: Tested for protection against a 160 kV 150 mA-sec. dose @ 38 in. F.F.D. (about 100 times that of an airport X-ray machine).
Page 13: Owl Software Driver
OWL Data Logger OWL Software Driver TrendReader software uses a software driver to communicate with OWL data loggers. The software driver takes the form of two windows. The Status window, shown when you contact the logger, is used to display the settings currently stored in the data logger. The Setup window, shown when you select Edit Setup, is used to alter the current settings and apply the changes to the data logger.
Page 14: Logger Channel
OWL Data Loggers 1.2.1 Logger Channel When you contact the logger, the logger status is displayed. The Channel line gives the description, the number of readings stored, the Realtime value, and the time of the next reading. The Realtime value is based on the equation that you select for the channel. The equation is selected in the Setup window but is not shown in the Status window.
Page 15 OWL Data Logger field and select the equation from the drop-down list. * * Note that if a custom equation is not available when Edit Setup... is selected (e.g.: deleted) then the equation will be shown as unknown. If a new equation is not selected the Realtime value will not display correctly.
Page 16: Channel Calibration
OWL Data Loggers select the maximum and minimum range values by simply dragging the bar. The OWL 500 does not have an adjustable range but does display the default range settings for information. For any of the loggers, if the input value exceeds the range, the maximum range value will be recorded.
Page 17: Logger Status
OWL Data Logger 1.2.2 Logger Status When you contact the logger, the logger status is displayed. The Status line indicates whether the data logger is actively logging, waiting to start or dormant. If you set up the logger with no delay, it will immediately start logging and the status will show the number of readings, or samples, that have been taken.
Page 18: Fast Sampling
OWL Data Loggers shown. To find out more about sample rates and to view a set of sample rate tables, see Appendix B Sample Rates. 1.2.2.1.1 Fast Sampling With the fast sampling mode, you can select sample rates from 0.2 seconds (5 readings per second) to 10 seconds.
Page 19: Logger Memory
OWL Data Logger 1.2.2.2 Logger Memory The Memory subsection indicates how the data is stored in memory and what the start and end times (or capacity) are for the data logging. In the FIFO (First In, First Out) mode, the logger continually stores data and when the memory limit is reached, the new readings start to overwrite the oldest readings.
Page 20 OWL Data Loggers days, 1 hour, and 38 minutes ahead. Note that the logger will begin to record based on the Trigger Flash settings once the Start Time has been reached. Size If you do not want to use the entire memory to store readings, click on the Size field and enter the new size.
Page 21: Logger Triggering
OWL Data Logger 1.2.2.3 Logger Triggering High & Low Triggers Triggers are used to indicate when any reading has exceeded preset thresholds and begin logging once the limit has been crossed. The Trigger Threshold values for the OWL Logger are based upon the Equation and limited by the Midpoint/Range selected.
Page 22 OWL Data Loggers * Note that if the Start Time has been set to a delay that starts after the trigger limit has been crossed the logger will not start to log until the Start Time is reached. Once the Start Time has been reached the logger will record based upon the Trigger and Flash settings as noted above.
Page 23: Owl Temperature Data Logger (Internal Sensor)
OWL Data Logger OWL Temperature Data Logger (Internal Sensor) Features The OWL Temperature Data Logger with the Internal Sensor offers temperature recording in a small, water-resistant enclosure. In addition to its rugged construction, the logger can be setup to record a wide range of temperatures, all configurable by a few, easy keystrokes. 1.3.1 Description The Internal Sensor Temperature Logger uses an on-board thermistor to record changes in...
Page 24: Specifications
OWL Data Loggers 1.3.3 Specifications Internal Temp. Logger Sensor type: NTC thermistor 10kW @ 25ºC (77ºF) Range: -40 to 70ºC (-40 to 158ºF) Accuracy: ±0.5ºC @ 25ºC (±0.9ºF @ 77ºF) Resolution: 0.5ºC @ 25ºC (0.9ºF @ 77ºF) Better than 1.0ºC (1.8ºF) between -25 and 70ºC (-13 and 158ºF) Better than 2.0ºC (3.6ºF) between -40 and -25ºC (-40 and -13ºF)
Page 25: Owl Temperature Data Logger (External Sensor)
OWL Data Logger OWL Temperature Data Logger (External Sensor) Features The OWL Temperature Data Logger with the External Sensor offers temperature recording in a small, water-resistant enclosure. The connection between the temperature probe and the logger is water-resistant. There are four temperature probes available that can monitor a wide range of temperatures, and custom equations can be written to use other probes.
Page 26: Specifications
OWL Data Loggers resolution for the readings. Choosing the midpoint allows you to control where the highest resolution will occur: readings closest to the midpoint of a temperature range are higher in resolution than those at each end of the range. See Appendix A Temperature Ranges for a list of the available ranges.
Page 27 OWL Data Logger Accuracy: ±0.2°C (±0.36°F) between 0 to 70°C (32 to 158°F) ±1.0°C (±1.8°F) between -60 to 100°C (-76 to 212°F) Resolution: 0.5ºC @ 0ºC (0.9ºF @ 32ºF) Better than 1.0ºC (1.8ºF) between -50 and 40ºC (-58 and 104ºF) Better than 2.0ºC (3.6ºF) between -65 and -50ºC (-85 and -58ºF) Cable:...
Page 28: Applications
