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Sample Sequencer
Specifications
Input Analog Signal: 0-20 mA or 4-20 mA or any voltage input between 0-10 V with proper
scaling resistor (plug-in socket scaling resistor - See Appendix H).
Output Analog Signals: Four 0-20 mA or 4-20 mA independently isolated at minimum 500 V
per channel
Maximum Load Resistance: 600 Ohms
Enclosure: NEMA 4X, IEC529, IP67 with knockouts.
General: Power: 108-132/216-264 Vac, 47-63 Hz (jumpers for 220 Vac applications - See Appendix F)
Wiring: Screw Terminals
Enclosure: ABS watertight NEMA 1,2,3,3R,4,4X, 5,12 & 13. Europe: IP 65 to DIN 40050
Enclosure Dimensions/Mounting: 9.44" x 6.29" x 3.54" / Wall or surface mounting
Adjustments: Offset and Gain potentiometers for each output channel
Hold Control: Holds when opening the input control terminals; tracks when closing the
control terminals (tracks one channel at a time)
Operating Temperature: -5 to +70°C
Operating Humidity: 90% RH max., non-condensing
Weight: 2.3 lbs.
Specification for Plug-In Electronic Track & Hold Board (6-02499E)
Purpose: The plug-in track & hold card has four independently isolated channels which each operate in
two modes: the track mode, where the output follows proportionally to the input during the
respective dwell time, and the hold mode, where the output value is held via digital memory
until the next dwell time.
This card is ideal for applications with analyzers being sequenced between multiple sample
lines. The hold feature permits the last reading for each of four channels to be held until the
next sequenced reading for the respective channel occurs. Use of the card prevents the non-
active channels from dropping to zero between readings thereby avoiding potential system
alarm problems.
The card is versatile to accommodate many applications. One or two circuit cards may be
plugged inside the Sample Sequencer to provide up to eight sample outputs.
The card can be used for applications where dual outputs from one analog input signal are
required. Dual outputs are obtained by field configuration. For instance, the card may be
used if dual analog signals for plant DCS and recorders are required. A maximum of four
outputs or two pairs, may be obtained from each card.
The plug-in track and hold board will output 0 mA on points which are turned off.
Input Analog Signal: 0-20 mA or 4-20 mA
Output Analog Signals: Four 0-20 mA or 4-20 mA independently isolated at minimum 500 V
per channel per circuit board.
Maximum Load Resistance: 525 Ohms
SENTRY Equipment Corp • P. O. Box 127 • Oconomowoc, WI 53066 • 262/567-7256 • FAX: 262/567-4523
Web: www.sentry-equip.com • e-mail: sales@sentry-equip.com
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