Campbell HMP60 Instruction Manual
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Campbell HMP60 Instruction Manual

Temperature and relative humidity probe
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HMP60 Temperature and
Relative Humidity Probe
Revision: 6/15
C o p y r i g h t
©
1 9 9 5 - 2 0 1 5
C a m p b e l l
S c i e n t i f i c ,
I n c .

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Summary of Contents for Campbell HMP60

  • Page 1 HMP60 Temperature and Relative Humidity Probe Revision: 6/15 C o p y r i g h t © 1 9 9 5 - 2 0 1 5 C a m p b e l l S c i e n t i f i c ,...
  • Page 3 Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual. (Product manuals are available for review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by CSI, are warranted only to the limits extended by the original manufacturer.
  • Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an application engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. Campbell Scientific’s shipping address is: CAMPBELL SCIENTIFIC, INC.
  • Page 5 Periodically (at least yearly) check electrical ground connections. • WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.

  • Page 7: Table Of Contents

    Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction ..............1 2. Cautionary Statements ..........1 3. Initial Inspection ............1 4.
  • Page 8 HMP60 and 41303-5A Radiation Shield on a tripod mast (left) and on a CM202 Crossarm (right) ........... 9 7-4. HMP60 and RAD06 Radiation Shield on a tripod mast ...... 9 9-1. Exploded view of HMP60 (as shipped) ..........11 Tables 7-1.

  • Page 9: Introduction

    Humidity Probe Introduction The HMP60 probe measures temperature for the range of –40 to 60 °C, and relative humidity for the range of 0 to 100% RH. It is suitable for long-term, unattended monitoring, and is compatible with all Campbell Scientific dataloggers.

  • Page 10: Quickstart

    HMP60 Temperature and Relative Humidity Probe Quickstart Short Cut is an easy way to program your datalogger to measure the HMP60 sensor and assign datalogger wiring terminals. Use the following procedure to get started. 1. Install Short Cut by clicking on the install file icon. Get the install file from either www.campbellsci.com, the ResourceDVD, or find it in...
  • Page 11 5. Under the Available Sensors and Devices list, select the Sensors folder, then select the Meteorological | Relative Humidity & Temperature sub- folder. Select HMP50/HMP60 Temperature & Relative Humidity Sensor. Click to move the selection to the Selected device window.

  • Page 12: Overview

    6, check the output of the sensor in the datalogger support software data display to make sure it is making reasonable measurements. Overview The HMP60 Temperature and Relative Humidity probe contains a Platinum Resistance Temperature detector (PRT) and a Vaisala INTERCAP ®...

  • Page 13: Temperature Sensor

    HMP60 Temperature and Relative Humidity Probe Operating Temperature: –40 to 60 °C Probe Length: 7.1 cm (2.8 in) Probe Body Diameter: 1.2 cm (0.47 in) Filter: 0.2 µm Teflon membrane Filter Diameter: 1.2 cm (0.47 in) Housing Body Material: AISI 316 stainless steel...

  • Page 14: Wiring To Datalogger

    HMP60 Temperature and Relative Humidity Probe Wiring to Datalogger CAUTION Always connect the blue wire to the datalogger first, followed by the black, white, and clear wires. Connect the brown (power) wire last. TABLE 7-1. Wire Color, Function, and Datalogger Connection...

  • Page 15: Voltse() Instruction

    (p. 12) discuss temperature and relative humidity sensors. When used in the field, the HMP60 must be housed inside a solar radiation shield. Typically, the 41303-5A or RAD06 six-plate solar radiation shield is used. The HMP60 is held within the 41303-5A by a mounting clamp (FIGURE 7-2).

  • Page 16: Installation In A 41303-5A Or 41303-5B 6-Plate Shield

    3. Tighten the screws on the collar until it firmly grips the probe body (see FIGURE 7-2). FIGURE 7-2. HMP60 and 41303-5A Radiation Shield 7.3.2 Installation in a RAD06 6-Plate Shield or RAD10 10-Plate Shield 1. Pull off the yellow shipping cap (see FIGURE 7-1).

  • Page 17: Mount The Shield

    FIGURE 7-3. HMP60 and 41303-5A Radiation Shield on a tripod mast (left) and on a CM202 Crossarm (right) FIGURE 7-4. HMP60 and RAD06 Radiation Shield on a tripod mast...

  • Page 18: Operation

    Understanding the following details are not required for the general operation of the HMP60 with Campbell Scientific’s dataloggers. The signal reference and the power ground (black) are the same lead in the HMP60. When the HMP60 temperature and relative humidity are measured, both the signal reference and power ground are connected to ground at the datalogger.

  • Page 19: Maintenance

    Filter Shipping Cap (remove prior to installation) 9598 RH Chip FIGURE 9-1. Exploded view of HMP60 (as shipped) The offset and gain on the HMP60 electronics cannot be adjusted as part of a recalibration. Replace the RH chip as needed.

  • Page 20: Procedure For Removing Rh Chip

    HMP60 Temperature and Relative Humidity Probe 9.2.1 Procedure for Removing RH Chip 1. Unscrew the protective cap. 2. Hold the plastic sides of the RH chip and unplug it. CAUTION To prevent scratching, avoid touching the silver RH chip, and handle the RH chip with care.

  • Page 21: Importing Short Cut Code To Crbasic Editor

    Appendix A. Importing Short Cut Code to CRBasic Editor This tutorial shows: How to import a Short Cut program into a program editor for • additional refinement • How to import a wiring diagram from Short Cut into the comments of a custom program Short Cut creates files that can be imported into CRBasic Editor.
  • Page 22 Appendix A. Importing Short Cut Code to CRBasic Editor mark) begins each line. This character instructs the datalogger compiler to ignore the line when compiling the datalogger code.

  • Page 23: Example Program

    This example can be used directly with CR800 series and CR1000 dataloggers and can be modified for use with CR6, CR3000, and CR5000 dataloggers. 'Program measures the HMP60 probe once every 5 seconds and stores the average ‘temperature and a sample of the relative humidity every 60 minutes.

  • Page 25: Absolute Humidity

    Appendix C. Absolute Humidity The HMP60 measures the relative humidity. Relative humidity is defined by the equation below: × 100 (C-1) where RH is the relative humidity, e is the vapor pressure in kPa , and e is the saturation vapor pressure in kPa. The vapor pressure, e, is an absolute measure of the amount of water vapor in the air and is related to the dew point temperature.
  • Page 26 Signal & Power Reference 'Clear Shield Ground Symbol Public AirTC Public Public DataTable(Table1,True,-1) DataInterval(0,60,Min,0) Average(1,AirTC,FP2,0) Sample(1,RH,FP2) Average(1,VP, FP2,0) EndTable BeginProg Scan(5,Sec,1,0) 'HMP60 Temperature & Relative Humidity Sensor measurements AirTC and RH: VoltSE(AirTC,1,mV2500,1,0,0,_60Hz,0.1,-40.0) VoltSE(RH,1,mV2500,2,0,0,_60Hz,0.1,0) (RH>100) (RH<108) Then RH=100 VaporPressure(VP,AirTC,RH) CallTable(Table1) NextScan EndProg...
  • Page 28 • info@campbellsci.com.cn • info@campbellsci.de www.campbellsci.com www.campbellsci.de Campbell Scientific do Brasil Ltda. (CSB) Campbell Scientific Spain, S. L. (CSL Spain) Rua Apinagés, nbr. 2018 ─ Perdizes Avda. Pompeu Fabra 7-9, local 1 CEP: 01258-00 ─ São Paulo ─ SP 08024 Barcelona...

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