Omega Products DP41-RTD User Manual
1
⁄8 DIN HIGH-PERFORMANCE METERS
ALARM/CONTROL CAPABILITIES
STRAIN GAGE, PROCESS VOLTAGE AND CURRENT, TEMPERATURE
DP41 Series
DP41-S strain
meter shown
actual size.
All Units Feature:
U 5-Year Warranty
U 6-Digit Display
U Min/Max Storage
U 4 Isolated Open-Collector
Outputs
U NEMA 4 (IP65) Front Panel
U 12 Readings per Second
U Alarm/Control Capabilities
U Smart Filtering Detects
the Difference Between a
Spike or Process Change
(Patent Applied for)
U Peak and Valley Detection
U Digital Tare
U Easy Front-Panel
Programming
U Optional BCD Output
U Optional Analog Output
U Optional RS232/RS485
Communications
U
Optional Mechanical Relays
Thermocouple Input:
U 0.01° Resolution
U 0.2°C Accuracy
U 9 Thermocouple Types
U °C/°F/K Units
U Uses Complete NIST
Calibration Tables
RTD Input:
U 0.01° Resolution
U 0.2°C Accuracy
U 2-, 3-, or 4-Wire
U 385 and 392 Pt Curves
Voltage/Current Inputs:
U ±0.005% Rdg Accuracy
U 10 User-Selectable
Voltage or 4 to 20/
0 to 20 mA Input Ranges
U Fully Scalable Display Up
to 500,000 Counts
U 1.5 to 11 Vdc or 24 Vdc
Sensor Excitation
U Adjustable Decimal Point
The OMEGA® DP41 Series of digital
panel meter/controllers has set the
world standard for accuracy and
quality in industrial instrumentation.
These meters can measure a broad
spectrum of DC voltage and current
ranges as well as inputs from
9 thermocouple types and from
most RTDs, pressure transducers,
load cells, strain gages, and
potentiometers. Models include the
DP41-W, a legal-for-trade, NTEPcertified strain meter with enhanced
features, and the DP41-U, which
covers all the input types.
The DP41 displays feature 14-segment LED characters, which greatly improves
alphanumeric representations. The 7-segment LED characters found on most
instruments are adequate for presenting
numbers, but not
letters. Words are
easier to read with
the 14-segment
LED characters on
the DP41, which,
in turn, simplifies
operating and
programming.
D-29
14-segment display
14-segment LED
7-segment display
7-segment LED
Standard features include 6-digit
display; 5 front-panel pushbutton
keys; 4 open-collector outputs; and
alarm/control, BCD, and analog
outputs. Configurable analog output
ranges are 0 to 20 mA, 4 to 20 mA,
0 to 5 Vdc, and 0 to 10 Vdc.
On-board excitation allows these
meters to power virtually any sensor
or transmitter, and 4 setpoints give
the user numerous control/alarm
possibilities. Setpoint configurations
include active above or below;
latching or non-latching; and high
deviation, low deviation, or band
deviation.
With the RS232/485 serial
communications option, the user
can set the display parameters
and read the current, max, and
min values remotely. The DP40-R
board option provides dual 7 A
mechanical relays, activated by the
selected setpoint.
Red LED display standard. Also
available with green LED at no charge.
