Extech Instruments RH600 User manual

USER MANUAL
RH600 Dew Point Meter

Table of contents
1 Introduction........................................................................1
2 Descriptions .......................................................................2
2.1 Meter (RH600) Description ........................................... 2
2.2 Probe (RH601) Description...........................................3
2.3 Button Descriptions..................................................... 3
2.3.1 Function Buttons..............................................3
2.3.2 Arrow Buttons .................................................3
2.4 Function Button Icon and Text Descriptions ......................3
3 Quick Steps ........................................................................ 5
4 Probe Use and Configuration................................................6
4.1 Connecting the Probe to the Meter .................................6
4.2 Connecting the Probe to a Process................................. 6
4.3 Setting the Probe Pressure ...........................................6
4.4 Setting the Probe Molar Mass........................................7
4.5 Purging Moisture from Probe (Purification) ....................... 7
5 Powering the Meter..............................................................8
6 Home Page.........................................................................9
6.1 Home Page Description ...............................................9
6.2 Home Page Summary Display ..................................... 10
6.3 Real-Time Readings Plotted on Graphs ......................... 10
6.4 Data Hold Mode ....................................................... 11
7 Programming Menu ........................................................... 12
7.1 Display Menu........................................................... 12
7.2 Functions Menu ....................................................... 13
7.3 Recording Menu....................................................... 14
7.4 Environment Menu.................................................... 14
7.5 Settings Menu.......................................................... 15
8 Data Recording ................................................................. 17
8.1 Data Recording Overview........................................... 17
8.2 Programming the Data Logger..................................... 17
8.3 Start/Stop Data Log Recording .................................... 18
8.4 Data Recording Using the Data Hold Function ................ 18
8.5 Viewing Recorded Data on the RH600 Display................ 18
8.6 Viewing Data Files on Graphs...................................... 21
8.7 Clearing Data Memory ............................................... 22
8.8 Downloading and Backing Up Data Files to a PC ............. 22
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Table of contents
9 Alarm Utility...................................................................... 24
9.1 Alarm Utility Overview................................................ 24
9.2 Alarm Operation ....................................................... 24
10 PC Interface...................................................................... 25
10.1 PC Connection Overview ........................................... 25
10.2 Initiating Meter-to-PC Communication ........................... 25
10.3 Updating the RH600 Firmware..................................... 25
11 Specifications................................................................... 28
11.1 General Specifications............................................... 28
11.2 Measurement Specifications ....................................... 29
11.3 List of Measurements and Calculated Readings .............. 30
12 Maintenance..................................................................... 31
12.1 Battery Replacement................................................. 31
12.2 Cleaning................................................................. 31
13 CUSTOMER SUPPORT ....................................................... 32
14 Warranty .......................................................................... 33
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Introduction
1
Thank you for selecting the Extech RH600 Dew Point Meter. The supplied
RH601 probe measures temperature and relative humidity over a wide range
with high accuracy. The RH600 then calculates other readings based on the
probe measurements. See the full list of readings in Section 11,
Specifications.
On the meter’s home page (Section 6), any two readings can be selected to
display, in addition to the fixed temperature display, for a total of three read-
ings on one page.
The RH600 can perform spot checks in ambient air and in industrial proc-
esses where the probe can be mounted directly into pressurized systems.
The probe adapts rapidly from ambient to process conditions and includes a
purge (purification) feature allowing it to dry quickly from process moisture
and condensation (see Section 4).
RH600 features include:
• Color LCD with adjustable brightness.
• Intuitive user interface with three context-sensitive function buttons.
• High quality industrial design for long-term stability and low maintenance.
• Wide measurement range: -58 to 86℉(-50 to 30℃).
• High and low alarms with audible and visual alerts.
• Sensor is designed especially for low humidity measurements.
• Selectable probe pressure/molar mass settings to match gas under test.
• Data Logger stores time-stamped readings to internal flash drive.
• Data Hold feature locks readings on the display.
• Data Hold readings can also be saved to the internal flash drive.
• PC interface for downloading stored Data Logger and Data Hold readings.
• Open downloaded data files in PC spreadsheet programs.
• Firmware can be upgraded by the user.
• Programmable auto power off utility.
• The package includes RH600 meter, RH601 probe, USB cable, 3.7 V lith-
ium rechargeable battery, AC power plugs, and user documentation.
NOTE
This document does not contain export-controlled information.
