The DTS-HAZ digital thermostat is a microprocessor
based temperature control and power
connection kit. It is used for freeze protection
or process temperature maintenance of pipes or
tanks protected by heat tracing products. This
thermostat can be used with Constant Wattage,
Mineral Insulated or Self-Regulating heating
cables in Ordinary area or Class 1, Division 2 and
IECEx/ATEX Zone II hazardous area locations.
This unit is designed to provide local temperature
control and monitoring for heat traced pipes
or tanks across a variety of industries and applications
and will switch 30 amperes of current.
The DTS-HAZ provides easy programming of the
temperature set point, high and low temperature
alarms, the deadband, the temperature units, the
soft start function and the alarm state through
the front panel push buttons. LED lights are provided
for indication of power to the unit, heater
power on (load) and alarm status. A Fail Safe
solid state alarm is included for wiring to your
building management system to indicate alarm
status. This alarm may be set to open or close on
all alarm conditions including loss of power, high
or low temperature alarm and RTD failure. Choose
either the DC or the AC customer supplied voltage
alarm variation. The minimum operating
ambient temperature is -40°F (-40°C). This unit
has programmable high and low temperature
alarm set points from -80°F (-62°C) to 1150°F
(621°C). For temperatures over 500˚F (260˚C) or
for use with MI cables, use the High Temperature
Adapter Kit.
The DTS-HAZ employs a Soft Start feature that
uses a proprietary software algorithm which
eliminates the inherent self-regulating in-rush
current, resulting in less nuisance tripping at
cold temperatures. For added flexibility, the user
may disable the soft start feature for non-heat
trace applications. The alarm contact may be
either normally open or normally closed.
A 100 Ohm platinum RTD is provided with a 3
foot (1 m) lead resulting in flexible mounting
options for the user.
- Freeze Protection of Piping
- Process Temperature Maintenance of Piping
- Tank Freeze Protection
- Tank Process Temperature Maintenance
- Hazardous Areas