9
54-610 Thermatel
®
Model TD1/TD2 Flow Level Switch
2.5
Setup
2.5.1 Switch Settings
The TD1 and TD2 have a series of switches which may
require field adjustment depending upon the application.
Switch position for the TD1 is shown in Figure 9 and
switch position of the TD2 is shown in Figure 10.
The switch settings are set at MAGNETROL during
setup. Changes in the positions may be required in the
field depending upon the application. There is a tag wired
onto the switch which indicates the default settings. See
Figure 11. Use the following table for recommended
switch settings.
For factory calibrated devices, the switch setup and calibra-
tion is completed by MAGNETROL for optimal perform-
ance. The dip-switch settings and/or potentiometers
should only be adjusted for troubleshooting purposes if the
factory calibration was not sufficient.
Switch
Purpose
Options
Heater
Control heat to sensor See sensor table below
Default is “+”
Temperature
Compensation
Reduce set point drift
See sensor table below
Default is “on”
Media
Select gas or liquid
media type
See sensor table below
Default is liquid “L”
Use gas “G” position
only for gas flow
applications
Range
Expand sensitivity
Standard “S” position
recommended
Default is “S”
Sensor
Application
Heater
TempComp
Media
Spherical Tip
(TXA, TXB)
Liquid Flow
+
on
L
Gas Flow
+*
on
G
Level
-
on
L
Twin Tip
(TXC, TXD)
Liquid Flow
+
on
L
Gas Flow
+*
on
G
Level
-
on
L
HTHP
(TXH)
Liquid Flow
+
on
L
Gas Flow
+
on
L**
Level
-
on
L
Flow Body
(TXL)
Liquid Flow
+
on
L
Gas Flow
+
on
L**
Fail-safe
HL = High Level Fail-safe
LL = Low Level Fail-safe
Fault detection
Should be on (some applications may require
that this be turned off, see Section 3.5).
Four-position Switch
Two-position Switch
Sensor
Figure 9
TD1
Figure 10
TD2
Figure 11
TD1/TD2 Setup Tag
POWER
HEATER
TEMP COMP
MEDIA
RANGE
FAILSAFE
FAULT
O
F
F
G
A
S E
O
N
L S
I
L
L
O
N
Q
H
L
O
F
F
ALARM
MODEL TD1
NC
C
NO
NC
C
NO
TIME
DELAY
ALARM
MODEL TD2
NC
C
NO
NC
C
NO
TP2
TP1
L2
L1
* Applications at no flow or low flow should be set with heater to “-”.
** For best results use “L” setting for HTHP probe and low flow body.
