Rotronic HP21 Bedienungsanleitung PDF herunterladen (Seite 12)

E-M-HP21-V1_21

Rotronic AG

Bassersdorf, Switzerland

Document code

Unit

HygroPalm HP21 hand-held indicator:

User Guide

Instruction Manual

Document Type

Page

12 of 14

Document title

7 Technical data

7.1 Specifications

General

HP21

Device type

Humidity-temperature hand-held indicator with integral probe

Battery type

9 V alkaline

Low battery indication

Yes

Humidity measurement

HP21

Sensor

ROTRONIC Hygromer

M1-R

Measuring range

0…100 %RH

Measurement accuracy at 23 °C

±1.0 %RH

Repeatability

0.3 %RH

Long term stability

< 1 %RH / year

Sensor time constant

Typical 10 sec, 63% of a 35 to 80 %RH step change (1m/sec air flow at sensor)

Temperature measurement

HP21

Sensor

Pt100 RTD, IEC 751 1/3 class B

Measuring range

-10...60°C

Measurement accuracy at 23 °C

±0.2 °C

Repeatability

0.05°C

Long term stability

< 0.1°C / year

Sensor time constant

Typical 4 sec, 63% of a step change (1m/sec air flow at sensor)

Calculated parameters

HP21

Psychrometric calculations

Dew or frost point (user configurable setting)

Start-up time and data refresh rate

HP21

Start-up time

1.9s (typical)

Data refresh rate

1.7s (typical)

Service connector

HP21

Interface type

UART (Universal Asynchronous Receiver Transmitter)

Maximum service cable length

5 m (16.4 ft)

General specifications

HP21

Display

LC, 1 or 2 decimals resolution, backlight, trend, alarm and low battery indication

Probe material

Polycarbonate

Probe dust filter material

Polyethylene

Housing material

ABS

Housing protection grade

IP 40

Overall dimensions

270 x 70 x 30 mm (10.63 x 2.76 x 1.17”)

Probe dimensions

80 x 15 mm (3.15 x 0.59”)

Weight

About 198 g (7.0 oz)

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