Your Source for Process Measurement & Control
Product Groups
1-8 DIN Ultra High Performance Meter- Temperature- Thermocouple- RTD- Strain- Process
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • Universal Inputs: DC Voltage/Current, T/C, RTD, Strain
  • Accuracy: ±0.005% rdg
  • 6-Digit Color Changing LED Display
  • Up to 142 Readings Per Second
  • 10-Point Linearization
  • 4 Isolated Open-Collector Output
  • Isolated Analog Output, Optional
  • Four Relays, Optional
  • Ethernet or RS232/RS485, Optional
  • NEMA 4 (IP65) Front Bezel
  • Ratiometic Mode for Strain Gages
 Manuals (contact with email : [email protected])


trodeks 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 142 readings per second.

The versatile 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 linearization 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 color between Red, Amber, and Green at any set point. The digits are 58% bigger than the typical display. Output options include: Isolated programmable analog voltage or current and four relays.

With the Serial Communications option, the user can select from a push-button menu between RS232, RS485, and either a straightforward ASCII protocol or MODBUS. With trodeks’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 RS232, RS422, and RS485, with straightforward ASCII commands or MODBUS.

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

Changing Colors Change Color at any Setpoint
Light Colors

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 color are quickly seen from a distance, and machine operators can intuitively react to changing conditions. The colors 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 color: 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.

Quality and Technology
The innovative 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 analog-to-digital conversion utilizes 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
The DP41-B handles NINE (9) thermocouple types: K, J, T, E, R, S, B, N, and J DIN. The patented thermocouple linearization algorithms employed in the DP41-B produce the highest standard of accuracy.

Most Accurate RTD Measurements
The 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 and Voltage Current
The trodeks® INF-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 any strain gauge sensor. Input can be linearized 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.
Analog Output
The optional analog 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
The 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).

TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
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.

TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
DP41-B 9 Segment LED Digits
(Bigger 17.3 mm Height)

TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
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 trodeks® DP41-B.

Free 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 trodeks®, GE Fanuc, Intellution, Rockwell Automation, iconics, and Wonderware among others.
Stem Demo

Factory Setup and Configuration
Make installing your DP41-B meter or controller easier by ordering it preconfigured by the factory. 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 trodeks® applications engineers.


Accuracy: ±0.005% rdg
Span Temperature Coefficient: ±20 ppm
Power: 90 to 240 Vac or 10-32Vdc
Line Voltage/Power: 90-240 Vac ±10%, 50-60 Hz
Low Voltage/Power Option: 10-32 Vdc, from qualified safety approved source
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 142 sample/sec.
Display: red/amber/green 6-digit, 9-segment color changing, 17.3 mm (0.68") H x 10.2 mm (0.40") W;
4 alarm indicators; °C, °F, & °K
Ethernet: Standards Compliance IEEE 802.3 10Base-T
RS232/RS422/RS485/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.

TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
Thermocouple Temperature Compensation
Connector Card for Thermocouple Input users
(See Order Guide)


Input Type
-210 to 760°C / -346 to 1400°F / 63.2 - 1673.2°K
0.2°C / 0.3°F / 0.2°K
K *1
-250 to 1250°C / -418 to 2282°F / 23 - 977.2°K
0.2°C / 0.3°F / 0.2°K
-270 to 400°C / -454 to 752°F / 3.2 - 673.2°K
0.2°C / 0.3°F / 0.2°K
-270 to1000°C / -454 to 1832°F / 3.2 - 1273.2°K
0.2°C / 0.3°F / 0.2°K
-50 to 1768°C / -58 to 3214°F / 223.2 - 2041.2°K
0.2°C / 0.3°F / 0.2°K
-50 to 1768°C / -58 to 3214°F / 223.2 - 2041.2°K
0.2°C / 0.3°F /0.2°K
+100 to 1820°C / +212 to 3300°F / 373.2 - 2093.2°K
0.3°C / 0.5°F / 0.3°K
trodeksALLOY *2
-270 to -1300°C / -454 to 2372°F / 3.2 - 1573.2°K
0.2°C / 0.3°F / 0.2°K
-200 to 900°C / -328 to 1652°F / 73.2 - 1173.2°K
0.6°C / 1.0°F / 0.6°K
*Includes (All±) Maximum Linearization 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 trodeks ENGINEERING, INC.

Accuracy (all±) includes maximum linearization error
Input Type
RTD 1 - 10ohm Copper
-200 to 200°C / -328 to 392°F / 73.2 - 473.2°K
1.0°C / 2.0°F / 1.0°K
RTD 2 - 0.00385 100ohm Pt
-200 to 900°C / -328 to 1652°F / 73.2 - 1173.2°K
0.2°C / 0.3°F / 0.2°K
RTD 3 - 0.00392 100ohm Pt
-200 to 850°C / -328 to 1562°F / 73.2 - 1123.2°K
0.2°C / 0.3°F / 0.2°K

Panel Punches are available for this product
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