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Table of Contents
Troubleshooting
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Summary of Contents for Alnor HM680
- Page 1 OWNER’S MANUAL HM680 Hydronic Manometer...
- Page 2 LIMITATION OF WARRANTY AND LIABILITY Copyright© TSI Incorporated / February 2005 / All rights reserved. Address TSI Incorporated / Alnor Products / 500 Cardigan Road / Shoreview, MN 55126 / USA Telephone No. Fax No. (651)490-2707 (651)490-3824 LIMITATION OF WARRANTY AND LIABILITY (effective July 2000)
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Page 3: Table Of Contents
CONTENTS About This Manual........................iii Formatting and Typography ....................iii Technical Assistance—Help! ....................iii Chapter 1. Safety......................... 1 Safety Warnings........................1 Chapter 2. Introduction ......................3 Instrument Description ......................3 Unpacking ..........................4 Chapter 3. Getting Started ......................5 Keypad ............................ 5 Powering the Instrument ...................... - Page 4 Setup Instrument........................14 Decimal ........................... 14 Contrast........................... 14 Beeper..........................14 Time Constant......................... 14 Auto Off ........................... 15 Chapter 5. Data Logging Menu ....................17 View Test ID Statistics ......................17 View Log Data........................17 Choose Test ID ........................17 Edit Test ID Name......................... 18 Setup Logging ........................
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Page 5: About This Manual
Arial. In addition to the different typeface, displayed messages appear in quotes. Technical Assistance—Help! For technical assistance or questions about the instrument or this manual, or if the HM680 Hydronic Manometer needs repair or recalibration, call Technical Support at (651) 490-2707 or (800) 861-7897. -
Page 7: Chapter 1. Safety
Carefully read each of the following safety warnings prior to using the HM680 Hydronic Manometer. Never use the HM680 Hydronic Manometer or accessories on potable water systems or other systems which may be used to convey fluids for human or animal consumption. -
Page 9: Chapter 2. Introduction
Chapter 2. Introduction The HM680 Hydronic Manometer is an easy-to-use instrument designed for the accurate measurement of pressure and calculation of flow in non-potable water and air systems. Features of the manometer include the following: Single-function keys for ease of use... -
Page 10: Unpacking
HMFIT Please complete the registration card included with this product and mail it promptly. Registration of the product allows us notify you of product updates. If you prefer, you may register your HM680 through our website at www.alnor.com. HM680 Hydronic Manometer... -
Page 11: Chapter 3. Getting Started
Pressing the PRESS key from the Flow Measurement screen provides access to the Pressure Measurement screen. ON/OFF Press the ON/OFF key to turn the HM680 Hydronic Manometer on or off. CALC Pressing the CALC key from either the Pressure or Flow Measurement screens provides access to the... -
Page 12: Powering The Instrument
(alkaline or rechargeable NiMH) or the AC adapter. Using the AC Adapter The AC adapter allows the HM680 Hydronic Manometer to be powered from a standard AC wall outlet. When using the AC adapter, the batteries (if installed) will be bypassed. The AC adapter also charges the NiMH type batteries (if installed) in the unit. -
Page 13: Instrument Start-Up
For maximum battery life, ensure backlight is “off” when not needed. Instrument Start-up Upon turning the HM680 Hydronic Manometer on, the meter will engage in a brief self-check while displaying the serial number, model number, and revision of the instrument being used. In completing the self-check, the user is given the option to zero the gauge pressure sensor prior to proceeding to the Pressure Measurement Screen. -
Page 14: Zeroing The Differential Pressure Sensor
Zeroing the Differential Pressure Sensor To ensure the most accurate differential pressure (dP) measurements and calculated flow (Flow) values, the HM680 differential pressure sensor should be zeroed prior to taking readings on each new system. The differential pressure sensor is zeroed as follows: 1. -
Page 15: Attaching The Hoses To The Test Points
(Flow) will be negative. Making Pressure Measurements The HM680 Hydronic Manometer allows for simultaneous measurement and display of the High-side gauge and Differential pressure. The calculated Low-side gauge pressure is also displayed. While in the Pressure Measurement screen, the manometer makes and displays continuous pressure measurements, and allows for discrete data storage to the memory. -
Page 16: Continuous Measurements
The display is updated once per second. Making Flow Measurements The HM680 Hydronic Manometer allows for continuous calculation and display of flow. While in the Flow Measurement screen, the manometer makes and displays continuous pressure measurements, calculates and displays continuous flow readings, and allows for discrete data storage to the memory. -
Page 17: Making Temperature Measurements
Chapter 4). Making Temperature Measurements The HM680 Hydronic Manometer accessory temperature probe is a 1/8” diameter, stainless steel sheathed immersion probe designed for measurement of water line temperatures. When using the accessory temperature probe, the HM680 Hydronic Manometer is equipped to make and display continuous temperature measurements in both the Pressure and Flow Measurement screens. -
Page 18: Disconnecting The Manometer From The Test Points
Note: Discrete measurements stored from the Pressure Measurement screen will not contain flow data. Disconnecting the Manometer from the Test Points Caution should be exercised when disconnecting the HM680 Hydronic Manometer from a pressurized system, as water or air discharged under pressure poses the potential risk of serious personal injury. The following provides a guideline for disconnecting the manometer from the test points once measurements have been completed. -
Page 19: Chapter 4. Main Menu
