MEMORY HiLOGGER
8420
-51
,8421
-51
,8422
-51
Data Loggers
Internal memory capacity is greatly increased – four times that of previous models!
New multi-channel loggers with enhanced noise immunity
As demand for multi-channel temperature recording for environmental protec-
tion, energy conservation and HACCP activities increase steadily, portability to
enable measurement everywhere and at all times, and communications support for
connecting to IT (information technology) networks are becoming indispensable
capabilities for measurement instruments. Furthermore, at measurement sites, ac-
curate measurements are required in severe conditions such as the presence of dif-
ferent electrical potentials, hum noise from commercial power lines, and switch-
ing noise from inverters. In response to these requirements, we have developed the
new models with enhanced noise immunity from that of the former models.
2
Enhanced functionality in response to user demands
- Main features and product outline -
Features
●
Numerical data logging/recording and trend graph display
●
Completely isolated input channels
No need to worry about potential difference between measure-
ment objects
Applications
●
Power and Gas
•
Trend measurement of machinery output/temperature
•
Watt-hour meter pulse count/output recording of machinery
●
Electronic Device and Component Manufacturing
•
Product testing, quality control recording
●
Real-time saving to large capacity memory card
Use a large capacity memory card for long-term data recording
●
Data collection to a PC via LAN
•
Real-time measurements on PCs running LOGGER
COMMUNICATOR 9334
•
Data acquisition by FTP client/server functions
•
Send e-mail notification of anomalies by SMTP
•
Monitor and control over the Web using HTTP server functions
●
Automobiles, Trains and
Distribution Transportation
•
Collect the necessary data during their
development
●
Building Maintenance, Factory
Facilities
•
Long-term data acquisition for maintenance
•
Food-related temperature recording
Functions upgraded from former models
●
Four Times More Internal Memory
Internal memor y has been increased from 8 to 32
megabytes in the new models, which can now store up to
about 16.77 million data points.
●
Battery Charging Available During Operation
Previously, the battery could be charged only when the
instrument was turned off, but it can now be charged while
measuring. Because of this, if an unexpected power out-
age occurs during long-term measurement and recording,
situations such as measurement discontinuation resulting
from battery self discharge can be avoided, significantly
improving the reliability of long-term measurement.
●
Enhanced Noise Immunity
The circuitry was reviewed from the ground up, and a delta-
sigma type A/D converter was incorporated. The effects
of inverter switching noise and 50/60 Hz hum noise that
previously presented problems have been greatly reduced
by the digital filtering function using the oversampling
principle inherent in this type of device.
Note:
Optimum noise suppression obtained with recording inter-
vals of two seconds or longer
●
Improved Accuracy of Internal Clock
Clock accuracy has been greatly improved (0.2 seconds/
day is the same as the previous Model 8422-01).
●
Chatter Filter Installed for External Trigger
The filter function installed for external triggering prevents
malfunctioning when starting and ending measurement us-
ing a mechanical relay.
External Docking Printer
Pulse totalization /rotation count inputs
•
Up to four input channels
•
All channels isolated
•
For totalization of power and flow
values
Note:
uses special input cable
(CONNECTION
CABLE 9641)
RS-232C Connector
LAN Connector
(10 Base-T)
Get measurement result printouts on site by
docking with the
PRINTER UNIT 8992.
Record long-period trend graphs and print
hard copies of screens.
9329 TERMINAL UNIT (optional)
PC Card slot
Attached Cover
ch 32
ch 31
External Docking Input-Output unit
AC Adapter
The recommended wire diameter
for the instrumentʼs terminal block
is 0.32mm (0.0126 inch). Use
the
TERMINAL UNIT 9329
to
secure smaller-diameter wire.
M3 Screw Terminals
Send control signals to an external device by
docking with the
DIGITAL I/O UNIT 8993
(available with up to 16 channels). Sixteen
logic input channels are also provided. In
addition to analog and pulse inputs such as
for temperature, 16 points of simultaneous
logic signal input are supported.
External Trigger
Terminals
Trigger Output
Terminals
ch 2
ch 1
Temperature /
voltage inputs
•
Up to 32 input channels
(8420
-51
: 8 channels)
(8421
-51
: 16 channels)
•
All channels isolated
3
Temperature/Analog, all inputs isolated
- Measurement Functions -
Universal isolated temperature, voltage and pulse inputs
Universal isolated temperature, voltage and pulse inputs,
Un iversa l measu rement i nputs, volt age, temperat u re
(thermocouple and Pt inputs*
1
) and humidity*
1,2
can be
selected for each channel. In addition, four input channels
are provided for measuring pulse inputs (totalization/
rotation count) simultaneously with voltage, temperature
and humidity. In addition to channel-to-channel input
isolation, t he PC con nection i nter face is completely
isolated from the measurement terminals. Shock hazard
is m i n i m i zed even when t her mo couples a nd volt age
inputs are measured at the same time.
