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> Honeywell SC200 data acquisition signal conditioner
Honeywell SC200 data acquisition signal conditioner
NEW Honeywell Sensotec signal conditioner /data acquisition module with the signature calibration feature
The Sensotec Model SC200 Signal Conditioner/Data Acquisition Indicator is a versatile device designed to operate with strain-gage sensors, such as pressure and load cell transducers. It is setup with (4) channels. Channels 1-3 are setup for sensors and Channel 4 is a virtual math channel to monitor DC voltage.
The main features of the SC200 are:
Â¥ Up to four channels to handle four signal sources
Â¥ Four alarm limits, with versatile setup
Â¥ Automatic setup, calibration, and scaling through the use of Signature Calibration
Â¥ 16-bit resolution (up to 65,536 parts)
Â¥ Full six-digit (999,999 maximum) display
Â¥ RS-232 or RS-485 communications options
Â¥ Local or remote setup using the RS-232 or RS-485 port
Â¥ Rugged 3/8 DIN aluminum case for bench, panel or rack mounting
Â¥ Fast analog peak detection, without bleed-off
Â¥ Push-button on/off tare feature
The Sensotec Model SC200 is designed to operate with Signature Calibration. It will automatically set itself up with transducers which contain the memory device, but can also be set up using a front panel interactive procedure. The Signature Calibration module can also be programmed from the SC200’s front panel.
The SC200 performs an auto-zero function every 10 seconds, in which the display reverts to zero in the absence of a signal. Auto-zeroing occurs when the
signal has not exceeded 10 display counts during the past 10 seconds. This feature has two advantages:
¥ It removes the effect of slight temperature shifts that occur in the transducer’s output.
Â¥ It eliminates the need for potentiometer adjustments for zero.
Another feature is automatic self-checking, which occurs regularly every 60 seconds The SC200 checks itself for gain and zero accuracy, once per minute if the Auto-Check feature is turned on.
Four separate methods of calibrating the instrument exist. They are:
Â¥ Millivolt-per-volt Calibration
The SC200 provides remote sensing of its excitation voltage, in order to keep the Analog-to-Digital converter (ADC) circuitry correct in output values. This
feature improves accuracy, particularly if your transducer cable is very long or is subject to temperature variations. For short cables, two jumpers installed on
the Amplifier connector bypass this feature.
The starting point of a measurement may not always be a true zero. This is called a preload. An example might be the weight of a scale platform, where we only desire to weigh the contents of the scale, rather than the total weight.
You can use either of these two methods to remove a preload from the display.
The SC200 features two modes of peak detection, digital and analog. In both, the SC200 compares each reading to previous readings and stores the highest value.
Â¥ Digital peak detection, called HI PT ( high point ) detection, is active by default. In this mode, the instrument compares each reading with previous readings and stores the highest value. However, it is possible for a very fast peak to be missed, if it occurs when the converter is not taking a reading. A lowpoint
(valley ) detector operates similarly to detectthe lowest value signal.
Â¥ Analog peak detection, called Fast Peak, becomes active when you turn on Fast Peak in SETUP mode. With Fast Peak active, the SC200 captures a rapid
peak and holds it until the ADC can read it. The instrument digitizes the captured value and then stores it digitally.