Chapter 4. Main Menu The Main Menu is accessed by pressing the ENTER key from either the Pressure or Flow Measurement screens. Figure 5: Main Menu Zero Gauge Pressure This Main Menu option allows for zeroing the manometer’s gauge pressure sensor. Select Cv/Kv Factor This Main Menu option allows for selecting any of the 100 user-programmed valve flow coefficients (Cv or Kv) stored within the instrument. -
Page 20: Edit Current Cv/Kv Factor
This setting adjusts whether or not keypad presses are accompanied by an audible beep. The available beeper settings are ON and OFF. Time Constant This setting adjusts the current value of the time constant. The available settings for the time constant are: 1, 5, 10, 20, and 30 seconds. HM680 Hydronic Manometer... -
Page 21: Auto Off
Notes: The time constant is the sampling period over which the manometer averages measurements. Example: with the time constant equal to ten (10) seconds, the displayed reading represents the average of measurements taken over the previous ten (10) seconds. Increasing the time constant will serve to improve measurement stability, particularly when measuring systems with fluctuating pressures. -
Page 23: Chapter 5. Data Logging Menu
Chapter 5. Data Logging Menu The Data Logging Menu is accessed by pressing the DATA key from either the Pressure or Flow Measurement screens. Figure 6: Data Logging Menu View Test ID Statistics This Data Logging Menu option allows for viewing statistical data for all samples stored to the current Test ID. -
Page 24: Edit Test Id Name
This option allows for deleting all samples within the current Test ID, as well as restoring its factory set default name. Delete All Log Data This option allows for deleting all samples stored to the instrument, as well as restoring the factory set default names to each of the Test IDs. HM680 Hydronic Manometer... -
Page 25: Chapter 6. Calculations Menu
Chapter 6. Calculations Menu The HM680 Hydronic Manometer is capable of performing a variety of calculations useful in evaluating hydronic system performance. The Calculations Menu is accessed by pressing the CALC key from either the Pressure or Flow Measurement screens. -
Page 26: Heat Flow
Note: The upstream temperature can be entered as a real-time measurement if the accessory temperature probe is connected. With the value for the upstream temperature highlighted, press the READ key. The field will begin updating with measured values of temperature. Press the READ key again to discontinue real-time updates. HM680 Hydronic Manometer... -
Page 27: Cv/Kv
Temp2 The downstream fluid temperature of the device being measured. Note: The downstream temperature can be entered as a real-time measurement if the accessory temperature probe is connected. With the value for the downstream temperature highlighted, press the READ key. The field will begin updating with measured values of temperature. -
Page 28: Pump Law Impeller Diameter
Units for the inputs are driven by what was last set in the Pressure and Flow Measurement screens (with the exception of impeller diameter). Flow1 The actual system flow rate. Diam1 The actual pump impeller diameter. HM680 Hydronic Manometer... -
Page 29: Pump Law Delta P
Flow2 The desired system flow rate. Output The calculated required impeller diameter (Diam2) to achieve the desired flow will automatically update as the input parameters are changed. Using the ▲ and ▼ keys to scroll, and the ◄ and ► keys to change the selected field, the unit of measure for impeller diameter may be adjusted. -
Page 30: Pump Law Brake Power
Using the ▲ and ▼ keys to scroll, and the ◄ and ► keys to change the selected field, the unit of measure for pump brake power may be adjusted. Available units for pump brake power are: bhp, W and kW. HM680 Hydronic Manometer... -
Page 31: Chapter 7. Maintenance And Troubleshooting
4. Turn the valve handle on the manometer to the MEASURE position. 5. Hold the manometer with the pressure ports directed downward to allow liquid to drain from the unit. Note: The HM680 Hydronic Manometer should be stored with the valve handle in the MEASURE position. -
Page 32: Cleaning The Instrument Housing
The HM680 Hydronic Manometer is equipped with in-line filters upstream of the shut-off ball valve on both the High and Low pressure hoses. These filters should be flushed periodically with clean water to minimize potential clogging. 1. Disconnect the hose from the manometer. -
Page 33: Calibration
Calibration TSI recommends that the HM680 Hydronic Manometer receive an annual calibration. TSI will verify calibration of the instrument and re-issue a certificate of calibration with traceability to NIST. This “annual checkup”... - Page 34 EEPROM B CODE: USB CODE: Problem detected with the USB chip. Calibration CODE: The meter’s calibration data has been corrupted. The Lithium Battery is Low. Low voltage detected on the on-board lithium battery. HM680 Hydronic Manometer...
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Page 35: Chapter 8. Usb Downloading To A Computer
Chapter 8. USB Downloading to a Computer The HM680 Hydronic Manometer allows for downloading of stored data to a computer by using the included Windows-based CompuDat –USB downloading program and USB interface cable. Installing the USB Software Successful installation of the CompuDat–USB downloading software is completed as follows: 1. -
Page 36: Software Interface
Figure 17: Completing the Found New Hardware Wizard Software Interface With the HM680 meter connected to the computer, the CompuDat–USB program will launch automatically. All downloadable data stored to the instrument will be presented in a form similar to as... -
Page 37: All Testids
Figure 18: USB Folders and Files All TestIDs The All TestIDs file contains all data stored to each of the instrument’s 100 available Test IDs. Cv Factors The Cv Factors file contains all data associated with the instruments 100 available Cv/Kv valve coefficients. -
Page 39: Specifications
Specifications* Range Differential Pressure ..0 to 300 psi (0 to 2068 kPa) Gauge Pressure....0 to 300 psi (0 to 2068 kPa) 1............ Flow 0 to 9999 USGPM (0 to 631 l/s, 0 to 2271 m Operating Temperature ..40 to 100°F (4 to 38°C) electronics Storage Temperature .. - Page 40 TSI Incorporated 500 Cardigan Road Shoreview, MN 55126 USA Toll Free (800) 861-7897 Telephone (651) 490-2707 February 2005 Fax (651) 490-3824 Printed in USA www.alnor.com Part No. 1980518 Rev. A © Copyright 2005 TSI Incorporated customerservice@alnor.com...