(Maximum rated voltage above ground is 60 V DC.)
*
1
Pt and humidity measurement inputs are supported only by the
8420-51 and
8421-51.
*
2
Requires the
HUMIDITY SENSOR 9653
(both optional).
Measurement parameters
Ranges
100mV f.s.
1V f.s.
10V f.s.
100V f.s.
1 − 5V f.s.
100°C f.s.
500°C f.s.
2000°C f.s.
50,000c f.s.
500,000c f.s.
5Mc f.s.
100Mc f.s.
2,500Mc f.s.
5,000/n (r/s) f.s.*
1
100%rh f.s.
Range of Measurements
-100mV to +100mV
-1V to +1V
-10V to +10V
-60V to +60V
1V to 5V
-100°C to 100°C
-200°C to 500°C
-200°C to 2000°C
0 to 50,000 counts
0 to 500,000 counts
0 to 5M counts
0 to 100M counts
0 to 2,500M counts
0 to 5,000/n (r/s)*
1
5.0 to 95.0%rh
1
Finest Resolution
5μV
50μV
500μV
5mV
500μV
0.01°C
0.1°C
0.5°C
1 count
10 counts
100 counts
2,000 counts
50,000 counts
1/n (r/s)*
1
0.1%rh
Voltage
Temperature
Thermocouples: K, E, J, T,
N, W (WRe5-26), R, S, B
Pulse Accumulation
Sample multiple channels at high speeds
Rotation
Humidity
* n = pulses per rotation (1 to 1,000)
All input channels are quickly scanned, measured and stored within 100 ms (200 ms or more with channels 17 to 32 in Model
8422-51,
and within
about 5 seconds for mixed humidity measurements). As stand-alone instruments, Model
8420-51
provides 4 pulse input channels, plus 8 temperature/
voltage channels, Model
8421-51
provides 4 pulse input channels, plus 16 temperature/voltage channels, and Model
8422-51
provides 4 pulse input
channels, plus 32 temperature/voltage channels. The 32MB of internal memory records about 16.77 million data points.
Real-Time Save to High-Capacity Memory Card
Measurement data can be automatically saved to a PC
Card. Binary (real-time) and text (post-measurement)
formats can be selected. High-capacity Flash ATA
cards up to 1GB can be used for continuous long-term
recording. Choose binary in normal use.This recording
method is linked to writing measurements in real time.
The supplied Wv Wave Viewer software can convert
the data into text format on a PC.
Recording
64MB
64MB
(using 1 channel)
(using 4 channels)
intervals
100ms
36 days
9 days
200ms
72 days
18 days
500ms
180 days
45 days
1s
360 days
90 days
2s
1 year, 355 days
180 days
5s
4 years, 340 days
1 year, 85 days
10s
9 years, 315 days 2 years, 170 days
20s
- omitted -
4 years, 340 days
30s
- omitted -
7 years, 145 days
1min
- omitted -
- omitted -
2min
- omitted -
- omitted -
5min to 1hour
- omitted -
- omitted -
64MB
(using 8 channels)
64MB
(using 16 channels)
64MB
(using 32 channels)
4 days, 12 hours
9 days
22 days, 12 hours
45 days
90 days
225 days
1 year, 85 days
2 years, 170 days
3 years, 255 days
7 years, 145 days
- omitted -
- omitted -
2 days, 6 hours
4 days, 12 hours
11 days, 6 hours
22 days, 12 hours
45 days
112 days, 12 hours
225 days
1 year, 85 days
1 year, 310 days
3 years, 255 days
7 years, 145 days
- omitted -
- NA -
2 days, 6 hours
5 days, 15 hours
11 days, 6 hours
22 days, 12 hours
56 days, 6 hours
112 days, 12 hours
225 days
1 year, 85 days
1 year, 310 days
3 years, 255 days
- omitted -
Real-Time Storage Recording Times with 64 MB Card (approximate times)
Note:
Recording times are calculated values, and cannot be guaranteed. For calculations, one year = 365 days.
Calculated values resulting in extremely long periods are omitted.
What happens if a power failure occurs while measuring ?
We recommend using the real-time saving function of the
MEMORY HiLOGGERs 8420
-51
, 8421
-51
and
8422
-51
with a PC Card. This exclusive technology has been developed to preserve data as reliably as possible
even in the event of a power failure by incorporating PC card technology with the know-how built into the
MEMORY HiCORDER
series recording instruments. When recording only to internal memory without using a
card, stored data is retained for about ten minutes in the event of a power failure.
Color LCD displays waveforms and numerical values simultaneously, and allows viewing earlier data while measuring
Scroll through the displayed graph while saving
measurements in real time to PC Card to verify earlier
measurements. You can also read the values at the
movable cursors.
Standard Measurement Screen
(Measured values appear numerically at the
left, and plotted as a graph at the right together
with the measured values at the cursors.)
Display of Earlier Waveforms
(The green bar at the bottom indicates
the relative location of the current
display in internal memory.)
