HS-04 Operator’s Manual Chapter 5: User Mode and Calibration • 39
Entering User Mode
WARNING: The HS-04 is not in operation as a gas detector while in User Mode.
1. Take the HS-04 to a non-hazardous location and turn it off if it is on.
2. Press and hold AIR, then press and hold POWER MODE. When you hear a beep, release the
buttons.
3. The screen that appears depends on the setting of User Mode’s PASS-W item.
If PASS-W is set to OFF (factory setting), continue with Step 6.
If PASS-W is set to ON, continue with Step 4.
DISP.SET (page 66) OFF: USER ID, STN ID, and BUZZ.VOL items do not appear in Display Mode.
ON
(factory setting): BUZZ.VOL item appears in Display Mode. USER ID and
STN ID items appear if ID DISP in Maintenance Mode is also set to ON.
ZERO.SUP (page 66)** ON
(factory setting): Not intended for field adjustment. The suppression value is
0.3 ppm.
ZERO.FLW (page 66)*** ON
(factory setting): Not intended for field adjustment.
E-CAL (page 67) XX seconds
: E-CAL appears in GAS CAL instead of A-CAL.
OFF
(factory setting): E-CAL does not appear in GAS CAL.
DATE (page 67) Set the instrument’s date and time.
PASS-W (page 68) ON
: User Mode is password-protected. Factory-set password is 0405.
OFF
(factory setting): User Mode is not password-protected.
ROM/SUM (page 69) View the firmware information for the HS-04’s sensor board and main board.
START (page 69) Press and release POWER MODE to begin the warmup sequence and enter Mea-
suring Mode.
*If a CYL SEL screen appears in A-CAL/E-CAL, CYL.DISP is set to ON in Maintenance Mode.
** Only appears if ZSUP.DSP is set to ON in Maintenance Mode.
*** Only appears if ZFLW.DSP is set to ON in Maintenance Mode.
Table 8: User Mode Menu Items
User Mode
Menu Item
Description
PASS-W set to OFF PASS-W set to ON
0000
PASS-W
BUMP
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