
D-64a
D
INSTRUMENTATION
Large Displays 4- or 6-Digit
2.3" and 4" High
General Specifications:
Display
Type: 4-digit
Digit Height:
2.3" (57 mm) or 4" (100 mm)
Symbols:
-999999 to 999999
(6-digit model)
Polarity: Minus only (-)
Overrange: Display flashing
Decimal Point: Jumper selectable
The LDP Series large displays have
high output red or green displays for
easy viewing in most applications.
The LDP-12x has 2.3" digits which
can be seen from 50' away, and the
LDP-14x has 4" digits which can be
seen from 200'.
The rugged extruded aluminum
cases can be either free standing,
mounted in a panel or on a flat
surface (optional wall mount
bracket required).
⻬ Bright 57 mm (2.3")
or 100 mm (4") 7Segment Displays
with Minus Sign
⻬ Red or Green for
Easy Viewing
⻬ Very High Accuracy,
0.1% FS
⻬ Rugged Aluminum Case
Can Be Free Standing,
Panel or Wall Mounted
⻬ Sealed Front Bezel
Provides IP65 Front
(NEMA-4) Protection
⻬ 115 or 220 Vac Models
Available
Models:
⻬ Process DC Voltage
0-1 V to 0-200 Vdc
⻬ Process DC Current
0-1 mA to 0-50 mA
⻬ Thermocouple J, K,
T, E, R, S & J DIN
⻬ RTD α = 0.00385,
0.1 or 1°
⻬ Ratemeters 4 or 6 Digits
⻬ Totalizers up/down/
Quadrature Frequency
Meters
Read Rate: 2.5/sec
Environmental
Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature:
-20 to 85°C (-4 to 185°F)
Relative Humidity:
0 to 85% non-condensing
Protection: IP65 (NEMA-4)
Mechanical
Case Material: Aluminum extrusion
Finish: Black anodized
Electrical
Standard Power: 115 Vac ±10%
50/60 Hz (optional 230 Vac)
Power:
4 & 6 digit/2.3" = 6 VA max
4 & 6 digit/4" = 12 VA max
Weight:
4 digit/2.3" = 2.3 Kg (5 lb)
4 digit/4" = 5 Kg (11 lb)
6 digit/2.3" = 2.7 Kg (6 lb)
6 digit/4" = 5.7 Kg (12.5 lb)
480 mm (18.9")
For Temperature, Process,
Pulse Input
LDP1 Series
Starts at
$
845

Large Temperature Displays
D-64b
To Order:
(Specify Model Number)
Model Number Price 2" Price 4" Type Range
100 Ω RTD Input 4-Digit Red†Display
LDP-1(*)4-M1-R-1 $845 $1225 PT100 -185.0 to 830.0°C
LDP-1(*)4-M2-R-1 845 1225 PT100 -300 to 1526°F
LDP-1(*)4-M3-R-1 845 1225 PT100 -300.0 to 999.9°F
Specifications:
Thermocouple Models
Cold junction compensation; sensor
break detection; 1-degree resolution
RTD (Pt 100)
2- or 3-wire connections; sensor
break detection; automatic lead wire
compensation to 10 Ω
To Order:
(Specify Model Number)
Model Number Price 2" Price 4" Type Range
Thermocouple Input 4-Digit Red†Display
LDP-1(*)4-J1-R-1 $845 $1225 J -50 to 600°C
LDP-1(*)4-J2-R-1 845 1225 J -40 to 1000°F
LDP-1(*)4-K1-R-1 845 1225 K 0 to 1250°C
LDP-1(*)4-K2-R-1 845 1225 K 32 to 2250°F
LDP-1(*)4-T1-R-1 845 1225 T -50 to 400°C
LDP-1(*)4-T2-R-1 845 1225 T -40 to 750°F
LDP-1(*)4-E1-R-1 845 1225 E 0 to 650°C
LDP-1(*)4-E2-R-1 845 1225 E 32 to 1200°F
LDP-1(*)4-R1-R-1 845 1225 R 1000 to 1750°C
LDP-1(*)4-R2-R-1 845 1225 R 1800 to 3150°F
LDP-1(*)4-S1-R-1 845 1225 S 970 to 1750°C
LDP-1(*)4-S2-R-1 845 1225 S 1775 to 3150°F
Complete with owner’s manual, power and signal connectors, and panel mounting hardware
† To order green display, change “R” to “G” in model number; same price.
To order 230 Vac version, replace last ‘1’ in Model Number with ‘0’; same price
(*) Add “2” for 2.3-inch display or “4” for 4-inch display
Ordering Examples: LDP-124-M1-R-1 is a 2", 4-digit red RTD thermometer with a range of
-185 to 830.0°C, $845. LDP-144-M2-G-1 is a 4", 4-digit green RTD thermometer with a range
of -300 to 1526°F, $1225.
Complete with owner’s manual, power and signal connectors, and panel mounting hardware
† To order green display, change “R” to “G” in model number; same price.
To order 230 Vac version, replace last “1” in Model Number with “0”; same price.
(*) Indicate “2” for 2.3-inch display or “4” for 4-inch display.
Ordering Examples: LDP-124-J1-R-1 is a 2", 4-digit red Type J thermocouple thermometer
with range -50 to 600°C, $845. LDP-144-T2-G-1 is a 4", 4-digit green Type T thermocouple
thermometer with range of -40 to 750°F, $1225.
Aluminum
Back Plate
Anti-Glare Lens
112 (4.41)
120
(4.75)
264
(10.4)
Aluminum
Back Plate
Anti-Glare Lens
112 (4.41)
180
(7.09)
480
(18.9
)
Dimensions in mm (inches)
2.3" Display
4"Display
LDP-1 Dimensions
Panel Cut-Out
Panel Cut-Out
Dimensions in mm (in)
Option Price Description
LDP-18-WMB $55 Wall mounting bracket
Accessory
(available with all models)
E
D
Panel Cut-Out
Digits Height D E
4 57 (2.3) 256 (10.07) 112 (4.4)
4 100 (4) 472 (18.58) 172 (6.77)
6 57 (2.3) 376 (14.8) 112 (4.4)
6 100 (4) 680 (26.77) 172 (6.77)
Note: Add 27 mm (1.1 in) to depth for
power connector
264 mm (10.4")

