Special purpose signal conditioners
Stroud Instruments special purpose units comprise a diverse range of signal converters :-
- Set-point generators
- Raise-lower / set-point
- Ramp generators
- High or Low analogue signal selectors
- Analogue signal comparator
- Status signal long distance transmitter / receiver
- Analogue signal long distance transmitter / receiver
- Rate limiters
- Rate of change monitor
- Status to analogue converter
- BCD to analogue converter
Quick links
Set-point generators
Analogue set-point
Analogue set-point generators provide a current (mA) or voltage output, the magnitude of which is controlled either by a front panel control, a remotely mounted potentiometer or as a fixed set-point.
B12-1 Series set-point generators
- Adjustable or fixed set-point versions
- Remote set-point version
- High impedance mA output drive option
- AC or low voltage (11-32 VDC, 12-24VAC) powered versions
- Wall or DIN rail mounting
- Module unplugs without disturbing wiring
- Analogue circuitry used throughout
- B12-1A -a front of module mounted multi-turn dial (illustrated).
- B12-1RP -a remote set-point with the set-point potentiometer and dial supplied loose for remote mounting e.g. in a control panel or enclosure door or
- B12-1F -a fixed output which is internally set to the level required.
Frequency set-point
The Frequency set-point generator provides a pulsed output, the frequency of which is controlled either by a front panel control or a remotely mounted potentiometer.
112-52 Pulse generator
- Provides a pulsed output signal for testing, simulation and other applications requiring a variable set-point frequency
- Variable frequency output
- Optional relay or open collector outputs
- Local or remote set-point
- AC or low voltage (11-32 VDC, 12-24VAC) powered versions
- Wall or DIN rail mounting
Digital raise - lower set-point (time controlled output)
Digital Raise - Lower units provide a time controlled ramped mA or voltage output which is controlled by Raise (up) and Lower (down) signals. The output rises whilst the 'Raise' input signal is present. Similarly the output falls whilst the 'Lower' input signal isactive. In the absence of active 'Raise' or 'Lower' signals the output is held at the current value.
112-65s Raise - Lower (set-point) / Ramp Generator
- When configured as a Raise Lower Unit (set-point generator), provides a scaleable ramped output signal
- Output is controlled by Raise, Lower and Reset inputs
- Switch selectable ramp times
- Programmable response to simultaneous
raise and lower input signals - Programmable reset actions
- Fully programmable with optional PC software
- Ramp scaleable between max. & min. limits
- Voltage, current, open-collector or volt-free contact inputs
- Output signal options cover all common process signals Universal mains power
- Universal 85-260 VAC
or 18-36 VDC powered - Wall or DIN rail mounting
C16-65 Raise-lower / Ramp generator
In raise-lower mode and with the same functionality as the 112-65s, the specification for the C16-65 is enhanced by providing:
- Externally adjustable ramp periods
- User selectable output types
- User selectable input types
Other features are:-
- Output is controlled by Raise, Lower and Reset inputs
- Programmable response to simultaneous
raise and lower input signals - Programmable reset actions
- Fully programmable with optional PC software
- Ramp scaleable between max. & min. limits
- Voltage, current, open-collector or volt-free contact inputs
- Output signal options cover all common process signals Universal mains power
- Universal AC/DC powered
(85-260 VAC, 24-200 VDC) - Wall or DIN rail mounting
Ramp generators
Ramp Generators provide a ramped mA or Voltage output signal started and stopped by momentary 'Start' and 'Stop' signals. The 'Stop' signal halts the ramp with the output is held at the current value. Four ramp types are supported each of which may be set to generate a single period wave form or, using the repeat option, a continuous wave form.
112-65s Ramp generator
Configured as a Ramp Generator this unit provides a scaleable ramped output signal.
- Output controlled by Start, Stop and Reset inputs
- Output may be free-running ramp or one shot,
- Low to High,
- High to Low,
- Low to High to Low or
- High to Low to High - Switch selectable ramp times
- Programmable response to simultaneous
start and stop input signals - Programmable reset actions
- Fully programmable with optional PC software
- Ramp scaleable between max. & min. limits
- Voltage, current, open-collector or volt-free contact inputs
- Output signal options cover all common process signals Universal mains power
- Universal 85-260 VAC
or 18-36 VDC powered
- Wall or DIN rail mounting
C16-65 Raise-lower / Ramp generator
In ramp mode the C16-65 has the same functionality as the 112-65s (in ramp-mode), but with the an enhanced specification including:
- Externally adjustable ramp periods
- User selectable output types
- User selectable input types
- Universal AC/DC power supply
High / low signal selectors
112-20A Low selector, 112-21A High selector
These instruments will provide an output which is equal to, or proportional to, the highest (112-21A) or the lowest (112-20A) of up to six input signals. The output can be converted into a signal of a different type.
Wall or DIN rail mounting.
Analogue comparator
112-22A Comparator
Compares two input signals and provides a relay output which changes state when the signals differ by an amount set by a front panel control. Two relays each provide one change-over and one normally open contact. One relay operates when input A is greater than input B, the other when input B is greater than input A. Wall or DIN rail mounting.
Status signal long distance transmission
COM-60 Status transmitter, COM-61 Status receiver
Provides a solution for long-distance transmission of a switched state, e.g. a high / low alarm, over telecom lines where a copper connection is unavailable. The Transmitter accepts either open-collector, volt-free contact or voltage change type inputs and converts off/on states into 400Hz/2000Hz tones for transmission.
The Receiver converts the transmitted tones into a relay output (SPCO).
Wall or DIN rail mounting.
Analogue signal long distance transmission
COM-70 Analogue transmitter, COM-71 Analogue receiver
Provides a solution for long-distance transmission of an analogue signal (4-20mA or 1-5V) over telecom lines where a copper connection is unavailable. The Transmitter converts the analogue input into 400-2000Hz sinewave signal. The Receiver converts the transmitted tones into a 4-20mA signal. Wall or DIN rail mounting.
Rate limiters
B12-17 Series rate limiters
Provide a range of isignal conditioners for controlling the rate of change (e.g. signal damping) of a process signal. These units may also provide signal conversion. The time constant is adjustable by a front panel mounted dial.
Wall or DIN rail mounting.
Rate of change monitor
B12-18 Signal conditioner (rate of change monitor)
Provides an output signal, with a magnitude proportional to the rate of change of the input signal. The output signal can be configured to indicate decreases as well as increases in the rate of change of the process variable.
Wall or DIN rail mounting.
Status to analogue converter
112-61s Status to analogue converter
Provides an analogue output which is proportional to the number of active inputs. Each unit will accept up to five inputs but multiple units (current output) may be connected in parallel. The number of input signals required for full scale output is set by internal switches. Wall or DIN rail mounting.
BCD to analogue converters
116-24A BCD to analogue converter
Accepts up to four decades of BCD data and converts to a proportional analogue signal. This unit is programmable for input range for FSD and output signal range and type. The input range for full scale may be set anywhere between 0 - 9999. The output signal may be set to either 0-10mA, 0-20mA, 2-10mA, 4-20mA, 0-1V, 0-5V, 0-10V, 0.2-1.0V, 1-5V or 2-10V. Also provides a trickle-charging output for battery-powered optical encoders.
Wall mounting.
