Acksen DS-108 User manual

Temperature Monitor/Logger DS-108
English User Instructions
General Description
The DS-108 is an 8 channel temperature monitor and logger which connects to a PC via a
USB port, ideal for use in laboratories, workshops, classrooms and on site. It has 8 input
channels for use with digital temperature probes which operate between -55C (-67F) to
+125C (+257F), as well as an internal circuit/ambient temperature (a ninth channel). The
DS-108 also has 8 digital (0/1) input channels which allow the monitoring and logging of
the status of switches, interlocks, pumps, compressors, fans, doors, etcetera. The digital
input channels can accept DC voltages up to 30Vdc, voltages from 0V to 1.8V are
considered logic 0 (off) and voltages from 2.2V to 30Vdc are considered logic 1 (on). A
range of signal conditioning interface circuits are available to convert parameters such as
mains voltage, light intensity, magnetic field strength to a voltage level appropriate to the
digital input channels (0-5Vdc).
1. DS-108 hardware
The DS-108 Is housed in a strong ABS case with 8 temperature inputs on the front, via
3.5mm jacks and 8 digital inputs (0Vdc to 30Vdc) on the rear, via screw terminals. The DS-
108 also has a 5V/400mA output to power any peripheral signal conditioning circuitry. To
communicate with the PC the DS-108 must be connected to a Personal Computer (PC) via
a USB A to B cable.
2. TempLog Software (download free from www.acksen.com)
TempLog runs under Microsoft®Windows XP, Vista, 7, 8, 10 or 2003/2008/2012 Server. It
will allow the user to:-
Monitor and record data from the DS-108 on the PC, in both tabular and graphical format.
Store the data to disk and / or export to spreadsheet format.
Print data and/or reports.
3. USB A to B cable
Used to connect the DS-108 to a PC.
4. Carry case
The carry case allows you to keep the DS-108, temperature probes, USB lead and any
conditioning circuitry together.
5. Digital Temperature Probes and Leads
The standard DS-108 ‘SET’ comes complete with 4 (four) digital temperature probes with
3.5mm plugs, with 3m (10ft) leads, ‘DS-108-4-3- SET’.
Hardware requirements
To run TempLog you must have a PC with Microsoft Windows XP, Vista, 7, 8, 10 or
2003/2008/2012 Server.
Our minimum system specification is a 2Ghz Intel Core2Duo, 2GB RAM, 1GB free disk
space, 1366x768 resolution, 24-bit colour and Windows XP.
Our recommended system specification is a 3.1Ghz Intel i5-3450, 8GB RAM, 1GB free
disk space, 1920x1200 resolution, 24-bit colour and Windows 7, 8 or 10.
Installing TempLog (download free from www.acksen.com)
Download and run the TempLog installation software from our website. Follow the on-
screen instructions to complete installation. After installation run TempLog from the Start
menu in Windows.
Getting started
The DS-108 is powered from the USB port on the PC, it normally takes around 100mA. The
5V output on the DS-108 is fused to 400mA, so the DS-108 should never take more than
500mA. When you first connect the DS-108 to the PC you may have to wait until Windows
installs the correct drivers before you can communicate with the DS-108.
When the DS-108 is connected to the PC it is automatically powered, signified by the
flashing blue LED on the front.
Open the TempLog software and if you have not run the software before, register and then
use the ‘Detect Logger’ option to connect to the DS-108.
To record the data from the DS-108, simply press the ‘Start Recording’ button.
This document is produced in conjunction with the Help file contained in TempLog, which
contains a detailed explanation of all features and contains important information which
should be studied prior to using this product.
Within the software you can set the units to Celsius, Fahrenheit or Kelvin. You can set
temperature alarm levels, label and colour the channels and set many other parameters.
You can also input details of the data recording situation, the location, the item under test,
the experiment details. Data can be viewed in a tabular form, a dashboard or in a graph.
For tests longer than 24 hrs the data is automatically saved to a new file each day at 12:00
midnight, so tests that are longer than a day will be split into files of a maximum duration of
24 hours; a week long test will have 7 files each representing 24 hours of data.
Features & Benefits
Feature
Benefit
Unit is small and lightweight.
Easy to install.
Easy to use Windows software.
Can be used by non-technical staff.
Accurate temperature measurement.
Digital probes require no calibration.