HIGH-PERFORMANCE METERS
SPECIFICATIONS
Accuracy: ±0.005% rdg
Span Temperature Coefficient: ±20 ppm
Step Response: 1 s to 99.9%
Warm-Up to Rated Accuracy: 50 minutes
Operating Environment: 0 to 50°C
(32 to 122°F); 95% RH, non-condensing
Storage Temperature:
-40 to 85°C (-40 to 185°F)
Power: 115 or 230 Vac, 49 to 400 Hz;
10 to 32 Vdc
Power Consumption: 6 W nom., 10 W max
Normal-Mode Rejection: 60 dB
Common-Mode Rejection: 120 dB
Common-Mode Voltage:
1500 Vp per HV test
Resolution: 15-bit
Conversion: Dual-slope technique
Reading Rate: 3/s or 13/s, 60 Hz;
3/s or 12/s, 50 Hz
Display: Red or green 6-digit, 14-segment,
13.7 mm (0.54") high; 4 alarm indicators
Dimensions: 48 H x 96 W x 165 mm D
(1.89 x 3.78 x 6.5")
Panel Cutout: 45 H x 92 mm W
(1.772 x 3.622"); 1⁄8 DIN
Weight: 574 g (1.27 lb)
Setpoint Outputs: 4 isolated open
collector; rated 150 mA at 1V sink,
30V open
BCD Output: Isolated, tri-state,
TTL/CMOS compatible; external
5V supply required for isolated;
internal 5V supply for non-isolated
Dual Relays: Form “C”, 7 A @ 30 Vdc
or 230 Vac
4-Relay Option: Dual 7 A relays
and dual 1 A relays
Analog Output: 0 to 5V/1 to 5V/
0 to 10V/0 to 20 mA/4 to 20 mA, user
selectable; 354 Vp isolation; 15-bit
resolution; 0.1% accuracy; 50 ms
step response
RS232 Communications:
300/600/1200/2400/4800/9600/
19.2K baud; RJ11 4-wire connection;
programmable to transmit current
display, alarm status, min/max, actual
measured input value and status
RS485 Communications:
300/600/1200/2400/4800/9600/
19.2K baud; RJ12 6-wire connection;
addressable from 0 to 199
Voltage Input Ranges: 0 to 100 mV,
0 to 1V, 0 to 5V, 1 to 5V, 0 to 10V,
0 to 100V, ±50 mV, ±500 mV, ±5V, ±50V
Current Input Ranges: 0 to 20 mA,
4 to 20 mA
Input Configuration: Single-ended
Polarity: Unipolar/bipolar, programmable
Span Adjustment: 0.00001 to 500,000,
programmable
Offset Adjustment: 0 to 999,999 or
0 to -99,999, programmable
Thermocouple Input Types:
J, K, T, E, R, S, B, N, J DIN
RTD Input: Any 6 Ω to 6 kΩ NIST or
DIN platinum and any linear RTD
RTD Connection: 2-, 3- or 4-wire
Sensor Break Protection: Up-scale or
down-scale, programmable
Sensor Excitation: 10 V at 30 mA;
24V at 25 mA
The DP41 thermocouple meter offers very high accuracy ensured by an
advanced (patent applied for) thermocouple linearizing s
ystem. Accuracy
for most thermocouple types is 0.2°C (3.6ºF). The meter is front-panel
programmable for any of 9 thermocouple types. The DP41 RTD input meter
is programmable for any 6 to 6000 Ω DIN or NIST platinum RTD. It provides
a precision ultra-low constant current excitation to minimize self-heating
errors and maximize stability.
INPUT TYPE RANGE, °C RANGE, °F ACCURACY
Iron-constantan -210 to 760 -346 to 1400 0.2°C/0.3°F
®
CHROMEGA
Copper-constantan -270 to 400 -454 to 752 0.2°C/0.3°F
CHROMEGA
Pt/Rh -50 to 1768 -58 to 3214 0.2°C/0.3F
/
Pt/30% Rh-Pt/6° Rh 100 to 1820 212 to 3300 0.3°C/0.5F
OMEGALLOY
Iron-constantan -200 to 900 -328 to 1652 0.6°C/1.0F
All curves -200 to 850 -328 to 1562 0.2°C/0.3F
INPUT TYPE RANGE, °C RANGE, °F RANGE, K ACCURACY
RTD 1 10 Ω copper -200 to 200 -328 to 392 73.2 to 473.2
RTD 2
RTD 3
100 Ω Pt 0.00385
100 Ω Pt 0.00392
DP41-T and DP41-RTD shown
smaller than actual size.
-ALOMEGA® -270 to 1372 -454 to 2500 0.2°C/0.3°F
®
-constantan -270 to 1000 -454 to 1832 0.2°C/0.3°F
®
-270 to 1300 -454 to 2372 0.2°C/0.3F
1.0°C/2.0°F/1.0 K
200 to 900 -328 to 1652 73.2 to 1173.2
-200 to 850 -328 to 1562 73.2 to 1123.2
Thermocouple and RTD
probes sold separately. Visit
omega.com/temperature,
for the complete selection
of temperature products
available from OMEGA
0.2°C/0.3°F/0.2 K
0.2°C/0.3°F/0.2 K
INSTRUMENTATION
D
®
D-30
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