Omega Products DP81C User Manual

Single- or Multi-Channel Digital Process Indicators

For Panel or Benchtop Use

DP81 Series

Starts at

599

DP81T, $599, shown smaller than actual size.

Wireless

Conversion Receivers

Available. For Details

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⻬ High Accuracy ⻬ 14 Thermocouple

Input Types

⻬ 6 RTD Inputs: 4 Platinum,

10 Ω Copper, and 120 Ω Nickel Types

⻬ Thermistor Inputs:

YSI 400 and 700 Series

⻬ Process Inputs:

4 Voltage and 2 Current

⻬ Modular Construction

Allows Options to Be Field-Installed

⻬ Single- or Double-

Width

Panel

⻬ Multiple Inputs up to

24 Thermocouple or 12 RTD Input

⻬ Latching or

Non-Latching Alarms

⻬ Isolated Analog Output ⻬ Fully Isolated RS232/

20 mA Digital Outputs

⻬ Math Expressions:

Display the Rate Change, Max/Min or Timed Average of Measurements

⻬ DC Power: Fully Isolated

12 or 24 Vdc Power Can Be Used with Floating or Grounded Sensors

The DP80 Series offers repeatability, reliability, and compatibility with most sensors. Temperature can be measured from -273 to 2318°C (-460 to 4206°F), or 0 to 2592 K, all with 0.1° resolution. DC voltage can be measured to 1 µV and ranges are available up to 100V. Process voltage and current loops can easily be scaled from the front panel, within 99999 display counts. Straingage indicators measure load cells, pressure, torque, thrust, and force with

0.01% precision. Whether you’re measuring the temperature of molten metal or testing jet

engine performance, make your choice a DP80 Series digital indicator.

Convenience From the Front Panel

Just about everything can be done from the front panel—even calibration. Simple display instructions prompt you every step of the way. Change sensor type selection, change °F or °C, set alarm points, or reset math options—from the front panel. When an option is installed, you’ll be prompted appropriately. Also, all output options are fully isolated, keeping unwanted ground loops from affecting the instrument’s measuring system. This further maintains the instrument’s high accuracy and increases your confidence in the displayed value.

Unique Sensor Error Compensation

Compensate for sensor offset errors such as those that commonly occur with thermocouples. The DP80 Series corrects offset errors inherent in sensors, lead-wires, and deviations from reference operating conditions. Use it to optimize measuring systems at a singlemeasurement point, such as monitoring a calibration bath.

Temperature Indicators

Thermocouple models accommodate 14 types of thermocouples (shown in the range table). RTD models accommodate 6 types of RTD sensors, and thermistor models accommodate both 400- and 700-type thermistors. They offer 0.1° resolution with thermocouples and RTD sensors and provide 0.01° to 0.02° resolution for thermistors. The front panel keypad is also used to select °F, °C, or Kelvin display units and input type. The DP80 Series can measure and display 1 input point or, with the multi-input option, as many as twentyfour inputs. The DP81 is a single-input instrument for rack or panel mounting and can accommodate up to 2 option cards. The DP82 is an expanded, double-width indicator that accommodates up to 5 options. Both are compatible with a wide selection of temperature sensors.

DC Voltage Indicators

Functioning as a digital voltmeter, the DP80 Series provides precision measurement and display of dc voltages. Four ranges, 100 mV, 1V,

M-65

KTSS-18G-12 molded transition junction probe, $19, sold separately. See page A-78.

10V, and 100V, are standard. Each range is displayed to its highest resolution within the full 99999 counts. With 0.01% accuracy and 1-digit repeatability, lab quality measurements are possible with a panel mount or benchtop indicator. For scaled DC voltages, the DP80-SCL option can be specified for use with models with V input code (DC voltage input). All DC input ranges shown in the DC voltage range table can be scaled, offset, have engineering units assigned, and have decimal position changed (e.g., 1 to 5 Vdc input can be displayed as

200.0 and 750.0 psi).

Current Loop Indicators

The DP80 Series can accurately measure and display process signals to proportional engineering units. For current loop measurements, models with “C” input code (current input) allow selection of either 4 to 20 mA or 10 to 50 mA. This input is pre-scaled and displayed as 0.00 to 100.00%. To display something other than 0 to 100%, you can add the scaling and offset option DP80-SCL. This option allows you to scale the display within ±99999 counts, change the engineering units, and reposition the decimal point location (e.g., 4 to 20 mA displayed as

0.00 to 560.0 gpm).

