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Temperature and process controller/meter


Temperature and process controller/meter | DP41-B

Temperature and process controller/meter

£430.00 DP41-B

5 year warranty CE
  • High accurancy Meter/controller with Universal Inputs: DC Voltage/Current, T/C, RTD, Strain, Millivolts
  • Accuracy: ±0.005% rdg
  • 6-Digit, 3-Colour LED Display
  • Up to 166 Readings Per Second
  • 10 Point Linearisation
  • 4 Isolated Open Collector Outputs Standard
  • Isolated Analogue Output Optional
  • Four Relay Outputs Optional
  • Optional Ethernet or RS-232/RS-485
  • IP66 Front Panel
Temperature & Process Meters, Timers and Counters - View related products


Click on this link if you need more information about Panel Meters.

The meters/controllers of the OMEGA DP41 series set the world standard for accuracy, performance and quality in digital panel meters. The all new DP41-B raises the bar even higher with accuracy of up to ±0.005% of reading, and up to 166 readings per second.

The versatile OMEGA DP41-B handles a broad spectrum of dc voltage and current ranges, nine thermocouple types, multiple RTD's, and signals from strain gauge transducers such as load cells and pressure transducers, as well as potentiometric inputs. It also features ten point linearisation of input signals, progammable by the user for custom applications.

Built-in excitation to power virtually any sensor or transmitter, and four isolated open collector outputs for control or alarms are standard. The big, bright, 6 digit patented LED display can be programmed to change colour between Red, Amber, and Green at any set point. The digits are 58% bigger than the typical display. Output options include: Isolated programmable analogue voltage or current and four relays.

With the Serial Communications option, the user can select from a push-button menu between RS-232, RS-485, and either a straightforward ASCII protocol or MODBUS. With OMEGA’S award-winning Ethernet/Internet option, the new DP41-B connects directly to an Ethernet network and transmits data in standard TCP/IP protocol. It is possible to monitor and control a process through a web browser from anywhere on the Internet.

Embedded Internet and Serial Communications
Featuring optional "Embedded Internet" (specify EI option) the
DP41-B connects directly to an Ethernet network and transmit data in standard TCP/IP packets, or even serve Web pages over a LAN or the Internet. The DP41-B is also available with serial communications. With the C24 option, the user can select from the push-button menu between RS-232, RS-422, and RS-485, with straightforward ASCII commands or MODBUS.

Programmable Colour Display
The OMEGA DP41-B has totally programmable colour displays. The display can be programmed to change colour at any set point or alarm point.

Red, Amber, and Green colour displays
U.S. Patent #6,243,021
Change Colour at any Setpoint
Change colour at any setpoint, red, amber, and green
For example, the instrument can be programmed to display the process value in GREEN during warm-up, switching to AMBER to signal the normal operating range, and in RED to signal an alarm condition. The changes in colour are quickly seen from a distance, and machine operators can intuitively react to changing conditions. The colours can be programmed to change back when the value drops back below the alarm point or to "latch" on until being reset by the operator.

The instrument can also be programmed to display only one unchanging colour: GREEN, AMBER, or RED. This is a useful way to let an operator identify, at a glance, process values in three separate locations, or to display three different measurements such as Temperature, Pressure, and Flow. DP41-B LED displays are considerably bigger, brighter and therefore more visible than displays for conventional instruments with the same DIN size.

Designed and manufactured in the USA, the innovative OMEGA® DP41-B meters feature an extended five (5) YEAR warranty at no extra charge. The
DP41-B packs a wealth of power and features using COB (chip-on-board) and SMT (surface mount technology) assembly techniques and automation. Every DP41-B instrument is thoroughly calibrated and tested at several stages throughout production. The DP41-B offers the highest accuracy for industrial instrumentation at 0.005% of reading. The analogue-to-digital conversion utilises patented algorithms and smart filtering.

Universal Inputs
The innovative
DP41-B offers the broadest selection of signal inputs available on one industrial instrument. The choices are easily selected from the menu with four front panel pushbuttons, or by serial or ethernet communications.

9 Thermocouple Types
DP41-B handles NINE (9) thermocouple types: K, J, T, E, R, S, B, N, and J DIN. The patented thermocouple linearisation algorithms employed in the DP41-B produce the highest standard of accuracy.

Most Accurate RTD Measurements
DP41-B works with the widest selection of RTD's and produces the most accurate RTD measurements. Handles 100 ohm Pt both 0.00385 and 0.00392 curves. Any 6 to 6000 ohm NIST or DIN Pt and any linear RTD (10 ohm Cu, etc.). A choice of 2-, 3- and 4-wire RTD connections ensures the absolute highest degree of accuracy.

