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

Sentra HE & LE Series controls are no longer in production.

Replacements are the Temptender for the HE and the G-Series for the LE.

Sentra HE & LE Series controls are no longer in production. Replacements are the Temptender for the HE and the G-Series for the LE.

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

Electrical & Instrumentation
HE
LE
VE
Mercury Heater Contactor
Yes
Yes
Yes
Pump Motor Contactor
Yes
Yes
Yes
Transformer
Yes
Yes
Yes
Fused 110 Volt Control Circuit
Yes
Yes
Yes
Installed 10' Power Cord
Yes
Yes
Yes
Number of Sensor Probes
2
1
1
Remote Instrument Option
Yes
No
No
Pressure Gauges
HE
LE
VE
To Process
Yes
Yes
Yes
From Process
Yes
Yes
Yes
Limit
HE
LE
VE
HI Temperature Limit
Yes
Yes
Yes
150 PSI Pressure Relief Valve
Yes
Yes
Yes
Water Supply Pressure Switch
Yes
Yes
Yes
Pump Motor Overload
Yes
Yes
Yes
110 Volt Alarm Output
Yes
Yes
No
FLow Meter
HE
LE
VE
Hall Effects Sensor
Yes
No
No
Digital Display
Yes
No
No
Magnetic Rotator
Yes
No
No
Heating Cylinder
HE
LE
VE
Custom Casting
Yes
Yes
Yes
Flange Mounted Heater
Yes
Yes
Yes
Flange Mount to Pump
Yes
Yes
Yes
Machined To Process Port
Yes
Yes
Yes
Non-Ferrous Construction
Optional
Optional
Optional
Cooling Cycliner
HE
LE
VE
Custom Casting
Yes
Yes
Yes
Flange Mount to Pump
Yes
Yes
Yes
Machined From Process Port
Yes
Yes
Yes
Machined Water Supply Port
Yes
Yes
Yes
Cooling Valve
HE
LE
VE
AVT™ Modulating Valve
Yes
Yes
No
PVT™ Solenoid Valve
No
No
Yes
Pump
HE
LE
VE
Custom Cast Casing
Yes
Yes
Yes
Flange Mounts for Cylinders
Yes
Yes
Yes
Pump Seal Flush
Yes
Yes
Yes
Stainless Steel Pump Shaft
Yes
Yes
Yes
Bronze Pump Impeller
Yes
Yes
Yes
Non Ferrous Construction
Opt
Opt
Opt
Cabinetry/Frame
HE
LE
VE
Thermoformed Polymer Front Panel
Yes
Yes
Yes
Stainless Steel Cabinetry
Yes
Yes
Yes
Galvanized Steel Base
Yes
Yes
Yes
2" Swivel Casters
Yes
Yes
Yes
Lift-Off Access Panel
Yes
Yes
Yes
Close Circuit Cooling
HE
LE
VE
Indirect Cooling via Heat Exchanger
Optional
Optional
Optional
Warranties
HE
LE
VE
Mechanical
2 Year
2 Year
2 Year
Pump Seal
Lifetime
Lifetime
Lifetime
Heater
4 Year
4 Year
2 Year
Instrument
4 Year
4 Year
4 Year
AVT™ Valve
4 Year
4 Year
n/a
PVT™ Valve
n/a
n/a
2 Year

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