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OPERATING INSTRUCTIONS 

-USER GUIDE- 

This guide provides step-by-step instructions on powering up, using and powering down 
the meter. 

 
NAVIGATION: 

The meter uses an on-screen, menu-driven approach to navigate through the meter 
features, allowing for an intuitive understanding of keypad functions. Each screen 
presents the user with a number of selectable options. One of the options is always 
selected and the user can move (navigate) the selection to any other available option. 
The keypad is aimed at providing navigational control, and not at accessing specific 
features. There are four directional keys aligned intuitively around a middle (fifth) key 
(see Figure 1): Above (UP), below (DOWN), to the right (RIGHT) and to the left (LEFT). 
The middle key is used to SELECT the option highlighted on the screen.  For purposes 
of this owner’s manual, the five keys will be referred to as 



and SELECT.  

 

 

Fig. 1 Keypad Layout 

 
 
 
 

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Summary of Contents for HT-4000

Page 1: ...HT 4000 HT 4000F THERMO HYGROMETER Owner s Manual Versions 1 0 1 1 Delmhorst Instrument Co Rev 4 July 2017 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com ...

Page 2: ... the range of 0 100 with accuracy of 2 over 10 90 o Measures temperature over the range of 40 F 255 F with accuracy of 1 8 F over 4 F to 158F range of 40 C 124 C with accuracy of 1 C over 20 to 70 C o Calculates Dew Point over the range of 40 F 176 F 40 C 80 C o Calculates GPP Grains Per Pound when in Fahrenheit mode over the range of 0 1 3820 GPP o Calculates GPK Grains Per Kilogram when in Celsi...

Page 3: ... selected and the user can move navigate the selection to any other available option The keypad is aimed at providing navigational control and not at accessing specific features There are four directional keys aligned intuitively around a middle fifth key see Figure 1 Above UP below DOWN to the right RIGHT and to the left LEFT The middle key is used to SELECT the option highlighted on the screen F...

Page 4: ...ttery condition is detected all measurement functions are disabled Enough power remains for other menu functions but almost any user action at this time causes a low battery warning to be generated The battery should be replaced immediately If the battery reaches critical levels the meter will refuse to stay on at power up This gradual warning system is intended to provide the user advanced batter...

Page 5: ...ress the SELECT key to choose that variable TO POWER THE METER DOWN 1 To power the meter down highlight OFF using the and keys and press SELECT 2 Alternatively if no keys are pressed for 2 minutes the meter will power down automatically FAHRENHEIT CELSIUS MODE TOGGLE 1 To switch between Fahrenheit and Celsius measuring modes use the keys to highlight F C 2 Pressing SELECT will toggle between Fahre...

Page 6: ...ecially designed for rotary drills and with 3 or 4 cutting edges to insure a smooth round hole 2 Vacuum the hole thoroughly then use a wire brush to clean and loosen any concrete remaining in the hole Vacuum again and repeat the process a second time 3 Insert the yellow sleeve into the hole Use silicone or other water resistant sealant to seal the interface between the collar of the sleeve and the...

Page 7: ...ctive carrying case provided is an ideal storage place when the meter is not in use If the meter has been left in a hot or cold environment overnight or for an extended period allow the meter to acclimate to the temperature conditions in which it will be used for minimum 1 2 hours or as long as possible Clean the meter with any biodegradable cleaner Use the cleaner sparingly and on external parts ...

Page 8: ...L INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY TYPE WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS OR DOWNTIME ARISING OUT OF OR RELATED IN ANY RESPECT TO ITS METERS OR ELECTRODES AND NO OTHER WARRANTY WRITTEN ORAL OR IMPLIED APPLIES DELMHORST SHALL IN NO EVENT BE LIABLE FOR ANY BREACH OF WARRANTY OR DEFECT IN THIS PRODUCT THAT EXCEEDS THE AMOUNT OF PURCHASE OF THIS PRODUCT The express w...

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