Field Instruments

972A

972B

972ES

Detailed Specifications

Sensor Type

Internal

Internal + External

External

Temperature Measurement Range

-30.0 ℃ to 65.0 ℃

Internal sensor: -30.0 °C to 65.0 °C;
External sensor: -40.0 °C to 99.9 °C

-40.0 °C to 99.9 °C

Temperature Accuracy

±0.5 ℃ (-30.0 ℃ to 65.0 ℃)

Internal sensor: ±0.5 °C (-30.0 °C to 65.0 °C)
External sensor: ±0.5 °C (-30.0 °C to 65.0 °C);
±0.7 °C (others)

±0.5 °C (-30.0 °C to 65.0 °C);
±0.7 °C (others)

Temperature Resolution

0.1 °C

Dew Point Temperature

Range

N/A

-40.0 °C to 99.9 °C

N/A

Resolution

N/A

0.1 °C

N/A

Wet Bulb Temperature

Range

N/A

-20.0 °C to 60.0 °C

N/A

Resolution

N/A

0.1 °C

N/A

Humidity

Range

0.0% RH to 99.9% RH

Accuracy

±3% RH (≥20.0% RH to ≤80.0% RH @ 25 ℃)
±5% RH (≥1% RH to <20% RH, >80% RH to ≤95% RH @ 25℃)
Unspecified for others

Resolution

0.1% RH

Data Storage

N/A

Yes. Up to 99 sets

N/A

Display

2-line LCD display, with backlight

No

Auto-off

Power off after 20 min without any operation

N/A

Max/Min/Avg

Yes

Yes

N/A

Auto Logging Mode

N/A

Yes

N/A

General Specifications

Temperature

Operating

-30 °C to 70 °C

-40 °C to 70 °C

Storage

-30 °C to 70 °C, <80% RH (without battery)

-40 °C to 70 °C, <80% RH

Altitude

Operating

2000 m

Storage

12 000 m

Relative Humidity

Operating

0% RH to 99% RH

Storage

＜80% RH

Power Supply

Battery Type

2 x AAA Batteries

—

Battery Life

1000 hrs for continuous operating, backlight off

—

Safety

IEC61010-1, Pollution Degree 2

Dimensions (L x W x H)

211 × 58 × 40 mm

264 × 33 × 28 mm

Weight

172 g (body)

127 g

Electromagnetic Environment (EMC)

IEC 61326-1: Portable, Electromagnetic Environment; IEC 61326-2-2; CISPR 11: Group 1; Class A

Group 1: Equipment intentionally generates and/or uses conductive-coupled RF energy, which is necessary for its internal operation.
Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network that supplies buildings used for domestic purposes. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances.
Caution: This equipment is not intended for use in residential environments and may not provide adequate protection to radio reception in such environments.

IP Rating

IEC 60529: IP30, non-operating