OWL Data Loggers Max Temp.: 275°C (525°F) Accuracy: ±1°C (±1.8°F) between 120 to 260°C (248 to 500°F) Resolution: 0.6ºC @ 150ºC (1.1ºF @ 302ºF) Better than 1.0ºC (1.8ºF) between 100 and 200ºC (212 and 392ºF) Better than 2.0ºC (3.6ºF) between 200 and 250ºC (392 and 482ºF) Cable: 8m (26ft) standard length with twisted-pair moisture-proof...
Page 29: Owl Electric Current Data Logger
OWL Data Logger OWL Electric Current Data Logger Features The OWL Electric Current Data Logger is a versatile equipment performance logger. It is useful for recording a single phase of alternating current without having to interrupt circuitry under test. It offers added protection against high voltage spikes, such as lightning, with optical isolation between logger and computer.
Page 30: Setup And Use
OWL Data Loggers produces an output of approximately 260 microamps full scale for each range available on the current probe. Readings from the current probe are scaled into amperage units through equations (in TrendReader software) that match the current probe and its range setting. 1.5.2 Setup and Use The procedure for setting up the OWL Electric Current Data Logger is as follows:...
Page 31: Current Probes And Accessories
OWL Data Logger available on the A60FL, A65FL, A70FL and A75FL probes. Always make sure the current you will be recording will fall into the appropriate range you set on the current probe. 1.5.3 Current Probes and Accessories OWL Electric Current loggers come with a choice of current probes modified to plug into the logger with no tools.
Page 32: Troubleshooting
OWL Data Loggers 10 to 100 A 25 to 250 A 25 to 250 A 50 to 500 A 1.5.5 Troubleshooting The OWL Electric Current logger seems to give wrong readings. What's wrong? · If the graphs seem incorrect, check the equation number assigned to the graph file. This equation number must correspond to the model number of the current probe used.
Page 33: Owl Dc Voltage Data Logger
OWL Data Logger OWL DC Voltage Data Logger Features The OWL DC Voltage Data Logger provides a versatile means of recording a variety of signals in a small, water-resistant enclosure. It can be configured for easy interface with common transducer outputs. 1.6.1 Description The DC Voltage Logger can measure and record analog DC voltage covering 32 ranges from...
Page 34: Owl Data Loggers
OWL Data Loggers Select a range that best fits the expected data - see Table 4-1. DC Voltage ranges are picked to match the transducer's 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.
Page 35: Specifications
OWL Data Logger 1.940 VDC 39.00VDC 1.6.3 Specifications Voltage Input Ranges: 0 to 120mV, 240mV ... 1.92V 0 to 2.40V, 4.80V ... 38.4V Max Voltage: ±40VDC Accuracy: ±1% full scale Resolution: 0.5% (8 bits) Input Impedance: > 100k ohms Cable: 2m (6ft) length with PVC jacket to IP67 connector Equation: 1.6.3.1...
Page 36 OWL Data Loggers Maximum Impedance An important consideration when choosing transducers is the requirement for input or loop impedance. This simply refers to how much resistance your instrumentation (for example, the OWL logger) can have before it will begin to cause problems. For voltage inputs, a very high impedance is usually required (greater than 10k ohms).
Page 37: Applications
OWL Data Logger (+/-), usually in the millivolt range - see Figure 4-4. Figure 4-3: Line Type Transducer Connection Figure 4-4: Bridge Type Transducer Connection Output The specified output of a transducer will determine whether it is compatible for use with the OWL DC Voltage logger.
Page 38: 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. 1.7.1 Description The 20mA Current Logger measures and records analog 0 to 24mA signals common in...
Page 39: Choosing Transmitters
OWL Data Logger Refer to the OWL Software driver for other options. Figure 5-1: 20 mA Current Wiring 1.7.3 Choosing Transmitters A transmitter is a term usually reserved for transducers in a current loop circuit. A transducer is a device that receives energy from one system and retransmits it, in a different form, to another system.
Page 40: Specifications
OWL Data Loggers be used with the OWL - see Figure 5-2. Figure 5-2: Two Wire Transmitter Connection Output The specified output of a transmitter will determine whether it is compatible for use with the OWL 20mA Current logger. The most popular transmitter output is 4-20mA which can be used with the 0 to 24mA input on the OWL.
Page 41 OWL Data Logger · checking fluid level · analyzing pneumatic and hydraulic pressures · monitoring flow-meters · testing process control loops Copyright © 2010 ACR Systems Inc. All Rights Reserved.
Page 42: Appendix A Temperature Ranges
OWL Data Loggers APPENDIX A Temperature Ranges Temperature Ranges 1.8.1 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 51: Appendix B Sample Rates
OWL Data Logger APPENDIX B Sample Rates Sample Rates 1.9.1 How a Data Logger Stores Readings The sample rate of your data logger is the frequency with which it stores readings in its memory. A selected sample will apply for all channels on a SmartReader Plus. If you set your data logger's sample rate to eight seconds, it reads its input channels and stores the readings once every eight seconds.
Page 53: Index
Index OWL 200 18 Index OWL 300 22 OWL 400 26 - C - OWL 500 31 Current 31 - P - Applications 22 Process Signal Probe 22 Applications 31 - D - Transducer 31 Data Logger 1 - S - DC Voltage Sample Rates 44 Applications 26...

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Owl 100 Owl 500 Owl 200 Owl 300 Owl dc

ACR Electronics OWL series Reference Manual

Section I OWL Data Logger

APPENDIX A Temperature Ranges

APPENDIX B Sample Rates

Index

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