Process Voltage and Current
OMEGA® DP41-B measures process voltage: 0-100 mV, 0-1 V, 0-10 V, 0-100 V (unipolar), ±50 mV, ±500 mV, ±5 V, ±50 V (bipolar) ranges, and process current: 0-20 mA or 4-20 mA.

Strain Gauge
The DP41-B measure inputs from Load Cells, Pressure Transducers, and most strain gauge sensors. Input can be linearised over 10 pts on ranges.
0-100 mV, 0-1 V, 0-10 V, 0-100 V (unipolar), ±50 mV, ±500 mV, ±5 V, ±50 V (bipolar), in addition to 0-20mA. Excitation for transducers of 10 Volt and 24 Volt is standard.

Analogue Output
The optional analogue output can be programmed within a range of 0-10 Vdc or 0-20 mA. It is selectable as a calibrated retransmission of the process value.

Built-in Excitation Standard
DP41-B comes standard with built-in excitation. You can capture and display both peak and valley levels of your input signals, an important feature for such applications as destructive and pressure testing. Five different kinds of excitation are available for sensors such as transmitters (24 Vdc @ 25 mA), strain gages (1.5 to 10 Vdc @ up to 60 mA max.), slide-wire potentiometers (1.25 Vdc @ 30 mA).
Back of DP41-B
The DP41-B features plug/removable connectors and a sturdy panel mounting sleeve with adjustable thumb nuts for easy secure installation

The DP41-B displays feature unique 9-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 unique 9-segment LED characters on the DP41-B, which makes operating and programming simpler and easier.

DP41-B 9 segment LED Digits
DP41-B 9 Segment LED Digits
(Bigger 17.3 mm Height)
Typical 7 segment LED digits
Typical 7 Segment LED Digits
(Smaller 13.7 mm Height)

Free Software
Free software is provided for easy set-up, configuration and data acquisition with the OMEGA® DP41-B.

Example SoftwareFree ActiveX Controls
Free ActiveX Controls are provided for the DP41-B
, making it easy to integrate the DP41-B with information systems using "ActiveX Containers" such as Microsoft Visual Basic and Microsoft Excel as well as with popular OLE and OPC compliant data acquisition, process control, and industrial automation software from OMEGA®, GE Fanuc, Intellution, Rockwell Automation, Object Automation, iconics, and Wonderware among others.

Free Factory Setup and Configuration
Make installing your
DP41-B meter or controller easier by ordering it preconfigured by the factory, at no extra charge. You specify the input types, scaling if applicable, set points, alarm points, etc. and we will program the instruments to your specific requirements in our calibration lab prior to shipment. For a checklist of factory setup parameters, please consult your OMEGA® applications engineers. The Factory Setup and configuration option requires the serial communication "-C24" option.

±0.005% rdg
Span Temperature Coefficient: ±20 ppm
Power: 90 to 240 Vac
Normal Mode Rejection: 60 dB
Common Mode Rejection: 120 dB
Common Mode Voltage: 1500 V peak per Hv test
Resolution: 24-bit
Reading Rate: 7 to 166 sample/sec.
Display: red/amber/green 6-digit, 9-segment colour changing, 17.3 mm
H x 10.2 mm W; 4 alarm indicators; ºC, ºF, & ºK
Thermocouple Temperature Compensation Connector Card
Thermocouple Temperature Compensation Connector Card for Thermocouple Input users
(See Order Guide)
Panel Cutout: 45 H x 92 mm W; 1/8 DIN
Setpoint Outputs: four, isolated open collector; rated 150 mA at 1 V sink, 30 V open
Four Relay Option: (2) 5 A & (2) 3 A relays Form-C, SPDT
Analogue Output: 0-5 V/1-5 V/ 0-10 V/ 0-20 mA/4-20 mA, user selectable; 354 Vp isolation; 14-bit resolution; 0.1% accuracy, 6 msec step response
Ethernet: Standards Compliance IEEE 802.3 10Base-T
RS-232/RS-422/RS-485/Telnet Simulation/Tunneling/MODBUS: selectable from menu; both ASCII and MODBUS
Voltage Input Ranges: 0-100 mV, 0-1 V, 0-10 V, 0-100 V, ±50 mV, ±500 mV, ±5 V, ±50 V
Current Input Ranges: 0-20 mA, 4-20 mA
Polarity: unipolar/bipolar, programmable
Thermocouple Input Types: J, K, T, E, R, S, B, N, J DIN
RTD Input: any 6 ohm to 6 kohm NIST or DIN platinum and any linear RTD
RTD Connection: 2-, 3- or 4-wire
Sensor Excitation: 10 V at 30 mA; 24 V at 25 mA.

