DK790-XEC
LCD Digital Panel Meters
Specifications Installation and Operating Instructions
4½ Digit LCD with Loop Powered Board
FEATURES
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SPECIFICATIONS
DISPLAY
Digits:
Type:
Backlighting:
Polarity:
Annunciators:
Decimal Points:
Overrange:
INPUTS
Ranges:
Configuration:
Impedance:
PERFORMANCE
Accuracy:
Conversion Rate:
Normal Mode Rejection:
Common Mode Range:
Common Mode Rej.:
Adjustments:
Warmup:
Temperature Coeff.:
ENVIRONMENT
Operating Range:
Storage Range:
POWER SUPPLY
Optional Backlight:
MOUNTING
CONNECTION
Low-cost, high-performance replacement for many OEM DPMs
Optional RED, GREEN, AMBER or POS GREEN backlit LCD
Snap-in bezel mount eliminates mounting hardware
Resistant to RF and EMI
4½ digits with high-contrast LCD
4-20 mA loop powered input
User selectable, displayed engineering units
Clamp and gasket for NEMA applications
ORDERING INFO
PART NUMBER
4 ½ digits (±19999 counts)
0.45" (11.4 mm) 7 segment LCD
Optional Red Negative
(red numbers/black background)
Optional Green Negative
(green numbers/black background)
Optional Amber Negative
(amber numbers/black background)
Optional Green Positive
(black numbers/green background)
automatic, “-” displayed
°F, °C, PSI, % , user selectable
4 position, user selectable
four lower order digits blank for
inputs >19999 & < -19999
BACKLIGHT COLOR
DK790-XEC........................... NO BACKLIGHT........................................NONE
DK791-XEC............................. NEG AMBER........................................ 24VDC
DK794-XEC................................NEG RED........................................... 24VDC
DK793-XEC..............................NEG GREEN......................................... 24VDC
DK795-XEC..............................POS GREEN......................................... 24VDC
ACCESSORIES
PW2-24.................................... Regulated 120V AC to 24V DC Power Supply
PW1.0..........................................................24V AC to adjustable DC output
PW1.5..........................................................24V AC to adjustable DC output
CVC...............................................................................................Calibrator
4-20 mA DC
bipolar differential
300Ω nominal
±(0.1% fs + 2 count)
3 per second
>30 dB @ 60 Hz
±1 VDC max
>86 dB
span (gain) and zero (offset)
10 minutes typical
± 100 ppm per °C typical
0 to 50 °C
-10 to 70 °C
powered by the milliamp control loop
24 VDC at 35 mA typical
snap-in bezel mount or clamp and gasket
2 screw terminal (4 with backlight)
C-TON Industries
BACKLIGHT POWER
• PO Box 11746 • Memphis, TN 38111 • USA (603) 471-0158 • email: info@ctonindustries.com
DK790-XEC
LCD Digital Panel Meters
Specifications Installation and Operating Instructions
4½ Digit LCD with Loop Powered Board
DIMENSIONS
JUMPER SELECTION & WIRING
1. DECIMAL SELECTION
J7 J6 J5 J4
19999
1999.9
199.99
2. J1, J2, J3 SELECTION
IF: MIN DISPLAY IS = 0 or
MIN DISPLAY IS > 0 and
MAX DISPLAY ÷ MIN DISPLAY ≥ 5
J3 J2 J1
3. SPAN JUMPER SECTION:
SPAN FACTOR
SET JUMPERS
0-12
L
10-22
M
22-32
H
IF:
MIN DISPLAY IS ≤ 0 or
MIN DISPLAY IS > 0 and MAX DISPLAY ÷ MIN DISPLAY > 5
THEN: SPAN FACTOR =
2.5 (MAX DISPLAY - MIN DISPLAY)
4000 + 0.02 (MIN DISPLAY) - 0.004
(MAX DISPLAY)
IF:
MIN DISPLAY IS > 0 and MAX DISPLAY ÷ MIN DISPLAY ≤ 5
THEN: SPAN FACTOR =
MAX DISPLAY - MIN DISPLAY
1600
IF: MIN DISPLAY IS > 0 and
MAX DISPLAY ÷ MIN DISPLAY < 5
J3 J2 J1
19.999
1.9999
°F
°C
PSI
%
4. ZERO (OFFSET) JUMPER SELECTION: ZERO FACTOR SET JUMPERS
0-3994
H
3320-7314
M
6640-10634
L
IF:
MIN DISPLAY IS ≤ 0 or
MIN DISPLAY IS > 0 and MAX DISPLAY ÷ MIN DISPLAY > 5
THEN: ZERO FACTOR = (250000 + MIN DISPLAY) X (83834) - 73200
(250000 + 400 (SPAN FACTOR))
IF:
MIN DISPLAY IS > 0 and MAX DISPLAY ÷ MIN DISPLAY≤ 5
THEN: ZERO FACTOR = 10634 - (MIN DISPLAY -400 (SPAN FACTOR) X 83834
250000
WIRING
(lower)
C-TON Industries
• PO Box 11746 • Memphis, TN 38111 • USA (603) 471-0158 • email: info@ctonindustries.com
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