Display of Current Measurements
(The green bar at the bottom indicates
the relative location of the current
display in internal memory.)
4
LAN Connectivity Supported by PPP Connection to a Telephone Circuit
- Communication Functions -
RS-232C connector through a modem to a telephone circuit or cellular phone).
■
Operation from a PC
The following PC measurements and various web server functions can be employed with a LAN or PPP connection
(by connecting the
• When communicating with a PC using FTP, acquired data is
transferred only in file units.
• The
9334
software with a LAN connection supports quick
response times as short as 100 ms.
• User-created PC commands necessary to use a direct RS-232C
connection. A direct RS-232C connection allows near real-
time measurement data to be obtained with response times of
as little as about a second.
Even on a PC equipped only with a USB port, PC
calculations can be performed using a commercially
available USB-LAN adapter.
• Real-time PC measurement with the optional
LOGGER COMMUNICATOR
9334
• Download acquired data from a PC Card or internal memory using the FTP server
function
• Remote control from a web browser using the HTTP server function
■
Automatic sending from the instrument
• E-mail sending function
• Send data automatically using the FTP client function, or
connect directly to a PC via the RS-232C interface.
Remote measurements by HTTP server operation
The HTTP server function can be used to make instrument settings, control
data acquisition and monitor the instrument screen using a common web
browser such as Internet Explorer, without requiring any special software
application to be installed on the PC.
[Example of HTTP communications via 10Base-T LAN connection]
Function Details
MEMORY HiLOGGER series
PC (www browser)
[Remote Control Screen]
• The instrument screen is duplicated in the web browser.
• Key inputs can be made using the same panel configuration as on the actual
instrument.
• Monochrome/color display and screen refresh rate are selectable.
• The lit/unlit state of the Start LED is refreshed whenever the screen is refreshed.
• By clicking inside the window, the lighting cursor can be moved without having
to use the up, down, left and right arrow keys.
[Data Acquisition by FTP]
• Acquired data in files on a PC Card in the instrument, and
measurement data in internal memory can be transferred by the
web browser using FTP.
• Data being acquired into internal memory cannot be transferred
while measuring. Transfer data after measurement has finished.
• While measuring, data previously transferred from internal
memory can be viewed on the Data Acquisition Screen.
[Starting and Stopping Measurement]
• Start and stop measurement using the web browser.
• Current measurement status can be displayed.
[Current Value Display]
• Measurement data can be displayed as
numerical values.
• During measurement, data acquired on each
channel at every recording interval can be
monitored.
• Instantaneous data input to each channel can be
monitored even when measurement is stopped.
• Selectable screen refresh rate.
[Data Acquisition in Internal Memory]
• Data acquired in internal memory can be
transferred to the browser during measurement,
or the data over an optionally specified range can
be transferred after measurement stops. All data
in internal memory can be transferred.
• Either binary or text data can be selected.
• Data can be freely transferred to MS Excel for
graphing.
5
Communication functions for added convenience
- Communication Functions -
E-Mail Sending
E-mail can be automatically sent through an SMTP mail server to a local network, remote PC or
e-mail compatible cellular phone upon any of the following events: start/stop trigger, alarm, recovery
from power failure, memory full or card full. Up to three e-mail destination addresses can be
specified.
(The
DIGITAL I/O UNIT 8993
is required for alarms)
[Example of sending e-mail via 10Base-T LAN connection]
E-Mail Receiving PC
MEMORY HiLOGGER series
[Example of Sent E-mail]
E-Mail Receiving PC
Automatic Data Sending by FTP Client
Binary data files that are saved automatically to the PC Card during periodic measurement or when finished measuring, are sent
automatically by the instrument to the FTP server on a local network or remote PC.
[Example of FTP data transfer via 10Base-T LAN connection]
MEMORY HiLOGGER series
FTP Server PC
PPP Communication (RS-232C + modem)
By connecting the instrument to a modem using an RS-232C cable, measurement can be controlled from a remote modem-equipped
PC. Connect the instrument to a modem using the
RS-232C CABLE 9721
(straight-through cable for modems).
Application for PC - Wave Viewer (Wv) Software (bundled accessory)
Measurement data (in binary format) from the
MEMORY
HiLOGGER
series can be displayed as waveforms on the
PC screen. It can also be converted (file-by-file or all files)
to CSV-format text data, so the data can be loaded into other
PC applications like Excel.
■
Specifications
Wave Viewer (Wv) Software
(bundled accessory)
• Simple display of waveform file
• Text conversion:
convert binary data file to text format,
with selectable space or tab separators in addition to CSV,
and specifiable section, thinning available
• Display format settings:
scroll functions, enlarge/
reduce display, display channel settings
•
Others: voltage value trace function, jump to cursor/
trigger position function
Functions
PC operating systems
Windows 95/98/Me, Windows NT 4.0
(SP3 or later)
, 2000, XP
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