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RF100 Series
I/O Board Specifications (optional)
Available Channels
1 - Dedicated Analog Input (AI)
2 - Selectable Analog Input (AI) or Output (AO)
3 - Dedicated Discrete Input (DI)
4 - Selectable Discrete Input (DI) or Output (DO)
5 - Dedicated Discrete Output (DO)
Configurations (Selectable)
• 1-AO, 1-AI, 2-DI, 1-DO
• 1-AO, 1-AI, 1-DI, 2-DO
• 2-AI, 2-DI, 1-DO
• 2-AI, 1-DI, 2-DO
Classification
FCC Class A and CISPR 22 computing device
Analog Input
Quality/Type: Single-ended, voltage-sense analog
inputs (current loop if scaling resistor is used).
Signal: 1 to 5 Vdc, software configurable.
4 to 20 mA, with 250W resistor installed across
“+” and “-” terminals.
Terminals
• AI1 or AI2 (+) Positive Input
• ACOM (-) Negative Input (common)
Accuracy: 0.5% over -40 to 149°F
(-40 to 65°C) range.
Isolation: None
Input Impedance: 1MW
Filter: Single pole
Resolution: 10 bits
Conversion Time: 200 µs
Sample Period: 1.0-second minimum
Analog Output
Quality/Type: 0 to 2 Vdc output or 4 to 20 mA current
Terminals
• AO (+) Positive Output
• ACOM (-) Negative Output (common)
Resolution: 8 bits
Accuracy: 0.5% of full-scale output
Reset Action: Output goes to last value (software
configurable) on power-up (warm start) or on
watchdog time-out
Discrete Input
Quality/Type: Contact-sense discrete input or
voltage sourced 3.3 to 24 Vdc
Terminals
• DI1 or DI2 (+) Positive Input
• DCOM (-) Negative Input (common)
Current Rating: 35 µA in the active (on) state,
0 µA in the inactive (off) state
Isolation: None
Frequency: 0.5 Hz maximum
Sample Period: 1.0 second minimum
Discrete Output
Quality/Type: Solid-state switch
Terminals
• DO1 or DO2 (+) normally-open contact
• DCOM (-) common
Switch Rating: 24Vdc @ 12 mA maximum or
12 Vdc @ 10 mA maximum
Environmental
Meets the Environmental specifications of the
RegFlo units in which the board is installed.
RTD Interface (optional)
RTD Input
Quantity/Type: Single input for a 2, 3 or 4-wire
RTD element with alpha of 0.00385
Sensing Range: -40 to 167°F (-40 to 75°C)
Introduction
Scope of Manual
This instruction manual provides generalized guidelines
for successful installation and operation of the
RegFlo RF100 Series flow and pressure instruments.
Planning helps to ensure smooth installation. Be sure
to consider location, ground conditions, climate, and site
accessibility as well as the suitability of the application
when planning an installation. Refer to the appropriate
Accuracy: ±1.0°F (-18° to -17°C) over sensing
range (includes linearity, hysteresis, repeatability).
Resolution: 16 bits.
Sample Period: 1 sec minimum.
instruction manuals when installing and maintaining
regulators and other equipment used with the
RF100 Series instruments.
Product Description
The RF100 Series pressure and flow instruments are
devices which measure and archive flow and pressure
data. The Type RF110 instrument is used as a standalone pressure recorder. The Type RF100 instrument
is mounted on a regulator, such as a Type EZR and
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