HygroPalm HP22 Hand-Held Indicator Sort form User Guide
Contents
1. humidity sensor are not exceeded condensation does not alter the calibration of the sensor However the sensor has to dry out before it can provide a valid measurement Non moving air is an excellent insulator When there is no air movement surprising differences in temperature and humidity can noted over short distances Air movement at the probe generally results in measurements that are both faster and more accurate Replacing the battery To replace the battery turn the latching button counter clockwise and pull out the battery holder MaintenanceService cable e Cable AC3006 converts UART service connector to USB and is used to connect the HP22 to a USB port of a PC running the ROTRONIC HW4 software Prior to using this cable the ROTRONIC USB driver must be installed on the PC Both the driver and the installation instructions document E M HW4v2 1 Main are located on the HW4 CD Location of the service connector mini USB type The service connector UART interface can be accessed without opening the enclosure after removing the protective red round cover Periodic calibration check Both the Pt 100 RTD temperature sensor and associated electronics are very stable and should not require any calibration after the initial factory adjustment Long term stability of the ROTRONIC HygroMer humidity sensor is typically better than 1 RH per year For maximum accuracy calibration of the HygroClip 2 probes should be verified ever2. HygroPalm HP22 Hand Held Indicator Sort form User Guide Detailed version you find under www rotronic humidity com Overview The HP22 is a highly accurate hand held indicator that displays relative humidity temperature and a calculated parameter such as the dew or frost point The HP22 is available with a wide assortment of HygroClip 2 humidity temperature probes to meet almost any requirement Depending on the probe model the HP22 can measure conditions within the range of 0 to 100 RH and 100 to 200 C 148 to 392 F The temperature operating range of the HP22 electronics is limited to 10 60 C Based on the ROTRONIC AirChip3000 digital technology the HP22 indicator HygroClip2 probes offer the following user functions User configurable settings Calculation of all psychrometric parameters Humidity temperature calibration and adjustment Simulator mode Automatic humidity sensor test and drift compensation Sensor failure mode Data recording Ce SE Power supply gt The HP22 operates with a regular 9V alkaline battery Measured parameters gt The probes used with the HP22 measure relative humidity with a ROTRONIC HygroMer IN1 capacitive sensor and temperature with a Pt100 RTD gt Using the ROTRONIC HW4 software the HP22 can be configured by the user to calculate one of the following parameters Dew point Dp above and below freezing Frost point Fp below freezing and dew point above freezing Wet bulb temperature Tw o Enth
3. alpy H Calculated parameters O o Vapor concentration Dv o Specific humidity Q o Mixing ratio by weight R o Vapor concentration at saturation Dvs o Vapor partial pressure E o Vapor saturation pressure Ew Note some of the above parameters depend on the value of the barometric pressure Using the ROTRONIC HW4 software a fixed barometric pressure value can be specified Service connector The service connector UART interface with a mini USB type connector allows connecting the HP22 either to a PC running the ROTRONIC HW4 software or to a probe input of another instrument that is compatible with the HygroClip 2 HC2 probes In both cases a service cable is required e Connecting the HP22 to a PC is used to configure the HP22 gain access to the HP22 and probe functions such as humidity and temperature adjustment read data from the HP22 on the PC and update the firmware of either the HP22 or probe Functions The HF22 and associated probe offer two groups of functions a HP22 functions e Psychrometric calculations no calculation e Out of limit values disabled e Sensor alarm monitoring enabled e Simulator mode disabled b HygroClip 2 probe functions e Data recording off e Sensor failure mode enabled e Humidity temperature calibration and adjustment e Automatic humidity sensor test and drift compensation disabled The following settings can be configured with the HW4 software Confi
4. djustment depends on the number of calibration points present in the probe memory prior to the adjustment one calibration point offset added to all measured values two calibration points offset and slope three or more calibration points offset slope linearity For maximum accuracy use at least 3 to 4 calibration points distributed equally across the measurement range of interest The calibration points maximum 100 can be acquired in any order but we recommend going from low humidity values to high humidity values e When humidity is stable press the MENU key to show the internal menu on the display Use the key to select Humidity Adjust and press the ENTER key Make sure that the text line beginning with RefValue is highlighted and press the ENTER key Use the or key to change the reference value to match the reference humidity Use the key to highlight the Acquire text line and press the ENTER key Note that the Acquired counter is incremented by 1 number of calibration points in the probe memory When all calibration points have been acquired use the key to highlight the Adjust text line and press the ENTER key Do not adjust the probe before having acquired all calibration points e The HP22 confirms the adjustment with the message Adjust OK e Press the MENU key twice to exit the menu and return the HP22 to normal operation Notes o All calibration points are automatically deleted from the probe m
5. emory after an adjustment o The Delete text line can be used to manually delete all calibration points prior to a probe adjustment o Because the HP22 has no real time clock the date of the adjustment is not written to the probe If retaining the adjustment date is important use the HW4 software to adjust the probe b Using the HW4 software to adjust the probe connected to the HP22 e Use cable AC3006 to connect the service connector of the HP22 to a USB port of a PC with the HW4 software installed Note that the ROTRONIC USB driver must be installed on the PC as explained in the HW4 manual E M HW4v2 1 Main e Start HW4 on the PC and search for the HP22 HW4 Main Menu Bar gt Devices and Groups gt Search for USB Masters e After finding the HP22 with HW4 expand the device tree to see the HP22 functions Select Probe and Probe Adjustment e For further instructions see HW4 manual E M HW4v2 1 A2 001 Technical data General HP22 Device type Humidity temperature hand held indicator with integral probe Battery type 9 V alkaline Low battery indication Yes Psychrometric calculations As mentioned above Start up time 3 s typical Data refresh rate 1 s typical Interface type UART Maximum service cable length 5 m 16 4 ft Display LC 1 or 2 decimals resolution backlight trend alarm and low battery indication Probe material Polycarbonate ABS Probe dust filter material Polyethylene Housingmateial faes oo Weigh
