Specifications

PRT / RTD

Thermistor

Thermocouple

Inputs

2 channels PRT/thermistor and 2 channels TC, or 4 channels PRT/thermistor, or 4 channels TC, specify when ordering; PRT/thermistor channels accept 2, 3, or 4 wires; TC inputs accept B, E, J, K, N, R, S, T, and Au-Pt TC types

Temperature Range

–189 to 960°C

–50 to 150°C

–270 to 1800°C

Measurement Range

0 to 400 W

0 to 500 KW

–10 to 100 mV

Characterizations

ITS-90, IEC-751 (DIN ‘385’), Callendar-Van Dusen

Steinhart-Hart, YSI-400

NIST Monograph 175, 3-point deviation function applied to NIST 175, 6th-order polynomial

Temperature Accuracy (meter only)

±0.004°C at –100°C

±0.006°C at 0°C

±0.009°C at 100°C

±0.012°C at 200°C

±0.018°C at 400°C

±0.024°C at 600°C

±0.0025°C at 0°C

±0.0025°C at 25°C

±0.004°C at 50°C

±0.010°C at 75°C

±0.025°C at 100°C

        Ext. RJC    Int. RJC

B at 1000°C   ±0.6°C    ±0.6°C

E at 600°C   ±0.07°C   ±0.25°C

J at 600°C    ±0.1°C    ±0.35°C

K at 600°C    ±0.15°C    ±0.4°C

N at 600°C   ±0.15°C   ±0.3°C

R at 1000°C   ±0.4°C    ±0.5°C

S at 1000°C    ±0.5°C    ±0.6°C

T at 200°C    ±0.1°C    ±0.3°C

Temperature Resolution

0.001°

0.0001°

0.01 to 0.001°

Resistance / Voltage Accuracy

0 to 20 W:  ±0.0005 W

20 to 400 W:  ±25 ppm of rdg.

0 to 5 KW:  ±0.5 W

5 to 200 KW:  ±100 ppm of rdg.

200 to 500 KW  ±300 ppm of rdg.

–10 to 50 mV:  ±0.005 mV

50 to 100 mV:  ±100 ppm of rdg.

(Internal RJC: ±0.25°C)

Operating Range

16 to 30°C

Measurement Interval

0.1 second to 1 hour; inputs may be read sequentially or simultaneously at 1 second or greater interval

Excitation Current

1mA

2 and 10 mA, automatically selected

n/a

Display

1.3” x 5” backlit LCD graphical display

Display Units

°C, °F, K, W, KW, mV

Data Logging

Up to 8,000 time- and date-stamped measurements can be logged

Logging Intervals

0.1, 0.2, 0.5, 1, 2, 5, 10, 30, or 60 seconds; 2, 5, 10, 30, or 60 minutes

Averaging

Moving average of most recent 2 to 10 readings, user selectable

Probe Connection

Patented DWF Connectors accept spade lug, bare-wire, or banana plug terminations

Universal receptacle accepts miniature and standard connectors

Communications

RS-232 and IR ports included, IEEE-488 (GPIB) optional

AC Power

100 to 240V AC, 50-60 Hz, 0.4A

DC Power

12 to 16V DC, 0.5A (battery charges during operation from 14.5 to 16V DC, 1.0A)

Battery

NiMH, 8 hours operation typical without backlight, 3 hours to charge, 500 cycles

Size

4.0” H x 7.5” W x 8.2” D (102 x 191 x 208 mm)

Weight

4.5 lbs. (2 kg)

Probes from Hart

Contact Hart for a wide variety of precision PRTs, thermistors, and thermocouples

Calibration

NIST-traceable resistance certificate and NIST-traceable voltage certificate provided

Inputs

The Chub-E4 has four inputs for reading four different sensors simultaneously, and we’ll configure those inputs in any of three different ways. Choose four channels of thermocouple inputs, four channels of PRT/thermistor inputs, or two channels of each. With this thermometer, reading thermocouples, PRTs, and thermistors accurately from the same device is no problem.

100-ohm or 25-ohm PRTs (with two, three, or four wires) are read using ITS-90, IEC-751 (DIN), or Callendar-Van Dusen conversion methods. Typical accuracies include ±0.006°C at temperatures below 0°C and ±0.009°C at 100°C. Thermistor readings are converted using the Steinhart-Hart polynomial or standard YSI-400 curve and are as accurate as ±0.0025°C at 25°C with four-digit resolution.

Thermocouple inputs read all the common thermocouple types, including B, E, J, K, N, R, S, T, and Au-Pt, and allow you to choose between internal and external reference junction compensation. Typical accuracy for a type J thermocouple using internal reference junction compensation at 600°C is ±0.35°C, not including the thermocouple.

PRTs and thermistors connect easily to the 1529 using Hart’s patented mini-DWF connectors, which accept bare-wire, spade lug, or miniature banana plug terminations. Thermocouples connect using standard or miniature terminations. Measurements are made each second and can be taken simultaneously or sequentially. A special high-speed mode allows measurements to be taken at the rate of 10 per second.

Display

If you think three sensor types and four inputs sounds versatile, wait until you see the display panel on the Chub-E4. Displaying measurements in °C, °F, K, ohms, or millivolts and choosing temperature resolution from 1 to 0.0001 are just the beginning.

You can also select any eight data fields to view on-screen. Choose statistical functions such as averages, standard deviations, and spreads; choose probe information such as probe type and serial number; choose T1-T2 functions using inputs from any two channels; or choose utility functions such as the date, time, and logging status. You can even save a number of screen configurations for easy recall.

The push of a front-panel button also brings up a simple menu system to easily guide you through the set-up and memory options of the 1529. Probe coefficients, sample intervals, communication settings, password settings, and a host of other functions are all easily accessible.

Choose from three combinations of inputs: 2 PRT/Thermistor and 2 TC or 4 PRT/Thermistor or 4 TC.

PRTs and thermistors connect easily with Hart’s patented mini-DWF connectors, which accept bare wire, spade lug, or banana plug terminations.

The Chub-E4 reads 2-, 3-, or 4-wire PRTs with either 25- or 100-ohm nominal resistance values. A grounding terminal is also included.

Thermocouple receptacles accept both standard and miniature connectors. The Chub-E4 reads thermocouple types B, E, J, K, N, R, S, T, and Au-PT.