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Hart Scientific Temperature Measurement Equipment

Hart 1521, 1522 Handheld Thermometer

Hart 1521 * Hart 1522 (data logging)

The Models 1521 and 1522 are the first standards thermometers to fit into a battery-powered handheld package. They’re as accurate as ±0.005°C! You’ll only find this level of accuracy in large desktop units that cost three times more. It’s no wonder we call the 1521 the Little Lord Kelvin of thermometry.

Fitting easily into your hand and weighing only 1 pound (0.4 kg), these thermometers can go anywhere. And when they get there, you can have total confidence in the accuracy of your measurements. The 1522 has the power of a full data logger, with memory to hold 10,000 readings.

Reads PRTs/RTDs to ±0.025°C and thermistors to ±0.005°C
Model 1522 logs up to 10,000 readings on-board in multiple data sets
INFO-CON connector allows interchangeable use of calibrated probes
INFO-CON eliminates errors from programming probe data

Probes

Probes attach to the 1521 and 1522 using Hart’s new “INFO-CON” connector. The INFO-CON (partially based on U.S. Patent 5,857,777) allows you to change the probes you use without requiring you to reprogram your readout.

A memory chip in the INFO-CON stores all the critical information about your probe, including its serial number, recall date, and calibration constants.

When you connect your probe, the 1521 automatically recognizes whether you’re using an RTD or thermistor and downloads the calibration constants and type of conversion specific to your probe. It also checks the recall date stored in the INFO-CON to verify it has not expired. To dedicate a single probe to your readout, disable the password-protected interchangeability function and your thermometer will read only the probe you specify.

Specifications

Sensor Type Pt 25 to Pt 100 Thermistor

Temperature Range –200°C to 962°C –50°C to 150°C

Resistance Range 0W to 400W 0W to 500 KW

Characterizations ITS-90, IEC-751 (DIN “385”), Callendar-Van Dusen Steinhart-Hart thermistor polynomial, YSI 400 (2252 ohms)

Temperature Accuracy (meter only) –200°C to 100°C: ±0.025°C
100°C to 400°C: ±0.05°C
400°C to 800°C: ±0.1°C
800°C to 962°C: ±0.15°C
0°C to 50°C: ±0.005°C
50°C to 75°C: ±0.01°C
75°C to 100°C: ±0.02°C

Excitation Current 0.5 mA 5 mA

Operating Range 0°C to 40°C

Temperature Resolution 0.001°

Measurement Period 1 second

Digital Filter 1- to 60-second exponential filter

Probe Connection INFO-CON Connector

Communications RS-232 (Model 1522 also includes infrared interface)

Memory Stores 6 readings in “Hold” mode
1522 Only - Logs 10,000 readings in “Auto Logging” mode; logs 100 readings in “Demand Logging” mode. Memory holds up to 25 data labels that may be attached to Demand Log readings or Auto Log data sets.

Display 6-digit, 7-segment LCD with 16x1 alphanumeric

Power Rechargeable nickel-metal-hydride batteries (AC adapter included)

Size 7.75" H x 4.2" W x 1.5" D (20 x 11 x 4 cm)

Weight 1 lb. (0.4 kg)

Probes from Hart Contact Hart for a wide variety of precision PRTs and thermistors

Calibration 10-point, NIST-traceable resistance calibration provided

Hart 1529 Precision 4-channel Thermometer

Ordering Info

Features :

Four channels for PRTs, thermistors, and thermocouples

Displays eight user-selected data fields from any channel

Logs up to 8,000 readings with date and time stamps

Battery provides eight hours of continuous operation

So you need multiple channels, battery power, outstanding accuracy, and the ability to read many different sensor types—but you don’t need all the power of a 1 ppm Super-Thermometer. We have the answer for you.

Hart’s Model 1529 Chub-E4 Thermometer gives you four channels, three major sensor types, lab-quality accuracy, and a ton of great features, all at a price you’ll love.

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