THERMATEL
TD1 & TD2
Switches
Flow / Level / Interface Detection
General Description:
The TD1/TD2 Thermatel switch is extremely versatile providing
flow/level/interface detection in a single unit. Both liquid and gas flow
detection is obtainable. The TD1 is available with 24 VDC power with the
TD2 available in either an AC or DC version. The TD2 also provides LED
indication through an optional glass window, mA output for diagnostics or
repeatable flow/level indication, optional hermetically sealed relay, time
delay adjustment, and remote electronics. Continuous diagnostics on both
units provides assurance that the switch is operating properly.
L L L L L L L L L L L L
Features:
Continuous diagnostics
Temperature compensation
Narrow hysteresis
Operating temperatures to +850° F (+450° C)
Integral or remote electronics
8-amp DPDT relay with optional hermetically sealed relay
Low flow sensing capabilities
Wide selection of sensors – see page 10
NACE construction available
No moving parts
Probes available in 316 stainless steel, Hastelloy
®
C, and Monel
®
Hygienic design available
Applications:
Flow:
Pump protection, relief valve monitoring, low flow/high flow indication,
cooling air/water, exhaust flow, analyzer lines, lubrication systems
Level:
High level/low level/interface detection, high viscosity liquids, slurries,
high pressure, high temperature, air/foam and foam/liquid detection,
corrosive environments
APPROVALS
S P E C I F I C AT I O N S
Input Power
TD1:
19.2 to 28.8 VDC
TD2:
100 to 264 VAC, 50–60 Hz or 19.2 to 28.8 VDC
Power Consumption
TD1:
3.5 watts at 24 VDC, 4.5 watts at 30 VDC
TD2:
4 watts at 24 VDC, 4.5 watts at 30 VDC, 5 watts at 100 to 264 VAC
Power to Probe
Electronics
Less than 1 watt
TD1:
Integral
TD2:
Integral or remote
Relay
Set Point Range
8-amp DPDT — TD2 has optional hermetically sealed relay
Water:
0.01 to 5 fps (0.003 to 1.5 m/s)
Air:
0.1 to 500 sfps (0.3 to 150 nm/s)
Process Temperature
Process Pressure
-100° to +850° F (-73° to +454° C)
Probe dependent — to 6000 psig (414 bar)
8
MAGNETROL [ MAGNETROL INTERNATIONAL, INC. ]
