TSI Instruments HM685 Quick Start Manual

HM685 QUICK START GUIDE

Key Pad

Each key and its function are described below.
▲▼ The ▲and ▼keys are used to navigate through menus or to select an item to change.
◄► The ◄ and ► keys are used to change the selected item.
The ESC key returns to the previous screen or cancels an operation without saving changes.
ESC
Pressing the ENTER key accesses the Main Menu, select a menu item or accept changes.
Pressing the READ key initiates taking a time-averaged reading based on Log Mode and Log
READ
Settings. After taking the reading, the values are stored to memory (current Test ID) and displayed
on screen for a period of four (4) seconds or until the READ key has been pressed again. The
READ key also updates the calculations with current readings in the CALCULATIONS Menu.
Press the BACKLIGHT key to turn the display's backlighting on or off.
Press the DATA key from a measurement screen to access the Data Logging Menu.
DATA
Accesses the Pressure measurement screen from the Flow measurement screen.
PRESS
Press the
Accesses the Calculations menu from the Flow or Pressure measurement screen.
CALC
Accesses the Flow measurement screen form the Pressure measurement screen.
FLOW

Instrument Power

The HM685 Hydronic Manometer can be powered by four (4) AA-size batteries (alkaline or rechargeable NiMH)
or the AC adapter.
Battery Installation
Locate the battery cover on the back of the unit and loosen the screw to remove. Take out the battery holder and
replace with fresh batteries (alkaline or rechargeable NiMH). Ensure that the batteries are correctly oriented within
the battery holder and Set the battery-type selection switch to indicate the type of batteries to be used (alkaline or
rechargeable NiMH). Reinstall the battery holder and battery cover.
Using the AC Adapter
The AC adapter allows the HM685 Hydronic Manometer to be powered from a standard AC wall outlet. When
using the AC adapter, alkaline batteries (if installed) will be bypassed. The AC adapter also charges the NiMH
type batteries (if installed) in the unit.

Zeroing the Gauge Pressure Sensor

Upon instrument start-up, the user will be prompted to zero the gauge pressure sensor and includes on-screen
instructions. Gauge pressure sensor zeroing can also be initiated by selecting Zero Gauge Pressure when in the
Main Menu by pressing the ENTER (
the valve handle on the manometer set to the MEASURE position.
TSI Alnor HM685 Hydronic Manometer
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key to turn the HM685 Hydronic Manometer on or off.
) key. The (+) and (-) pressure ports must be open to atmosphere and
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