Strain Gage Indicators

The DP87 and DP88 Series of digital strain gage indicators are compatible with lower output-bonded foil-type transducers and high-output semiconductor transducers (up to 100 mV). Each instrument allows selection from one of 4 full-scale voltage ranges to optimize sensitivity. The measuring technique used is a unique voltage-to-frequency

Thermocouple Input and Range Table

Input includes max Code Sensor Type Range linearization error)

Iron- -336.0 to 2193.3°F 0.5°F Constantan -204.4 to 1200.7°C 0.3°C

68.8 to 1473.9 K 0.3 K

CHROMEGA®– -299.9 to 2503.5 °F 0.6°F ALOMEGA

Copper– -373.2 to 753.7°F 0.4°F Constantan -225.1 to 400.9°C 0.2°C

CHROMEGA®– -358.6 to 1835.2°F 0.6°F Constantan -217.0 to 1001.8°C 0.3°C

Platinum– 32.0 to 3219.1°F 1.2°F (above 79.0°F) Pt13% Rhodium 0.0 to 1770.6°C 0.7°C (above 26.0°C)

Platinum– 32.0 to 3216.7°F 1.2°F (above 79.0°F) Pt10% Rhodium 0.0 to 1769.3°C 0.7°C (above 26.0°C)

Pt30% Rhodium– 899.5 to 3309.6°F 2.0°F Pt6% Rhodium 481.9 to 1820.9°C 1.1°C

Nicrosil– 32.0 to 2301.5°F 0.5°F Nisil 0.0 to 1260.8°C 0.3°C

Tungsten 5% Re– -10 to 4200.4°F 1.1°F Tungsten 26% Re -23.3 to 2315.8°C 0.6°C

Tungsten– 295.0 to 4206.0°F 1.1°F Tungsten 26% Re 146.1 to 2318.9°C 0.6°C

W 3% Rhenium– -8.4 to 4203.8°F 1.1°F W 25% Rhenium -22.4 to 2317.7°C 0.6°C

CHROMEGA Gold .07% -273.4 to 7.2 °C 0.2°C Atomic Iron 0.0 to 280.4K 0.2 K

Iron– -330.6 to 1654.7°F 0.9°F Constantan -201.4 to 901.5°C 0.2°C

Copper– -331.3 to 1114.4°F 0.9°F Constantan -201.8 to 601.3°C 0.5°C

Platinum 100 Ω at 0°C -332.3 to 1571.7°F 0.2°F 3- or 4-wire -202.4 to 855.4°C 0.1°C ␣ = 0.00385/ 70.8 to 1128.6 K 0.1K DIN 43670 curve

Platinum 100 Ω at 0°C -401.0 to 1572.0°F 0.2°F 3- or 4-wire -240.6 to 855.4°C 0.1°C ␣ = 0.00392 32.6 to 1128.6 K 0.1K

Platinum 200 Ω at 0°C -330.1 to 1566.2°F 0.2°F 3- or 4-wire -201.2 to 852.3°C 0.1°C ␣ = 0.00392 72.0 to 1125.5 K 0.1K

Platinum 1000 Ω at 0°C 3- or 4-wire -204.4 to 1200.7°C 0.1°C ␣ =0.00375/HYCAL 68.8 to 1473.9 K 0.1K Ultra 7 curve

Copper 10 Ω at 25°C -337.2 to 507.2°F 0.8°F 3- or 4-wire -205.1 to 264.0°C 0.4°C per Minco table 16-9 68.1 to 537.2 K 0.4K

Nickel 120 Ω at 0°C -112.0 to 608.2°F 0.4°F 3- or 4-wire -80.5 to 320.1°C 0.2°C per Minco table 7-120 192.7 to 593.3 K 0.2K

-184.4 to 1373.1°C 0.3°C

88.8 to 1646.3 K 0.3 K

48.1 to 674.1 K 0.2 K

56.2 to 1275.0 K 0.3 K

273.2 to 2043.8 K 0.7 K (above 299.2 K)

273.2 to 2042.5 K 0.7 K (above 299.2 K)

755.1 to 2094.1 K 1.1 K

273.2 to 1534.0 K 0.3 K

249.9 to 2589.0 K 0.6 K

419.3 to 2592.1 K 0.6 K

250.8 to 2590.9 K 0.6 K

-460.1 to 44.9°F 0.4°F

71.8 to 1174.7 K 0.5 K

71.4 to 874.5 K 0.5 K

-330.4 to 1025.6°F 0.2°F

Accuracy (all ±‚

M-66

Current Input Range Table

Input Input Code Type Range Res.

4 to -5.00% to

20 mA 105.00% 0.01%

Note: Accuracy for voltage and current inputs: 0.01% rdg ±1 digit.

Voltage Input and Range Table

Input Input Code Type Range Res.

Thermistor and Range Table

Input Input Code Type Range Acc. Res.

Strain Gage Models with Range Table

Model Input No. Range Accuracy Res.

DP87 -15 to 1 µV/

DP88 -30 to 2 µV/

DP89 -75 to 5 µV/

10 to -15.00% to

50 mA 105.00% 0.01%

mVdc -15.000 to

99.999 mV 10 µV

mVdc -150.00 to

99.999 mV 100 µ

Vdc -1.5000 to

9.999 V 1 m

Vdc -15.000 to

99.999 V 10 mV

400 -42 to

Series 221°F 0.02°F 0.4°F 2252 Ω -42 to @ 25°C 105°C 0.4°C 0.01°C

(77°F) 231 to 2-Wire 458 K 0.2 K 0.01

700

Series 3-Wire

Select

100 mV count

200 mV count

500 mV count

-150 to 5 µV/

1000 mV count

31 to

213°F 0.4°F 0.01°F

0 to

100°C 0.2°C 0.01°C

272.6 to

373.8 K 0.2 K 0.01 K

0.01% rdg ±1 digit

DP81T, $599, shown smaller than actual size.

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