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Fluke 2625A Hydra Data Logger, 21-Channel
The Hydra Series is available in three models to fit many
application requirements. The 2620A Hydra Data Acquisition Unit is a
compact front end for use with your PC. The portable 2625A Hydra Data
Logger features non-volatile memory that stores more than 2000 scans, for
stand-alone applications. And the 2635A Hydra Data Bucket with its
removable memory card for data and set-up storage is the most versatile
model - ideal for remote monitoring applications.
All models are easy to set up and reconfigure from the front
panel. Additionally, all units have bi-directional communication via
RS-232C, which enables control from a host computer. The RS-232C interface
also supports stand-alone use with a serial printer. An optional
GPIB/IEEE-488 interface is available for the 2620A only.
The Hydra Series is extremely rugged and able to operate in
diverse environments. Its operating range is 0 to 60¼C, and it is tested
to stringent shock and vibration standards. Hydra's sturdy metal chassis
effectively shields against electromagnetic interference, maintaining high
measurement accuracy on low level signals. The analog circuitry is also
isolated from the digital circuitry so you can measure high voltages
directly (up to 300V ac rms). And it conforms to I.E.C., C.E. and CSA
safety standards. What's more, all set-up information is battery-backed,
so it's immune to power failure. Hydra will return from a power loss and
resume scanning, while all configuration information and stored data
remain intact. Features
Hydra Series Portable Data Acquisition
The Hydra Series offers easy portability along with Fluke's
built-in signal conditioning and Universal Input Module at a price to fit
your budget. You can easily retrieve data from the Hydra units via the
RS-232 interface, or through a modem in upload or real-time mode.
Channel information and measurement parameters can be set up
directly from the front panel or your PC.
Three models featuring removable memory card data storage,
internal memory storage, and direct real-time data transfer options.
Should power fail, these instruments automatically resume
data collection when power is restored.
Simply push a few front panel buttons or load instrument
setups from the memory card.
The Hydra Data Bucket gives advance indication of a low
battery or low memory condition on the memory card. Its internal memory
buffer continues to store up to 70 scans while the card is
removed.
A low-cost alternative for stand-alone monitoring
operations.
A built-in nonvolatile memory that can store more than
2000 scans.
The ability to upload stored data or transfer real-time
data via modem, or directly to your PC via the RS-232 port.
Hydra is ideal for applications that require direct
connection to a PC for real-time data collection.
An RS-232 serial interface makes it easy to connect the
Hydra Data Acquisition Unit to a PC or modem for real-time data
acquisition. The 2620A can also be used as a 20-channel panel meter.
An optional IEEE-488 interface easily allows you to
integrate the 2620A with other IEEE-488 instruments and your PC. The
2620A delivers workhorse performance for a wide variety of applications
such as test and monitoring systems.
The removable Universal Input Module enables fast,
convenient set-up and reconfiguration. Any combination of dc voltage, ac
voltage, thermocouple, RTD, resistance, or frequency measurements can be
connected to the input module without the need for additional signal
conditioning. Thermocouple reference junction compensation is
automatically performed by sensing the temperature of the input module's
isothermal block. For applications with multiple measurement locations,
purchasing additional input modules provides the ability to quickly
connect and disconnect a Hydra to these various sites while leaving all
sensor wiring intact.
The 2635A Hydra Data Bucket has been designed for
applications where data is gathered in a stand-alone manner "on
location" and later uploaded to a PC for analysis and/or archiving.
Three models of the Hydra Data Bucket are available with PC memory cards
ranging in size from 256K, 1 Mb, 2Mb and 4Mb in size. Up to 450,000
readings may be stored on a 2M byte memory card. For applications where
large amounts of data are generated, you may swap memory cards without
interrupting the Data Bucket's scanning.
The optional Memory Card drive provides an easy way to
transfer your data from the Data Bucket's memory card to a PC. It may
also be used to download your latest Data Bucket set up to the memory
card for later use in the field.
The Hydra Logger Package is an optional DOS Based software
package that allows you to set up all channels and functions of one or two
Hydras using your PC.
The Logger Package controls Hydra's scanning, collects data,
graphs any eight channels in real-time, and creates a data file which may
be directly imported into Lotus 1-2-3 or other spreadsheets for further
analysis. All these capabilities are controlled via simple menus on your
PC's display, either through a keyboard or mouse.
The Hydra Logger for Windows software package gives you a
powerful data acquisition system when combined with a Hydra instrument
and your PC. Hydra Logger gives you control of Hydra's powerful
functions, including scanning, signal conditioning, sensor
linearization, alarm detection and reporting, non-volatile data memory,
advanced trend plotting and more. "Logger" supports the 2625A and 2635A
Hydra models. With Hydra Logger's optional, trend plotting package,
Trend Link for Fluke, you can control how your data is displayed. You
can quickly scroll through real time and historical data, or view data
from all channels simultaneously, on a single screen. Or, you can plot
one or multiple channels in real time, even superimposing channels on
other channels. Zoom in and out features, and statistics make this
optional package ideal for report and analysis needs.
