Page : 9
9.- TEMPERATURE RANGES
± 0.5 %
C
B
A
PT1. ZERO adjust
COMPONENTS SIDE
PT2. SPAN adjust.
The control board contains the Analog/Digital con-
verter, the Signal Conditioner and other compo-
nents.
The function of the Signal Conditioner is amplifier
and make the linearisation of the signal received
from the sensor and there is one Signal Conditioner
for every model of RTD or Thermocouple sensor.
The trimmers for Span and Zero are also located on
the Signal Conditioner. Use these trimmers only for
calibration procedure.
Signal conditioner
Components side.
Components view
ALL MODELS
0°C to + 50°C
32°F to 122°F
Control board. Horizontal position in instruments serie LDP-124
Vertical position in instruments serie LDP-144
JG JE JF
Decimal Point
Selector
JG = XXX.X
JE = X.XXX
JF = XX.XX
10.1.- SIGNAL CONDITIONER FOR RTD SENSOR
C
B
A
PT1
ZERO adjust.
COMPONENTS SIDE
Signal
Instrument
Conditioner
Reference
Reference
MB-21
LDP-1X4-M1 *
MB-21-F2
LDP-1X4-M2
MB-21-F3
LDP-1X4-M3 *
PT2 SPAN adjust.
All jumpers on Decimal Point Selector must be opened.
10.2.- SIGNAL CONDITIONERS FOR THERMOCOUPLE SENSORS
9.1.- MODEL M1, M2 & M3. RTD SENSOR (PT-100)
TEMPERATURE ACCURACY MODEL TEMPERATURE ACCURACY RESOLUTION
RANGE
RANGE
Signal
Instrument
Conditioner Reference
Reference
MB-22 or 22F LDP-1X4-J1,J2
MB-23 or 23F LDP-1X4-K1,K2
MB-24 or 24F LDP-1X4-T1,T2
MB-25 or 25F LDP-1X4-E1,E2
MB-26 or 26F LDP-1X4-S1,S2
MB-27 or 27F LDP-1X4-R1,R2
MB-28
LDP-1X4-L1
MODEL
TEMPERATURE
ACCURACY
RESOLUTION MAXIMUM
RANGE
(±1 COUNT)
COMPENSATION
M1
- 100.0 to + 650.0 °C
0.1 °C
M2
-300 to 1526 °F
1 °F
10
Ω
M3
- 200.0 to 999.9 °F
0.1 °F
Allowable error in negative range due to the lead wire resistance : 0.2°C/
Ω
or 0.4°F/
Ω
9.2.- MODELS: J1,J2,K1,K2,T1,T2, E1,E2,S1,S2,R1,R2 & L1. THERMOCOUPLE SENSORS
10.- SIGNAL CONDITIONERS.
± 1 count
± 1 count
MODEL
J 1
K1
T1
E1
S1
R 1
L1
± 0.5 %
± 0.5 %
± 0.5 %
± 0.5 %
± 0.5 %
± 0.2 %
± 0.2 %
± 0.2 %
± 0.1 %
± 0.3 %
± 0.3 %
± 1 %
J 2
K2
T2
E2
S2
R 2
1°C / 1°F
1°C / 1°F
1°C / 1°F
1°C / 1°F
1°C / 1°F
1°C / 1°F
1°C
- 50 to + 600°C
0 to + 1250°C
+ 1000 to + 1750°C
- 50 to + 400°C
0 to + 650°C
+ 970 to + 1750°C
- 50 to + 600°C
- 40 to 1000°F
32 to 2250°F
- 40 to 750°F
32 to 1200°F
1775 to 3150°F
1850 to 3150°F
AMBIENT TEMP.
COMPENSATION
± 0.2 %
± 0.4 %
± 0.4 %
* Jumper JG located on Decimal Point Selector must be closed.
