ModelDTS4050

Digital Temperature Scanner
Data Sheet No. G552

Universal Thermocouple ScannerFeatures• Accepts type E, J, K, N, R, S, T, and B• Engineering Unit output, °C, °F, °R, or K
• Ethernet TCP/IP & UDP protocol• 1000Vdc channel-to-channel isolation• 600Vdc input isolation• 50 - 60 Hz noise rejection• Open thermocouple test
• IEEE1588 PTPv2 synchronization
DTS4050/32 Channel(shown)• 16, 32, and 64 channel

General Description

Applications

The DTS4050 series temperature acquisition system represents the next generation of intelligentthermocouple scanning. The DTS4050 is a direct
replacement for its predecessor, the DTS3250. TheDTS4050, Digital Thermocouple Scanner, accepts
16, 32, or 64 thermocouple inputs. It incorporates
integral low pass filters, 22 bit A/D converters, anda DSP microprocessor. The DTS module is specifically designed for high-noise environments andas such can withstand unmatched common modenoise.

The DTS4050 Digital Temperature Scanner isideal for use in turbine engine, diesel engine, andcompressor test cells, as well as other industrial
environments such as boiler and oven temperaturemonitoring. The module has a corrosion resistant,stainless steel enclosure with a locking lid for input
terminal access. The standard DTS is insulated,rugged, and splash resistant and incorporates
shock mounts for vibration isolation.

An isothermal block is incorporated for the Uniform
Temperature Reference (UTR) for each 16 channel input. NIST thermocouple tables for standard
thermocouple types are stored in flash memory. The
microprocessor uses these look-up tables to convert mV inputs to Engineering Units. Temperature
data are output in °C, °F, °R, K, millivolts andcounts.
The DTS4050 accuracy for types E, J, K, N, and T
is ± .25°C to ±0.5°C depending on the thermocouple type and the useful temperature range. (Referto accuracy table for a complete listing of supported
thermocouples and associated accuracies)

The DTS4050’s electronics were specifically designed to endure punishing high EMI noise environments while still being able to provide accurate
engineering data.
The DTS4050 is typically mounted in close proximity to the test article, thus minimizing thermocouple
wire lengths. Shorter thermocouple wires not only
reduce errors, but also lower costs due to the elimination of extension cables. Field calibrations can beused to modify coefficients which can also improveoverall system accuracy.
The standard DTS4050 module accepts two wire or
three wire shielded thermocouples.

Multiple standard thermocouple types may be usedwith one DTS4050.
LabView® is a registered trademark of National Instruments.

ISO 9001:2008 CERTIFIED		 DTS4050 ModuleIEEE1588 PTP

Common Mode Rejection

The DTS4050 has a hardware supported slave implementation of the Precision Time Protocol defined byIEEE 1588-2008, otherwise known as PTP V2. This protocol is used to synchronize the DTS4050 internal clock
over the Ethernet network.

The DTS4050 product line was specifically designed tooperate in environments with high levels of EMI. The
DTS’ unique architecture allows it to precisely read microvolt signals even amongst hundreds of volts of common mode noise. Supporting this capability, the DTS
is built around a robust front end. Every thermocouple
input channel has its own dedicated 22-bit A/D circuitproviding a huge, 1000Vdc channel-to-channel isolationbuffer. It is this unique parallel front end architecture thatprovides the DTS’ unmatched common mode rejection
ratio.

The primary function of the PTP is to accurately schedule the DTS4050 acquisition and timestamp the data it
transmits. It can also be used to timestamp an external
trigger, such as an IRIG-B pulse rate signal.
The DTS4050 may be configured to start an acquisition at a future date and time. When a SCAN commandis received, the DTS4050 schedules an event for thefirst frame and calculates the times of the subsequentframes of data based on the RATE setting. By configuring them identically, a number of DTS4050 units may be
configured to start acquiring data synchronously. TheDTS4050’s support for IEEE 1588 not only allows forsynchronization between multiple DTS4050 units, butalso make it simple to correlate data with any other IEEE
1588 devices on the network.

The specific common mode rejection ratio will vary between installations depending on the voltage, frequency,
scan rate and thermocouple type used, but the graphbelow can be used to roughly determine the MicroVoltoffset caused by various common voltages acrossthe frequency spectrum. In addition to the 1000Vdc
channel-to-channel isolation, the DTS is built to endurea sustained 600Vdc per channel of input isolation, whilestill providing accurate engineering unit data output.

Temperature Measurement

MicroVolts offset per Frequency

There are a number of standardized thermocouple
types available on the market. Each has different
properties, which makes them suitable for specifictemperature ranges and environmental conditions.

9000

Accuracy of a thermocouple measurement ishighly dependent upon the reference junction
connection, its material, installation techniques,and temperature.

6000

The DTS4050 intelligent temperature scanner
measures the mV signal from the thermocouples
and compensates for the temperature of the coldjunction.
NIST mV-temperature tables for each type thermocouple listed in this brochure are stored in theDTS4050 flash memory. This table is broken down
into increments of 0.1°C. The DTS4050 microprocessor utilizes the compensated EMF and the NIST
look-up table for conversion to engineering units.
Temperature data are then output via Ethernet with
TCP/IP or UDP protocol.

