The
Fluke 2635A Hydra Series II Data Bucket is a 21-channel
data logging instrument that measures and records the
following electrical and physical parameters: dc volts, ac
volts, resistance, frequency, and temperature. Temperature
measurements are via thermocouples or resistance-temperature
detectors (RTDs). Other parameters can be measured with an
appropriate transducer, such as air pressure/vacuum (using a
Fluke PV350 transducer module) or DC current (using a
Fluke
2600A-101 shunt resistor). When the instrument scans
channels configured for measurement, readings can be
displayed, printed out, and recorded. Virtually any analog
input may be applied without external signal conditioning.
The inputs for channels 1 through 20 are via a Universal
Input Module, which plugs into the rear of the unit for a
quick connect/disconnect capability. Channel 0 measurements
are via the front panel input jacks using test leads
(supplied). For a quick introduction to the operation of the
instrument, complete the Ten- Minute Tour at the front of
this manual. A summary of the
Hydra Series II Data Bucket
features is provided in Table 1-1 and complete
specifications in Appendix A. Figure 1-1 shows the
instrument front and rear panels.
Operating Modes
The Data Bucket may be used in a wide variety of
applications using one or more of five operating modes:
· Front Panel Operation
· Memory Card Operation
· Computer Operation
· Printer Operation
· Modem Operation
· Channel Scanning
Can be continuous scanning, scanning at an interval time,
single scans, or triggered (internal or external) scans.
Channel Monitoring may be used while scanning.
· Channel Monitoring
Make measurements on a single channel and view these
measurements on the display.
· Memory Card
Store measurement data and meter configuration setup data on
a removable nonvolatile RAM card.
· Multi-Function Display
Primary display shows measurement readings; also used when
setting numeric parameters.
Secondary display used for numeric entries, channel number
selection and display, status information, and operator prompts.
Annunciator display used to show measurement units, alarms
review parameters, remote status, and configuration information.
· Front-Panel Operation
Almost all operations can be readily controlled with the
front panel keys.
· Measurement Input Function and Range
Volts dc (VDC), volts ac (VAC), frequency (HZ), and
resistance (Ω) inputs can be specified in a fixed
measurement range. Autoranging, which allows the instruments
to use the measurement range providing the optimum
resolution, can also be selected.
· Temperature Measurement
Thermocouple types J, K, E, T, N, R, S and B, and Hoskins
Engineering Co. type C are supported. Also, DIN/IEC 751
Platinum RTDs are supported.
· Totalize Events on the Totalizing Input
· Alarm Limits and Digital Output Alarm Indication
· Four-Terminal Resistance Measurements (Channels 1 through
10 only)
· RS-232 Computer
Interface Operation
· Measurement Rate Selection
· Nonvolatile Memory
Storage of minimum, maximum, and most recent measurements
for all scanned channels.
Storage of Computer
Interface setup, channel configurations,
and calibration values.
Internal storage of measurement data: storage for 100 scans
of up to 21 channels, accessible only through the computer
interface.
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