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Handheld green digital psychrometer with LCD display

TEST PRODUCTS INTL. 597C1 Digital Psychrometer -40 to 122F

SKU CH-RNTT-0K5HS

Measures humidity 0 to 100% and temperature -40 to 122°F with ±3% humidity and ±(0.5%+2°F) temperature accuracy

  • Product typeEnvironmental & Mechanical
  • Measures humidity 0–100 % with ±3 % accuracy
  • Reads temperature from -40 to 122 °F
  • Wet-bulb range covers 41–140 °F for HVAC work
  • Dew-point span reaches -40 to 176 °F
  • LCD display with data hold and auto power-off

Digital Psychrometer for Environmental Monitoring

The TEST PRODUCTS INTL. 597C1 measures relative humidity from 0 to 100 percent and temperature from -40 to 122 degrees Fahrenheit. It is built for technicians and facility managers who need immediate ambient condition readings. The LCD shows values with 0.1 percent humidity resolution.

Humidity Accuracy Decides Suitability

The sensor delivers +/-3 percent humidity accuracy across the full range. Temperature accuracy is +/- (0.5 percent of reading + 2.0 degrees F). These tolerances fit general HVAC checks and storage monitoring but not laboratory calibration work.

Battery and Hold Functions Support Field Use

A 9V battery powers the meter and auto power off preserves charge during transport. Data hold freezes the display for recording in tight spaces. No data logging is included so continuous trend capture requires manual notation.

How it compares

Measured against everything we stock in Test Equipment & Meters, at today’s prices. Recalculated every night.

Price $202.99
Pricier than about 64% of the 202 comparable items (median $148.99).

Specifications

Product
Brand nameTEST PRODUCTS INTL.
Product typeEnvironmental & Mechanical

Questions about this item

What does the -40 to 122°F temperature range mean when I am using the meter on site?

The instrument will measure air temperature reliably from -40 up to 122 degrees Fahrenheit, covering freezing conditions through hot industrial environments.

What does the ±3% humidity accuracy actually limit in daily readings?

Any relative-humidity value shown can be up to three percentage points higher or lower than the true ambient level.

What physical mounting or fitting does the 597C1 need to operate?

It is a handheld unit powered by a single 9 V battery; no fixed mounting or external connections are required.

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