Partlow
MRC 7700 Circular Chart Relative Humidity Recorders
• Direct
reading of % RH
• Wet/bulb/Dry bulb sensing
• Compensates for changes in barometric pressure
and differences in temperature
• Available as a single or dual pen recorders,
recording controller or recording profile controller
• Optional RS485 communications, battery backup
• Three year warranty
• CSA, UL, CE approvals
With the MRC 7700 Circular Chart Relative Humidity
Recorders, Controllers, Profilers automatic calculation
feature the need to use charts, graphs, and arithmetic
to manually figure relative humidity is eliminated.
Moreover, it compensates for barometric pressure
changes and differences in temperature.
The MRC 7700 Circular Chart Relative Humidity
Recorders, Controllers, Profilers records, controls,
and profiles relative humidity and/or temperature
using dry bulb/wet bulb temperatures, from a variety
of inputs, on a circular chart. The calculation
of R/H and compensation for barometric pressure
changes and temperature differences using a special
algorithm increases accuracy and saves time.
Using the wet-bulb/dry-bulb sensing rather than
a humidity sensor, the recorder operates efficiently
and accurately even in elevated ambient temperatures
and dirty environments that normally harm humidity
sensors.
The MRC 7700 Circular Chart Relative Humidity
Recorders, Controllers, Profilers also offer many
valuable features: auto transfer, position proportioning
output, remote setpoint, remote run/hold, auto/manual
operation, setpoint lock-out, output limiting,
ten-inch circular chart, displays for each process
value, no DIP switches, full parameter programming
with large tactile keys, up to six-events, relay
outputs or SSR drivers, two alarms per channel
(process/deviation/deviation band reverse or direct),
eight profiles with six ramp/soak segments each,
and process value retransmission.
In addition, the MRC 7700 Circular Chart Relative
Humidity Recorders, Controllers, Profilers have
a security enable mode system feature which protects
all parameters and data from unauthorized changes.
Each version may be specified with an RS-485 communications
option for easy access to process variables via
your computer.
