Myron L 729II - Manual (Page 31)

C. TEMPERATURE MODULE
(Digital Models only)
-TP Temperature Module ordered with Monitor/controller.
TPO Temperature Module ordered separately includes label
# LTEMP.
Requires; Separate three (3) wire 1000Ω RTD
temperature sensor.
NOTE: OEM models require an additional display harness, part
number TPMH. See OEM Installation.
1. DESCRIPTION
The Temperature Module (TPO) gives the Monitor/controller more
flexibility for the user by being in the same package.
The Temperature Module is driven by the main display output and
is very simple to install.
The Temperature Module and Temperature Sensor SYSTEM
utilize a unique 3 wire technique by which errors are greatly
reduced.
The Temperature Module has its own 0-5VDC output.
TPO kit comes with all items necessary to install and operate: TP
Module; front panel harness with switch, bezel, cap and two O-
rings (006 & 008); and TEMPERATURE label (# LTEMP).
An alarm/control function may be added to the TP by ordering the
THO harness kit.
Specifications
±200°C (±200°F Special Order Only)
Accuracy: ±0.2 w/ICE ±0.5 w/out ICE
Display Resolution = 0.1
Output: 0-5VDC Connections - 2
Sensor Input: Separate 1000Ω RTD temperature sensor.
Connections: Three (3) wire for increased accuracy over long
distances).
Calibration
Zero and Full Scale, FS (0 & 5VDC): Factory Set Simple pots
Display (CAL): Full Scale, FS (199.9) Factory Set Simple pot
Operates on safe ±5VDC supplied by the Main CB.
2. INSTALLATION
Briefly -
The Temperature Module replaces the plastic display retainer
plate attached to the front panel.
The display harness plugs into the Temperature Module instead of
the display.
The sensor leads are connected to the Temperature Module. See
figure III.C.1.
The display switch is installed in the upper front panel as shown in
figure III.C.4.
A “TEMPERATURE” label is added to upper front panel next to the
Display Select switch as shown in figure III.C.4.
WARNING: BEFORE STARTING, IF MONITOR/
CONTROLLER IS INSTALLED, ENSURE THE POWER
IS OFF. FAILURE TO DO SO COULD CAUSE DAMAGE
TO THE INSTRUMENT, AND COULD BE HARMFUL OR
FATAL TO PERSONNEL. ONLY QUALIFIED
PERSONNEL SHOULD INSTALL OR SERVICE
ELECTRICAL EQUIPMENT.
Physical
If the front panel has all ready been removed from the enclosure
skip to 3.
1. Using a standard slot screwdriver remove the
screws on the front panel.
2. Carefully wiggle the front panel to loosen the gasket and
pull gently toward you. Do not pull more than
about 8 inches/20CM or you could damage the wiring
harness.
3. Turn the front panel around so that the back side is
facing you.
4. Using a standard slot screwdriver remove the four (4)
screws holding the plastic display retainer plate to the
front panel. When the screws have been removed, the
plastic display retainer plate and the display will be
free from the front panel.
27
Figure III.C.1
DISPLAY SWITCH
(UPPER FRONT PANEL)
TEMP
CONTRO
L
FS ZERO DIS SP2 HYS2
DISPLAY CONNECTION
DISPLAY
SELECT
TEMP
SENSOR
0-5VDC
OUTPUT (-)
(+)
BRN
BLU
+
-
0- 5VDC
SPC
TEMP
CONTROL
HARNESS
TEMPERATURE
SENSOR INPUT
Orange
Blue
Brown
RECONNECT
DISPLAY
HARNESS
HERE
DISPLAY IS ON THE
BACK SIDE OF THE
TEMPERATURE
MODULE
JUMPER
OR
INC
INC
DEC DEC
TP/TPO - TEMPERATURE MODULE
BR BL
OR
-
+
DISPLAY
!
CAUTION - READ FOLLOWING CAREFULLY