Copyright HK Instruments Installation Version 1.0 2012
ZERO THE DEVICE STEP 6
a) Disconnect both pressure tubes from the pressure ports labeled
+ and –.
b) Push down the zero button (joystick) until the LED light (red)
turns on and the display reads “zeroing” (display option only). (see
Figure 6)
c) The zeroing of the device will proceed automatically. Zeroing is
complete when the LED turns off, and the display reads 0 (display
option only).
d) Reinstall the pressure tubes, ensuring the High pressure tube is
connected to the port labeled +, and the Low pressure tube is
connected to the port labeled −.
NOTE: The zero point should be calibrated via manual auto zero,
one hour after installation and at least every 12 months during
normal operations.
2) function
If the device includes the optional e-zero circuit, no action is
required.
(-AZ) is a True Auto Zero function in the form of an
automatic zeroing circuit built into the PCB board. The
function electronically adjusts the transducer zero at predeter-
mined time intervals (every 10 minutes). The function
eliminates all output signal drift due to thermal, electronic or
mechanical effects, as well as the need for technicians to remove
high and low pressure tubes when performing initial or periodic
transducer zero point calibration. The adjustment takes 4
seconds after which the device returns to its normal measuring
mode. During the 4 second adjustment period, the output and
display values will freeze to the latest measured value.
Transducers equiped with the function are virtually
maintenance free.
To zero the device two options are available:
1) Manuel Pushbutton Auto Zero
2) zero point calibration function
Does my transducer have an function?
See the product label. If it shows –AZ in the model number, then you
have the function.
1) Manual Pushbutton Auto Zero
NOTE: Supply voltage must be connected at least one hour prior to
zero point adjustment.
Figure 6 - Zeroing
Press Down Button
LED turns ON
Display reads “Zeroing”
LED
FIGURE 3WARRANTY POLICY
(a) WARRANTY COVERAGE: HK warrants to the original end user
of the Products that the Products will, at the date of initial
purchase, meet the applicable specication for such Products (as
described by HK in its product literature) and, under normal use
and service, will be free from any defects in materials or manufac-
ture for (a) one (1) year from date of sale to end user for electrome-
chanical Products and (b) ve (5) years from date of manufacture
for electronic Products.
(b) NO WARRANTY OF PRODUCT SUITABILITY: Neither HK nor
the manufacturer of the Products to be sold hereunder
(“Manufacturer”) makes any warranty that Products are suitable for
a particular purpose, application or design. Many states and
localities have differing codes or regulations governing the installa-
tion and/or use of HK products. HK does not guarantee compli-
ance with such codes or regulations; the end user is solely
responsible for safe and correct installation and use of the Prod-
ucts and for compliance with such codes and regulations.
(c) EXCLUSION OF IMPLIED WARRANTIES: THE WARRANTY
HEREIN IS THE ONLY WARRANTY APPLICABLE TO THE PROD-
UCTS AND EXCLUDES ALL OTHER WARRANTIES, INCLUDING
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, AND ANY IMPLIED WARRANTY ARIS-
ING FROM COURSE OF DEALING OR USAGE OF TRADE.
(d) REMEDIES FOR NON-CONFORMITY OR BREACH OF WAR-
RANTY: If the Product purchased does not conform to the appli-
cable warranty, HK will provide, at its option, one of the following
remedies: (1) repair of the non-conforming Product, (2) replace-
ment with a conforming Product, or (3) refund of the original
purchase price. THESE REMEDIES SHALL BE THE EXCLUSIVE
AND SOLE REMEDY for any breach of warranty. HK and Manufac-
turer have no other responsibility or liability for breach of warranty
or otherwise.
(e) LIMITATION OF LIABILITY: NEITHER HK NOR MANUFAC-
TURER WILL BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
INDIRECT, OR CONSEQUENTIAL DAMAGES UNDER ANY
CIRCUMSTANCE, INCLUDING WITHOUT LIMITATION ANY
DEFECT IN THE PRODUCT PURCHASED.
(f) FURTHER LIMITATIONS: The warranty herein does not cover
damage caused by lightning, ood or other natural phenomenon;
normal wear and tear; accident, improper or careless handling,
abnormal use, overloading, improper storage or abuse; incorrect
installation, care or reconstruction; or alteration, calibration,
reconguration, maintenance or installation work done by unquali-
ed personnel. Should Manufacturer alter the structure of any
Product in the future, HK and Manufacturer shall not be obligated
to make comparable changes to Products already purchased. HK
will give a new warranty for Products being replaced or repaired
within the warranty period, however only to the expiration of the
original Product’s warranty period. The warranty includes the repair
of a defective part or device, or if needed, a new part or device,
but no other costs except as otherwise stated in the HK Distributor
Terms and Conditions.
