21
54-610 Thermatel Model TD1/TD2 Flow Level Switch
3.9 Specifications
3.9.1 Performance
Supply Voltage
TD1 19.2 to 28.8 VDC
TD2 19.2 to 28.8 VDC or 100 to 264 VAC
, 50–60 Hz
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
Less than 1 Watt
Output Relay
TD1 Electronics:
DPDT, 8 Amp, 120 VAC, 250 VAC
8 Amp at 30 VDC, 0.5 Amp at 125 VDC
TD2 Electronics:
DPDT, 8 Amp at 120 VAC, 250 VAC
8 Amp at 30 VDC, 0.5 Amp at 125 VDC or
Hermetically Sealed DPDT 1 Amp at 28 VDC, 0.5 Amp at 125 VDC
Ambient Temperature
Electronics:
-40° to +158° F (-40° to +70° C)
Storage Temperature
Electronics:
-58° to +170° F (-50° to +76° C)
Operating Temperature
Sensor:
-100° to +400° F (-73° to +200° C)
High Temperature Sensor
-100° to +850° F (-73° to +454° C)
Response Time
1–10 seconds (typical – dependent upon sensor type, application,
and set point adjustment)
Set Point Range
Water:
0.01 to 5.0 fps (0.003 to 1.5 m/s) (spherical tip and twin tip sensors)
0.01 to 1.0 fps (0.003 to 0.3 m/s) (HTHP, Hastelloy, Monel sensors)
Air:
0.1 to 500 fps (0.3 to 150 m/s)
Time Delay (TD2 only)
0–100 seconds adjustable (time delay in addition to sensor response)
Repeatability
<1% at constant temperature
Enclosure Material
Cast aluminum A356 containing less than 0.2% copper or
316 stainless steel
Use a probe with heat extension or remote electronics for process temperatures greater than +250° F (+120° C)