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Descriptions
2
2.1 Meter (RH600) Description
1. USB charging and PC interface port.
2. Color LCD.
3. Three function buttons, F1, F2, and F3 (see Section 2.2).
4. Four navigation and programming arrow buttons (see Section 2.2).
5. Unused port.
6. Probe connector.
7. Battery compartment.
8. Compartment locking screw.
9. Mounting hole.
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Descriptions
2
2.2 Probe (RH601) Description
1. Probe sensor tip with protective cap.
2. Threaded connector (0.5 inch).
3. Probe handle grip.
4. Probe cable.
2.3 Button Descriptions
2.3.1 Function Buttons
The context-sensitive function buttons (F1 , F2 , and F3 ) are located
directly below the display, from left to right. The function that is selected by
pressing one of these buttons is dependent on the icon (or text) directly above
it, in almost all cases. The only exception is the F2 power ON/OFF functions;
short press F2 to power the meter ON, long press F2 to power OFF. See Sec-
tion 2.4, below, for explanations of the icons and text that appear above the
function buttons.
2.3.2 Arrow Buttons
The four arrow buttons ( ) are used to navigate and change settings in
menus as explained throughout this user manual. When viewing graphs of da-
ta recorded using the Data Logger or the Data Hold function (not the real-time
graphs accessible from the Home page), you can use the left and right arrows
to move the cursor along the points of the graph curve, as explained in Sec-
tion 8, Data Recording. The up and down arrow buttons are also used when
performing a firmware update, as explained in Section 10.3.
2.4 Function Button Icon and Text Descriptions
Press F1 to return from (exit) a menu.
✔Press F3 to select, confirm, or change a menu option.
HOLD Press F2 to freeze the displayed readings. See Section 6.4, Data Hold,
and Section 8, Data Recording, for specifics.
Press F3 to open the programming menu. See Section 7 for Programming
menu information.
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Descriptions
2
From the Home page (Section 6), press F1 to begin viewing real-time
readings plotted on graphs. When the first graph opens, this icon will move
to the area above F3, press F3 at that point to step through all the available
graphs.
When you select View Data File from the Recording menu, and then open
a Data Log or a Data Hold file, press F3 to step through the four graphs
that represent the saved readings. See Section 8, Data Recording, for
specifics.
1S, 1min When viewing real-time readings plotted on a graph, as explained directly
above and in Section 6, press F2 to set the sampling rate (interval of time
between readings). The options are 1, 5 or 30 seconds and 1, 5, or 10
minutes.
Press F3 to save the readings that are held while the Data Hold function is
engaged. See Section 6.4, Data Hold, and Section 8, Data Recording, for
complete details.
Press F2 to view a Data Log file or a Data Hold file as a summary page.
See Section 8, Data Recording, for details.
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Quick Steps
3
1. Connect the probe to the port at the bottom of the meter (Section 4.1).
2. Remove the probe’s protective cap and mount it in the process under test
using the threaded connector (0.5 inch) or hold it in ambient air (Section
4.2).
3. Short press F2 (orange colored function button) to power the meter, the
Home page will appear (Section 6).
4. View the three displayed readings. Press the left or right arrow button to
view the readings in a concise text format. Press the left or right arrow to
return to the Home page.
5. Press F2 (HOLD), to freeze readings. Press F1 to release the held
readings. Press F3 , while readings are held, to save them.
6. Press F1 to view real-time readings plotted on a set of four graphs
(Section 6). When the first graph is shown, the graph icon moves above
F3. Press F3 to step through the graph pages. Press F2 to set the interval
of time between captured readings. Press F1 to return to the Home
page.
7. Press F3 to open the Programming menu (Section 7).
8. Long press F2, until the progress bar reaches 100%, to power off.
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Probe Use and Configuration
4
4.1 Connecting the Probe to the Meter
The probe connects to the port at the bottom of the meter. The four-pin con-
nection is keyed allowing only one insertion orientation; ensure proper orienta-
tion before applying pressure when inserting, do not force the connector.
Once the probe is connected to the meter, tighten the knurled screw to secure
the connection.
4.2 Connecting the Probe to a Process
Remove and safely store the probe’s protective cap. Insert the probe into the
access port of the process under test. The probe has 0.5 inch threads for
mounting. The probe can also be used in ambient air.
4.3 Setting the Probe Pressure
Set the probe’s Pressure setting to match the gas under test. See the steps
below.
• Press F3 to open the programming menu.
• Use the left or right arrow to scroll to Environment.
• Press F3 ✔to open the Environment menu.
• At the Pressure (P:) menu option, press F3.
• Use the arrow buttons to set the pressure (psi). Press F1 to confirm and
to return to the previous menu.
Figure 4.1 Use the arrow buttons to set the probe pressure to match the pressure of the gas
under test.
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