Legacy Compatibility
The DTS4050 software is backward compatible toexisting Scanivalve DTS data systems. Therefore,
DTS3250 and DTS4050 modules can operate inparallel on a single network, communicating withthe same controlling software.

8000

MicrooVolts offse
et

7000

5000

110V
230V
480V

4000

600V
3000

2000

1000

000.0001

0.001

0.01

0.1

1

1030

Frequency (MHz)In order to take advantage of the DTS’s high common
mode rejection capability, the DTS was also designed
to endure the physical stresses that can be associatedwith high-noise environments. The DTS is mounted on
Mil-Spec rated shock mounts and enclosed in a rugged
stainless steel chassis. The integrated UTR block andincluded insulation cover provide a stable, accurate reference point for all incoming thermocouple junctions.

DTS4050 System / Specifications / Ordering
DTS4050 Communications
The DTS4050 module interfaces directly toa host via an Ethernet connection. Scanivalve’s free
ScanTel communications program is designed to assist a user in establishing communications and datacollection, as well as configuring the DTS module.  

Specifications
Inputs (Px):16, 32, or 64 pairs of 6-32 brassscrew terminals plus shields or 		optional panel jack connectors

Thermocouple
Types:
screw terminal:
E, J, K, N, R, S,T, and B
panel jack option: E, J, K, S and T
Accuracy Table*

DTS4050
Accuracy:

Thermocouple Type		

Accuracy over Full
Operating Range

Accuracy at ConstantAmbient

E,J,K,N, and T±0.5°C±0.25°C

R and S

±2.0°C±1.0°CB±4.0°C±2.0°CUTR Accuracy:±0.1°C

A/D Resolution:

22 bitScan Rate:

64Tx: 10 Hz/channel
32Tx: 20 Hz/channel
16Tx: 40 Hz/channel		Std unitOperating
Temperature:

Additionally available is a Software Development Kit
for users who want to write their own detailed dataacquisition program in LabVIEW®. This Development Kit includes the Configuration Utility softwareand examples to assist a user in the setup of thesystem. An OPC driver is also available (16Tx only).
Mating Connector
Type:		100BaseT		 RJ-45		 -Conec 17-101794 shell optional
Power: 		 Bendix PTO6A-8-3S-SR, 3 pin		female
RS232/Trigger: 		 Amphenol MS27473T8F6S, 6 pin		female
Power: (18–36Vdc)
Standard—No heater:		
16Tx:		 .58 Amps @ 28Vdc
32Tx:		 .83 Amps @ 28Vdc
64Tx:		 1.45 Amps @ 28Vdc
With Optional Heater:
16Tx:		 1.6 Amps @ 28Vdc
32Tx:		 4.8 Amps @ 28Vdc
External Trigger:		 6.5 mA at 5-15 Vdc minimum		 leading edge sensing
Weight:Screw terminal-16 Tx: 		 13.00 lbs (5.9 kg)
Panel jack option-16 Tx:		 12.00 lbs (5.45 kg)
Screw terminal-32 Tx: 		 15.5 lbs (7.03 kg)
Panel jack option-32 Tx:		 15.0 lbs (6.80 kg)
Screw terminal-64 Tx: 		 25.0 lbs (11.35 kg)
Input/Output
Isolation:		 600 Vdc

with optional heater

16Tx-10 to 60°C

-20 to 60°C

32Tx

-5 to 60°C

-20 to 60°C

64Tx

-5 to 60°C

N/A

Channel-Channel
Isolation:		 1000 Vdc

Communication:

Ethernet 100baseT 				RS-232 (configuration only)

Output:°C, °F, °R, K, mVolts, or Counts

Communication
Protocol:TCP/IP or UDP

CE Mark
Standards:

Class A EN61326-1 v2006*System accuracy specifications are valid after a threehour warm up period. Accuracy does not include Thermocouples, Thermocouple Extension Wire, or Panel Jack
Connector option.

Ordering Information
DTS4050/16Tx		

/(Specify “Optional Heater”)

blank, screw terminals
No. ofInputs
PJ, standard 3 prong panel jack input
Specify “optional-16(Specify thermocouple type E, J, K S or T) heater” for 16 or 32-32
PJ not available for 64Tx
channel modules-64
For 32 channel rack mount kit, order 21195-2
For 64 channel rack mount kit, order 21195-1.
Model

DTS4050 Dimensions

16Tx Screw Terminal Inputs

32Tx Screw Terminal Inputs

16Tx Panel Jack Connector Inputs

32Tx Panel Jack Connector Inputs

Dimension in inches [mm]64Tx Screw Terminal Inputs
Scanivalve Headquarters
1722 N. Madson StreetLiberty Lake, WA 99019
Tel: 509-891-9970
800-935-5151
Fax: 509-891-9481
e-mail: scanco@scanivalve.com*Specifications are subject
to change without notice.

www.scanivalve.com
1405
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2014, Scanivalve Corp.