For stand-alone use without a PC, the print function in all
Hydra models controls the data flow to a local serial printer. Autoprint
has three operating modes: print all data; print all data if any channel
is in alarm; or print all data if any channel has transitioned into or out
of alarm. The 2625A Hydra Data Logger and the 2635A Data Bucket are also
able to store and print data simultaneously, thereby allowing you to
access the data later for further analysis on your PC.
AC or dc current measurements may be accomplished using
either 2620A-101 current shunts or external current probes. Using Mx+B
scaling provides direct readings in amps. For lower current levels, shunts
may be located in the input module. Specifications
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Technical Specifications
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DC Volts |
Range: 90 mV to 300/150V
Resolution: 1 µV to 10
mV
Accuracy (3-Sigma)± 0.018% |
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AC Volts |
Range: 300 mV to 300/150V
Resolution: 10 µV to 10
mV
Accuracy: (3-Sigma)± 0.13% |
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Resistance |
Range: 300W to 10 MW
Resolution: 10 mW to 1
KW
Accuracy: (3-Sigma)± 0.013% |
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Frequency |
Range: 15 Hz to 1 MHz
Resolution: 0.01 Hz to 1
kHz
Accuracy: (3-Sigma)± 0.05% |
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RTD (Pt 100) |
Range: -200 to 600¼C
Resolution:
0.02¼C
Accuracy: (3-Sigma)± 0.05¼C |
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J Thermocouples |
Range: -100 to 760¼C
Resolution: 0.1¼C
Accuracy:
(3-Sigma)± 0.39¼C |
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K Thermocouples |
Range: -100 to 1372¼C
Resolution:
0.1¼C
Accuracy: (3-Sigma)± 0.45¼C |
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T Thermocouples |
Range: -150 to 400¼C
Resolution: 0.1¼C
Accuracy:
(3-Sigma)± 0.39¼C |
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Other Thermocouple types |
R, S, B, C, E, N |
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2625A Data Memory Specifications
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2625A Data Storage |
Stores 2047 scans; stored with each scan: time stamp,
all defined analog input channels, the status of four alarm outputs
and eight digital I/O, and the totalizer count |
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Scan Contents |
Memory life: 5 years minimum; at 25¼C
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General Specifications |
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Channel Capacity |
Analog Inputs: 21; Digital I/O & Alarm Outputs: 12
total; Totalizer: 1 |
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Power |
90V ac to 264V ac (50 Hz or 60 Hz), or 9V dc to 16V
dc; less than 10W. (If both sources are applied simultaneously, the
greater of ac or dc is used. At 120V ac the equivalent dc voltage is
~14.5V) |
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Temperature, Humidity (non-condensing) |
Operating: 0 to 28¼C, <=90% RH; 28¼C to 40¼C,
<=75% RH; 40¼C to 60¼C, <=50% RH; Storage: -40¼C to 75¼C, 5 to
95% RH |
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Altitude |
Operating: 3050m (10,000 ft); Storage: 12,200m (40,000
ft) |
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Common Mode and Normal Mode Voltage |
300V dc or ac rms (channels 0,1,11); 150V dc or ac rms
(all other channels) IEC Overvoltage Category II. |
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Isolation |
Analog input to analog input, and analog input to any
digital input: meets IEC 1010 for 300/150 volts reinforced and
ANSI/ISA-S82.01-1988 and CSA 231 for 250 volts single insulation
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Safety |
Complies with applicable sections of the IEC1010,
ANSI/ISA-S82.01-1988, CSA231, UL 1244, CSA 556B, CE. |
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RF Emissions |
Passes FCC EMI Class A Equipment and VDE 0871B
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Size |
9.3 cm x 21.6 cm x 31.2 cm (3.67" x 8.50" x 12.28")
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Weight |
2.95 kg (6.5 lb) |
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Memory life |
10 years typical for real-time clock, set-up
configuration and measurement data in 2625A, memory cards typically
5 years for the 256 kB card |
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Interfaces |
RS-232C connector: nine pin male (DB-9P) |
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Signals |
TX, RX, DTR, GND |
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Modem Control |
Full duplex |
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Baud Rates (Set from front panel) |
300, 600, 1200, 2400, 4800, 9600, 19.2k, 38.4k
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Echo (Set from front panel) |
On/Off |
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Flow Control |
XON/XOFF |
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IEEE-488 (Optional, 2620A Only) |
Complies with IEEE-488.1 Standard; disables RS-232C
Interface while in use |
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