Input Type
Range, °F
Range, °C
Range, °K
J Iron-Constantan
-346 to 1400°F
-210 to 760°C
63.2 to 1673.2°K
  K *1
-418 to 2282°F
-250 to 1250°C
23 to 977.2°K
-454 to 752°F
-270 to 400°C
3.2 to 673.2°K
-454 to 1832°F
-270 to 1000°C
3.2 to 1273.2°K
Pt / 13%Rh-Platinum
-58 to 3214°F
-50 to 1768°C
223.2 to 2041.2°K
Pt / 10%Rh Platinum
-58 to 3214°F
-50 to 1768°C
223.2 to 2041.2°K
Pt/30% Rh-Pt / 6% Rh
+212 to 3300°F
+100 to 1820°C
373.2 to 2093.2°K
-454 to 2372°F
-270 to 1300°C
3.2 to 1573.2°K
-328 to 1652°F
-200 to 900°C
73.2 to 1173.2°K
* Includes (All±) Maximum Linearisation Error
*1 - For K Type: Temperatures over 1250°C, accuracy will be 0.4°C/0.8°F/0.4°K
*2 - Registered Trademark of OMEGA ENGINEERING, INC.

*Accuracy (all±) includes maximum linearisation error
Input Type
Range, °F
Range, °C
Range, °K
RTD 1 - 10ohm Copper
-328 to 392°F
-200 to 200°C
73.2 to 473.2°K
RTD 2 - 0.00385 100ohm Pt
-328 to 1652°F
-200 to 900°C
73.2 to 1173.2°K
RTD 3 - 0.00392 100ohm Pt
-328 to 1562°F
-200 to 850°C
73.2 to 1123.2°K
Place Order(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/ Desc.
Examples of popular part numbers are shown in this table. See the Part Number Builder Below to select your exact configuration
Click to expand/minimize a list of what others bought with theDP41-B
DP41-B Star
Availability: In Stock
Universal Digital Meter
DP41-B-A Star
Availability: In Stock
Universal Digital Meter with Isolated Analogue Output
DP41-B-4R Star
Availability: 2 weeks
Universal Digital Meter with 4 Relay Outputs
DP41-B-4R-A Star
Availability: 2 weeks
Universal Digital Meter with 4 Relays and Isolated Analogue Output
DP41-B-4R-C24 Star
Availability: 2 weeks
Universal Digital Meter with 4 Relay Outputs and Serial Communications
DP41-B-C24 Star
Availability: In Stock
Universal Digital Meter with Serial Communications (RS232 & RS485)
Field Installable Options
DP40B-TC Star
Availability: 3 weeks
Thermocouple Temperature Compensation Connector Kit
DP40B-A Star
Availability: 2 weeks
Isolated 14 bit Analogue Output Board
DP40B-C24 Star
Availability: 3 weeks
Serial Communications RS-232 + RS-485 + MODBUS(can not be used with the Ethernet/Internet network option)
DP40B-EI Star
Availability: 2 weeks
Ethernet/Internet(can not be used with the RS-232/RS-485 option)
Click to expand/minimize a list of what others bought with theDPP-5
DPP-5 Star
Availability: 1 week
1/8 DIN panel punch
*FS20 Star
Consult Sales  
Factory Scaling - Please specify input min/max and corresponding display values required in order comments
All amounts shown in EUR, GBP, or USD
Ordering Example: (1) DP41-B Universal Panel Meter, £430.00  plus (1) DP40B-TC Thermocouple Input Board, £27.00, £430.00 + 27.00 = £457.00

Part Number Builder

Build Your Part Number Below
Option Descriptions:

(1) Relay Output select from:
Nothing(leave field blank) for no relay output
-4R for four form-C SPDT relay output board

(2) Analogue Output Board select from:
Nothing(leave field blank) for no analogue output board
-A for isolated 14 bit analogue output board

(3) Network Options select from:
Nothing(leave field blank) for no network options
-C24 for serial communications RS-232 + RS-485 + MODBUS
-EI for ethernet/internet

(4) Thermocouple Temperature Compensation Kit select from:
Nothing(leave field blank) for no thermocouple compensation kit
-TC for thermocouple temperature compensation connector kit
Note: All combinations may not be valid, check spec sheet for valid part numbers.

Product Manuals:

Download DP41-B - 4 Relay Output Option
Download DP41-B Series - Serial Communication Option
Download DP41-B - Universal Input Meter