Description : SHIVA Controls & Systems' Model DI-516,
Multi-channel digital temperature indicator is an
ideal instrument virtually for any industry or
application, where multi-channel temperatures
have to be measured and monitored from a
convenient and centralized place.

This compact and highly reliable instrument can
accept any one type of RTD or thermocouple
sensors. All the thermocouple inputs are compensated for cold junction error. The scanned channel number is indicated on a 2-digit display and the scanned temperature is indicated on a 3 1/2 digit display. Open sensor indication is a standard feature. The temperature indication
resolution is 10C.

This instrument can be used either in auto-scan
or manual mode. In manual mode the measured
temperature can be viewed one channel after
another by pressing the 'Advance' switch. In
'Auto' scan mode, all the channels are scanned
and displayed automatically one channel after
another and if the user desires to view any
particular channel for a long time, by pressing the 'HOLD' switch, the same can be done. The
front panel accessible trim pot can adjust the
scan rate time. Normally, the standard scan rate
time or 'DWELL' time can be adjusted from 2 to 20 seconds. However, larger scan rate time can
be given on request. The other unique and useful
in this instrument is if any channel is unconnected or any sensor is open and when that particular channel is encountered during the
scan, the same is 'Auto-skipped' i.e. the status of
the channel is displayed for the minimum time of
the scan rate insted of the preset scan rate time.

High input impedance of each channel ensures
long-term measurement accuracy. A double-pole
Butterworth low pass filter and RF suppression
network is included in the circuitry to handle noisy industrial environments.