6. ey to show the internal menu on the display With the menu item Settings highlighted press the NTER key With the menu item Unit highlighted press the ENTER key Use the UP or DOWN key to change the unit system Press the MENU key twice to exit the menu and return the HP22 to normal operation The optional HW4 software can also be used to change the unit system Low battery indicator When the battery is down to about 20 of its initial charge Low Battery appears at the bottom of the display Practical advice for measuring humidity The most common source of error when measuring relative humidity is a difference between the temperature of the probe and the temperature of the environment At a humidity condition of 50 RH a temperature difference of 1 C 1 8 F typically results in an error of 3 RH on relative humidity When using the HP22 hand held indicator it is good practice to monitor the display for temperature stability The probe should be given sufficient time to equilibrate with the environment to be measured The larger the initial temperature difference between the probe and the environment to be measured the more time temperature equilibration requires This time can be shortened and errors avoided by using the probe configuration that fits best for your application In extreme situations condensation may occur on the sensors when the probe is colder than the environment As long as the humidity temperature limits of the
7. gurable Setting Factory default Unit system Metric can be changed from the keypad Psychrometric calculation Frost point factory default Fixed barometric pressure value 1013 25 hPa Data refresh rate 1 second On Key Press can be changed from the keypad Enabled can be changed from the keypad Allow menu access internal menu Enabled RS 485 address 0 Notes Unauthorized access to the menu can be prevented by disabling the Allow menu access setting in HW4 2008 Rotronic AG E M HP22 V1_10 Display The LC display of the HP22 has a backlight which can be set to be on all the time or whenever a key is pressed The backlight can also be disabled The upper line corresponds to relative humidity or dew frost point and the bottom line corresponds to temperature The display can be configured to show a trend indicator on each line A increasing value Vv decreasing value In the event of an alarm the display shows the symbol to the right of the value Keypad ON OFF Turns the instrument on or off MENU Press this key to activate the internal menu Press this key again to exit the menu UP DOWN When the menu is active use these keys to navigate the menu make a selection or change a value ENTER When the menu is active press this key to confirm a selection Menu Items Selections Information Notes Device Settings Metric English ss Back Light Key Press On Off Displa
8. t About 198 g 7 0 oz 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 CE EMC immunity Solder type Lead free RoHS directive FDA GAMP directives compatible 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 2008 Rotronic AG E M HP22 V1_10
9. y 6 to 12 months Applications where the probes are exposed to significant pollution may require more frequent verifications a Procedure for adjusting the probe from the HP22 keypad Temperature adjustment The keypad of the HP22 allows only a 1 point adjustment of temperature The effect of a 1 point temperature adjustment is to add the same offset to all measured values e When temperature is stable press the MENU key to show the internal menu on the display e Use the key to select Temperature Adjust and press the ENTER key e Make sure that the text line beginning with RefValue is highlighted and press the ENTER key e Use the or key to change the reference value to match the temperature reference e Use the key to highlight the Adjust text line and press the ENTER key e The HP22 confirms the adjustment with the message Adjust OK e Press the MENU key twice to exit the menu and return the HP22 to normal operation Notes o Any temperature adjustment should be done prior to adjusting humidity o The calibration point is automatically deleted from the probe memory after an adjustment 2008 Rotronic AG E M HP22 V1_10 o Because the HP22 has no real time clock the date of the adjustment is not written to the probe If retaining the adjustment date is important use the HW4 software to adjust the probe Humidity adjustment The keypad of the HP22 allows a multi point adjustment of humidity The effect of a humidity a
10. y backlight mode FS contrast LC display contrast adjustment Trend On Off Trend indication on the display Device Information Version Firmware version Serial Nor Seria number J e Device name User defined Probe Information Firmware version Serial Nbr Serial number ee Name Device name User defined m Humidity sensor status Off Good SQ Tuned Bad Data recording by the probe Sm Oi max 2000 values HumidityAdust SCS Humidity reference value 0 1 RH steps Acquired aatia of cal points in probe lt Acquire gt Save cal point to probe memory Erases all calibration points lt Adjust gt Effect depends on number of calibration points Temperature Adjust ff Lo RefValue Oef Temperature reference value 0 1 C steps o lt Adjust gt 1 point adjustment only offset o Record both the recording mode start stop and the log interval cannot be changed from the menu and are as configured with the ROTRONIC HW4 software 2008 Rotronic AG E M HP22 V1_10 Changing the parameters shown on the display When the menu is not active press the ENTER key to change which parameters are shown on the display O Relative humidity and temperature O Relative humidity temperature and calculated parameter when calculated parameter is enabled Changing the unit system The unit system of the HP22 metric or English can be changed from the keypad Menu gt Settings gt Unit Press the MENU k
Download Pdf Manuals
Related Search