Mechanical Feature Comparison of Sentra HE, LE & VE Series Temperature Control Units

Generally, Sentra 'SK' Series temperature control unit mechanical packages are similar but there are a few differences that are determined by the instrument. Use the chart below to compare.

Sentra Temperature Control Units

Use the Open to Open & Close the sections below.

Electrical & Instrumentation
Mercury Heater Contactor
HE: Yes
LE: Yes
VE: Yes
Pump Motor Contactor
HE: Yes
LE: Yes
VE: Yes
Transformer
HE: Yes
LE: Yes
VE: Yes
Fused 110 Volt Control Circuit
HE: Yes
LE: Yes
VE: Yes
Installed 10' Power Cord
Power cord not included on custom units and units with heaters larger than 16kw and/or pumps larger than 3 hp.
HE: Yes
LE: Yes
VE: Yes
Number of Sensor Probes
HE: 2
LE: 1
VE: 1
Remote Instrument Option
HE: Yes
LE: No
VE: No

Pressure Gauges
To Process
HE: Yes
LE: Yes
VE: Yes
From Process
HE: Yes
LE: Yes
VE: Yes

Limit
HI Temperature Limit
HE: Yes
LE: Yes
VE: Yes
150 PSI Pressure Relief Valve
HE: Yes
LE: Yes
VE: Yes
Water Supply Pressure Switch
HE: Yes
LE: Yes
VE: Yes
Pump Motor Overload
HE: Yes
LE: Yes
VE: Yes
110 Volt Alarm Output
HE: Yes
LE: Yes
VE: No

FLow Meter
Hall Effects Sensor
HE: Yes
LE: No
VE: No
Digital Display
HE: Yes
LE: No
VE: No
Magnetic Rotator
HE: Yes
LE: No
VE: No

Heating Cylinder
Custom Casting
HE: Yes
LE: Yes
VE: Yes
Flange Mounted Heater
HE: Yes
LE: Yes
VE: Yes
Flange Mount to Pump
HE: Yes
LE: Yes
VE: Yes
Machined To Process Port
HE: Yes
LE: Yes
VE: Yes
Non-Ferrous Construction
HE: Optional
LE: Optional
VE: Optional

Cooling Cycliner
Custom Casting
HE: Yes
LE: Yes
VE: Yes
Flange Mount to Pump
HE: Yes
LE: Yes
VE: Yes
Machined From Process Port
HE: Yes
LE: Yes
VE: Yes
Machined Water Supply Port
HE: Yes
LE: Yes
VE: Yes

Cooling Valve
AVT� Modulating Valve
HE: Yes
LE: Yes
VE: No
PVT� Solenoid Valve
HE: No
LE: No
VE: Yes

Pump
Custom Cast Casing
HE: Yes
LE: Yes
VE: Yes
Flange Mounts for Cylinders
HE: Yes
LE: Yes
VE: Yes
Pump Seal Flush
HE: Yes
LE: Yes
VE: Yes
Stainless Steel Pump Shaft
HE: Yes
LE: Yes
VE: Yes
Bronze Pump Impeller
HE: Yes
LE: Yes
VE: Yes
Non Ferrous Construction
HE: Opt
LE: Opt
VE: Opt

Cabinetry/Frame
Thermoformed Polymer Front Panel
Thermoformed polymer front panel is not installed on custom units and units with heaters larger than 16kw and/or pumps larger than 3 hp.
HE: Yes
LE: Yes
VE: Yes
Stainless Steel Cabinetry
HE: Yes
LE: Yes
VE: Yes
Galvanized Steel Base
HE: Yes
LE: Yes
VE: Yes
2" Swivel Casters
HE: Yes
LE: Yes
VE: Yes
Lift-Off Access Panel
HE: Yes
LE: Yes
VE: Yes

Close Circuit Cooling
Indirect Cooling via Heat Exchanger
HE: Optional
LE: Optional
VE: Optional

Warranties
Mechanical
HE: 2 Year
LE: 2 Year
VE: 2 Year
Pump Seal
HE: Lifetime
LE: Lifetime
VE: Lifetime
Heater
HE: 4 Year
LE: 4 Year
VE: 2 Year
Instrument
HE: 4 Year
LE: 4 Year
VE: 4 Year
AVT™ Valve
HE: 4 Year
LE: 4 Year
VE: n/a
PVT™ Valve
HE: n/a
LE: n/a
VE: 2 Year

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