Digital logic inputs
Allows correlation of other parameters
The standard ‘DS-108-4-3- SET’is supplied with 4 (four) digital temperature probes, with 3m
leads. These probes require no calibration. The probes have a range of -55C to +125C
which is -67F to +257F. Simply plug the 3.5mm plugs into the relevant channel on the
logger, start the TempLog software and your logger will transmit the readings to the PC. For
help using the software, please read the Help File shipped with the software.
The digital input channels are used to monitor, record and correlate the status of other external
ancillary or related equipment, for example in a refrigeration system to record, was the
compressor on, was the door open, was the lighting on, etcetera. External signal conditioning
circuits are available to convert the external parameter to the levels necessary for the digital logic
inputs:-
Light sensor, detects light levels and inputs a digital signal to the DS-108 when the light is above
a set level.
Mains voltage sensor, detects 120/230Vac and inputs a digital signal to the DS-108 when
voltage is present.
Magnetic field sensor, detects magnetic flux density levels and inputs a digital signal to the DS-
108 when the flux is above a set level, this can be used to detect the proximity of an item or
whether or current is flowing in a conductor.
Other input conditioning circuits may become available, please contact your local supplier
regarding any special needs you have.
The voltage inputs and the +5V/400mA output are on the rear of the product. The 5V out is rated
at 400mA maximum. Grounds (Gnd) is common and also common to the USB Gnd. The label on
the underside of the logger detail the input and output connections. The inputs have a maximum
of +30Vdc with respect to Gnd (0V). The 5Vdc output can be used to power conditioning circuitry
or for any other use you may have, it is fused internally to 400mA. Logic inputs 0Vdc to ~2Vdc are
considered 0 (off) and ~2.1Vdc to 30Vdc logic 1 (on)

Technical Specifications
Measurement accuracy
Generally better than ±0.5°C
(from -10°C to +85°C)
Probe measurement range
-55C to +125C (-67F to +257F)
Sampling Frequency
Each channel is sampled once per second.
Memory capacity
PC dependent
Probe sensor
Dallas DS18B20 1-Wire Digital Thermometer
Resolution mode used
12 Bit, corresponds to 0.0625°C
Real-time clock accuracy
PC dependent
Logging resolution
1 second
Interface type
USB A to B
TempLog Software
Microsoft Windows based (XP or later)
Operating temperature of Logger
(not probes)
-15C to +40C
Weight
300 g
Case Dimensions
180 x 20 x 40 mm (7”x 0.8” x 1.6”)
Specifications subject to change without notice.
Calibration
Each probe is individually calibrated during manufacture. TempLog software does also allow
the user to check the calibration of the probes. It is recommended that the same probes be
used in the same input channels each time the DS-108 is used.
Maintenance
Prior to each use of the product check the DS-108 casing for signs of damage (cracks,
broken or loose parts) or misuse. Check the leads for any signs of damage, ensure the outer
insulation later is not broken. If the unit is damaged in any way it should NOT be used and
should be returned to the supplier. The unit must not be used for any other purpose than for
that recommended by the manufacturer. The unit must not be submerged in any liquid.
Cleaning
Wipe the outside of the case with a clean cloth damped with IPA (Isopropyl Alcohol).
Warranty
All Acksen products carry a minimum 1 year back to base warranty covering manufacturing
defects and component failures. The device contains no user-serviceable parts and as such
should only be repaired by skilled and authorised personnel. Failure to comply could result
in unsafe operation and should not be attempted under any circumstances. Contact below
for a list of approved service agents.
Note: Any unauthorised repair or adjustment will automatically render the warranty invalid.
Repair and spare parts
Acksen Ltd.
28 Station Road
Whiteabbey
Newtownabbey
Co. Antrim BT37 0AW
United Kingdom
Or an approved repair company.
Returning a product for repair
If returning a product to the manufacturer for repair, it should be sent freight pre-paid to the
appropriate address. A copy of the Invoice and of the packing note should be sent simultaneously
by airmail to expedite clearance through Customs. A repair estimate showing freight return and
other charges will be submitted to the sender, if required, before work on the device commences.
WEEE
For EU customers Acksen Ltd offer a product take-back service. For customers within the
European Union (only) and products manufactured or sold by us; when those products reach the
end of their life, simply send them back to us at your expense, we will dispose of them according
to the relevant legislation. WEEE Reg. No. WEE/DD2117VU.
Part No: DS-108-UI-En.PDF
Web: www.acksen.com