D-64c
D
INSTRUMENTATION
Option Price Description
LDP-18-WMB $55 Wall mounting bracket
Large Process and Pulse Input Displays
To Order:
(Specify Model Number)
Model Number Price 2" Price 4" Type
Rate/Totalizer 4-Digit Red Display
LDP-1(*)4-FF-R-1 $845 $1225 Ratemeter
LDP-1(*)4-F1-R-1 845 1225 Totalizer w/ inhibit function
LDP-1(*)4-F2-R-1 845 1225 Tot w/ up/down control
LDP-1(*)4-F3-R-1 845 1225 Tot w/ up/down, sep. inputs
LDP-1(*)4-F5-R-1 845 1225 Tot w/ up/down, quatr control
LDP-1(*)4-F6-R-1 845 1225 Tot w/ up/down, quatr control X4
Rate/Totalizer 6-Digit Red Display
LDP-1(*)6-FF-R-1 $900 $1535 Ratemeter
LDP-1(*)6-F1-R-1 900 1535 Totalizer w/ inhibit function
LDP-1(*)6-F2-R-1 900 1535 Tot w/ up/down control
LDP-1(*)6-F3-R-1 900 1535 Tot w/ up/down, sep. inputs
LDP-1(*)6-F5-R-1 900 1535 Tot w/ up/down, quatr control
LDP-1(*)6-F6-R-1 900 1535 Tot w/ up/down, quatr control X4
Rate/Totalizer Programming Keyboard (1 Required)
LDP-TOT-KBD $246 Programming keyboard
To Order:
(Specify Model Number)
Model Number Price 2" Price 4" Type
Process Voltage/Current Input 4-Digit Red Display
LDP-1(*)4-P1-R-1 $845 $1225 Voltage: 0-1, 0-5, 1-5 Vdc
Current: 0-1, 0-5, 1-5, 0-20, 4-20,
0-50, 10-50 mA dc
LDP-1(*)4-P2-R-1 845 1225 Voltage: 0-1, 0-10, 0-100, 0-200 Vdc
Process Voltage/ Current
Specifications
Process Models Transducer Excitation:
10 to 24 Vdc, 50 mA max
Ranges: Fixed ranges jumper selectable plus fully scalable within any range
Display: Fully scalable to engineering units plus zero offset
Specifications:
Signal Inputs: (jumper selectable)
PNP, NPN, NAMUR & Switches
Max Input Voltage: +28 V
Pick-up: (Chan 1 only)
Sensitivity: 150 mV
Hysteresis: 100 mV
Impedance: 26.5 kΩ @ 60 Hz
Max Input voltage ± 50 V
Input Trigger:
Logic Level 1 >3.75 Vdc >7.5 Vdc
Logic Level 0 <1.5 Vdc <5.5 Vdc
Frequency Inputs: (jumper selectable)
Two ranges, 0.03 Hz to 100 Hz or
to 10 kHz
Excitation Voltage: +15 Vdc @100 mA
Complete with owner’s manual, power and signal connectors, and panel mounting hardware
† To order green display, change “R” to “G” in model number; same price.
To order 230 Vac version, replace last “1” in Model Number with “0”; same price.
(*) Input “2” for 2.3-inch display or “4” for 4-inch display
Ordering Examples: LDP-124-FF-R-1 is a 2", 4-digit red ratemeter, plus LDP-TOT-KBD,
programming keyboard, $845 + 246 = $1091. LDP-146-F3-G-1 is a 4", 6-digit green totalizer
with separate up and down inputs, plus LDP-TOT-KBD, programming keyboard,
$1535 + 246 = $1781.
Complete with owner’s manual, power and signal connectors, and panel mounting hardware
† To order green display, change “R” to “G” in model number; same price.
To order 230 Vac version, replace last “1” in Model Number with “0”; same price.
(*) Input “2” for 2.3-inch display or “4” for 4-inch display
Ordering Examples: LDP-124-P1-R-1 is a 2", 4-digit red low range process meter, $845.
LDP-144-P2-G-1 is a 4", 4-digit green high range process meter, $1225.
LDP-18-WMB, Mounting Bracket
for LDP-1 Series, $55.
Accessory
(available with all models)
Rate/Totalizer
480 mm (18.9")

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