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Rotronic Hygro Palm HP23 Humidity Temperature Handheld Indicator

Humidity Temperature Handheld Indicator
Hygro Palm HP23

The HP23 is a multi-function hand-held indicator that can read the data from up to two HygroClip 2 probes and display relative humidity, temperature and a calculated parameter such as the dew or frost point. Any probe input can also be configured by the user to accept a third party analog probe (restrictions apply).

Selecting the appropriate HygroClip 2 probe for the HP23 is done based on the application. Depending on the probe, the measuring range is within 0 to 100 %RH and -100 to 200°C (-148 to 392°F). The HygroClip 2 probes feature durable sensors, consistent performance and can be hot-swapped to facilitate routine maintenance.

The HP23 indicator has an extensive set of settings and functions that can be enabled and configured by the user either directly from the keypad or with the ROTRONIC HW4 software. In spite of its sophistication, the HP23 can still be used just as a simple humidity and temperature indicator. Whether you decide or not to take advantage of its full potential, the HP23 will let you have it your way.

• Two configurable inputs for HygroClip 2 interchangeable probe - up to 5 m/16.4 ft extension cable
• Measures relative humidity & temperature
• Calculates dew point, frost point, wet-bulb temperature, mixing ratio, etc.
• Any input can be configured to read a 1-channel analog probe (barometric pressure, air velocity)
• 0 to 100 %RH and -100 to 200 °C (-148 to 392 °F) - depending on probe model
• Accuracy at 23 °C: ± 0.8 %RH and ± 0.1 °C

• Temperature unit (°C or °F) selectable from the keypad
• Uses a regular 9V alkaline battery
• LC display with backlight

HP23 Special features:
Real time clock (date and time)
Manual data capture directly from the keypad to any of eight user named data bins, each capable of retaining up to 250 humidity and temperature values measured by a HygroClip 2 probe. The captured data can be either viewed on the display or downloaded to a PC with the HW4 software.
Data logging - automatic recording of up to 20,000 single values or 10,000 relative humidity and temperature value pairs. The HW4 software is required to download and view the data.
Calibrator function: One-point or multi-point humidity or temperature adjustment directly from the keypad against either a reference probe connected to the HP23 or a reference environment. The HP23 can be used to adjust any HygroClip 2 probe, the HF3, HF4, HF6 and HF7 transmitters, the HP21 indicator and any other AirChip 3000 product that has a non removable probe or sensors.
Delta Probe Mode: displays the difference between two probes of the same type.

Device type Humidity-temperature hand-held indicator with 2 configurable probe inputs (HygroClip 2 or analog probe) and real time clock (date and time)
Battery type 9 V alkaline (standard) or Ni-MH 8.4V, 170…250mAh (rechargeable)
Low battery indication Yes (7-segment icon)
Battery charge Yes (rechargeable battery only) via service connector (use PC USB port or AC adapter)
Operating modes
Standard mode Display of %RH, temperature + calculated parameter Display of analog probe measurement
AW mode Display of water activity and temperature
o AwE : conventional measurement
o AwQuick : accelerated measurement
Probe input options
Digital probe HygroClip 2 probe
Analog probe (12-bit AD converter) Supply voltage to probe: 5 VDC Maximum probe signal range: 0 to 3.3 VC Configurable measuring range and measurement unit
Start-up time and data refresh rate
Start-up time 3 s (typical)
Data refresh rate 1 s (typical)
Delta Probe or User defined parameter o %RH, temperature and calculated parameter difference (probe 1 less probe 2). This is available only when the calculation of a user defined parameter is not enabled.
o Using the HW4 software, the HP23 can be set to calculate up to two user defined parameters
Data capture o Manual data capture of %RH and temperature + date and time stamp (HygroClip 2 probe only)
o 8 separate data bins (each can be given a specific name with the HW4 software)
o Up to 250 records per data bin
Data logging o Configurable log interval (from 5 sec to 1 hour)
o Start-Stop or Loop mode
o Up to 10,000 RH+T records for a single HygroClip 2 probe
o Up to 10,000 records for a single 1-channel analog probe
o Each data record is given a date and time stamp
o Recording capacity per probe is cut in half when two probes are being simultaneously recorded
Calibrator o Can be used to calibrate and adjust HygroClip probes, transmitters and other devices based on the AirChip 3000 technology
o Fully fledged calibration and adjustment function
o Calibration against reference probe or reference environment
Water activity measurement o Conventional water activity measurement
o Accelerated water activity measurement
o Automatic end of measurement Simultaneous measurement of two probes (HygroClip 2 only)
Service connector
Interface type USB
Maximum service cable length 5 m (16.4 ft)
Display LC, 1 or 2 decimals resolution, backlight, trend, alarm, data logging and low battery indication
Display modes %RH and temperature + date and time %RH, temperature and calculated parameter %RH or temperature or calculated parameter + date and time Water activity and temperature
Housing material ABS
Housing protection grade IP 40
Overall dimensions 270 x 70 x 30 mm (10.63 x 2.76 x 1.17")
Weight About 198 g (7.0 oz)
Conformance to standards
CE / EMC immunity EMC Directive 2004/108/EG: EN 61000-6-1: 2001, EN 61000-6-2: 2005 EN 61000-6-3: 2005, EN 61000-6-4: 2001 + A11
Solder type Lead free (RoHS directive)
FDA / GAMP directives Compatible
Environmental limits
Storage and transit -20…+70 °C / 0…100 %RH, non condensing
Operating limits at electronics -10….60 °C (limited by LC display)
0…100 %RH, non condensing
Temperature limits at probe Depends on probe model
Maximum humidity at probe 100 %RH up to 80 °C (176 °F)
75 %RH at 100 °C (212 °F)
45 %RH at 125 °C (260 °F)
15 %RH at 150 °C (302 °F)
Maximum air velocity at probe 20 m/s (3,935 ft /min)
Critical environments Humidity sensor: as per DV04-14.0803.02 - Critical chemicals

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