Crystal DTG - Manual

C R Y S T A L
engineering corporation
PN: 2646 REV B, 8/2002
Firmware Release 1.05
Page 1 of 8
DTG Operation Manual
Introduction
Thank you for choosing the Digital Test Gauge (DTG) from Crystal Engineering
Corporation.
The DTG is very much like a mechanical test gauge:
Rugged, accurate, and easy to use. The difference,
of course, is the greater accuracy possible with
a digital display and, through an advanced
design, accuracy that is specified in percent
of reading over the entire operating
temperature range of -10°C (14°F) to
50°C (122°F).
The large LCD was designed to be
reliable and easy to see under a variety
of environmental conditions. The DTG
display is a full five digits (99999), so auto-
ranging is not required: There’s always
enough display resolution for the rated
accuracy.
The silicon chip pressure sensors used in all DTGs are
highly repeatable over pressure and temperature. DTG
sensors incorporate a permanently filled, oil isolated
stainless steel diaphragm in an all-welded fitting. The only
wetted materials are 316 stainless steel. Integral to the
process connection is a stainless steel filter, insuring that only gases or liquids reach
the sensor diaphragm.
Other features include:
• Select from up to 9 different pressure units (depending on pressure range)
• Minimum and maximum pressure detection
• Automatic shutdown after 20 minutes (shutoff can be easily disabled)
• 1500 hour battery life (continuous use) on 3 standard alkaline AA batteries
Long battery life while maintaining high performance is the result of using a RISC
(Reduced Instruction Set Computer) type microprocessor. The case is electro-
polished stainless steel with elastomeric seals, for weather and corrosion resistance.
And finally, the DTG is manufactured and serviced by a company that only makes
pressure measuring instruments. It’s the only thing we do and that’s why we say:
Pressure is Our Business!